[syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

[syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    ae230642190a Merge branch 'af_unix-followup-fixes-for-so_p..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1771bf67280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c9bf1936936ca698
dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8c060db03f09/disk-ae230642.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1b9b937ece91/vmlinux-ae230642.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0c7eb1c82bf0/bzImage-ae230642.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com

======================================================
WARNING: possible circular locking dependency detected
6.4.0-rc7-syzkaller-01948-gae230642190a #0 Not tainted
------------------------------------------------------
syz-executor.2/11224 is trying to acquire lock:
ffff88803bee50d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
ffff88803bee50d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: j1939_sk_errqueue+0xa3/0x1a0 net/can/j1939/socket.c:1081

but task is already holding lock:
ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_cancel_active_session+0x41/0x360 net/can/j1939/transport.c:2183

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&priv->active_session_list_lock){+.-.}-{2:2}:
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
       j1939_session_activate+0x47/0x4b0 net/can/j1939/transport.c:1564
       j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:181 [inline]
       j1939_sk_queue_activate_next+0x2bf/0x4d0 net/can/j1939/socket.c:208
       j1939_session_deactivate_activate_next net/can/j1939/transport.c:1108 [inline]
       j1939_xtp_rx_abort_one+0x3c0/0x5b0 net/can/j1939/transport.c:1351
       j1939_xtp_rx_abort net/can/j1939/transport.c:1362 [inline]
       j1939_tp_cmd_recv net/can/j1939/transport.c:2111 [inline]
       j1939_tp_recv+0xd98/0xf50 net/can/j1939/transport.c:2144
       j1939_can_recv net/can/j1939/main.c:112 [inline]
       j1939_can_recv+0x78e/0xa80 net/can/j1939/main.c:38
       deliver net/can/af_can.c:572 [inline]
       can_rcv_filter+0x5d4/0x8d0 net/can/af_can.c:606
       can_receive+0x31d/0x5c0 net/can/af_can.c:663
       can_rcv+0x1e1/0x280 net/can/af_can.c:687
       __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5452
       __netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5566
       process_backlog+0x101/0x670 net/core/dev.c:5894
       __napi_poll+0xb7/0x6f0 net/core/dev.c:6460
       napi_poll net/core/dev.c:6527 [inline]
       net_rx_action+0x8a9/0xcb0 net/core/dev.c:6660
       __do_softirq+0x1d4/0x905 kernel/softirq.c:571
       run_ksoftirqd kernel/softirq.c:939 [inline]
       run_ksoftirqd+0x31/0x60 kernel/softirq.c:931
       smpboot_thread_fn+0x659/0x9e0 kernel/smpboot.c:164
       kthread+0x344/0x440 kernel/kthread.c:379
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

-> #1 (&jsk->sk_session_queue_lock){+.-.}-{2:2}:
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_sk_queue_drop_all+0x3b/0x2f0 net/can/j1939/socket.c:139
       j1939_sk_netdev_event_netdown+0x7f/0x160 net/can/j1939/socket.c:1280
       j1939_netdev_notify+0x19f/0x1d0 net/can/j1939/main.c:381
       notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93
       call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1962
       call_netdevice_notifiers_extack net/core/dev.c:2000 [inline]
       call_netdevice_notifiers net/core/dev.c:2014 [inline]
       __dev_notify_flags+0x1ea/0x2d0 net/core/dev.c:8571
       dev_change_flags+0x11b/0x170 net/core/dev.c:8607
       do_setlink+0x19e2/0x3ae0 net/core/rtnetlink.c:2867
       __rtnl_newlink+0xd85/0x1860 net/core/rtnetlink.c:3655
       rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3702
       rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6424
       netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549
       netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
       netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
       netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914
       sock_sendmsg_nosec net/socket.c:724 [inline]
       sock_sendmsg+0xde/0x190 net/socket.c:747
       ____sys_sendmsg+0x733/0x920 net/socket.c:2493
       ___sys_sendmsg+0x110/0x1b0 net/socket.c:2547
       __sys_sendmsg+0xf7/0x1c0 net/socket.c:2576
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #0 (&priv->j1939_socks_lock){+.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3113 [inline]
       check_prevs_add kernel/locking/lockdep.c:3232 [inline]
       validate_chain kernel/locking/lockdep.c:3847 [inline]
       __lock_acquire+0x2fcd/0x5f30 kernel/locking/lockdep.c:5088
       lock_acquire kernel/locking/lockdep.c:5705 [inline]
       lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_sk_errqueue+0xa3/0x1a0 net/can/j1939/socket.c:1081
       j1939_session_destroy+0x26c/0x4e0 net/can/j1939/transport.c:271
       __j1939_session_release net/can/j1939/transport.c:294 [inline]
       kref_put include/linux/kref.h:65 [inline]
       j1939_session_put net/can/j1939/transport.c:299 [inline]
       j1939_session_deactivate_locked net/can/j1939/transport.c:1086 [inline]
       j1939_session_deactivate_locked+0x293/0x340 net/can/j1939/transport.c:1074
       j1939_cancel_active_session+0x183/0x360 net/can/j1939/transport.c:2194
       j1939_netdev_notify+0x197/0x1d0 net/can/j1939/main.c:380
       notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93
       call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1962
       call_netdevice_notifiers_extack net/core/dev.c:2000 [inline]
       call_netdevice_notifiers net/core/dev.c:2014 [inline]
       __dev_notify_flags+0x1ea/0x2d0 net/core/dev.c:8571
       dev_change_flags+0x11b/0x170 net/core/dev.c:8607
       do_setlink+0x19e2/0x3ae0 net/core/rtnetlink.c:2867
       __rtnl_newlink+0xd85/0x1860 net/core/rtnetlink.c:3655
       rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3702
       rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6424
       netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549
       netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
       netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
       netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914
       sock_sendmsg_nosec net/socket.c:724 [inline]
       sock_sendmsg+0xde/0x190 net/socket.c:747
       ____sys_sendmsg+0x733/0x920 net/socket.c:2493
       ___sys_sendmsg+0x110/0x1b0 net/socket.c:2547
       __sys_sendmsg+0xf7/0x1c0 net/socket.c:2576
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

other info that might help us debug this:

Chain exists of:
  &priv->j1939_socks_lock --> &jsk->sk_session_queue_lock --> &priv->active_session_list_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&priv->active_session_list_lock);
                               lock(&jsk->sk_session_queue_lock);
                               lock(&priv->active_session_list_lock);
  lock(&priv->j1939_socks_lock);

 *** DEADLOCK ***

2 locks held by syz-executor.2/11224:
 #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
 #0: ffffffff8e1194a8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e8/0xd50 net/core/rtnetlink.c:6421
 #1: ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
 #1: ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
 #1: ffff88803bee5088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_cancel_active_session+0x41/0x360 net/can/j1939/transport.c:2183

stack backtrace:
CPU: 1 PID: 11224 Comm: syz-executor.2 Not tainted 6.4.0-rc7-syzkaller-01948-gae230642190a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2188
 check_prev_add kernel/locking/lockdep.c:3113 [inline]
 check_prevs_add kernel/locking/lockdep.c:3232 [inline]
 validate_chain kernel/locking/lockdep.c:3847 [inline]
 __lock_acquire+0x2fcd/0x5f30 kernel/locking/lockdep.c:5088
 lock_acquire kernel/locking/lockdep.c:5705 [inline]
 lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:355 [inline]
 j1939_sk_errqueue+0xa3/0x1a0 net/can/j1939/socket.c:1081
 j1939_session_destroy+0x26c/0x4e0 net/can/j1939/transport.c:271
 __j1939_session_release net/can/j1939/transport.c:294 [inline]
 kref_put include/linux/kref.h:65 [inline]
 j1939_session_put net/can/j1939/transport.c:299 [inline]
 j1939_session_deactivate_locked net/can/j1939/transport.c:1086 [inline]
 j1939_session_deactivate_locked+0x293/0x340 net/can/j1939/transport.c:1074
 j1939_cancel_active_session+0x183/0x360 net/can/j1939/transport.c:2194
 j1939_netdev_notify+0x197/0x1d0 net/can/j1939/main.c:380
 notifier_call_chain+0xb6/0x3c0 kernel/notifier.c:93
 call_netdevice_notifiers_info+0xb9/0x130 net/core/dev.c:1962
 call_netdevice_notifiers_extack net/core/dev.c:2000 [inline]
 call_netdevice_notifiers net/core/dev.c:2014 [inline]
 __dev_notify_flags+0x1ea/0x2d0 net/core/dev.c:8571
 dev_change_flags+0x11b/0x170 net/core/dev.c:8607
 do_setlink+0x19e2/0x3ae0 net/core/rtnetlink.c:2867
 __rtnl_newlink+0xd85/0x1860 net/core/rtnetlink.c:3655
 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3702
 rtnetlink_rcv_msg+0x43d/0xd50 net/core/rtnetlink.c:6424
 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2549
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x925/0xe30 net/netlink/af_netlink.c:1914
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg+0xde/0x190 net/socket.c:747
 ____sys_sendmsg+0x733/0x920 net/socket.c:2493
 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2547
 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2576
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdb2bc8c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdb2cab9168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fdb2bdabf80 RCX: 00007fdb2bc8c389
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000006
RBP: 00007fdb2bcd7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd70d89bbf R14: 00007fdb2cab9300 R15: 0000000000022000
 </TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to change bug's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

[PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Ziqi Zhao]

The following 3 locks would race against each other, causing the
deadlock situation in the Syzbot bug report:

- j1939_socks_lock
- active_session_list_lock
- sk_session_queue_lock

A reasonable fix is to change j1939_socks_lock to an rwlock, since in
the rare situations where a write lock is required for the linked list
that j1939_socks_lock is protecting, the code does not attempt to
acquire any more locks. This would break the circular lock dependency,
where, for example, the current thread already locks j1939_socks_lock
and attempts to acquire sk_session_queue_lock, and at the same time,
another thread attempts to acquire j1939_socks_lock while holding
sk_session_queue_lock.

NOTE: This patch along does not fix the unregister_netdevice bug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.

#syz test:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
---
 net/can/j1939/j1939-priv.h |  2 +-
 net/can/j1939/main.c       |  2 +-
 net/can/j1939/socket.c     | 25 +++++++++++++------------
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
index 16af1a7f80f6..74f15592d170 100644
--- a/net/can/j1939/j1939-priv.h
+++ b/net/can/j1939/j1939-priv.h
@@ -86,7 +86,7 @@ struct j1939_priv {
 	unsigned int tp_max_packet_size;
 
 	/* lock for j1939_socks list */
-	spinlock_t j1939_socks_lock;
+	rwlock_t j1939_socks_lock;
 	struct list_head j1939_socks;
 
 	struct kref rx_kref;
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
index ecff1c947d68..a6fb89fa6278 100644
--- a/net/can/j1939/main.c
+++ b/net/can/j1939/main.c
@@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
 		return ERR_PTR(-ENOMEM);
 
 	j1939_tp_init(priv);
-	spin_lock_init(&priv->j1939_socks_lock);
+	rwlock_init(&priv->j1939_socks_lock);
 	INIT_LIST_HEAD(&priv->j1939_socks);
 
 	mutex_lock(&j1939_netdev_lock);
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index feaec4ad6d16..a8b981dc2065 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
 	jsk->state |= J1939_SOCK_BOUND;
 	j1939_priv_get(priv);
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_add_tail(&jsk->list, &priv->j1939_socks);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
 {
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_del_init(&jsk->list);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 
 	j1939_priv_put(priv);
 	jsk->state &= ~J1939_SOCK_BOUND;
@@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
 	struct j1939_sock *jsk;
 	bool match = false;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		match = j1939_sk_recv_match_one(jsk, skcb);
 		if (match)
 			break;
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 
 	return match;
 }
@@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
 {
 	struct j1939_sock *jsk;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		j1939_sk_recv_one(jsk, skb);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_sk_sock_destruct(struct sock *sk)
@@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 
 		priv = j1939_netdev_start(ndev);
 		dev_put(ndev);
+
 		if (IS_ERR(priv)) {
 			ret = PTR_ERR(priv);
 			goto out_release_sock;
@@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
 	}
 
 	/* spread RX notifications to all sockets subscribed to this session */
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		if (j1939_sk_recv_match_one(jsk, &session->skcb))
 			__j1939_sk_errqueue(session, &jsk->sk, type);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 };
 
 void j1939_sk_send_loop_abort(struct sock *sk, int err)
@@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 	struct j1939_sock *jsk;
 	int error_code = ENETDOWN;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		jsk->sk.sk_err = error_code;
 		if (!sock_flag(&jsk->sk, SOCK_DEAD))
@@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 
 		j1939_sk_queue_drop_all(priv, jsk, error_code);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
-- 
2.34.1

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[syzbot]

> The following 3 locks would race against each other, causing the
> deadlock situation in the Syzbot bug report:
>
> - j1939_socks_lock
> - active_session_list_lock
> - sk_session_queue_lock
>
> A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> the rare situations where a write lock is required for the linked list
> that j1939_socks_lock is protecting, the code does not attempt to
> acquire any more locks. This would break the circular lock dependency,
> where, for example, the current thread already locks j1939_socks_lock
> and attempts to acquire sk_session_queue_lock, and at the same time,
> another thread attempts to acquire j1939_socks_lock while holding
> sk_session_queue_lock.
>
> NOTE: This patch along does not fix the unregister_netdevice bug
> reported by Syzbot; instead, it solves a deadlock situation to prepare
> for one or more further patches to actually fix the Syzbot bug, which
> appears to be a reference counting problem within the j1939 codebase.
>
> #syz test:

This crash does not have a reproducer. I cannot test it.

> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>
> Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
> ---
>  net/can/j1939/j1939-priv.h |  2 +-
>  net/can/j1939/main.c       |  2 +-
>  net/can/j1939/socket.c     | 25 +++++++++++++------------
>  3 files changed, 15 insertions(+), 14 deletions(-)
>
> diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
> index 16af1a7f80f6..74f15592d170 100644
> --- a/net/can/j1939/j1939-priv.h
> +++ b/net/can/j1939/j1939-priv.h
> @@ -86,7 +86,7 @@ struct j1939_priv {
>  	unsigned int tp_max_packet_size;
>  
>  	/* lock for j1939_socks list */
> -	spinlock_t j1939_socks_lock;
> +	rwlock_t j1939_socks_lock;
>  	struct list_head j1939_socks;
>  
>  	struct kref rx_kref;
> diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
> index ecff1c947d68..a6fb89fa6278 100644
> --- a/net/can/j1939/main.c
> +++ b/net/can/j1939/main.c
> @@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
>  		return ERR_PTR(-ENOMEM);
>  
>  	j1939_tp_init(priv);
> -	spin_lock_init(&priv->j1939_socks_lock);
> +	rwlock_init(&priv->j1939_socks_lock);
>  	INIT_LIST_HEAD(&priv->j1939_socks);
>  
>  	mutex_lock(&j1939_netdev_lock);
> diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
> index feaec4ad6d16..a8b981dc2065 100644
> --- a/net/can/j1939/socket.c
> +++ b/net/can/j1939/socket.c
> @@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
>  	jsk->state |= J1939_SOCK_BOUND;
>  	j1939_priv_get(priv);
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_add_tail(&jsk->list, &priv->j1939_socks);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
>  {
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_del_init(&jsk->list);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  
>  	j1939_priv_put(priv);
>  	jsk->state &= ~J1939_SOCK_BOUND;
> @@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
>  	struct j1939_sock *jsk;
>  	bool match = false;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		match = j1939_sk_recv_match_one(jsk, skcb);
>  		if (match)
>  			break;
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  
>  	return match;
>  }
> @@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
>  {
>  	struct j1939_sock *jsk;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		j1939_sk_recv_one(jsk, skb);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_sk_sock_destruct(struct sock *sk)
> @@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
>  
>  		priv = j1939_netdev_start(ndev);
>  		dev_put(ndev);
> +
>  		if (IS_ERR(priv)) {
>  			ret = PTR_ERR(priv);
>  			goto out_release_sock;
> @@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
>  	}
>  
>  	/* spread RX notifications to all sockets subscribed to this session */
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		if (j1939_sk_recv_match_one(jsk, &session->skcb))
>  			__j1939_sk_errqueue(session, &jsk->sk, type);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  };
>  
>  void j1939_sk_send_loop_abort(struct sock *sk, int err)
> @@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  	struct j1939_sock *jsk;
>  	int error_code = ENETDOWN;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		jsk->sk.sk_err = error_code;
>  		if (!sock_flag(&jsk->sk, SOCK_DEAD))
> @@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  
>  		j1939_sk_queue_drop_all(priv, jsk, error_code);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
> -- 
> 2.34.1
>

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Oleksij Rempel]

On Mon, Jul 03, 2023 at 11:47:26PM -0700, syzbot wrote:
> > The following 3 locks would race against each other, causing the
> > deadlock situation in the Syzbot bug report:
> >
> > - j1939_socks_lock
> > - active_session_list_lock
> > - sk_session_queue_lock
> >
> > A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> > the rare situations where a write lock is required for the linked list
> > that j1939_socks_lock is protecting, the code does not attempt to
> > acquire any more locks. This would break the circular lock dependency,
> > where, for example, the current thread already locks j1939_socks_lock
> > and attempts to acquire sk_session_queue_lock, and at the same time,
> > another thread attempts to acquire j1939_socks_lock while holding
> > sk_session_queue_lock.
> >
> > NOTE: This patch along does not fix the unregister_netdevice bug
> > reported by Syzbot; instead, it solves a deadlock situation to prepare
> > for one or more further patches to actually fix the Syzbot bug, which
> > appears to be a reference counting problem within the j1939 codebase.
> >
> > #syz test:
> 
> This crash does not have a reproducer. I cannot test it.
> 

To stress this code path, the socket should be configured with err queue
enabled. For example like this:

        value = 1;
        setsockopt(priv->sock, SOL_CAN_J1939, SO_J1939_ERRQUEUE, &value,
                         sizeof(value));

        sock_opt = SOF_TIMESTAMPING_SOFTWARE |
                   SOF_TIMESTAMPING_OPT_CMSG |
                   SOF_TIMESTAMPING_TX_ACK |
                   SOF_TIMESTAMPING_TX_SCHED |
                   SOF_TIMESTAMPING_OPT_STATS | SOF_TIMESTAMPING_OPT_TSONLY |
                   SOF_TIMESTAMPING_OPT_ID | SOF_TIMESTAMPING_RX_SOFTWARE;

        setsockopt(priv->sock, SOL_SOCKET, SO_TIMESTAMPING,
                       (char *) &sock_opt, sizeof(sock_opt));


I hope it will help to create the reproducer

Regards,
Oleksij
-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

[PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Ziqi Zhao]

The following 3 locks would race against each other, causing the
deadlock situation in the Syzbot bug report:

- j1939_socks_lock
- active_session_list_lock
- sk_session_queue_lock

A reasonable fix is to change j1939_socks_lock to an rwlock, since in
the rare situations where a write lock is required for the linked list
that j1939_socks_lock is protecting, the code does not attempt to
acquire any more locks. This would break the circular lock dependency,
where, for example, the current thread already locks j1939_socks_lock
and attempts to acquire sk_session_queue_lock, and at the same time,
another thread attempts to acquire j1939_socks_lock while holding
sk_session_queue_lock.

NOTE: This patch along does not fix the unregister_netdevice bug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.

Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com
Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
---
 net/can/j1939/j1939-priv.h |  2 +-
 net/can/j1939/main.c       |  2 +-
 net/can/j1939/socket.c     | 25 +++++++++++++------------
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
index 16af1a7f80f6..74f15592d170 100644
--- a/net/can/j1939/j1939-priv.h
+++ b/net/can/j1939/j1939-priv.h
@@ -86,7 +86,7 @@ struct j1939_priv {
 	unsigned int tp_max_packet_size;
 
 	/* lock for j1939_socks list */
-	spinlock_t j1939_socks_lock;
+	rwlock_t j1939_socks_lock;
 	struct list_head j1939_socks;
 
 	struct kref rx_kref;
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
index ecff1c947d68..a6fb89fa6278 100644
--- a/net/can/j1939/main.c
+++ b/net/can/j1939/main.c
@@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
 		return ERR_PTR(-ENOMEM);
 
 	j1939_tp_init(priv);
-	spin_lock_init(&priv->j1939_socks_lock);
+	rwlock_init(&priv->j1939_socks_lock);
 	INIT_LIST_HEAD(&priv->j1939_socks);
 
 	mutex_lock(&j1939_netdev_lock);
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index feaec4ad6d16..a8b981dc2065 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
 	jsk->state |= J1939_SOCK_BOUND;
 	j1939_priv_get(priv);
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_add_tail(&jsk->list, &priv->j1939_socks);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
 {
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_del_init(&jsk->list);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 
 	j1939_priv_put(priv);
 	jsk->state &= ~J1939_SOCK_BOUND;
@@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
 	struct j1939_sock *jsk;
 	bool match = false;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		match = j1939_sk_recv_match_one(jsk, skcb);
 		if (match)
 			break;
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 
 	return match;
 }
@@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
 {
 	struct j1939_sock *jsk;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		j1939_sk_recv_one(jsk, skb);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_sk_sock_destruct(struct sock *sk)
@@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 
 		priv = j1939_netdev_start(ndev);
 		dev_put(ndev);
+
 		if (IS_ERR(priv)) {
 			ret = PTR_ERR(priv);
 			goto out_release_sock;
@@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
 	}
 
 	/* spread RX notifications to all sockets subscribed to this session */
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		if (j1939_sk_recv_match_one(jsk, &session->skcb))
 			__j1939_sk_errqueue(session, &jsk->sk, type);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 };
 
 void j1939_sk_send_loop_abort(struct sock *sk, int err)
@@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 	struct j1939_sock *jsk;
 	int error_code = ENETDOWN;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		jsk->sk.sk_err = error_code;
 		if (!sock_flag(&jsk->sk, SOCK_DEAD))
@@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 
 		j1939_sk_queue_drop_all(priv, jsk, error_code);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
-- 
2.34.1

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Oleksij Rempel]

Hi,

Thank you for you patch. Right now I'm on vacation, I'll to take a look
on it as soon as possible. If i do not response for more then 3 weeks,
please ping me.

On Fri, Jul 21, 2023 at 09:22:26AM -0700, Ziqi Zhao wrote:
> The following 3 locks would race against each other, causing the
> deadlock situation in the Syzbot bug report:
> 
> - j1939_socks_lock
> - active_session_list_lock
> - sk_session_queue_lock
> 
> A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> the rare situations where a write lock is required for the linked list
> that j1939_socks_lock is protecting, the code does not attempt to
> acquire any more locks. This would break the circular lock dependency,
> where, for example, the current thread already locks j1939_socks_lock
> and attempts to acquire sk_session_queue_lock, and at the same time,
> another thread attempts to acquire j1939_socks_lock while holding
> sk_session_queue_lock.
> 
> NOTE: This patch along does not fix the unregister_netdevice bug
> reported by Syzbot; instead, it solves a deadlock situation to prepare
> for one or more further patches to actually fix the Syzbot bug, which
> appears to be a reference counting problem within the j1939 codebase.
> 
> Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com
> Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
> ---
>  net/can/j1939/j1939-priv.h |  2 +-
>  net/can/j1939/main.c       |  2 +-
>  net/can/j1939/socket.c     | 25 +++++++++++++------------
>  3 files changed, 15 insertions(+), 14 deletions(-)
> 
> diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
> index 16af1a7f80f6..74f15592d170 100644
> --- a/net/can/j1939/j1939-priv.h
> +++ b/net/can/j1939/j1939-priv.h
> @@ -86,7 +86,7 @@ struct j1939_priv {
>  	unsigned int tp_max_packet_size;
>  
>  	/* lock for j1939_socks list */
> -	spinlock_t j1939_socks_lock;
> +	rwlock_t j1939_socks_lock;
>  	struct list_head j1939_socks;
>  
>  	struct kref rx_kref;
> diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
> index ecff1c947d68..a6fb89fa6278 100644
> --- a/net/can/j1939/main.c
> +++ b/net/can/j1939/main.c
> @@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
>  		return ERR_PTR(-ENOMEM);
>  
>  	j1939_tp_init(priv);
> -	spin_lock_init(&priv->j1939_socks_lock);
> +	rwlock_init(&priv->j1939_socks_lock);
>  	INIT_LIST_HEAD(&priv->j1939_socks);
>  
>  	mutex_lock(&j1939_netdev_lock);
> diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
> index feaec4ad6d16..a8b981dc2065 100644
> --- a/net/can/j1939/socket.c
> +++ b/net/can/j1939/socket.c
> @@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
>  	jsk->state |= J1939_SOCK_BOUND;
>  	j1939_priv_get(priv);
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_add_tail(&jsk->list, &priv->j1939_socks);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
>  {
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_del_init(&jsk->list);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  
>  	j1939_priv_put(priv);
>  	jsk->state &= ~J1939_SOCK_BOUND;
> @@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
>  	struct j1939_sock *jsk;
>  	bool match = false;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		match = j1939_sk_recv_match_one(jsk, skcb);
>  		if (match)
>  			break;
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  
>  	return match;
>  }
> @@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
>  {
>  	struct j1939_sock *jsk;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		j1939_sk_recv_one(jsk, skb);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_sk_sock_destruct(struct sock *sk)
> @@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
>  
>  		priv = j1939_netdev_start(ndev);
>  		dev_put(ndev);
> +
>  		if (IS_ERR(priv)) {
>  			ret = PTR_ERR(priv);
>  			goto out_release_sock;
> @@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
>  	}
>  
>  	/* spread RX notifications to all sockets subscribed to this session */
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		if (j1939_sk_recv_match_one(jsk, &session->skcb))
>  			__j1939_sk_errqueue(session, &jsk->sk, type);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  };
>  
>  void j1939_sk_send_loop_abort(struct sock *sk, int err)
> @@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  	struct j1939_sock *jsk;
>  	int error_code = ENETDOWN;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		jsk->sk.sk_err = error_code;
>  		if (!sock_flag(&jsk->sk, SOCK_DEAD))
> @@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  
>  		j1939_sk_queue_drop_all(priv, jsk, error_code);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
> -- 
> 2.34.1
> 
> 
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Oleksij Rempel]

On Fri, Jul 21, 2023 at 09:22:26AM -0700, Ziqi Zhao wrote:
> The following 3 locks would race against each other, causing the
> deadlock situation in the Syzbot bug report:
> 
> - j1939_socks_lock
> - active_session_list_lock
> - sk_session_queue_lock
> 
> A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> the rare situations where a write lock is required for the linked list
> that j1939_socks_lock is protecting, the code does not attempt to
> acquire any more locks. This would break the circular lock dependency,
> where, for example, the current thread already locks j1939_socks_lock
> and attempts to acquire sk_session_queue_lock, and at the same time,
> another thread attempts to acquire j1939_socks_lock while holding
> sk_session_queue_lock.
> 
> NOTE: This patch along does not fix the unregister_netdevice bug
> reported by Syzbot; instead, it solves a deadlock situation to prepare
> for one or more further patches to actually fix the Syzbot bug, which
> appears to be a reference counting problem within the j1939 codebase.
> 
> Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com
> Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>

Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>

Thank you!

> ---
>  net/can/j1939/j1939-priv.h |  2 +-
>  net/can/j1939/main.c       |  2 +-
>  net/can/j1939/socket.c     | 25 +++++++++++++------------
>  3 files changed, 15 insertions(+), 14 deletions(-)
> 
> diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
> index 16af1a7f80f6..74f15592d170 100644
> --- a/net/can/j1939/j1939-priv.h
> +++ b/net/can/j1939/j1939-priv.h
> @@ -86,7 +86,7 @@ struct j1939_priv {
>  	unsigned int tp_max_packet_size;
>  
>  	/* lock for j1939_socks list */
> -	spinlock_t j1939_socks_lock;
> +	rwlock_t j1939_socks_lock;
>  	struct list_head j1939_socks;
>  
>  	struct kref rx_kref;
> diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
> index ecff1c947d68..a6fb89fa6278 100644
> --- a/net/can/j1939/main.c
> +++ b/net/can/j1939/main.c
> @@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
>  		return ERR_PTR(-ENOMEM);
>  
>  	j1939_tp_init(priv);
> -	spin_lock_init(&priv->j1939_socks_lock);
> +	rwlock_init(&priv->j1939_socks_lock);
>  	INIT_LIST_HEAD(&priv->j1939_socks);
>  
>  	mutex_lock(&j1939_netdev_lock);
> diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
> index feaec4ad6d16..a8b981dc2065 100644
> --- a/net/can/j1939/socket.c
> +++ b/net/can/j1939/socket.c
> @@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
>  	jsk->state |= J1939_SOCK_BOUND;
>  	j1939_priv_get(priv);
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_add_tail(&jsk->list, &priv->j1939_socks);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
>  {
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	write_lock_bh(&priv->j1939_socks_lock);
>  	list_del_init(&jsk->list);
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	write_unlock_bh(&priv->j1939_socks_lock);
>  
>  	j1939_priv_put(priv);
>  	jsk->state &= ~J1939_SOCK_BOUND;
> @@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
>  	struct j1939_sock *jsk;
>  	bool match = false;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		match = j1939_sk_recv_match_one(jsk, skcb);
>  		if (match)
>  			break;
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  
>  	return match;
>  }
> @@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
>  {
>  	struct j1939_sock *jsk;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		j1939_sk_recv_one(jsk, skb);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static void j1939_sk_sock_destruct(struct sock *sk)
> @@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
>  
>  		priv = j1939_netdev_start(ndev);
>  		dev_put(ndev);
> +
>  		if (IS_ERR(priv)) {
>  			ret = PTR_ERR(priv);
>  			goto out_release_sock;
> @@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
>  	}
>  
>  	/* spread RX notifications to all sockets subscribed to this session */
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		if (j1939_sk_recv_match_one(jsk, &session->skcb))
>  			__j1939_sk_errqueue(session, &jsk->sk, type);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  };
>  
>  void j1939_sk_send_loop_abort(struct sock *sk, int err)
> @@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  	struct j1939_sock *jsk;
>  	int error_code = ENETDOWN;
>  
> -	spin_lock_bh(&priv->j1939_socks_lock);
> +	read_lock_bh(&priv->j1939_socks_lock);
>  	list_for_each_entry(jsk, &priv->j1939_socks, list) {
>  		jsk->sk.sk_err = error_code;
>  		if (!sock_flag(&jsk->sk, SOCK_DEAD))
> @@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
>  
>  		j1939_sk_queue_drop_all(priv, jsk, error_code);
>  	}
> -	spin_unlock_bh(&priv->j1939_socks_lock);
> +	read_unlock_bh(&priv->j1939_socks_lock);
>  }
>  
>  static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
> -- 
> 2.34.1
> 
> 
> 

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Oleksij Rempel]

On Mon, Aug 07, 2023 at 06:46:34AM +0200, Oleksij Rempel wrote:
> On Fri, Jul 21, 2023 at 09:22:26AM -0700, Ziqi Zhao wrote:
> > The following 3 locks would race against each other, causing the
> > deadlock situation in the Syzbot bug report:
> > 
> > - j1939_socks_lock
> > - active_session_list_lock
> > - sk_session_queue_lock
> > 
> > A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> > the rare situations where a write lock is required for the linked list
> > that j1939_socks_lock is protecting, the code does not attempt to
> > acquire any more locks. This would break the circular lock dependency,
> > where, for example, the current thread already locks j1939_socks_lock
> > and attempts to acquire sk_session_queue_lock, and at the same time,
> > another thread attempts to acquire j1939_socks_lock while holding
> > sk_session_queue_lock.
> > 
> > NOTE: This patch along does not fix the unregister_netdevice bug
> > reported by Syzbot; instead, it solves a deadlock situation to prepare
> > for one or more further patches to actually fix the Syzbot bug, which
> > appears to be a reference counting problem within the j1939 codebase.
> > 
> > Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com
> > Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>

Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de>

-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit:    e40939bbfc68 Merge branch 'for-next/core' into for-kernelci
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=17ce67d8a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c84f463eb74eab24
dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564
compiler:       Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1580fc5ca80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=178f78d4a80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/257596b75aaf/disk-e40939bb.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9c75b8d61081/vmlinux-e40939bb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8f0233129f4f/Image-e40939bb.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com

======================================================
WARNING: possible circular locking dependency detected
6.4.0-rc7-syzkaller-ge40939bbfc68 #0 Not tainted
------------------------------------------------------
syz-executor375/6045 is trying to acquire lock:
ffff0000d2e690d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
ffff0000d2e690d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: j1939_sk_errqueue+0x90/0x144 net/can/j1939/socket.c:1081

but task is already holding lock:
ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_cancel_active_session+0x54/0x414 net/can/j1939/transport.c:2183

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&priv->active_session_list_lock){+.-.}-{2:2}:
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x48/0x60 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
       j1939_session_activate+0x60/0x378 net/can/j1939/transport.c:1564
       j1939_sk_queue_activate_next_locked net/can/j1939/socket.c:181 [inline]
       j1939_sk_queue_activate_next+0x230/0x3b4 net/can/j1939/socket.c:208
       j1939_session_deactivate_activate_next net/can/j1939/transport.c:1108 [inline]
       j1939_session_completed net/can/j1939/transport.c:1222 [inline]
       j1939_xtp_rx_eoma_one net/can/j1939/transport.c:1395 [inline]
       j1939_xtp_rx_eoma+0x2c0/0x4c0 net/can/j1939/transport.c:1410
       j1939_tp_cmd_recv net/can/j1939/transport.c:2099 [inline]
       j1939_tp_recv+0x714/0xe14 net/can/j1939/transport.c:2144
       j1939_can_recv+0x5bc/0x930 net/can/j1939/main.c:112
       deliver net/can/af_can.c:572 [inline]
       can_rcv_filter+0x308/0x714 net/can/af_can.c:606
       can_receive+0x338/0x498 net/can/af_can.c:663
       can_rcv+0x128/0x23c net/can/af_can.c:687
       __netif_receive_skb_one_core net/core/dev.c:5493 [inline]
       __netif_receive_skb+0x18c/0x400 net/core/dev.c:5607
       process_backlog+0x3c0/0x70c net/core/dev.c:5935
       __napi_poll+0xb4/0x648 net/core/dev.c:6498
       napi_poll net/core/dev.c:6565 [inline]
       net_rx_action+0x5e4/0xdc4 net/core/dev.c:6698
       __do_softirq+0x2d0/0xd54 kernel/softirq.c:571
       run_ksoftirqd+0x6c/0x158 kernel/softirq.c:939
       smpboot_thread_fn+0x4b0/0x920 kernel/smpboot.c:164
       kthread+0x288/0x310 kernel/kthread.c:379
       ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853

-> #1 (&jsk->sk_session_queue_lock){+.-.}-{2:2}:
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x48/0x60 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_sk_queue_drop_all+0x4c/0x200 net/can/j1939/socket.c:139
       j1939_sk_netdev_event_netdown+0xe0/0x144 net/can/j1939/socket.c:1280
       j1939_netdev_notify+0xf0/0x144 net/can/j1939/main.c:381
       notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93
       raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461
       __dev_notify_flags+0x2bc/0x544
       dev_change_flags+0xd0/0x15c net/core/dev.c:8645
       do_setlink+0xc68/0x35c8 net/core/rtnetlink.c:2867
       __rtnl_newlink net/core/rtnetlink.c:3648 [inline]
       rtnl_newlink+0x1354/0x1b1c net/core/rtnetlink.c:3695
       rtnetlink_rcv_msg+0x744/0xdb8 net/core/rtnetlink.c:6417
       netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2546
       rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6435
       netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
       netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
       netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1913
       sock_sendmsg_nosec net/socket.c:724 [inline]
       sock_sendmsg net/socket.c:747 [inline]
       ____sys_sendmsg+0x568/0x81c net/socket.c:2503
       ___sys_sendmsg net/socket.c:2557 [inline]
       __sys_sendmsg+0x26c/0x33c net/socket.c:2586
       __do_sys_sendmsg net/socket.c:2595 [inline]
       __se_sys_sendmsg net/socket.c:2593 [inline]
       __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2593
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
       el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

-> #0 (&priv->j1939_socks_lock){+.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3113 [inline]
       check_prevs_add kernel/locking/lockdep.c:3232 [inline]
       validate_chain kernel/locking/lockdep.c:3847 [inline]
       __lock_acquire+0x3308/0x7604 kernel/locking/lockdep.c:5088
       lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5705
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
       _raw_spin_lock_bh+0x48/0x60 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:355 [inline]
       j1939_sk_errqueue+0x90/0x144 net/can/j1939/socket.c:1081
       __j1939_session_release net/can/j1939/transport.c:294 [inline]
       kref_put include/linux/kref.h:65 [inline]
       j1939_session_put+0xf0/0x4b4 net/can/j1939/transport.c:299
       j1939_session_deactivate_locked net/can/j1939/transport.c:1086 [inline]
       j1939_cancel_active_session+0x2ec/0x414 net/can/j1939/transport.c:2194
       j1939_netdev_notify+0xe8/0x144 net/can/j1939/main.c:380
       notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93
       raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461
       __dev_notify_flags+0x2bc/0x544
       dev_change_flags+0xd0/0x15c net/core/dev.c:8645
       do_setlink+0xc68/0x35c8 net/core/rtnetlink.c:2867
       __rtnl_newlink net/core/rtnetlink.c:3648 [inline]
       rtnl_newlink+0x1354/0x1b1c net/core/rtnetlink.c:3695
       rtnetlink_rcv_msg+0x744/0xdb8 net/core/rtnetlink.c:6417
       netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2546
       rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6435
       netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
       netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
       netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1913
       sock_sendmsg_nosec net/socket.c:724 [inline]
       sock_sendmsg net/socket.c:747 [inline]
       ____sys_sendmsg+0x568/0x81c net/socket.c:2503
       ___sys_sendmsg net/socket.c:2557 [inline]
       __sys_sendmsg+0x26c/0x33c net/socket.c:2586
       __do_sys_sendmsg net/socket.c:2595 [inline]
       __se_sys_sendmsg net/socket.c:2593 [inline]
       __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2593
       __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
       invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
       el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
       do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
       el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
       el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
       el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

other info that might help us debug this:

Chain exists of:
  &priv->j1939_socks_lock --> &jsk->sk_session_queue_lock --> &priv->active_session_list_lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&priv->active_session_list_lock);
                               lock(&jsk->sk_session_queue_lock);
                               lock(&priv->active_session_list_lock);
  lock(&priv->j1939_socks_lock);

 *** DEADLOCK ***

2 locks held by syz-executor375/6045:
 #0: ffff80009080db68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline]
 #0: ffff80009080db68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x700/0xdb8 net/core/rtnetlink.c:6414
 #1: ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:355 [inline]
 #1: ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_session_list_lock net/can/j1939/transport.c:238 [inline]
 #1: ffff0000d2e69088 (&priv->active_session_list_lock){+.-.}-{2:2}, at: j1939_cancel_active_session+0x54/0x414 net/can/j1939/transport.c:2183

stack backtrace:
CPU: 1 PID: 6045 Comm: syz-executor375 Not tainted 6.4.0-rc7-syzkaller-ge40939bbfc68 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2066
 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2188
 check_prev_add kernel/locking/lockdep.c:3113 [inline]
 check_prevs_add kernel/locking/lockdep.c:3232 [inline]
 validate_chain kernel/locking/lockdep.c:3847 [inline]
 __lock_acquire+0x3308/0x7604 kernel/locking/lockdep.c:5088
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5705
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x48/0x60 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:355 [inline]
 j1939_sk_errqueue+0x90/0x144 net/can/j1939/socket.c:1081
 __j1939_session_release net/can/j1939/transport.c:294 [inline]
 kref_put include/linux/kref.h:65 [inline]
 j1939_session_put+0xf0/0x4b4 net/can/j1939/transport.c:299
 j1939_session_deactivate_locked net/can/j1939/transport.c:1086 [inline]
 j1939_cancel_active_session+0x2ec/0x414 net/can/j1939/transport.c:2194
 j1939_netdev_notify+0xe8/0x144 net/can/j1939/main.c:380
 notifier_call_chain+0x1a4/0x510 kernel/notifier.c:93
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:461
 __dev_notify_flags+0x2bc/0x544
 dev_change_flags+0xd0/0x15c net/core/dev.c:8645
 do_setlink+0xc68/0x35c8 net/core/rtnetlink.c:2867
 __rtnl_newlink net/core/rtnetlink.c:3648 [inline]
 rtnl_newlink+0x1354/0x1b1c net/core/rtnetlink.c:3695
 rtnetlink_rcv_msg+0x744/0xdb8 net/core/rtnetlink.c:6417
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2546
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6435
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1913
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 ____sys_sendmsg+0x568/0x81c net/socket.c:2503
 ___sys_sendmsg net/socket.c:2557 [inline]
 __sys_sendmsg+0x26c/0x33c net/socket.c:2586
 __do_sys_sendmsg net/socket.c:2595 [inline]
 __se_sys_sendmsg net/socket.c:2593 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2593
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191
 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

[PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Ziqi Zhao]

The following 3 locks would race against each other, causing the
deadlock situation in the Syzbot bug report:

- j1939_socks_lock
- active_session_list_lock
- sk_session_queue_lock

A reasonable fix is to change j1939_socks_lock to an rwlock, since in
the rare situations where a write lock is required for the linked list
that j1939_socks_lock is protecting, the code does not attempt to
acquire any more locks. This would break the circular lock dependency,
where, for example, the current thread already locks j1939_socks_lock
and attempts to acquire sk_session_queue_lock, and at the same time,
another thread attempts to acquire j1939_socks_lock while holding
sk_session_queue_lock.

NOTE: This patch along does not fix the unregister_netdevice bug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.

#syz test:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
---
 net/can/j1939/j1939-priv.h |  2 +-
 net/can/j1939/main.c       |  2 +-
 net/can/j1939/socket.c     | 25 +++++++++++++------------
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
index 16af1a7f80f6..74f15592d170 100644
--- a/net/can/j1939/j1939-priv.h
+++ b/net/can/j1939/j1939-priv.h
@@ -86,7 +86,7 @@ struct j1939_priv {
 	unsigned int tp_max_packet_size;
 
 	/* lock for j1939_socks list */
-	spinlock_t j1939_socks_lock;
+	rwlock_t j1939_socks_lock;
 	struct list_head j1939_socks;
 
 	struct kref rx_kref;
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
index ecff1c947d68..a6fb89fa6278 100644
--- a/net/can/j1939/main.c
+++ b/net/can/j1939/main.c
@@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
 		return ERR_PTR(-ENOMEM);
 
 	j1939_tp_init(priv);
-	spin_lock_init(&priv->j1939_socks_lock);
+	rwlock_init(&priv->j1939_socks_lock);
 	INIT_LIST_HEAD(&priv->j1939_socks);
 
 	mutex_lock(&j1939_netdev_lock);
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index feaec4ad6d16..a8b981dc2065 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
 	jsk->state |= J1939_SOCK_BOUND;
 	j1939_priv_get(priv);
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_add_tail(&jsk->list, &priv->j1939_socks);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
 {
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_del_init(&jsk->list);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 
 	j1939_priv_put(priv);
 	jsk->state &= ~J1939_SOCK_BOUND;
@@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
 	struct j1939_sock *jsk;
 	bool match = false;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		match = j1939_sk_recv_match_one(jsk, skcb);
 		if (match)
 			break;
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 
 	return match;
 }
@@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
 {
 	struct j1939_sock *jsk;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		j1939_sk_recv_one(jsk, skb);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_sk_sock_destruct(struct sock *sk)
@@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 
 		priv = j1939_netdev_start(ndev);
 		dev_put(ndev);
+
 		if (IS_ERR(priv)) {
 			ret = PTR_ERR(priv);
 			goto out_release_sock;
@@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
 	}
 
 	/* spread RX notifications to all sockets subscribed to this session */
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		if (j1939_sk_recv_match_one(jsk, &session->skcb))
 			__j1939_sk_errqueue(session, &jsk->sk, type);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 };
 
 void j1939_sk_send_loop_abort(struct sock *sk, int err)
@@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 	struct j1939_sock *jsk;
 	int error_code = ENETDOWN;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		jsk->sk.sk_err = error_code;
 		if (!sock_flag(&jsk->sk, SOCK_DEAD))
@@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 
 		j1939_sk_queue_drop_all(priv, jsk, error_code);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
-- 
2.34.1

Re: [syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com

Tested on:

commit:         3f01e9fe Merge tag 'linux-watchdog-6.5-rc2' of git://w..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=130a98a2a80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4c2acb092ca90577
dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
patch:          https://syzkaller.appspot.com/x/patch.diff?x=1380a782a80000

Note: testing is done by a robot and is best-effort only.

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Stephen Hemminger]

On Tue, 11 Jul 2023 17:47:50 -0700
Ziqi Zhao <astrajoan@yahoo.com> wrote:

> The following 3 locks would race against each other, causing the
> deadlock situation in the Syzbot bug report:
> 
> - j1939_socks_lock
> - active_session_list_lock
> - sk_session_queue_lock
> 
> A reasonable fix is to change j1939_socks_lock to an rwlock, since in
> the rare situations where a write lock is required for the linked list
> that j1939_socks_lock is protecting, the code does not attempt to
> acquire any more locks. This would break the circular lock dependency,
> where, for example, the current thread already locks j1939_socks_lock
> and attempts to acquire sk_session_queue_lock, and at the same time,
> another thread attempts to acquire j1939_socks_lock while holding
> sk_session_queue_lock.
> 
> NOTE: This patch along does not fix the unregister_netdevice bug
> reported by Syzbot; instead, it solves a deadlock situation to prepare
> for one or more further patches to actually fix the Syzbot bug, which
> appears to be a reference counting problem within the j1939 codebase.
> 
> #syz test:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> 
> Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
> ---

Reader-writer locks are not the best way to fix a lock hierarchy problem.
Instead either fix the lock ordering, or use RCU.

Other devices don't have this problem, so perhaps the unique locking
in this device is the problem.

Re: [syzbot] [can?] possible deadlock in j1939_sk_errqueue (2)

[syzbot]

syzbot has bisected this issue to:

commit 2030043e616cab40f510299f09b636285e0a3678
Author: Oleksij Rempel <o.rempel@pengutronix.de>
Date:   Fri May 21 11:57:20 2021 +0000

    can: j1939: fix Use-after-Free, hold skb ref while in use

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1438c947680000
start commit:   1b907d050735 Merge tag '6.7-rc-smb3-client-fixes-part2' of..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1638c947680000
console output: https://syzkaller.appspot.com/x/log.txt?x=1238c947680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=88e7ba51eecd9cd6
dashboard link: https://syzkaller.appspot.com/bug?extid=1591462f226d9cbf0564
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17fea8fb680000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1633dc70e80000

Reported-by: syzbot+1591462f226d9cbf0564@syzkaller.appspotmail.com
Fixes: 2030043e616c ("can: j1939: fix Use-after-Free, hold skb ref while in use")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Astra Joan]

Hi Stephen,

Thank you for your reply!

Changing the lock sequence may be difficult here since the function

- j1939_sk_errqueue

has may call sites. However, this function attempts to hold the

- j1939_socks_lock

whose hierchy is pretty high in the given code logic. On the other hand,
this function only reads from the

- j1939_socks_list

which the above lock protects against. Therefore, it seems appropriate to
lock the above list inside the function for read access only.

The RCU approach makes sense here, but I probably need to use RCU in
conjunction with other spinlocks and rwlocks in the codebase. Would that
be okay? If not, should I be looking into replacing all the locks with
RCU? I'm actually a mentee for the bug fixing mentorship this summer.
So please bear with me if some of these questions seem a bit naive :D
Thank you so much for your time!

Best regards,
Ziqi

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Astra Joan]

[-- Attachment #1: Type: text/plain, Size: 445 bytes --]

Hi Dmitry,

Yes, I initially wanted to test my patch against this bug, but only
later realized there should be a reproducer in order to use syz test.

Also, I believe my local testing should suffice to show the patch's
ability to mitigate the deadlock bug. In particular, the attached error
log could be avoided if my patch was applied to the upstream. Could 
anyone in the mailing list review the patch given this context?

Best regards,
Ziqi


[-- Attachment #2: decode_netdevice.txt --]
[-- Type: text/plain, Size: 165109 bytes --]

[    0.000000][    T0] Linux version 6.4.0-rc6-00195-g40f71e7cd3c6 (astrajoan@Astras-Ubuntu) (gcc (Ubuntu 11.3.0-1ubuntu1~22.04.1) 11.3.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #4 SMP PREEMPT_DYNAMIC Sun Jun 18 18:30:59 PDT 2023
[    0.000000][    T0] Command line: root=/dev/sda1 console=ttyS0 earlyprintk=serial
[    0.000000][    T0] KERNEL supported cpus:
[    0.000000][    T0]   Intel GenuineIntel
[    0.000000][    T0]   AMD AuthenticAMD
[    0.000000][    T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
[    0.000000][    T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000][    T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000][    T0] x86/fpu: Supporting XSAVE feature 0x200: 'Protection Keys User registers'
[    0.000000][    T0] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000][    T0] x86/fpu: xstate_offset[9]:  832, xstate_sizes[9]:    8
[    0.000000][    T0] x86/fpu: Enabled xstate features 0x207, context size is 840 bytes, using 'compacted' format.
[    0.000000][    T0] signal: max sigframe size: 3376
[    0.000000][    T0] BIOS-provided physical RAM map:
[    0.000000][    T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[    0.000000][    T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[    0.000000][    T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[    0.000000][    T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bffdcfff] usable
[    0.000000][    T0] BIOS-e820: [mem 0x00000000bffdd000-0x00000000bfffffff] reserved
[    0.000000][    T0] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[    0.000000][    T0] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[    0.000000][    T0] BIOS-e820: [mem 0x0000000100000000-0x000000043fffffff] usable
[    0.000000][    T0] printk: bootconsole [earlyser0] enabled
[    0.000000][    T0] ERROR: earlyprintk= earlyser already used
[    0.000000][    T0] ERROR: earlyprintk= earlyser already used
[    0.000000][    T0] ERROR: earlyprintk= earlyser already used
[    0.000000][    T0] **********************************************************
[    0.000000][    T0] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000][    T0] **                                                      **
[    0.000000][    T0] ** This system shows unhashed kernel memory addresses   **
[    0.000000][    T0] ** via the console, logs, and other interfaces. This    **
[    0.000000][    T0] ** might reduce the security of your system.            **
[    0.000000][    T0] **                                                      **
[    0.000000][    T0] ** If you see this message and you are not debugging    **
[    0.000000][    T0] ** the kernel, report this immediately to your system   **
[    0.000000][    T0] ** administrator!                                       **
[    0.000000][    T0] **                                                      **
[    0.000000][    T0] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000][    T0] **********************************************************
[    0.000000][    T0] Malformed early option 'vsyscall'
[    0.000000][    T0] NX (Execute Disable) protection: active
[    0.000000][    T0] SMBIOS 2.8 present.
[    0.000000][    T0] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
[    0.000000][    T0] Hypervisor detected: KVM
[    0.000000][    T0] kvm-clock: Using msrs 4b564d01 and 4b564d00
[    0.000001][    T0] kvm-clock: using sched offset of 695362314 cycles
[    0.000340][    T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[    0.001346][    T0] tsc: Detected 3399.998 MHz processor
[    0.004987][    T0] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.005001][    T0] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.005013][    T0] last_pfn = 0x440000 max_arch_pfn = 0x400000000
[    0.005402][    T0] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT
[    0.005859][    T0] last_pfn = 0xbffdd max_arch_pfn = 0x400000000
[    0.008224][    T0] found SMP MP-table at [mem 0x000f5b90-0x000f5b9f]
[    0.008611][    T0] Using GB pages for direct mapping
[    0.009506][    T0] ACPI: Early table checksum verification disabled
[    0.009878][    T0] ACPI: RSDP 0x00000000000F59B0 000014 (v00 BOCHS )
[    0.010263][    T0] ACPI: RSDT 0x00000000BFFE1E8C 000034 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.010784][    T0] ACPI: FACP 0x00000000BFFE1CC8 000074 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.011321][    T0] ACPI: DSDT 0x00000000BFFE0040 001C88 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.011850][    T0] ACPI: FACS 0x00000000BFFE0000 000040
[    0.012163][    T0] ACPI: APIC 0x00000000BFFE1D3C 0000F0 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.012698][    T0] ACPI: HPET 0x00000000BFFE1E2C 000038 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.013234][    T0] ACPI: WAET 0x00000000BFFE1E64 000028 (v01 BOCHS  BXPC     00000001 BXPC 00000001)
[    0.013760][    T0] ACPI: Reserving FACP table memory at [mem 0xbffe1cc8-0xbffe1d3b]
[    0.014204][    T0] ACPI: Reserving DSDT table memory at [mem 0xbffe0040-0xbffe1cc7]
[    0.014644][    T0] ACPI: Reserving FACS table memory at [mem 0xbffe0000-0xbffe003f]
[    0.015078][    T0] ACPI: Reserving APIC table memory at [mem 0xbffe1d3c-0xbffe1e2b]
[    0.015518][    T0] ACPI: Reserving HPET table memory at [mem 0xbffe1e2c-0xbffe1e63]
[    0.015959][    T0] ACPI: Reserving WAET table memory at [mem 0xbffe1e64-0xbffe1e8b]
[    0.016873][    T0] No NUMA configuration found
[    0.017138][    T0] Faking a node at [mem 0x0000000000000000-0x000000043fffffff]
[    0.017557][    T0] Faking node 0 at [mem 0x0000000000000000-0x000000023fffffff] (9216MB)
[    0.018026][    T0] Faking node 1 at [mem 0x0000000240000000-0x000000043fffffff] (8192MB)
[    0.018723][    T0] NUMA: Initialized distance table, cnt=2
[    0.018731][    T0] NODE_DATA(0) allocated [mem 0x23fffa000-0x23fffffff]
[    0.019232][    T0] NODE_DATA(1) allocated [mem 0x43fff7000-0x43fffcfff]
[    0.038441][    T0] Zone ranges:
[    0.038651][    T0]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.039049][    T0]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
[    0.039445][    T0]   Normal   [mem 0x0000000100000000-0x000000043fffffff]
[    0.039833][    T0]   Device   empty
[    0.040042][    T0] Movable zone start for each node
[    0.040326][    T0] Early memory node ranges
[    0.040568][    T0]   node   0: [mem 0x0000000000001000-0x000000000009efff]
[    0.040965][    T0]   node   0: [mem 0x0000000000100000-0x00000000bffdcfff]
[    0.041370][    T0]   node   0: [mem 0x0000000100000000-0x000000023fffffff]
[    0.041769][    T0]   node   1: [mem 0x0000000240000000-0x000000043fffffff]
[    0.042178][    T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000023fffffff]
[    0.042626][    T0] Initmem setup node 1 [mem 0x0000000240000000-0x000000043fffffff]
[    0.043065][    T0] On node 0, zone DMA: 1 pages in unavailable ranges
[    0.043174][    T0] On node 0, zone DMA: 97 pages in unavailable ranges
[    0.098558][    T0] On node 0, zone Normal: 35 pages in unavailable ranges
[    0.306063][    T0] kasan: KernelAddressSanitizer initialized
[    0.306904][    T0] ACPI: PM-Timer IO Port: 0x608
[    0.307190][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 8/0x8 ignored.
[    0.307687][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 9/0x9 ignored.
[    0.308173][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 10/0xa ignored.
[    0.308678][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 11/0xb ignored.
[    0.309183][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 12/0xc ignored.
[    0.309671][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 13/0xd ignored.
[    0.310180][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 14/0xe ignored.
[    0.310674][    T0] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 15/0xf ignored.
[    0.311171][    T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[    0.311575][    T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[    0.312020][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.312444][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[    0.312871][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.313299][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[    0.313731][    T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[    0.314186][    T0] ACPI: Using ACPI (MADT) for SMP configuration information
[    0.314610][    T0] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[    0.314968][    T0] TSC deadline timer available
[    0.315247][    T0] smpboot: 16 Processors exceeds NR_CPUS limit of 8
[    0.315619][    T0] smpboot: Allowing 8 CPUs, 0 hotplug CPUs
[    0.315972][    T0] kvm-guest: KVM setup pv remote TLB flush
[    0.316314][    T0] kvm-guest: setup PV sched yield
[    0.316639][    T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.317129][    T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[    0.317606][    T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
[    0.318102][    T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[    0.318582][    T0] PM: hibernation: Registered nosave memory: [mem 0xbffdd000-0xbfffffff]
[    0.319065][    T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfeffbfff]
[    0.319551][    T0] PM: hibernation: Registered nosave memory: [mem 0xfeffc000-0xfeffffff]
[    0.320036][    T0] PM: hibernation: Registered nosave memory: [mem 0xff000000-0xfffbffff]
[    0.320515][    T0] PM: hibernation: Registered nosave memory: [mem 0xfffc0000-0xffffffff]
[    0.320994][    T0] [mem 0xc0000000-0xfeffbfff] available for PCI devices
[    0.321391][    T0] Booting paravirtualized kernel on KVM
[    0.321719][    T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    0.349733][    T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:8 nr_node_ids:2
[    0.350557][    T0] percpu: Embedded 72 pages/cpu s254856 r8192 d31864 u524288
[    0.350980][    T0] pcpu-alloc: s254856 r8192 d31864 u524288 alloc=1*2097152
[    0.350990][    T0] pcpu-alloc: [0] 0 2 4 6 [1] 1 3 5 7
[    0.351076][    T0] kvm-guest: PV spinlocks enabled
[    0.351371][    T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
[    0.351848][    T0] Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=8 panic_on_warn=1 root=/dev/sda1 console=ttyS0 earlyprintk=serial
[    0.359011][    T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl", will be passed to user space.
[    0.359736][    T0] random: crng init done
[    0.360251][    T0] Fallback order for Node 0: 0 1
[    0.360258][    T0] Fallback order for Node 1: 1 0
[    0.360265][    T0] Built 2 zonelists, mobility grouping on.  Total pages: 4128477
[    0.361305][    T0] Policy zone: Normal
[    0.361685][    T0] mem auto-init: stack:off, heap alloc:on, heap free:off
[    0.362111][    T0] stackdepot: allocating hash table via alloc_large_system_hash
[    0.363130][    T0] stackdepot hash table entries: 1048576 (order: 11, 8388608 bytes, linear)
[    0.363644][    T0] software IO TLB: area num 8.
[    0.897158][    T0] Memory: 14021472K/16776684K available (151552K kernel code, 36659K rwdata, 31504K rodata, 3296K init, 34532K bss, 2754956K reserved, 0K cma-reserved)
[    0.898599][    T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=8, Nodes=2
[    0.969878][    T0] allocated 301989888 bytes of page_ext
[    0.970211][    T0] Node 0, zone      DMA: page owner found early allocated 0 pages
[    0.972566][    T0] Node 0, zone    DMA32: page owner found early allocated 0 pages
[    0.993428][    T0] Node 0, zone   Normal: page owner found early allocated 36961 pages
[    1.002600][    T0] Node 1, zone   Normal: page owner found early allocated 36867 pages
[    1.003453][    T0] Dynamic Preempt: full
[    1.003996][    T0] Running RCU self tests
[    1.004243][    T0] Running RCU synchronous self tests
[    1.004573][    T0] rcu: Preemptible hierarchical RCU implementation.
[    1.004960][    T0] rcu: 	RCU lockdep checking is enabled.
[    1.005287][    T0] rcu: 	RCU callback double-/use-after-free debug is enabled.
[    1.005720][    T0] rcu: 	RCU debug extended QS entry/exit.
[    1.006050][    T0] 	All grace periods are expedited (rcu_expedited).
[    1.006427][    T0] 	Trampoline variant of Tasks RCU enabled.
[    1.006758][    T0] 	Tracing variant of Tasks RCU enabled.
[    1.007086][    T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
[    1.007608][    T0] Running RCU synchronous self tests
[    1.030641][    T0] NR_IRQS: 4352, nr_irqs: 488, preallocated irqs: 16
[    1.031327][    T0] rcu: srcu_init: Setting srcu_struct sizes based on contention.
[    1.031925][    T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff888437a00000-0xffff888437c00000
[    1.035427][    T0] Console: colour VGA+ 80x25
[    1.035736][    T0] printk: console [ttyS0] enabled
[    1.036315][    T0] printk: bootconsole [earlyser0] disabled
[    1.037012][    T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    1.037510][    T0] ... MAX_LOCKDEP_SUBCLASSES:  8
[    1.037806][    T0] ... MAX_LOCK_DEPTH:          48
[    1.038108][    T0] ... MAX_LOCKDEP_KEYS:        8192
[    1.038410][    T0] ... CLASSHASH_SIZE:          4096
[    1.038720][    T0] ... MAX_LOCKDEP_ENTRIES:     131072
[    1.039035][    T0] ... MAX_LOCKDEP_CHAINS:      262144
[    1.039349][    T0] ... CHAINHASH_SIZE:          131072
[    1.039659][    T0]  memory used by lock dependency info: 20657 kB
[    1.040031][    T0]  memory used for stack traces: 8320 kB
[    1.040362][    T0]  per task-struct memory footprint: 1920 bytes
[    1.040786][    T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
[    1.041514][    T0] ACPI: Core revision 20230331
[    1.042035][    T0] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[    1.042745][    T0] APIC: Switch to symmetric I/O mode setup
[    1.043201][    T0] x2apic enabled
[    1.043514][    T0] Switched APIC routing to physical x2apic.
[    1.043852][    T0] kvm-guest: setup PV IPIs
[    1.044886][    T0] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    1.045364][    T0] tsc: Marking TSC unstable due to TSCs unsynchronized
[    1.045812][    T0] Calibrating delay loop (skipped) preset value.. 6799.99 BogoMIPS (lpj=33999980)
[    1.046435][    T0] pid_max: default: 32768 minimum: 301
[    1.046927][    T0] LSM: initializing lsm=lockdown,capability,landlock,yama,safesetid,tomoyo,apparmor,bpf,integrity
[    1.047673][    T0] landlock: Up and running.
[    1.047970][    T0] Yama: becoming mindful.
[    1.048293][    T0] TOMOYO Linux initialized
[    1.048676][    T0] AppArmor: AppArmor initialized
[    1.049005][    T0] LSM support for eBPF active
[    1.052077][    T0] Dentry cache hash table entries: 2097152 (order: 12, 16777216 bytes, vmalloc hugepage)
[    1.057206][    T0] Inode-cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage)
[    1.058031][    T0] Mount-cache hash table entries: 32768 (order: 6, 262144 bytes, vmalloc)
[    1.058771][    T0] Mountpoint-cache hash table entries: 32768 (order: 6, 262144 bytes, vmalloc)
[    1.060698][    T0] x86/cpu: User Mode Instruction Prevention (UMIP) activated
[    1.061349][    T0] numa_add_cpu cpu 0 node 0: mask now 0
[    1.061359][    T0] numa_add_cpu cpu 0 node 1: mask now 0
[    1.061367][    T0] Last level iTLB entries: 4KB 512, 2MB 255, 4MB 127
[    1.061809][    T0] Last level dTLB entries: 4KB 512, 2MB 255, 4MB 127, 1GB 0
[    1.062289][    T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[    1.062919][    T0] Spectre V2 : Kernel not compiled with retpoline; no mitigation available!
[    1.062922][    T0] Spectre V2 : Vulnerable
[    1.063776][    T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[    1.064368][    T0] Spectre V2 : Enabling Restricted Speculation for firmware calls
[    1.064889][    T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
[    1.065522][    T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
[    1.072294][    T0] Freeing SMP alternatives memory: 116K
[    1.072672][    T0] Running RCU synchronous self tests
[    1.073015][    T0] Running RCU synchronous self tests
[    1.073681][    T1] smpboot: CPU0: AMD Ryzen 9 5950X 16-Core Processor (family: 0x19, model: 0x21, stepping: 0x0)
[    1.075592][    T1] cblist_init_generic: Setting adjustable number of callback queues.
[    1.075807][    T1] cblist_init_generic: Setting shift to 3 and lim to 1.
[    1.075807][    T1] cblist_init_generic: Setting shift to 3 and lim to 1.
[    1.075807][    T1] Running RCU-tasks wait API self tests
[    1.205985][    T1] Performance Events: Fam17h+ core perfctr, AMD PMU driver.
[    1.207107][    T1] ... version:                0
[    1.207769][    T1] ... bit width:              48
[    1.208440][    T1] ... generic registers:      6
[    1.209097][    T1] ... value mask:             0000ffffffffffff
[    1.209950][    T1] ... max period:             00007fffffffffff
[    1.210795][    T1] ... fixed-purpose events:   0
[    1.211447][    T1] ... event mask:             000000000000003f
[    1.213113][    T1] rcu: Hierarchical SRCU implementation.
[    1.213897][    T1] rcu: 	Max phase no-delay instances is 1000.
[    1.220750][    T1] smp: Bringing up secondary CPUs ...
[    1.222972][    T1] x86: Booting SMP configuration:
[    1.223677][    T1] .... node  #1, CPUs:      #1
[    0.014015][    T0] numa_add_cpu cpu 1 node 0: mask now 0-1
[    0.014015][    T0] numa_add_cpu cpu 1 node 1: mask now 0-1
[    1.227055][    T1]
[    1.227407][    T1] .... node  #0, CPUs:   #2
[    0.014015][    T0] numa_add_cpu cpu 2 node 0: mask now 0-2
[    0.014015][    T0] numa_add_cpu cpu 2 node 1: mask now 0-2
[    1.228597][    T1]
[    1.228597][    T1] .... node  #1, CPUs:   #3
[    0.014015][    T0] numa_add_cpu cpu 3 node 0: mask now 0-3
[    0.014015][    T0] numa_add_cpu cpu 3 node 1: mask now 0-3
[    1.236033][    T1]
[    1.236370][    T1] .... node  #0, CPUs:   #4
[    0.014015][    T0] numa_add_cpu cpu 4 node 0: mask now 0-4
[    0.014015][    T0] numa_add_cpu cpu 4 node 1: mask now 0-4
[    1.237335][    T1]
[    1.237335][    T1] .... node  #1, CPUs:   #5
[    0.014015][    T0] numa_add_cpu cpu 5 node 0: mask now 0-5
[    0.014015][    T0] numa_add_cpu cpu 5 node 1: mask now 0-5
[    1.238496][    T1]
[    1.238496][    T1] .... node  #0, CPUs:   #6
[    0.014015][    T0] numa_add_cpu cpu 6 node 0: mask now 0-6
[    0.014015][    T0] numa_add_cpu cpu 6 node 1: mask now 0-6
[    1.245929][   T15] Callback from call_rcu_tasks_trace() invoked.
[    1.247954][    T1]
[    1.248313][    T1] .... node  #1, CPUs:   #7
[    0.014015][    T0] numa_add_cpu cpu 7 node 0: mask now 0-7
[    0.014015][    T0] numa_add_cpu cpu 7 node 1: mask now 0-7
[    1.249256][    T1] smp: Brought up 2 nodes, 8 CPUs
[    1.249256][    T1] smpboot: Max logical packages: 2
[    1.249256][    T1] smpboot: Total of 8 processors activated (54399.96 BogoMIPS)
[    1.257182][    T1] devtmpfs: initialized
[    1.257182][    T1] x86/mm: Memory block size: 128MB
[    1.291357][    T1] Running RCU synchronous self tests
[    1.295822][    T1] Running RCU synchronous self tests
[    1.296239][    T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[    1.297129][    T1] futex hash table entries: 2048 (order: 6, 262144 bytes, vmalloc)
[    1.298621][    T1] PM: RTC time: 04:59:44, date: 2023-06-19
[    1.306209][    T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[    1.309127][    T1] audit: initializing netlink subsys (disabled)
[    1.309577][   T58] audit: type=2000 audit(1687150785.783:1): state=initialized audit_enabled=0 res=1
[    1.309577][    T1] thermal_sys: Registered thermal governor 'step_wise'
[    1.309577][    T1] thermal_sys: Registered thermal governor 'user_space'
[    1.309577][    T1] cpuidle: using governor menu
[    1.309577][    T1] NET: Registered PF_QIPCRTR protocol family
[    1.317238][    T1] dca service started, version 1.12.1
[    1.317661][    T1] PCI: Using configuration type 1 for base access
[    1.318087][    T1] PCI: Using configuration type 1 for extended access
[    1.321999][    T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages
[    1.321999][    T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page
[    1.325820][    T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages
[    1.326322][    T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page
[    1.328349][    T1] cryptd: max_cpu_qlen set to 1000
[    1.328349][    T1] raid6: skipped pq benchmark and selected avx2x4
[    1.328349][    T1] raid6: using avx2x2 recovery algorithm
[    1.328349][    T1] ACPI: Added _OSI(Module Device)
[    1.328349][    T1] ACPI: Added _OSI(Processor Device)
[    1.328349][    T1] ACPI: Added _OSI(3.0 _SCP Extensions)
[    1.328349][    T1] ACPI: Added _OSI(Processor Aggregator Device)
[    1.352358][    T1] ACPI: 1 ACPI AML tables successfully acquired and loaded
[    1.398614][    T1] ACPI: Interpreter enabled
[    1.399063][    T1] ACPI: PM: (supports S0 S3 S4 S5)
[    1.399423][    T1] ACPI: Using IOAPIC for interrupt routing
[    1.399885][    T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[    1.400563][    T1] PCI: Using E820 reservations for host bridge windows
[    1.402038][    T1] ACPI: Enabled 2 GPEs in block 00 to 0F
[    1.426777][   T14] Callback from call_rcu_tasks() invoked.
[    1.443940][    T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[    1.445835][    T1] acpi PNP0A03:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]
[    1.447465][    T1] PCI host bridge to bus 0000:00
[    1.447809][    T1] pci_bus 0000:00: Unknown NUMA node; performance will be reduced
[    1.448351][    T1] pci_bus 0000:00: root bus resource [io  0x0000-0x0cf7 window]
[    1.448875][    T1] pci_bus 0000:00: root bus resource [io  0x0d00-0xffff window]
[    1.449407][    T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[    1.449974][    T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfffff window]
[    1.450554][    T1] pci_bus 0000:00: root bus resource [mem 0x440000000-0x4bfffffff window]
[    1.451143][    T1] pci_bus 0000:00: root bus resource [bus 00-ff]
[    1.451780][    T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000
[    1.460597][    T1] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100
[    1.461965][    T1] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180
[    1.463406][    T1] pci 0000:00:01.1: reg 0x20: [io  0xc080-0xc08f]
[    1.466217][    T1] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io  0x01f0-0x01f7]
[    1.466782][    T1] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io  0x03f6]
[    1.467297][    T1] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io  0x0170-0x0177]
[    1.467845][    T1] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io  0x0376]
[    1.468661][    T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000
[    1.469393][    T1] pci 0000:00:01.3: quirk: [io  0x0600-0x063f] claimed by PIIX4 ACPI
[    1.469951][    T1] pci 0000:00:01.3: quirk: [io  0x0700-0x070f] claimed by PIIX4 SMB
[    1.470817][    T1] pci 0000:00:02.0: [1234:1111] type 00 class 0x030000
[    1.472010][    T1] pci 0000:00:02.0: reg 0x10: [mem 0xfd000000-0xfdffffff pref]
[    1.473632][    T1] pci 0000:00:02.0: reg 0x18: [mem 0xfebb0000-0xfebb0fff]
[    1.478559][    T1] pci 0000:00:02.0: reg 0x30: [mem 0xfeba0000-0xfebaffff pref]
[    1.479171][    T1] pci 0000:00:02.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff]
[    1.487710][    T1] pci 0000:00:03.0: [8086:100e] type 00 class 0x020000
[    1.488694][    T1] pci 0000:00:03.0: reg 0x10: [mem 0xfeb80000-0xfeb9ffff]
[    1.489628][    T1] pci 0000:00:03.0: reg 0x14: [io  0xc000-0xc03f]
[    1.491993][    T1] pci 0000:00:03.0: reg 0x30: [mem 0xfeb00000-0xfeb7ffff pref]
[    1.500417][    T1] pci 0000:00:04.0: [1af4:1004] type 00 class 0x010000
[    1.501574][    T1] pci 0000:00:04.0: reg 0x10: [io  0xc040-0xc07f]
[    1.503225][    T1] pci 0000:00:04.0: reg 0x14: [mem 0xfebb1000-0xfebb1fff]
[    1.508527][    T1] pci 0000:00:04.0: reg 0x20: [mem 0xfe000000-0xfe003fff 64bit pref]
[    1.521433][    T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10
[    1.522743][    T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10
[    1.524003][    T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11
[    1.526594][    T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11
[    1.527403][    T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9
[    1.532902][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 16/0x8 ignored.
[    1.533527][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.536698][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 17/0x9 ignored.
[    1.536698][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.537770][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 18/0xa ignored.
[    1.538379][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.539695][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 19/0xb ignored.
[    1.540296][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.541609][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 20/0xc ignored.
[    1.542226][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.546262][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 21/0xd ignored.
[    1.546864][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.548202][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 22/0xe ignored.
[    1.548822][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.550134][    T1] APIC: NR_CPUS/possible_cpus limit of 8 reached. Processor 23/0xf ignored.
[    1.550744][    T1] ACPI: Unable to map lapic to logical cpu number
[    1.551856][    T1] iommu: Default domain type: Translated
[    1.551856][    T1] iommu: DMA domain TLB invalidation policy: lazy mode
[    1.551856][    T1] SCSI subsystem initialized
[    1.555927][    T1] libata version 3.00 loaded.
[    1.556196][    T1] ACPI: bus type USB registered
[    1.556634][    T1] usbcore: registered new interface driver usbfs
[    1.557129][    T1] usbcore: registered new interface driver hub
[    1.557640][    T1] usbcore: registered new device driver usb
[    1.558474][    T1] mc: Linux media interface: v0.10
[    1.558881][    T1] videodev: Linux video capture interface: v2.00
[    1.559476][    T1] pps_core: LinuxPPS API ver. 1 registered
[    1.559881][    T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    1.560590][    T1] PTP clock support registered
[    1.561012][    T1] EDAC MC: Ver: 3.0.0
[    1.561012][    T1] Advanced Linux Sound Architecture Driver Initialized.
[    1.566225][    T1] Bluetooth: Core ver 2.22
[    1.566597][    T1] NET: Registered PF_BLUETOOTH protocol family
[    1.567030][    T1] Bluetooth: HCI device and connection manager initialized
[    1.567532][    T1] Bluetooth: HCI socket layer initialized
[    1.567943][    T1] Bluetooth: L2CAP socket layer initialized
[    1.568377][    T1] Bluetooth: SCO socket layer initialized
[    1.568799][    T1] NET: Registered PF_ATMPVC protocol family
[    1.569210][    T1] NET: Registered PF_ATMSVC protocol family
[    1.569688][    T1] NetLabel: Initializing
[    1.569987][    T1] NetLabel:  domain hash size = 128
[    1.570341][    T1] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    1.570888][    T1] NetLabel:  unlabeled traffic allowed by default
[    1.571507][    T1] nfc: nfc_init: NFC Core ver 0.1
[    1.571507][    T1] NET: Registered PF_NFC protocol family
[    1.571507][    T1] PCI: Using ACPI for IRQ routing
[    1.571507][    T1] PCI: pci_cache_line_size set to 64 bytes
[    1.571507][    T1] e820: reserve RAM buffer [mem 0x0009fc00-0x0009ffff]
[    1.571507][    T1] e820: reserve RAM buffer [mem 0xbffdd000-0xbfffffff]
[    1.571507][    T1] pci 0000:00:02.0: vgaarb: setting as boot VGA device
[    1.571507][    T1] pci 0000:00:02.0: vgaarb: bridge control possible
[    1.571507][    T1] pci 0000:00:02.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none
[    1.575821][    T1] vgaarb: loaded
[    1.578245][    T1] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[    1.578661][    T1] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[    1.583390][    T1] clocksource: Switched to clocksource kvm-clock
[    1.584053][    T1] VFS: Disk quotas dquot_6.6.0
[    1.584053][    T1] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    1.584053][    T1] FS-Cache: Loaded
[    1.584053][    T1] CacheFiles: Loaded
[    1.584053][    T1] TOMOYO: 2.6.0
[    1.584053][    T1] Mandatory Access Control activated.
[    1.584053][    T1] AppArmor: AppArmor Filesystem Enabled
[    1.584053][    T1] pnp: PnP ACPI init
[    1.584053][    T1] pnp 00:02: [dma 2]
[    1.584839][    T1] pnp: PnP ACPI: found 6 devices
[    1.601646][    T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[    1.602531][    T1] NET: Registered PF_INET protocol family
[    1.604531][    T1] IP idents hash table entries: 262144 (order: 9, 2097152 bytes, vmalloc)
[    1.609243][    T1] tcp_listen_portaddr_hash hash table entries: 8192 (order: 7, 589824 bytes, vmalloc)
[    1.610238][    T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc)
[    1.611566][    T1] TCP established hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc)
[    1.614830][    T1] TCP bind hash table entries: 65536 (order: 11, 9437184 bytes, vmalloc hugepage)
[    1.617542][    T1] TCP: Hash tables configured (established 131072 bind 65536)
[    1.619440][    T1] MPTCP token hash table entries: 16384 (order: 8, 1441792 bytes, vmalloc)
[    1.621300][    T1] UDP hash table entries: 8192 (order: 8, 1310720 bytes, vmalloc)
[    1.623031][    T1] UDP-Lite hash table entries: 8192 (order: 8, 1310720 bytes, vmalloc)
[    1.624183][    T1] NET: Registered PF_UNIX/PF_LOCAL protocol family
[    1.625422][    T1] RPC: Registered named UNIX socket transport module.
[    1.625915][    T1] RPC: Registered udp transport module.
[    1.626302][    T1] RPC: Registered tcp transport module.
[    1.626681][    T1] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    1.628198][    T1] NET: Registered PF_XDP protocol family
[    1.628605][    T1] pci_bus 0000:00: resource 4 [io  0x0000-0x0cf7 window]
[    1.629105][    T1] pci_bus 0000:00: resource 5 [io  0x0d00-0xffff window]
[    1.629593][    T1] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[    1.630129][    T1] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfffff window]
[    1.630664][    T1] pci_bus 0000:00: resource 8 [mem 0x440000000-0x4bfffffff window]
[    1.631456][    T1] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[    1.631924][    T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[    1.632472][    T1] PCI: CLS 0 bytes, default 64
[    1.632847][    T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
[    1.633348][    T1] software IO TLB: mapped [mem 0x00000000bbfdd000-0x00000000bffdd000] (64MB)
[    1.633970][    T1] ACPI: bus type thunderbolt registered
[    1.636444][   T94] kworker/u17:1 (94) used greatest stack depth: 27984 bytes left
[    1.636492][    T1] kvm_intel: VMX not supported by CPU 0
[    1.637848][    T1] kvm_amd: TSC scaling supported
[    1.638203][    T1] kvm_amd: Nested Virtualization enabled
[    1.638593][    T1] kvm_amd: Nested Paging enabled
[    1.638957][    T1] kvm_amd: Virtual VMLOAD VMSAVE supported
[    1.639359][    T1] kvm_amd: Virtual GIF supported
[    1.639702][    T1] kvm_amd: LBR virtualization supported
[    1.658763][  T118] kworker/u17:1 (118) used greatest stack depth: 27736 bytes left
[    1.659299][  T119] kworker/u17:1 (119) used greatest stack depth: 27424 bytes left
[    3.538161][    T1] Initialise system trusted keyrings
[    3.540149][    T1] workingset: timestamp_bits=40 max_order=22 bucket_order=0
[    3.542108][    T1] zbud: loaded
[    3.545926][    T1] DLM installed
[    3.548051][    T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    3.551907][    T1] NFS: Registering the id_resolver key type
[    3.552570][    T1] Key type id_resolver registered
[    3.553021][    T1] Key type id_legacy registered
[    3.553515][    T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[    3.554391][    T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[    3.558643][    T1] Key type cifs.spnego registered
[    3.559284][    T1] Key type cifs.idmap registered
[    3.560036][    T1] ntfs: driver 2.1.32 [Flags: R/W].
[    3.560690][    T1] ntfs3: Max link count 4000
[    3.561206][    T1] ntfs3: Enabled Linux POSIX ACLs support
[    3.561809][    T1] ntfs3: Read-only LZX/Xpress compression included
[    3.562538][    T1] efs: 1.0a - http://aeschi.ch.eu.org/efs/
[    3.563165][    T1] jffs2: version 2.2. (NAND) (SUMMARY)  © 2001-2006 Red Hat, Inc.
[    3.564687][    T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc.
[    3.565334][    T1] QNX4 filesystem 0.2.3 registered.
[    3.565905][    T1] qnx6: QNX6 filesystem 1.0.0 registered.
[    3.566848][    T1] fuse: init (API version 7.38)
[    3.568315][    T1] orangefs_debugfs_init: called with debug mask: :none: :0:
[    3.569190][    T1] orangefs_init: module version upstream loaded
[    3.569807][    T1] JFS: nTxBlock = 8192, nTxLock = 65536
[    3.581811][    T1] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled
[    3.584495][    T1] 9p: Installing v9fs 9p2000 file system support
[    3.585321][    T1] NILFS version 2 loaded
[    3.585772][    T1] befs: version: 0.9.3
[    3.586389][    T1] ocfs2: Registered cluster interface o2cb
[    3.587315][    T1] ocfs2: Registered cluster interface user
[    3.588250][    T1] OCFS2 User DLM kernel interface loaded
[    3.593706][    T1] gfs2: GFS2 installed
[    3.598792][    T1] ceph: loaded (mds proto 32)
[    3.609570][    T1] NET: Registered PF_ALG protocol family
[    3.610966][    T1] xor: automatically using best checksumming function   avx
[    3.612819][    T1] async_tx: api initialized (async)
[    3.614085][    T1] Key type asymmetric registered
[    3.615270][    T1] Asymmetric key parser 'x509' registered
[    3.616622][    T1] Asymmetric key parser 'pkcs8' registered
[    3.617970][    T1] Key type pkcs7_test registered
[    3.619249][    T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 240)
[    3.621653][    T1] io scheduler mq-deadline registered
[    3.622899][    T1] io scheduler kyber registered
[    3.624212][    T1] io scheduler bfq registered
[    3.628632][    T1] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[    3.634420][    T1] ACPI: button: Power Button [PWRF]
[    3.637023][  T212] kworker/u17:0 (212) used greatest stack depth: 27120 bytes left
[    3.640280][    T1] ioatdma: Intel(R) QuickData Technology Driver 5.00
[    4.264445][    T1] ACPI: _SB_.LNKD: Enabled at IRQ 11
[    4.324425][    T1] N_HDLC line discipline registered with maxframe=4096
[    4.325199][    T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    4.326255][    T1] 00:04: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[    4.330677][    T1] Non-volatile memory driver v1.3
[    4.331275][    T1] Linux agpgart interface v0.103
[    4.332704][    T1] ACPI: bus type drm_connector registered
[    4.334540][    T1] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 0
[    4.336925][    T1] [drm] Initialized vkms 1.0.0 20180514 for vkms on minor 1
[    4.388817][    T1] Console: switching to colour frame buffer device 128x48
[    4.407053][    T1] platform vkms: [drm] fb0: vkmsdrmfb frame buffer device
[    4.407885][    T1] usbcore: registered new interface driver udl
[    4.408738][    T1] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console
[    4.411280][    T1] [drm] Found bochs VGA, ID 0xb0c5.
[    4.411818][    T1] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebb0000.
[    4.413815][    T1] [drm] Found EDID data blob.
[    4.415075][    T1] [drm] Initialized bochs-drm 1.0.0 20130925 for 0000:00:02.0 on minor 2
[    4.419397][    T1] fbcon: bochs-drmdrmfb (fb1) is primary device
[    4.419404][    T1] fbcon: Remapping primary device, fb1, to tty 1-63
[    8.282098][    T1] bochs-drm 0000:00:02.0: [drm] fb1: bochs-drmdrmfb frame buffer device
[    8.288808][   T16] Floppy drive(s): fd0 is 2.88M AMI BIOS
[    8.300786][    T1] brd: module loaded
[    8.314449][   T16] FDC 0 is a S82078B
[    8.323320][    T1] loop: module loaded
[    8.354164][    T1] zram: Added device: zram0
[    8.357229][    T1] null_blk: disk nullb0 created
[    8.357745][    T1] null_blk: module loaded
[    8.358254][    T1] Guest personality initialized and is inactive
[    8.359140][    T1] VMCI host device registered (name=vmci, major=10, minor=118)
[    8.359949][    T1] Initialized host personality
[    8.360517][    T1] usbcore: registered new interface driver rtsx_usb
[    8.361380][    T1] usbcore: registered new interface driver viperboard
[    8.362185][    T1] usbcore: registered new interface driver dln2
[    8.362967][    T1] usbcore: registered new interface driver pn533_usb
[    8.364778][    T1] nfcsim 0.2 initialized
[    8.365305][    T1] usbcore: registered new interface driver port100
[    8.366088][    T1] usbcore: registered new interface driver nfcmrvl
[    8.367641][    T1] Loading iSCSI transport class v2.0-870.
[    8.372066][    T1] scsi host0: Virtio SCSI HBA
[    8.377057][    T1] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[    8.377817][   T97] scsi 0:0:0:0: Direct-Access     QEMU     QEMU HARDDISK    2.5+ PQ: 0 ANSI: 5
[    8.381272][    T1] ata_piix 0000:00:01.1: version 2.13
[    8.383706][    T1] scsi host1: ata_piix
[    8.385129][    T1] scsi host2: ata_piix
[    8.385839][    T1] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc080 irq 14
[    8.386703][    T1] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc088 irq 15
[    8.388729][    T1] Rounding down aligned max_sectors from 4294967295 to 4294967288
[    8.389866][    T1] db_root: cannot open: /etc/target
[    8.390714][    T1] slram: not enough parameters.
[    8.392829][    T1] ftl_cs: FTL header not found.
[    8.399540][    T1] wireguard: WireGuard 1.0.0 loaded. See www.wireguard.com for information.
[    8.400508][    T1] wireguard: Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
[    8.401676][    T1] eql: Equalizer2002: Simon Janes (simon@ncm.com) and David S. Miller (davem@redhat.com)
[    8.404382][    T1] MACsec IEEE 802.1AE
[    8.406624][    T1] tun: Universal TUN/TAP device driver, 1.6
[    8.407625][    T1] vcan: Virtual CAN interface driver
[    8.408220][    T1] vxcan: Virtual CAN Tunnel driver
[    8.408805][    T1] slcan: serial line CAN interface driver
[    8.409448][    T1] CAN device driver interface
[    8.410034][    T1] usbcore: registered new interface driver usb_8dev
[    8.410821][    T1] usbcore: registered new interface driver ems_usb
[    8.411570][    T1] usbcore: registered new interface driver gs_usb
[    8.412350][    T1] usbcore: registered new interface driver kvaser_usb
[    8.413125][    T1] usbcore: registered new interface driver mcba_usb
[    8.413866][    T1] usbcore: registered new interface driver peak_usb
[    8.414720][    T1] e100: Intel(R) PRO/100 Network Driver
[    8.415328][    T1] e100: Copyright(c) 1999-2006 Intel Corporation
[    8.416075][    T1] e1000: Intel(R) PRO/1000 Network Driver
[    8.416677][    T1] e1000: Copyright (c) 1999-2006 Intel Corporation.
[    8.509400][   T97] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    8.509659][    C2] sd 0:0:0:0: Power-on or device reset occurred
[    8.510996][ T1068] sd 0:0:0:0: [sda] 2097458 512-byte logical blocks: (1.07 GB/1.00 GiB)
[    8.511984][ T1068] sd 0:0:0:0: [sda] Write Protect is off
[    8.512598][ T1068] sd 0:0:0:0: [sda] Mode Sense: 63 00 00 08
[    8.512765][ T1068] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[    8.519194][ T1068]  sda: sda1
[    8.520264][ T1068] sd 0:0:0:0: [sda] Attached SCSI disk
[    9.059201][    T1] ACPI: _SB_.LNKC: Enabled at IRQ 10
[    9.414468][    T1] e1000 0000:00:03.0 eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56
[    9.415288][    T1] e1000 0000:00:03.0 eth0: Intel(R) PRO/1000 Network Connection
[    9.416166][    T1] e1000e: Intel(R) PRO/1000 Network Driver
[    9.416778][    T1] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[    9.417909][    T1] mkiss: AX.25 Multikiss, Hans Albas PE1AYX
[    9.418524][    T1] AX.25: 6pack driver, Revision: 0.3.0
[    9.419105][    T1] AX.25: bpqether driver version 004
[    9.419674][    T1] PPP generic driver version 2.4.2
[    9.420490][    T1] PPP BSD Compression module registered
[    9.421073][    T1] PPP Deflate Compression module registered
[    9.421705][    T1] PPP MPPE Compression module registered
[    9.422290][    T1] NET: Registered PF_PPPOX protocol family
[    9.422921][    T1] PPTP driver version 0.8.5
[    9.423835][    T1] SLIP: version 0.8.4-NET3.019-NEWTTY (dynamic channels, max=256) (6 bit encapsulation enabled).
[    9.424965][    T1] CSLIP: code copyright 1989 Regents of the University of California.
[    9.425814][    T1] SLIP linefill/keepalive option.
[    9.426339][    T1] hdlc: HDLC support module revision 1.22
[    9.426942][    T1] LAPB Ethernet driver version 0.02
[    9.427663][    T1] usbcore: registered new interface driver ath9k_htc
[    9.428418][    T1] usbcore: registered new interface driver carl9170
[    9.429175][    T1] usbcore: registered new interface driver ath6kl_usb
[    9.429946][    T1] usbcore: registered new interface driver ar5523
[    9.430705][    T1] usbcore: registered new interface driver ath10k_usb
[    9.431480][    T1] usbcore: registered new interface driver rndis_wlan
[    9.432293][    T1] mac80211_hwsim: initializing netlink
[    9.433384][    T1] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[    9.436328][    T1] ieee80211 phy1: Selected rate control algorithm 'minstrel_ht'
[    9.439012][    T1] usbcore: registered new interface driver atusb
[    9.442328][    T1] mac802154_hwsim mac802154_hwsim: Added 2 mac802154 hwsim hardware radios
[    9.443406][    T1] VMware vmxnet3 virtual NIC driver - version 1.7.0.0-k-NAPI
[    9.444373][    T1] usbcore: registered new interface driver catc
[    9.445094][    T1] usbcore: registered new interface driver kaweth
[    9.445776][    T1] pegasus: Pegasus/Pegasus II USB Ethernet driver
[    9.446527][    T1] usbcore: registered new interface driver pegasus
[    9.447279][    T1] usbcore: registered new interface driver rtl8150
[    9.448004][    T1] usbcore: registered new device driver r8152-cfgselector
[    9.448818][    T1] usbcore: registered new interface driver r8152
[    9.449468][    T1] hso: drivers/net/usb/hso.c: Option Wireless
[    9.450180][    T1] usbcore: registered new interface driver hso
[    9.450867][    T1] usbcore: registered new interface driver lan78xx
[    9.451603][    T1] usbcore: registered new interface driver asix
[    9.452305][    T1] usbcore: registered new interface driver ax88179_178a
[    9.453085][    T1] usbcore: registered new interface driver cdc_ether
[    9.453830][    T1] usbcore: registered new interface driver cdc_eem
[    9.454579][    T1] usbcore: registered new interface driver dm9601
[    9.455315][    T1] usbcore: registered new interface driver sr9700
[    9.456038][    T1] usbcore: registered new interface driver CoreChips
[    9.456820][    T1] usbcore: registered new interface driver smsc75xx
[    9.457560][    T1] usbcore: registered new interface driver smsc95xx
[    9.458312][    T1] usbcore: registered new interface driver gl620a
[    9.459022][    T1] usbcore: registered new interface driver net1080
[    9.459768][    T1] usbcore: registered new interface driver plusb
[    9.460492][    T1] usbcore: registered new interface driver rndis_host
[    9.461254][    T1] usbcore: registered new interface driver cdc_subset
[    9.462012][    T1] usbcore: registered new interface driver zaurus
[    9.462751][    T1] usbcore: registered new interface driver MOSCHIP usb-ethernet driver
[    9.463677][    T1] usbcore: registered new interface driver int51x1
[    9.464438][    T1] usbcore: registered new interface driver cdc_phonet
[    9.465146][    T1] usbcore: registered new interface driver kalmia
[    9.465740][    T1] usbcore: registered new interface driver ipheth
[    9.466329][    T1] usbcore: registered new interface driver sierra_net
[    9.467132][    T1] usbcore: registered new interface driver cx82310_eth
[    9.467928][    T1] usbcore: registered new interface driver cdc_ncm
[    9.468714][    T1] usbcore: registered new interface driver huawei_cdc_ncm
[    9.469500][    T1] usbcore: registered new interface driver lg-vl600
[    9.469979][    T1] usbcore: registered new interface driver qmi_wwan
[    9.470454][    T1] usbcore: registered new interface driver cdc_mbim
[    9.470946][    T1] usbcore: registered new interface driver ch9200
[    9.471408][    T1] usbcore: registered new interface driver r8153_ecm
[    9.472974][    T1] VFIO - User Level meta-driver version: 0.3
[    9.474907][    T1] aoe: AoE v85 initialised.
[    9.476548][    T1] SPI driver max3421-hcd has no spi_device_id for maxim,max3421
[    9.477201][    T1] usbcore: registered new interface driver cdc_acm
[    9.477647][    T1] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[    9.478283][    T1] usbcore: registered new interface driver usblp
[    9.478751][    T1] usbcore: registered new interface driver cdc_wdm
[    9.479232][    T1] usbcore: registered new interface driver usbtmc
[    9.479909][    T1] usbcore: registered new interface driver uas
[    9.480379][    T1] usbcore: registered new interface driver usb-storage
[    9.480898][    T1] usbcore: registered new interface driver ums-alauda
[    9.481396][    T1] usbcore: registered new interface driver ums-cypress
[    9.481897][    T1] usbcore: registered new interface driver ums-datafab
[    9.482394][    T1] usbcore: registered new interface driver ums_eneub6250
[    9.482904][    T1] usbcore: registered new interface driver ums-freecom
[    9.483392][    T1] usbcore: registered new interface driver ums-isd200
[    9.483891][    T1] usbcore: registered new interface driver ums-jumpshot
[    9.484420][    T1] usbcore: registered new interface driver ums-karma
[    9.484912][    T1] usbcore: registered new interface driver ums-onetouch
[    9.485419][    T1] usbcore: registered new interface driver ums-realtek
[    9.485915][    T1] usbcore: registered new interface driver ums-sddr09
[    9.486412][    T1] usbcore: registered new interface driver ums-sddr55
[    9.486904][    T1] usbcore: registered new interface driver ums-usbat
[    9.487407][    T1] usbcore: registered new interface driver mdc800
[    9.487837][    T1] mdc800: v0.7.5 (30/10/2000):USB Driver for Mustek MDC800 Digital Camera
[    9.488452][    T1] usbcore: registered new interface driver microtekX6
[    9.489014][    T1] usbcore: registered new interface driver usbserial_generic
[    9.489670][    T1] usbserial: USB Serial support registered for generic
[    9.490188][    T1] usbcore: registered new interface driver aircable
[    9.490685][    T1] usbserial: USB Serial support registered for aircable
[    9.491200][    T1] usbcore: registered new interface driver ark3116
[    9.491672][    T1] usbserial: USB Serial support registered for ark3116
[    9.492186][    T1] usbcore: registered new interface driver belkin_sa
[    9.492681][    T1] usbserial: USB Serial support registered for Belkin / Peracom / GoHubs USB Serial Adapter
[    9.493402][    T1] usbcore: registered new interface driver ch341
[    9.493867][    T1] usbserial: USB Serial support registered for ch341-uart
[    9.494404][    T1] usbcore: registered new interface driver cp210x
[    9.494878][    T1] usbserial: USB Serial support registered for cp210x
[    9.495372][    T1] usbcore: registered new interface driver cyberjack
[    9.495850][    T1] usbserial: USB Serial support registered for Reiner SCT Cyberjack USB card reader
[    9.496517][    T1] usbcore: registered new interface driver cypress_m8
[    9.497040][    T1] usbserial: USB Serial support registered for DeLorme Earthmate USB
[    9.497614][    T1] usbserial: USB Serial support registered for HID->COM RS232 Adapter
[    9.498186][    T1] usbserial: USB Serial support registered for Nokia CA-42 V2 Adapter
[    9.498808][    T1] usbcore: registered new interface driver usb_debug
[    9.499302][    T1] usbserial: USB Serial support registered for debug
[    9.499784][    T1] usbserial: USB Serial support registered for xhci_dbc
[    9.500287][    T1] usbcore: registered new interface driver digi_acceleport
[    9.500801][    T1] usbserial: USB Serial support registered for Digi 2 port USB adapter
[    9.501387][    T1] usbserial: USB Serial support registered for Digi 4 port USB adapter
[    9.501976][    T1] usbcore: registered new interface driver io_edgeport
[    9.502477][    T1] usbserial: USB Serial support registered for Edgeport 2 port adapter
[    9.503064][    T1] usbserial: USB Serial support registered for Edgeport 4 port adapter
[    9.503665][    T1] usbserial: USB Serial support registered for Edgeport 8 port adapter
[    9.504321][    T1] usbserial: USB Serial support registered for EPiC device
[    9.504857][    T1] usbcore: registered new interface driver io_ti
[    9.505313][    T1] usbserial: USB Serial support registered for Edgeport TI 1 port adapter
[    9.505920][    T1] usbserial: USB Serial support registered for Edgeport TI 2 port adapter
[    9.506531][    T1] usbcore: registered new interface driver empeg
[    9.506988][    T1] usbserial: USB Serial support registered for empeg
[    9.507483][    T1] usbcore: registered new interface driver f81534a_ctrl
[    9.508004][    T1] usbcore: registered new interface driver f81232
[    9.508488][    T1] usbserial: USB Serial support registered for f81232
[    9.508986][    T1] usbserial: USB Serial support registered for f81534a
[    9.509489][    T1] usbcore: registered new interface driver f81534
[    9.509957][    T1] usbserial: USB Serial support registered for Fintek F81532/F81534
[    9.510525][    T1] usbcore: registered new interface driver ftdi_sio
[    9.511022][    T1] usbserial: USB Serial support registered for FTDI USB Serial Device
[    9.511601][    T1] usbcore: registered new interface driver garmin_gps
[    9.512102][    T1] usbserial: USB Serial support registered for Garmin GPS usb/tty
[    9.512669][    T1] usbcore: registered new interface driver ipaq
[    9.513123][    T1] usbserial: USB Serial support registered for PocketPC PDA
[    9.513661][    T1] usbcore: registered new interface driver ipw
[    9.514149][    T1] usbserial: USB Serial support registered for IPWireless converter
[    9.514730][    T1] usbcore: registered new interface driver ir_usb
[    9.515193][    T1] usbserial: USB Serial support registered for IR Dongle
[    9.515707][    T1] usbcore: registered new interface driver iuu_phoenix
[    9.516212][    T1] usbserial: USB Serial support registered for iuu_phoenix
[    9.516731][    T1] usbcore: registered new interface driver keyspan
[    9.517201][    T1] usbserial: USB Serial support registered for Keyspan - (without firmware)
[    9.517812][    T1] usbserial: USB Serial support registered for Keyspan 1 port adapter
[    9.518398][    T1] usbserial: USB Serial support registered for Keyspan 2 port adapter
[    9.518976][    T1] usbserial: USB Serial support registered for Keyspan 4 port adapter
[    9.519569][    T1] usbcore: registered new interface driver keyspan_pda
[    9.520074][    T1] usbserial: USB Serial support registered for Keyspan PDA
[    9.520603][    T1] usbserial: USB Serial support registered for Keyspan PDA - (prerenumeration)
[    9.521240][    T1] usbcore: registered new interface driver kl5kusb105
[    9.521725][    T1] usbserial: USB Serial support registered for KL5KUSB105D / PalmConnect
[    9.522329][    T1] usbcore: registered new interface driver kobil_sct
[    9.522812][    T1] usbserial: USB Serial support registered for KOBIL USB smart card terminal
[    9.523447][    T1] usbcore: registered new interface driver mct_u232
[    9.523934][    T1] usbserial: USB Serial support registered for MCT U232
[    9.524458][    T1] usbcore: registered new interface driver metro_usb
[    9.524955][    T1] usbserial: USB Serial support registered for Metrologic USB to Serial
[    9.525563][    T1] usbcore: registered new interface driver mos7720
[    9.526036][    T1] usbserial: USB Serial support registered for Moschip 2 port adapter
[    9.526619][    T1] usbcore: registered new interface driver mos7840
[    9.527101][    T1] usbserial: USB Serial support registered for Moschip 7840/7820 USB Serial Driver
[    9.527765][    T1] usbcore: registered new interface driver mxuport
[    9.528243][    T1] usbserial: USB Serial support registered for MOXA UPort
[    9.528775][    T1] usbcore: registered new interface driver navman
[    9.529250][    T1] usbserial: USB Serial support registered for navman
[    9.529745][    T1] usbcore: registered new interface driver omninet
[    9.530222][    T1] usbserial: USB Serial support registered for ZyXEL - omni.net usb
[    9.530809][    T1] usbcore: registered new interface driver opticon
[    9.531298][    T1] usbserial: USB Serial support registered for opticon
[    9.531807][    T1] usbcore: registered new interface driver option
[    9.532280][    T1] usbserial: USB Serial support registered for GSM modem (1-port)
[    9.532857][    T1] usbcore: registered new interface driver oti6858
[    9.533340][    T1] usbserial: USB Serial support registered for oti6858
[    9.533853][    T1] usbcore: registered new interface driver pl2303
[    9.534382][    T1] usbserial: USB Serial support registered for pl2303
[    9.534896][    T1] usbcore: registered new interface driver qcaux
[    9.535374][    T1] usbserial: USB Serial support registered for qcaux
[    9.535880][    T1] usbcore: registered new interface driver qcserial
[    9.536363][    T1] usbserial: USB Serial support registered for Qualcomm USB modem
[    9.536943][    T1] usbcore: registered new interface driver quatech2
[    9.537433][    T1] usbserial: USB Serial support registered for Quatech 2nd gen USB to Serial Driver
[    9.538116][    T1] usbcore: registered new interface driver safe_serial
[    9.538620][    T1] usbserial: USB Serial support registered for safe_serial
[    9.539150][    T1] usbcore: registered new interface driver sierra
[    9.539629][    T1] usbserial: USB Serial support registered for Sierra USB modem
[    9.540190][    T1] usbcore: registered new interface driver usb_serial_simple
[    9.540725][    T1] usbserial: USB Serial support registered for carelink
[    9.541242][    T1] usbserial: USB Serial support registered for zio
[    9.541730][    T1] usbserial: USB Serial support registered for funsoft
[    9.542234][    T1] usbserial: USB Serial support registered for flashloader
[    9.542763][    T1] usbserial: USB Serial support registered for google
[    9.543259][    T1] usbserial: USB Serial support registered for libtransistor
[    9.543799][    T1] usbserial: USB Serial support registered for vivopay
[    9.544314][    T1] usbserial: USB Serial support registered for moto_modem
[    9.544835][    T1] usbserial: USB Serial support registered for motorola_tetra
[    9.545371][    T1] usbserial: USB Serial support registered for nokia
[    9.545867][    T1] usbserial: USB Serial support registered for novatel_gps
[    9.546390][    T1] usbserial: USB Serial support registered for hp4x
[    9.546875][    T1] usbserial: USB Serial support registered for suunto
[    9.547372][    T1] usbserial: USB Serial support registered for siemens_mpi
[    9.547906][    T1] usbcore: registered new interface driver spcp8x5
[    9.548388][    T1] usbserial: USB Serial support registered for SPCP8x5
[    9.548899][    T1] usbcore: registered new interface driver ssu100
[    9.549366][    T1] usbserial: USB Serial support registered for Quatech SSU-100 USB to Serial Driver
[    9.550041][    T1] usbcore: registered new interface driver symbolserial
[    9.550548][    T1] usbserial: USB Serial support registered for symbol
[    9.551044][    T1] usbcore: registered new interface driver ti_usb_3410_5052
[    9.551574][    T1] usbserial: USB Serial support registered for TI USB 3410 1 port adapter
[    9.552189][    T1] usbserial: USB Serial support registered for TI USB 5052 2 port adapter
[    9.552818][    T1] usbcore: registered new interface driver upd78f0730
[    9.553309][    T1] usbserial: USB Serial support registered for upd78f0730
[    9.553831][    T1] usbcore: registered new interface driver visor
[    9.554321][    T1] usbserial: USB Serial support registered for Handspring Visor / Palm OS
[    9.554928][    T1] usbserial: USB Serial support registered for Sony Clie 5.0
[    9.555462][    T1] usbserial: USB Serial support registered for Sony Clie 3.5
[    9.556021][    T1] usbcore: registered new interface driver wishbone_serial
[    9.556574][    T1] usbserial: USB Serial support registered for wishbone_serial
[    9.557131][    T1] usbcore: registered new interface driver whiteheat
[    9.557627][    T1] usbserial: USB Serial support registered for Connect Tech - WhiteHEAT - (prerenumeration)
[    9.558349][    T1] usbserial: USB Serial support registered for Connect Tech - WhiteHEAT
[    9.558954][    T1] usbcore: registered new interface driver xr_serial
[    9.559447][    T1] usbserial: USB Serial support registered for xr_serial
[    9.559965][    T1] usbcore: registered new interface driver xsens_mt
[    9.560448][    T1] usbserial: USB Serial support registered for xsens_mt
[    9.560969][    T1] usbcore: registered new interface driver adutux
[    9.561452][    T1] usbcore: registered new interface driver appledisplay
[    9.561967][    T1] usbcore: registered new interface driver cypress_cy7c63
[    9.562499][    T1] usbcore: registered new interface driver cytherm
[    9.562989][    T1] usbcore: registered new interface driver emi26 - firmware loader
[    9.563568][    T1] usbcore: registered new interface driver emi62 - firmware loader
[    9.564171][    T1] usbcore: registered new interface driver idmouse
[    9.564656][    T1] usbcore: registered new interface driver iowarrior
[    9.565178][    T1] usbcore: registered new interface driver isight_firmware
[    9.565731][    T1] usbcore: registered new interface driver usblcd
[    9.566208][    T1] usbcore: registered new interface driver ldusb
[    9.566683][    T1] usbcore: registered new interface driver legousbtower
[    9.567206][    T1] usbcore: registered new interface driver usbtest
[    9.567694][    T1] usbcore: registered new interface driver usb_ehset_test
[    9.568230][    T1] usbcore: registered new interface driver trancevibrator
[    9.568778][    T1] usbcore: registered new interface driver uss720
[    9.569217][    T1] uss720: USB Parport Cable driver for Cables using the Lucent Technologies USS720 Chip
[    9.569872][    T1] uss720: NOTE: this is a special purpose driver to allow nonstandard
[    9.570424][    T1] uss720: protocols (eg. bitbang) over USS720 usb to parallel cables
[    9.570969][    T1] uss720: If you just want to connect to a printer, use usblp instead
[    9.571573][    T1] usbcore: registered new interface driver usbsevseg
[    9.572070][    T1] usbcore: registered new interface driver yurex
[    9.572705][    T1] usbcore: registered new interface driver chaoskey
[    9.573204][    T1] usbcore: registered new interface driver sisusb
[    9.573686][    T1] usbcore: registered new interface driver lvs
[    9.574194][    T1] usbcore: registered new interface driver cxacru
[    9.574677][    T1] usbcore: registered new interface driver speedtch
[    9.575176][    T1] usbcore: registered new interface driver ueagle-atm
[    9.575639][    T1] xusbatm: malformed module parameters
[    9.576484][    T1] dummy_hcd dummy_hcd.0: USB Host+Gadget Emulator, driver 02 May 2005
[    9.577064][    T1] dummy_hcd dummy_hcd.0: Dummy host controller
[    9.577944][    T1] dummy_hcd dummy_hcd.0: new USB bus registered, assigned bus number 1
[    9.578941][    T1] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.579594][    T1] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.580149][    T1] usb usb1: Product: Dummy host controller
[    9.580551][    T1] usb usb1: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.581122][    T1] usb usb1: SerialNumber: dummy_hcd.0
[    9.582647][    T1] hub 1-0:1.0: USB hub found
[    9.583075][    T1] hub 1-0:1.0: 1 port detected
[    9.584963][    T1] dummy_hcd dummy_hcd.1: USB Host+Gadget Emulator, driver 02 May 2005
[    9.585538][    T1] dummy_hcd dummy_hcd.1: Dummy host controller
[    9.586177][    T1] dummy_hcd dummy_hcd.1: new USB bus registered, assigned bus number 2
[    9.586954][    T1] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.587580][    T1] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.588132][    T1] usb usb2: Product: Dummy host controller
[    9.588531][    T1] usb usb2: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.589095][    T1] usb usb2: SerialNumber: dummy_hcd.1
[    9.590159][    T1] hub 2-0:1.0: USB hub found
[    9.590527][    T1] hub 2-0:1.0: 1 port detected
[    9.591556][    T1] dummy_hcd dummy_hcd.2: USB Host+Gadget Emulator, driver 02 May 2005
[    9.592122][    T1] dummy_hcd dummy_hcd.2: Dummy host controller
[    9.592782][    T1] dummy_hcd dummy_hcd.2: new USB bus registered, assigned bus number 3
[    9.593567][    T1] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.594223][    T1] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.594782][    T1] usb usb3: Product: Dummy host controller
[    9.595180][    T1] usb usb3: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.595751][    T1] usb usb3: SerialNumber: dummy_hcd.2
[    9.596781][    T1] hub 3-0:1.0: USB hub found
[    9.597146][    T1] hub 3-0:1.0: 1 port detected
[    9.598147][    T1] dummy_hcd dummy_hcd.3: USB Host+Gadget Emulator, driver 02 May 2005
[    9.598719][    T1] dummy_hcd dummy_hcd.3: Dummy host controller
[    9.599374][    T1] dummy_hcd dummy_hcd.3: new USB bus registered, assigned bus number 4
[    9.600150][    T1] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.600783][    T1] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.601331][    T1] usb usb4: Product: Dummy host controller
[    9.601728][    T1] usb usb4: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.602299][    T1] usb usb4: SerialNumber: dummy_hcd.3
[    9.603338][    T1] hub 4-0:1.0: USB hub found
[    9.603732][    T1] hub 4-0:1.0: 1 port detected
[    9.604770][    T1] dummy_hcd dummy_hcd.4: USB Host+Gadget Emulator, driver 02 May 2005
[    9.605346][    T1] dummy_hcd dummy_hcd.4: Dummy host controller
[    9.606012][    T1] dummy_hcd dummy_hcd.4: new USB bus registered, assigned bus number 5
[    9.606791][    T1] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.607415][    T1] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.607971][    T1] usb usb5: Product: Dummy host controller
[    9.608367][    T1] usb usb5: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.608946][    T1] usb usb5: SerialNumber: dummy_hcd.4
[    9.610032][    T1] hub 5-0:1.0: USB hub found
[    9.610399][    T1] hub 5-0:1.0: 1 port detected
[    9.611386][    T1] dummy_hcd dummy_hcd.5: USB Host+Gadget Emulator, driver 02 May 2005
[    9.611969][    T1] dummy_hcd dummy_hcd.5: Dummy host controller
[    9.612644][    T1] dummy_hcd dummy_hcd.5: new USB bus registered, assigned bus number 6
[    9.613430][    T1] usb usb6: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.614083][    T1] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.614644][    T1] usb usb6: Product: Dummy host controller
[    9.615047][    T1] usb usb6: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.615613][    T1] usb usb6: SerialNumber: dummy_hcd.5
[    9.616647][    T1] hub 6-0:1.0: USB hub found
[    9.617023][    T1] hub 6-0:1.0: 1 port detected
[    9.618047][    T1] dummy_hcd dummy_hcd.6: USB Host+Gadget Emulator, driver 02 May 2005
[    9.618621][    T1] dummy_hcd dummy_hcd.6: Dummy host controller
[    9.619289][    T1] dummy_hcd dummy_hcd.6: new USB bus registered, assigned bus number 7
[    9.620066][    T1] usb usb7: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.620696][    T1] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.621251][    T1] usb usb7: Product: Dummy host controller
[    9.621648][    T1] usb usb7: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.622216][    T1] usb usb7: SerialNumber: dummy_hcd.6
[    9.623254][    T1] hub 7-0:1.0: USB hub found
[    9.623618][    T1] hub 7-0:1.0: 1 port detected
[    9.624656][    T1] dummy_hcd dummy_hcd.7: USB Host+Gadget Emulator, driver 02 May 2005
[    9.625236][    T1] dummy_hcd dummy_hcd.7: Dummy host controller
[    9.625897][    T1] dummy_hcd dummy_hcd.7: new USB bus registered, assigned bus number 8
[    9.626677][    T1] usb usb8: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.627307][    T1] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.627856][    T1] usb usb8: Product: Dummy host controller
[    9.628256][    T1] usb usb8: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 dummy_hcd
[    9.628841][    T1] usb usb8: SerialNumber: dummy_hcd.7
[    9.629876][    T1] hub 8-0:1.0: USB hub found
[    9.630245][    T1] hub 8-0:1.0: 1 port detected
[    9.634801][    T1] gadgetfs: USB Gadget filesystem, version 24 Aug 2004
[    9.635875][    T1] vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller
[    9.636602][    T1] vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number 9
[    9.637292][    T1] vhci_hcd: created sysfs vhci_hcd.0
[    9.637882][    T1] usb usb9: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.638515][    T1] usb usb9: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.639066][    T1] usb usb9: Product: USB/IP Virtual Host Controller
[    9.639510][    T1] usb usb9: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.640070][    T1] usb usb9: SerialNumber: vhci_hcd.0
[    9.641138][    T1] hub 9-0:1.0: USB hub found
[    9.641532][    T1] hub 9-0:1.0: 8 ports detected
[    9.643654][    T1] vhci_hcd vhci_hcd.0: USB/IP Virtual Host Controller
[    9.644416][    T1] vhci_hcd vhci_hcd.0: new USB bus registered, assigned bus number 10
[    9.645095][    T1] usb usb10: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.645897][    T1] usb usb10: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.646533][    T1] usb usb10: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.647090][    T1] usb usb10: Product: USB/IP Virtual Host Controller
[    9.647544][    T1] usb usb10: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.648107][    T1] usb usb10: SerialNumber: vhci_hcd.0
[    9.649170][    T1] hub 10-0:1.0: USB hub found
[    9.649540][    T1] hub 10-0:1.0: 8 ports detected
[    9.652077][    T1] vhci_hcd vhci_hcd.1: USB/IP Virtual Host Controller
[    9.652779][    T1] vhci_hcd vhci_hcd.1: new USB bus registered, assigned bus number 11
[    9.653540][    T1] usb usb11: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.654201][    T1] usb usb11: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.654761][    T1] usb usb11: Product: USB/IP Virtual Host Controller
[    9.655221][    T1] usb usb11: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.655780][    T1] usb usb11: SerialNumber: vhci_hcd.1
[    9.656813][    T1] hub 11-0:1.0: USB hub found
[    9.657185][    T1] hub 11-0:1.0: 8 ports detected
[    9.659258][    T1] vhci_hcd vhci_hcd.1: USB/IP Virtual Host Controller
[    9.659957][    T1] vhci_hcd vhci_hcd.1: new USB bus registered, assigned bus number 12
[    9.660611][    T1] usb usb12: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.661392][    T1] usb usb12: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.662028][    T1] usb usb12: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.662590][    T1] usb usb12: Product: USB/IP Virtual Host Controller
[    9.663046][    T1] usb usb12: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.663613][    T1] usb usb12: SerialNumber: vhci_hcd.1
[    9.664668][    T1] hub 12-0:1.0: USB hub found
[    9.665042][    T1] hub 12-0:1.0: 8 ports detected
[    9.667537][    T1] vhci_hcd vhci_hcd.2: USB/IP Virtual Host Controller
[    9.668223][    T1] vhci_hcd vhci_hcd.2: new USB bus registered, assigned bus number 13
[    9.668993][    T1] usb usb13: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.669632][    T1] usb usb13: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.670192][    T1] usb usb13: Product: USB/IP Virtual Host Controller
[    9.670647][    T1] usb usb13: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.671212][    T1] usb usb13: SerialNumber: vhci_hcd.2
[    9.672249][    T1] hub 13-0:1.0: USB hub found
[    9.672626][    T1] hub 13-0:1.0: 8 ports detected
[    9.674697][    T1] vhci_hcd vhci_hcd.2: USB/IP Virtual Host Controller
[    9.675393][    T1] vhci_hcd vhci_hcd.2: new USB bus registered, assigned bus number 14
[    9.676040][    T1] usb usb14: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.676818][    T1] usb usb14: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.677454][    T1] usb usb14: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.678011][    T1] usb usb14: Product: USB/IP Virtual Host Controller
[    9.678461][    T1] usb usb14: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.679034][    T1] usb usb14: SerialNumber: vhci_hcd.2
[    9.680067][    T1] hub 14-0:1.0: USB hub found
[    9.680441][    T1] hub 14-0:1.0: 8 ports detected
[    9.682964][    T1] vhci_hcd vhci_hcd.3: USB/IP Virtual Host Controller
[    9.683708][    T1] vhci_hcd vhci_hcd.3: new USB bus registered, assigned bus number 15
[    9.684498][    T1] usb usb15: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.685136][    T1] usb usb15: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.685689][    T1] usb usb15: Product: USB/IP Virtual Host Controller
[    9.686151][    T1] usb usb15: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.686727][    T1] usb usb15: SerialNumber: vhci_hcd.3
[    9.687749][    T1] hub 15-0:1.0: USB hub found
[    9.688120][    T1] hub 15-0:1.0: 8 ports detected
[    9.690192][    T1] vhci_hcd vhci_hcd.3: USB/IP Virtual Host Controller
[    9.690891][    T1] vhci_hcd vhci_hcd.3: new USB bus registered, assigned bus number 16
[    9.691530][    T1] usb usb16: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.692308][    T1] usb usb16: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.692949][    T1] usb usb16: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.693506][    T1] usb usb16: Product: USB/IP Virtual Host Controller
[    9.693965][    T1] usb usb16: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.694555][    T1] usb usb16: SerialNumber: vhci_hcd.3
[    9.695583][    T1] hub 16-0:1.0: USB hub found
[    9.695963][    T1] hub 16-0:1.0: 8 ports detected
[    9.698480][    T1] vhci_hcd vhci_hcd.4: USB/IP Virtual Host Controller
[    9.699177][    T1] vhci_hcd vhci_hcd.4: new USB bus registered, assigned bus number 17
[    9.699937][    T1] usb usb17: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.700579][    T1] usb usb17: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.701138][    T1] usb usb17: Product: USB/IP Virtual Host Controller
[    9.701593][    T1] usb usb17: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.702156][    T1] usb usb17: SerialNumber: vhci_hcd.4
[    9.703178][    T1] hub 17-0:1.0: USB hub found
[    9.703549][    T1] hub 17-0:1.0: 8 ports detected
[    9.705652][    T1] vhci_hcd vhci_hcd.4: USB/IP Virtual Host Controller
[    9.706353][    T1] vhci_hcd vhci_hcd.4: new USB bus registered, assigned bus number 18
[    9.707000][    T1] usb usb18: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.707795][    T1] usb usb18: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.708423][    T1] usb usb18: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.708984][    T1] usb usb18: Product: USB/IP Virtual Host Controller
[    9.709441][    T1] usb usb18: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.710011][    T1] usb usb18: SerialNumber: vhci_hcd.4
[    9.711164][    T1] hub 18-0:1.0: USB hub found
[    9.711535][    T1] hub 18-0:1.0: 8 ports detected
[    9.714015][    T1] vhci_hcd vhci_hcd.5: USB/IP Virtual Host Controller
[    9.714764][    T1] vhci_hcd vhci_hcd.5: new USB bus registered, assigned bus number 19
[    9.715528][    T1] usb usb19: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.716163][    T1] usb usb19: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.716732][    T1] usb usb19: Product: USB/IP Virtual Host Controller
[    9.717185][    T1] usb usb19: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.717752][    T1] usb usb19: SerialNumber: vhci_hcd.5
[    9.718784][    T1] hub 19-0:1.0: USB hub found
[    9.719159][    T1] hub 19-0:1.0: 8 ports detected
[    9.721244][    T1] vhci_hcd vhci_hcd.5: USB/IP Virtual Host Controller
[    9.721936][    T1] vhci_hcd vhci_hcd.5: new USB bus registered, assigned bus number 20
[    9.722604][    T1] usb usb20: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.723386][    T1] usb usb20: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.724039][    T1] usb usb20: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.724598][    T1] usb usb20: Product: USB/IP Virtual Host Controller
[    9.725057][    T1] usb usb20: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.725624][    T1] usb usb20: SerialNumber: vhci_hcd.5
[    9.726665][    T1] hub 20-0:1.0: USB hub found
[    9.727041][    T1] hub 20-0:1.0: 8 ports detected
[    9.729537][    T1] vhci_hcd vhci_hcd.6: USB/IP Virtual Host Controller
[    9.730230][    T1] vhci_hcd vhci_hcd.6: new USB bus registered, assigned bus number 21
[    9.731005][    T1] usb usb21: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.731639][    T1] usb usb21: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.732198][    T1] usb usb21: Product: USB/IP Virtual Host Controller
[    9.732656][    T1] usb usb21: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.733227][    T1] usb usb21: SerialNumber: vhci_hcd.6
[    9.734275][    T1] hub 21-0:1.0: USB hub found
[    9.734649][    T1] hub 21-0:1.0: 8 ports detected
[    9.736698][    T1] vhci_hcd vhci_hcd.6: USB/IP Virtual Host Controller
[    9.737393][    T1] vhci_hcd vhci_hcd.6: new USB bus registered, assigned bus number 22
[    9.738040][    T1] usb usb22: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.738836][    T1] usb usb22: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.739463][    T1] usb usb22: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.740021][    T1] usb usb22: Product: USB/IP Virtual Host Controller
[    9.740475][    T1] usb usb22: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.741049][    T1] usb usb22: SerialNumber: vhci_hcd.6
[    9.742072][    T1] hub 22-0:1.0: USB hub found
[    9.742441][    T1] hub 22-0:1.0: 8 ports detected
[    9.744990][    T1] vhci_hcd vhci_hcd.7: USB/IP Virtual Host Controller
[    9.745700][    T1] vhci_hcd vhci_hcd.7: new USB bus registered, assigned bus number 23
[    9.746455][    T1] usb usb23: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.747096][    T1] usb usb23: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.747650][    T1] usb usb23: Product: USB/IP Virtual Host Controller
[    9.748109][    T1] usb usb23: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.748676][    T1] usb usb23: SerialNumber: vhci_hcd.7
[    9.749701][    T1] hub 23-0:1.0: USB hub found
[    9.750073][    T1] hub 23-0:1.0: 8 ports detected
[    9.752118][    T1] vhci_hcd vhci_hcd.7: USB/IP Virtual Host Controller
[    9.752807][    T1] vhci_hcd vhci_hcd.7: new USB bus registered, assigned bus number 24
[    9.753456][    T1] usb usb24: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.754287][    T1] usb usb24: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.754927][    T1] usb usb24: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.755492][    T1] usb usb24: Product: USB/IP Virtual Host Controller
[    9.755960][    T1] usb usb24: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.756532][    T1] usb usb24: SerialNumber: vhci_hcd.7
[    9.757568][    T1] hub 24-0:1.0: USB hub found
[    9.757950][    T1] hub 24-0:1.0: 8 ports detected
[    9.760443][    T1] vhci_hcd vhci_hcd.8: USB/IP Virtual Host Controller
[    9.761149][    T1] vhci_hcd vhci_hcd.8: new USB bus registered, assigned bus number 25
[    9.761911][    T1] usb usb25: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.762549][    T1] usb usb25: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.763099][    T1] usb usb25: Product: USB/IP Virtual Host Controller
[    9.763553][    T1] usb usb25: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.764140][    T1] usb usb25: SerialNumber: vhci_hcd.8
[    9.765193][    T1] hub 25-0:1.0: USB hub found
[    9.765564][    T1] hub 25-0:1.0: 8 ports detected
[    9.767611][    T1] vhci_hcd vhci_hcd.8: USB/IP Virtual Host Controller
[    9.768307][    T1] vhci_hcd vhci_hcd.8: new USB bus registered, assigned bus number 26
[    9.768962][    T1] usb usb26: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.769735][    T1] usb usb26: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.770372][    T1] usb usb26: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.770931][    T1] usb usb26: Product: USB/IP Virtual Host Controller
[    9.771385][    T1] usb usb26: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.771952][    T1] usb usb26: SerialNumber: vhci_hcd.8
[    9.772985][    T1] hub 26-0:1.0: USB hub found
[    9.773361][    T1] hub 26-0:1.0: 8 ports detected
[    9.775866][    T1] vhci_hcd vhci_hcd.9: USB/IP Virtual Host Controller
[    9.776565][    T1] vhci_hcd vhci_hcd.9: new USB bus registered, assigned bus number 27
[    9.777344][    T1] usb usb27: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.777980][    T1] usb usb27: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.778541][    T1] usb usb27: Product: USB/IP Virtual Host Controller
[    9.778997][    T1] usb usb27: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.779567][    T1] usb usb27: SerialNumber: vhci_hcd.9
[    9.780734][    T1] hub 27-0:1.0: USB hub found
[    9.781107][    T1] hub 27-0:1.0: 8 ports detected
[    9.783149][    T1] vhci_hcd vhci_hcd.9: USB/IP Virtual Host Controller
[    9.783843][    T1] vhci_hcd vhci_hcd.9: new USB bus registered, assigned bus number 28
[    9.784533][    T1] usb usb28: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.785310][    T1] usb usb28: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.785946][    T1] usb usb28: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.786511][    T1] usb usb28: Product: USB/IP Virtual Host Controller
[    9.786968][    T1] usb usb28: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.787537][    T1] usb usb28: SerialNumber: vhci_hcd.9
[    9.788579][    T1] hub 28-0:1.0: USB hub found
[    9.788953][    T1] hub 28-0:1.0: 8 ports detected
[    9.791479][    T1] vhci_hcd vhci_hcd.10: USB/IP Virtual Host Controller
[    9.792194][    T1] vhci_hcd vhci_hcd.10: new USB bus registered, assigned bus number 29
[    9.792969][    T1] usb usb29: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.793611][    T1] usb usb29: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.794191][    T1] usb usb29: Product: USB/IP Virtual Host Controller
[    9.794653][    T1] usb usb29: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.795221][    T1] usb usb29: SerialNumber: vhci_hcd.10
[    9.796256][    T1] hub 29-0:1.0: USB hub found
[    9.796625][    T1] hub 29-0:1.0: 8 ports detected
[    9.798675][    T1] vhci_hcd vhci_hcd.10: USB/IP Virtual Host Controller
[    9.799421][    T1] vhci_hcd vhci_hcd.10: new USB bus registered, assigned bus number 30
[    9.800068][    T1] usb usb30: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.800864][    T1] usb usb30: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.801494][    T1] usb usb30: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.802053][    T1] usb usb30: Product: USB/IP Virtual Host Controller
[    9.802507][    T1] usb usb30: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.803065][    T1] usb usb30: SerialNumber: vhci_hcd.10
[    9.804122][    T1] hub 30-0:1.0: USB hub found
[    9.804507][    T1] hub 30-0:1.0: 8 ports detected
[    9.807006][    T1] vhci_hcd vhci_hcd.11: USB/IP Virtual Host Controller
[    9.807712][    T1] vhci_hcd vhci_hcd.11: new USB bus registered, assigned bus number 31
[    9.808485][    T1] usb usb31: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.809128][    T1] usb usb31: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.809687][    T1] usb usb31: Product: USB/IP Virtual Host Controller
[    9.810140][    T1] usb usb31: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.810705][    T1] usb usb31: SerialNumber: vhci_hcd.11
[    9.811742][    T1] hub 31-0:1.0: USB hub found
[    9.812112][    T1] hub 31-0:1.0: 8 ports detected
[    9.814198][    T1] vhci_hcd vhci_hcd.11: USB/IP Virtual Host Controller
[    9.814923][    T1] vhci_hcd vhci_hcd.11: new USB bus registered, assigned bus number 32
[    9.815577][    T1] usb usb32: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.816354][    T1] usb usb32: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.816984][    T1] usb usb32: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.817540][    T1] usb usb32: Product: USB/IP Virtual Host Controller
[    9.817998][    T1] usb usb32: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.818568][    T1] usb usb32: SerialNumber: vhci_hcd.11
[    9.819603][    T1] hub 32-0:1.0: USB hub found
[    9.819973][    T1] hub 32-0:1.0: 8 ports detected
[    9.822500][    T1] vhci_hcd vhci_hcd.12: USB/IP Virtual Host Controller
[    9.823201][    T1] vhci_hcd vhci_hcd.12: new USB bus registered, assigned bus number 33
[    9.823980][    T1] usb usb33: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.824641][    T1] usb usb33: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.825203][    T1] usb usb33: Product: USB/IP Virtual Host Controller
[    9.825655][    T1] usb usb33: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.826227][    T1] usb usb33: SerialNumber: vhci_hcd.12
[    9.827260][    T1] hub 33-0:1.0: USB hub found
[    9.827633][    T1] hub 33-0:1.0: 8 ports detected
[    9.829686][    T1] vhci_hcd vhci_hcd.12: USB/IP Virtual Host Controller
[    9.830392][    T1] vhci_hcd vhci_hcd.12: new USB bus registered, assigned bus number 34
[    9.831046][    T1] usb usb34: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.831828][    T1] usb usb34: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.832467][    T1] usb usb34: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.833037][    T1] usb usb34: Product: USB/IP Virtual Host Controller
[    9.833494][    T1] usb usb34: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.834085][    T1] usb usb34: SerialNumber: vhci_hcd.12
[    9.835140][    T1] hub 34-0:1.0: USB hub found
[    9.835512][    T1] hub 34-0:1.0: 8 ports detected
[    9.838002][    T1] vhci_hcd vhci_hcd.13: USB/IP Virtual Host Controller
[    9.838700][    T1] vhci_hcd vhci_hcd.13: new USB bus registered, assigned bus number 35
[    9.839469][    T1] usb usb35: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.840106][    T1] usb usb35: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.840671][    T1] usb usb35: Product: USB/IP Virtual Host Controller
[    9.841131][    T1] usb usb35: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.841703][    T1] usb usb35: SerialNumber: vhci_hcd.13
[    9.842759][    T1] hub 35-0:1.0: USB hub found
[    9.843132][    T1] hub 35-0:1.0: 8 ports detected
[    9.845206][    T1] vhci_hcd vhci_hcd.13: USB/IP Virtual Host Controller
[    9.845902][    T1] vhci_hcd vhci_hcd.13: new USB bus registered, assigned bus number 36
[    9.846560][    T1] usb usb36: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.847333][    T1] usb usb36: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.847967][    T1] usb usb36: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.848525][    T1] usb usb36: Product: USB/IP Virtual Host Controller
[    9.848987][    T1] usb usb36: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.849553][    T1] usb usb36: SerialNumber: vhci_hcd.13
[    9.850581][    T1] hub 36-0:1.0: USB hub found
[    9.850951][    T1] hub 36-0:1.0: 8 ports detected
[    9.853468][    T1] vhci_hcd vhci_hcd.14: USB/IP Virtual Host Controller
[    9.854177][    T1] vhci_hcd vhci_hcd.14: new USB bus registered, assigned bus number 37
[    9.854936][    T1] usb usb37: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.855576][    T1] usb usb37: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.856135][    T1] usb usb37: Product: USB/IP Virtual Host Controller
[    9.856595][    T1] usb usb37: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.857166][    T1] usb usb37: SerialNumber: vhci_hcd.14
[    9.858198][    T1] hub 37-0:1.0: USB hub found
[    9.858573][    T1] hub 37-0:1.0: 8 ports detected
[    9.860619][    T1] vhci_hcd vhci_hcd.14: USB/IP Virtual Host Controller
[    9.861312][    T1] vhci_hcd vhci_hcd.14: new USB bus registered, assigned bus number 38
[    9.861962][    T1] usb usb38: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.862754][    T1] usb usb38: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.863392][    T1] usb usb38: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.863948][    T1] usb usb38: Product: USB/IP Virtual Host Controller
[    9.864423][    T1] usb usb38: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.865001][    T1] usb usb38: SerialNumber: vhci_hcd.14
[    9.866069][    T1] hub 38-0:1.0: USB hub found
[    9.866441][    T1] hub 38-0:1.0: 8 ports detected
[    9.868935][    T1] vhci_hcd vhci_hcd.15: USB/IP Virtual Host Controller
[    9.869641][    T1] vhci_hcd vhci_hcd.15: new USB bus registered, assigned bus number 39
[    9.870420][    T1] usb usb39: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.04
[    9.871061][    T1] usb usb39: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.871615][    T1] usb usb39: Product: USB/IP Virtual Host Controller
[    9.872067][    T1] usb usb39: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.872638][    T1] usb usb39: SerialNumber: vhci_hcd.15
[    9.873682][    T1] hub 39-0:1.0: USB hub found
[    9.874081][    T1] hub 39-0:1.0: 8 ports detected
[    9.876154][    T1] vhci_hcd vhci_hcd.15: USB/IP Virtual Host Controller
[    9.876842][    T1] vhci_hcd vhci_hcd.15: new USB bus registered, assigned bus number 40
[    9.877489][    T1] usb usb40: We don't know the algorithms for LPM for this host, disabling LPM.
[    9.878268][    T1] usb usb40: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.04
[    9.878904][    T1] usb usb40: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    9.879460][    T1] usb usb40: Product: USB/IP Virtual Host Controller
[    9.879918][    T1] usb usb40: Manufacturer: Linux 6.4.0-rc6-00195-g40f71e7cd3c6 vhci_hcd
[    9.880482][    T1] usb usb40: SerialNumber: vhci_hcd.15
[    9.881518][    T1] hub 40-0:1.0: USB hub found
[    9.881894][    T1] hub 40-0:1.0: 8 ports detected
[    9.884427][    T1] usbcore: registered new device driver usbip-host
[    9.885709][    T1] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[    9.887028][    T1] serio: i8042 KBD port at 0x60,0x64 irq 1
[    9.887862][    T1] serio: i8042 AUX port at 0x60,0x64 irq 12
[    9.889023][    T1] mousedev: PS/2 mouse device common for all mice
[    9.890496][   T24] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1
[    9.890847][    T1] usbcore: registered new interface driver appletouch
[    9.891876][    T1] usbcore: registered new interface driver bcm5974
[    9.893363][    T1] usbcore: registered new interface driver synaptics_usb
[    9.894744][    T1] usbcore: registered new interface driver iforce
[    9.895569][    T1] usbcore: registered new interface driver xpad
[    9.896184][    T1] usbcore: registered new interface driver usb_acecad
[    9.896857][    T1] usbcore: registered new interface driver aiptek
[    9.897494][    T1] usbcore: registered new interface driver hanwang
[    9.898125][    T1] usbcore: registered new interface driver kbtab
[    9.898751][    T1] usbcore: registered new interface driver pegasus_notetaker
[    9.899498][    T1] usbcore: registered new interface driver usbtouchscreen
[    9.900191][    T1] usbcore: registered new interface driver sur40
[    9.900818][    T1] usbcore: registered new interface driver ati_remote2
[    9.901395][    T1] cm109: Keymap for Komunikate KIP1000 phone loaded
[    9.902035][    T1] usbcore: registered new interface driver cm109
[    9.902569][    T1] cm109: CM109 phone driver: 20080805 (C) Alfred E. Heggestad
[    9.903274][    T1] usbcore: registered new interface driver ims_pcu
[    9.903915][    T1] usbcore: registered new interface driver keyspan_remote
[    9.904625][    T1] usbcore: registered new interface driver powermate
[    9.905468][    T1] usbcore: registered new interface driver yealink
[    9.906709][    T1] rtc_cmos 00:05: RTC can wake from S4
[    9.908842][    T1] rtc_cmos 00:05: registered as rtc0
[    9.909326][    T1] rtc_cmos 00:05: alarms up to one day, y3k, 242 bytes nvram, hpet irqs
[    9.910591][    T1] i2c_dev: i2c /dev entries driver
[    9.911255][    T1] usbcore: registered new interface driver i2c-diolan-u2c
[    9.912005][    T1] usbcore: registered new interface driver RobotFuzz Open Source InterFace, OSIF
[    9.912880][    T1] usbcore: registered new interface driver i2c-tiny-usb
[    9.915003][    T1] usbcore: registered new interface driver igorplugusb
[    9.915806][    T1] usbcore: registered new interface driver iguanair
[    9.916663][    T1] usbcore: registered new interface driver imon
[    9.917349][    T1] usbcore: registered new interface driver mceusb
[    9.917980][    T1] usbcore: registered new interface driver redrat3
[    9.918605][    T1] usbcore: registered new interface driver streamzap
[    9.919264][    T1] usbcore: registered new interface driver ttusbir
[    9.919905][    T1] usbcore: registered new interface driver ati_remote
[    9.920655][    T1] b2c2-flexcop: B2C2 FlexcopII/II(b)/III digital TV receiver chip loaded successfully
[    9.921596][    T1] usbcore: registered new interface driver b2c2_flexcop_usb
[    9.922180][    T1] usbcore: registered new interface driver dvb_usb_vp7045
[    9.922743][    T1] usbcore: registered new interface driver dvb_usb_vp702x
[    9.923349][    T1] usbcore: registered new interface driver dvb_usb_gp8psk
[    9.923940][    T1] usbcore: registered new interface driver dvb_usb_dtt200u
[    9.924553][    T1] usbcore: registered new interface driver dvb_usb_a800
[    9.925146][    T1] usbcore: registered new interface driver dvb_usb_dibusb_mb
[    9.925737][    T1] usbcore: registered new interface driver dvb_usb_dibusb_mc
[    9.926327][    T1] usbcore: registered new interface driver dvb_usb_nova_t_usb2
[    9.926929][    T1] usbcore: registered new interface driver dvb_usb_umt_010
[    9.927507][    T1] usbcore: registered new interface driver dvb_usb_m920x
[    9.928066][    T1] usbcore: registered new interface driver dvb_usb_digitv
[    9.928651][    T1] usbcore: registered new interface driver dvb_usb_cxusb
[    9.929211][    T1] usbcore: registered new interface driver dvb_usb_ttusb2
[    9.929843][    T1] usbcore: registered new interface driver dvb_usb_dib0700
[    9.930412][    T1] usbcore: registered new interface driver opera1
[    9.930944][    T1] usbcore: registered new interface driver dvb_usb_af9005
[    9.931515][    T1] usbcore: registered new interface driver pctv452e
[    9.932070][    T1] usbcore: registered new interface driver dw2102
[    9.932587][    T1] usbcore: registered new interface driver dvb_usb_dtv5100
[    9.933165][    T1] usbcore: registered new interface driver cinergyT2
[    9.933711][    T1] usbcore: registered new interface driver dvb_usb_az6027
[    9.934316][    T1] usbcore: registered new interface driver dvb_usb_technisat_usb2
[    9.934965][    T1] usbcore: registered new interface driver dvb_usb_af9015
[    9.935558][    T1] usbcore: registered new interface driver dvb_usb_af9035
[    9.936115][    T1] usbcore: registered new interface driver dvb_usb_anysee
[    9.936670][    T1] usbcore: registered new interface driver dvb_usb_au6610
[    9.937236][    T1] usbcore: registered new interface driver dvb_usb_az6007
[    9.937796][    T1] usbcore: registered new interface driver dvb_usb_ce6230
[    9.938358][    T1] usbcore: registered new interface driver dvb_usb_ec168
[    9.938926][    T1] usbcore: registered new interface driver dvb_usb_lmedm04
[    9.939492][    T1] usbcore: registered new interface driver dvb_usb_gl861
[    9.940078][    T1] usbcore: registered new interface driver dvb_usb_mxl111sf
[    9.940685][    T1] usbcore: registered new interface driver dvb_usb_rtl28xxu
[    9.941273][    T1] usbcore: registered new interface driver dvb_usb_dvbsky
[    9.941835][    T1] usbcore: registered new interface driver zd1301
[    9.942368][    T1] usbcore: registered new interface driver s2255
[    9.942923][    T1] usbcore: registered new interface driver smsusb
[    9.943451][    T1] usbcore: registered new interface driver ttusb
[    9.943965][    T1] usbcore: registered new interface driver ttusb-dec
[    9.944533][    T1] usbcore: registered new interface driver Abilis Systems as10x usb driver
[    9.945217][    T1] usbcore: registered new interface driver airspy
[    9.945667][    T1] gspca_main: v2.14.0 registered
[    9.946073][    T1] usbcore: registered new interface driver benq
[    9.946601][    T1] usbcore: registered new interface driver conex
[    9.947117][    T1] usbcore: registered new interface driver cpia1
[    9.947632][    T1] usbcore: registered new interface driver dtcs033
[    9.948162][    T1] usbcore: registered new interface driver etoms
[    9.948698][    T1] usbcore: registered new interface driver finepix
[    9.949225][    T1] usbcore: registered new interface driver jeilinj
[    9.949754][    T1] usbcore: registered new interface driver jl2005bcd
[    9.950290][    T1] usbcore: registered new interface driver kinect
[    9.950806][    T1] usbcore: registered new interface driver konica
[    9.951327][    T1] usbcore: registered new interface driver mars
[    9.951835][    T1] usbcore: registered new interface driver mr97310a
[    9.952374][    T1] usbcore: registered new interface driver nw80x
[    9.952912][    T1] usbcore: registered new interface driver ov519
[    9.953444][    T1] usbcore: registered new interface driver ov534
[    9.953961][    T1] usbcore: registered new interface driver ov534_9
[    9.954676][    T1] usbcore: registered new interface driver pac207
[    9.955209][    T1] usbcore: registered new interface driver gspca_pac7302
[    9.955776][    T1] usbcore: registered new interface driver pac7311
[    9.956307][    T1] usbcore: registered new interface driver se401
[    9.956833][    T1] usbcore: registered new interface driver sn9c2028
[    9.957392][    T1] usbcore: registered new interface driver gspca_sn9c20x
[    9.957977][    T1] usbcore: registered new interface driver sonixb
[    9.958525][    T1] usbcore: registered new interface driver sonixj
[    9.959057][    T1] usbcore: registered new interface driver spca500
[    9.959586][    T1] usbcore: registered new interface driver spca501
[    9.960122][    T1] usbcore: registered new interface driver spca505
[    9.960643][    T1] usbcore: registered new interface driver spca506
[    9.961177][    T1] usbcore: registered new interface driver spca508
[    9.961709][    T1] usbcore: registered new interface driver spca561
[    9.962241][    T1] usbcore: registered new interface driver spca1528
[    9.962767][    T1] usbcore: registered new interface driver sq905
[    9.963283][    T1] usbcore: registered new interface driver sq905c
[    9.963800][    T1] usbcore: registered new interface driver sq930x
[    9.964386][    T1] usbcore: registered new interface driver sunplus
[    9.964914][    T1] usbcore: registered new interface driver stk014
[    9.965435][    T1] usbcore: registered new interface driver stk1135
[    9.965960][    T1] usbcore: registered new interface driver stv0680
[    9.966494][    T1] usbcore: registered new interface driver t613
[    9.967003][    T1] usbcore: registered new interface driver gspca_topro
[    9.967552][    T1] usbcore: registered new interface driver touptek
[    9.968078][    T1] usbcore: registered new interface driver tv8532
[    9.968617][    T1] usbcore: registered new interface driver vc032x
[    9.969146][    T1] usbcore: registered new interface driver vicam
[    9.969654][    T1] usbcore: registered new interface driver xirlink-cit
[    9.970243][    T1] usbcore: registered new interface driver gspca_zc3xx
[    9.970802][    T1] usbcore: registered new interface driver ALi m5602
[    9.971340][    T1] usbcore: registered new interface driver STV06xx
[    9.971874][    T1] usbcore: registered new interface driver gspca_gl860
[    9.972438][    T1] usbcore: registered new interface driver hackrf
[    9.972966][    T1] usbcore: registered new interface driver msi2500
[    9.973515][    T1] usbcore: registered new interface driver Philips webcam
[    9.974210][    T1] usbcore: registered new interface driver uvcvideo
[    9.974684][    T1] au0828: au0828 driver loaded
[    9.975104][    T1] usbcore: registered new interface driver au0828
[    9.975666][    T1] usbcore: registered new interface driver cx231xx
[    9.976294][    T1] usbcore: registered new interface driver em28xx
[    9.976757][    T1] em28xx: Registered (Em28xx v4l2 Extension) extension
[    9.977230][    T1] em28xx: Registered (Em28xx Audio Extension) extension
[    9.977706][    T1] em28xx: Registered (Em28xx dvb Extension) extension
[    9.978175][    T1] em28xx: Registered (Em28xx Input Extension) extension
[    9.978736][    T1] usbcore: registered new interface driver go7007
[    9.979279][    T1] usbcore: registered new interface driver go7007-loader
[    9.979907][    T1] usbcore: registered new interface driver hdpvr
[    9.980641][    T1] usbcore: registered new interface driver pvrusb2
[    9.981111][    T1] pvrusb2: V4L in-tree version:Hauppauge WinTV-PVR-USB2 MPEG2 Encoder/Tuner
[    9.981718][    T1] pvrusb2: Debug mask is 31 (0x1f)
[    9.982154][    T1] usbcore: registered new interface driver stk1160
[    9.982685][    T1] usbcore: registered new interface driver usbtv
[    9.983919][    T1] dvbdev: DVB: registering new adapter (dvb_vidtv_bridge)
[    9.985555][    T1] i2c i2c-0: DVB: registering adapter 0 frontend 0 (Dummy demod for DVB-T/T2/C/S/S2)...
[    9.986384][    T1] dvbdev: dvb_create_media_entity: media entity 'Dummy demod for DVB-T/T2/C/S/S2' registered.
[    9.989927][    T1] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered.
[    9.992280][    T1] vidtv vidtv.0: Successfully initialized vidtv!
[    9.993194][    T1] vicodec vicodec.0: Device 'stateful-encoder' registered as /dev/video0
[    9.993989][    T1] vicodec vicodec.0: Device 'stateful-decoder' registered as /dev/video1
[    9.995100][    T1] vicodec vicodec.0: Device 'stateless-decoder' registered as /dev/video2
[    9.997269][    T1] vim2m vim2m.0: Device registered as /dev/video0
[   10.009688][    T1] vivid-000: using single planar format API
[   10.019338][    T1] vivid-000: CEC adapter cec0 registered for HDMI input 0
[   10.020540][    T1] vivid-000: V4L2 capture device registered as video7
[   10.021306][    T1] vivid-000: CEC adapter cec1 registered for HDMI output 0
[   10.022350][    T1] vivid-000: V4L2 output device registered as video8
[   10.023322][    T1] vivid-000: V4L2 capture device registered as vbi0, supports raw and sliced VBI
[   10.024618][    T1] vivid-000: V4L2 output device registered as vbi1, supports raw and sliced VBI
[   10.026088][    T1] vivid-000: V4L2 capture device registered as swradio0
[   10.027296][    T1] vivid-000: V4L2 receiver device registered as radio0
[   10.028496][    T1] vivid-000: V4L2 transmitter device registered as radio1
[   10.029533][    T1] vivid-000: V4L2 metadata capture device registered as video9
[   10.030823][    T1] vivid-000: V4L2 metadata output device registered as video10
[   10.032126][    T1] vivid-000: V4L2 touch capture device registered as v4l-touch0
[   10.033434][    T1] vivid-001: using multiplanar format API
[   10.042284][    T1] vivid-001: CEC adapter cec2 registered for HDMI input 0
[   10.043084][    T1] vivid-001: V4L2 capture device registered as video11
[   10.043720][    T1] vivid-001: CEC adapter cec3 registered for HDMI output 0
[   10.044601][    T1] vivid-001: V4L2 output device registered as video12
[   10.045382][    T1] vivid-001: V4L2 capture device registered as vbi2, supports raw and sliced VBI
[   10.046172][    T1] vivid-001: V4L2 output device registered as vbi3, supports raw and sliced VBI
[   10.046950][    T1] vivid-001: V4L2 capture device registered as swradio1
[   10.047609][    T1] vivid-001: V4L2 receiver device registered as radio2
[   10.048230][    T1] vivid-001: V4L2 transmitter device registered as radio3
[   10.048897][    T1] vivid-001: V4L2 metadata capture device registered as video13
[   10.049582][    T1] vivid-001: V4L2 metadata output device registered as video14
[   10.050291][    T1] vivid-001: V4L2 touch capture device registered as v4l-touch1
[   10.050972][    T1] vivid-002: using single planar format API
[   10.056717][    T1] vivid-002: CEC adapter cec4 registered for HDMI input 0
[   10.057393][    T1] vivid-002: V4L2 capture device registered as video15
[   10.058030][    T1] vivid-002: CEC adapter cec5 registered for HDMI output 0
[   10.058872][    T1] vivid-002: V4L2 output device registered as video16
[   10.059643][    T1] vivid-002: V4L2 capture device registered as vbi4, supports raw and sliced VBI
[   10.060578][    T1] vivid-002: V4L2 output device registered as vbi5, supports raw and sliced VBI
[   10.061521][    T1] vivid-002: V4L2 capture device registered as swradio2
[   10.062326][    T1] vivid-002: V4L2 receiver device registered as radio4
[   10.063103][    T1] vivid-002: V4L2 transmitter device registered as radio5
[   10.063902][    T1] vivid-002: V4L2 metadata capture device registered as video17
[   10.064974][    T1] vivid-002: V4L2 metadata output device registered as video18
[   10.065863][    T1] vivid-002: V4L2 touch capture device registered as v4l-touch2
[   10.066710][    T1] vivid-003: using multiplanar format API
[   10.072517][    T1] vivid-003: CEC adapter cec6 registered for HDMI input 0
[   10.073370][    T1] vivid-003: V4L2 capture device registered as video19
[   10.074204][    T1] vivid-003: CEC adapter cec7 registered for HDMI output 0
[   10.075027][    T1] vivid-003: V4L2 output device registered as video20
[   10.075658][    T1] vivid-003: V4L2 capture device registered as vbi6, supports raw and sliced VBI
[   10.076448][    T1] vivid-003: V4L2 output device registered as vbi7, supports raw and sliced VBI
[   10.077376][    T1] vivid-003: V4L2 capture device registered as swradio3
[   10.078165][    T1] vivid-003: V4L2 receiver device registered as radio6
[   10.078963][    T1] vivid-003: V4L2 transmitter device registered as radio7
[   10.079759][    T1] vivid-003: V4L2 metadata capture device registered as video21
[   10.080609][    T1] vivid-003: V4L2 metadata output device registered as video22
[   10.081467][    T1] vivid-003: V4L2 touch capture device registered as v4l-touch3
[   10.082302][    T1] vivid-004: using single planar format API
[   10.088274][    T1] vivid-004: CEC adapter cec8 registered for HDMI input 0
[   10.088963][    T1] vivid-004: V4L2 capture device registered as video23
[   10.089620][    T1] vivid-004: CEC adapter cec9 registered for HDMI output 0
[   10.090298][    T1] vivid-004: V4L2 output device registered as video24
[   10.090945][    T1] vivid-004: V4L2 capture device registered as vbi8, supports raw and sliced VBI
[   10.091735][    T1] vivid-004: V4L2 output device registered as vbi9, supports raw and sliced VBI
[   10.092514][    T1] vivid-004: V4L2 capture device registered as swradio4
[   10.093160][    T1] vivid-004: V4L2 receiver device registered as radio8
[   10.093823][    T1] vivid-004: V4L2 transmitter device registered as radio9
[   10.094524][    T1] vivid-004: V4L2 metadata capture device registered as video25
[   10.095203][    T1] vivid-004: V4L2 metadata output device registered as video26
[   10.095902][    T1] vivid-004: V4L2 touch capture device registered as v4l-touch4
[   10.096571][    T1] vivid-005: using multiplanar format API
[   10.102244][    T1] vivid-005: CEC adapter cec10 registered for HDMI input 0
[   10.102913][    T1] vivid-005: V4L2 capture device registered as video27
[   10.103708][    T1] vivid-005: CEC adapter cec11 registered for HDMI output 0
[   10.104544][    T1] vivid-005: V4L2 output device registered as video28
[   10.105324][    T1] vivid-005: V4L2 capture device registered as vbi10, supports raw and sliced VBI
[   10.106244][    T1] vivid-005: V4L2 output device registered as vbi11, supports raw and sliced VBI
[   10.107060][    T1] vivid-005: V4L2 capture device registered as swradio5
[   10.107702][    T1] vivid-005: V4L2 receiver device registered as radio10
[   10.108338][    T1] vivid-005: V4L2 transmitter device registered as radio11
[   10.109013][    T1] vivid-005: V4L2 metadata capture device registered as video29
[   10.109716][    T1] vivid-005: V4L2 metadata output device registered as video30
[   10.110414][    T1] vivid-005: V4L2 touch capture device registered as v4l-touch5
[   10.111226][    T1] vivid-006: using single planar format API
[   10.117046][    T1] vivid-006: CEC adapter cec12 registered for HDMI input 0
[   10.117727][    T1] vivid-006: V4L2 capture device registered as video31
[   10.118552][    T1] vivid-006: CEC adapter cec13 registered for HDMI output 0
[   10.119253][    T1] vivid-006: V4L2 output device registered as video32
[   10.119882][    T1] vivid-006: V4L2 capture device registered as vbi12, supports raw and sliced VBI
[   10.120675][    T1] vivid-006: V4L2 output device registered as vbi13, supports raw and sliced VBI
[   10.121459][    T1] vivid-006: V4L2 capture device registered as swradio6
[   10.122102][    T1] vivid-006: V4L2 receiver device registered as radio12
[   10.122739][    T1] vivid-006: V4L2 transmitter device registered as radio13
[   10.123400][    T1] vivid-006: V4L2 metadata capture device registered as video33
[   10.124115][    T1] vivid-006: V4L2 metadata output device registered as video34
[   10.124820][    T1] vivid-006: V4L2 touch capture device registered as v4l-touch6
[   10.125515][    T1] vivid-007: using multiplanar format API
[   10.131321][    T1] vivid-007: CEC adapter cec14 registered for HDMI input 0
[   10.131997][    T1] vivid-007: V4L2 capture device registered as video35
[   10.132639][    T1] vivid-007: CEC adapter cec15 registered for HDMI output 0
[   10.133322][    T1] vivid-007: V4L2 output device registered as video36
[   10.133969][    T1] vivid-007: V4L2 capture device registered as vbi14, supports raw and sliced VBI
[   10.134974][    T1] vivid-007: V4L2 output device registered as vbi15, supports raw and sliced VBI
[   10.135767][    T1] vivid-007: V4L2 capture device registered as swradio7
[   10.136417][    T1] vivid-007: V4L2 receiver device registered as radio14
[   10.137069][    T1] vivid-007: V4L2 transmitter device registered as radio15
[   10.137747][    T1] vivid-007: V4L2 metadata capture device registered as video37
[   10.138452][    T1] vivid-007: V4L2 metadata output device registered as video38
[   10.139156][    T1] vivid-007: V4L2 touch capture device registered as v4l-touch7
[   10.139845][    T1] vivid-008: using single planar format API
[   10.145577][    T1] vivid-008: CEC adapter cec16 registered for HDMI input 0
[   10.146274][    T1] vivid-008: V4L2 capture device registered as video39
[   10.146947][    T1] vivid-008: CEC adapter cec17 registered for HDMI output 0
[   10.147802][    T1] vivid-008: V4L2 output device registered as video40
[   10.148613][    T1] vivid-008: V4L2 capture device registered as vbi16, supports raw and sliced VBI
[   10.149622][    T1] vivid-008: V4L2 output device registered as vbi17, supports raw and sliced VBI
[   10.150601][    T1] vivid-008: V4L2 capture device registered as swradio8
[   10.151411][    T1] vivid-008: V4L2 receiver device registered as radio16
[   10.152226][    T1] vivid-008: V4L2 transmitter device registered as radio17
[   10.153075][    T1] vivid-008: V4L2 metadata capture device registered as video41
[   10.153948][    T1] vivid-008: V4L2 metadata output device registered as video42
[   10.155025][    T1] vivid-008: V4L2 touch capture device registered as v4l-touch8
[   10.155893][    T1] vivid-009: using multiplanar format API
[   10.161733][    T1] vivid-009: CEC adapter cec18 registered for HDMI input 0
[   10.162419][    T1] vivid-009: V4L2 capture device registered as video43
[   10.163104][    T1] vivid-009: CEC adapter cec19 registered for HDMI output 0
[   10.163842][    T1] vivid-009: V4L2 output device registered as video44
[   10.164536][    T1] vivid-009: V4L2 capture device registered as vbi18, supports raw and sliced VBI
[   10.165445][    T1] vivid-009: V4L2 output device registered as vbi19, supports raw and sliced VBI
[   10.166290][    T1] vivid-009: V4L2 capture device registered as swradio9
[   10.166978][    T1] vivid-009: V4L2 receiver device registered as radio18
[   10.167650][    T1] vivid-009: V4L2 transmitter device registered as radio19
[   10.168363][    T1] vivid-009: V4L2 metadata capture device registered as video45
[   10.169088][    T1] vivid-009: V4L2 metadata output device registered as video46
[   10.169821][    T1] vivid-009: V4L2 touch capture device registered as v4l-touch9
[   10.170545][    T1] vivid-010: using single planar format API
[   10.176338][    T1] vivid-010: CEC adapter cec20 registered for HDMI input 0
[   10.177204][    T1] vivid-010: V4L2 capture device registered as video47
[   10.177899][    T1] vivid-010: CEC adapter cec21 registered for HDMI output 0
[   10.178635][    T1] vivid-010: V4L2 output device registered as video48
[   10.179455][    T1] vivid-010: V4L2 capture device registered as vbi20, supports raw and sliced VBI
[   10.180419][    T1] vivid-010: V4L2 output device registered as vbi21, supports raw and sliced VBI
[   10.181400][    T1] vivid-010: V4L2 capture device registered as swradio10
[   10.182253][    T1] vivid-010: V4L2 receiver device registered as radio20
[   10.183073][    T1] vivid-010: V4L2 transmitter device registered as radio21
[   10.183922][    T1] vivid-010: V4L2 metadata capture device registered as video49
[   10.185056][    T1] vivid-010: V4L2 metadata output device registered as video50
[   10.186133][    T1] vivid-010: V4L2 touch capture device registered as v4l-touch10
[   10.186891][    T1] vivid-011: using multiplanar format API
[   10.192763][    T1] vivid-011: CEC adapter cec22 registered for HDMI input 0
[   10.193608][    T1] vivid-011: V4L2 capture device registered as video51
[   10.194455][    T1] vivid-011: CEC adapter cec23 registered for HDMI output 0
[   10.195293][    T1] vivid-011: V4L2 output device registered as video52
[   10.196122][    T1] vivid-011: V4L2 capture device registered as vbi22, supports raw and sliced VBI
[   10.197139][    T1] vivid-011: V4L2 output device registered as vbi23, supports raw and sliced VBI
[   10.198132][    T1] vivid-011: V4L2 capture device registered as swradio11
[   10.198962][    T1] vivid-011: V4L2 receiver device registered as radio22
[   10.199813][    T1] vivid-011: V4L2 transmitter device registered as radio23
[   10.200673][    T1] vivid-011: V4L2 metadata capture device registered as video53
[   10.201565][    T1] vivid-011: V4L2 metadata output device registered as video54
[   10.202505][    T1] vivid-011: V4L2 touch capture device registered as v4l-touch11
[   10.203392][    T1] vivid-012: using single planar format API
[   10.209317][    T1] vivid-012: CEC adapter cec24 registered for HDMI input 0
[   10.210049][    T1] vivid-012: V4L2 capture device registered as video55
[   10.210918][    T1] vivid-012: CEC adapter cec25 registered for HDMI output 0
[   10.211667][    T1] vivid-012: V4L2 output device registered as video56
[   10.212382][    T1] vivid-012: V4L2 capture device registered as vbi24, supports raw and sliced VBI
[   10.213252][    T1] vivid-012: V4L2 output device registered as vbi25, supports raw and sliced VBI
[   10.214160][    T1] vivid-012: V4L2 capture device registered as swradio12
[   10.215218][    T1] vivid-012: V4L2 receiver device registered as radio24
[   10.215909][    T1] vivid-012: V4L2 transmitter device registered as radio25
[   10.216652][    T1] vivid-012: V4L2 metadata capture device registered as video57
[   10.217559][    T1] vivid-012: V4L2 metadata output device registered as video58
[   10.218319][    T1] vivid-012: V4L2 touch capture device registered as v4l-touch12
[   10.219186][    T1] vivid-013: using multiplanar format API
[   10.224988][    T1] vivid-013: CEC adapter cec26 registered for HDMI input 0
[   10.225855][    T1] vivid-013: V4L2 capture device registered as video59
[   10.226552][    T1] vivid-013: CEC adapter cec27 registered for HDMI output 0
[   10.227306][    T1] vivid-013: V4L2 output device registered as video60
[   10.227990][    T1] vivid-013: V4L2 capture device registered as vbi26, supports raw and sliced VBI
[   10.228859][    T1] vivid-013: V4L2 output device registered as vbi27, supports raw and sliced VBI
[   10.229713][    T1] vivid-013: V4L2 capture device registered as swradio13
[   10.230435][    T1] vivid-013: V4L2 receiver device registered as radio26
[   10.231128][    T1] vivid-013: V4L2 transmitter device registered as radio27
[   10.231836][    T1] vivid-013: V4L2 metadata capture device registered as video61
[   10.232588][    T1] vivid-013: V4L2 metadata output device registered as video62
[   10.233356][    T1] vivid-013: V4L2 touch capture device registered as v4l-touch13
[   10.234150][    T1] vivid-014: using single planar format API
[   10.240056][    T1] vivid-014: CEC adapter cec28 registered for HDMI input 0
[   10.240799][    T1] vivid-014: V4L2 capture device registered as video63
[   10.241499][    T1] vivid-014: CEC adapter cec29 registered for HDMI output 0
[   10.242232][    T1] vivid-014: V4L2 output device registered as video64
[   10.242948][    T1] vivid-014: V4L2 capture device registered as vbi28, supports raw and sliced VBI
[   10.243814][    T1] vivid-014: V4L2 output device registered as vbi29, supports raw and sliced VBI
[   10.244721][    T1] vivid-014: V4L2 capture device registered as swradio14
[   10.245565][    T1] vivid-014: V4L2 receiver device registered as radio28
[   10.246266][    T1] vivid-014: V4L2 transmitter device registered as radio29
[   10.246975][    T1] vivid-014: V4L2 metadata capture device registered as video65
[   10.247717][    T1] vivid-014: V4L2 metadata output device registered as video66
[   10.248481][    T1] vivid-014: V4L2 touch capture device registered as v4l-touch14
[   10.249239][    T1] vivid-015: using multiplanar format API
[   10.255370][    T1] vivid-015: CEC adapter cec30 registered for HDMI input 0
[   10.256106][    T1] vivid-015: V4L2 capture device registered as video67
[   10.256833][    T1] vivid-015: CEC adapter cec31 registered for HDMI output 0
[   10.257570][    T1] vivid-015: V4L2 output device registered as video68
[   10.258251][    T1] vivid-015: V4L2 capture device registered as vbi30, supports raw and sliced VBI
[   10.259137][    T1] vivid-015: V4L2 output device registered as vbi31, supports raw and sliced VBI
[   10.259982][    T1] vivid-015: V4L2 capture device registered as swradio15
[   10.260706][    T1] vivid-015: V4L2 receiver device registered as radio30
[   10.261400][    T1] vivid-015: V4L2 transmitter device registered as radio31
[   10.262123][    T1] vivid-015: V4L2 metadata capture device registered as video69
[   10.262868][    T1] vivid-015: V4L2 metadata output device registered as video70
[   10.263615][    T1] vivid-015: V4L2 touch capture device registered as v4l-touch15
[   10.264679][    T1] usbcore: registered new interface driver radioshark2
[   10.265438][    T1] usbcore: registered new interface driver radioshark
[   10.266040][    T1] usbcore: registered new interface driver radio-si470x
[   10.266772][    T1] usbcore: registered new interface driver radio-usb-si4713
[   10.267423][    T1] usbcore: registered new interface driver dsbr100
[   10.268022][    T1] usbcore: registered new interface driver radio-keene
[   10.268638][    T1] usbcore: registered new interface driver radio-ma901
[   10.269267][    T1] usbcore: registered new interface driver radio-mr800
[   10.269890][    T1] usbcore: registered new interface driver radio-raremono
[   10.271028][    T1] usbcore: registered new interface driver pcwd_usb
[   10.272694][    T1] device-mapper: core: CONFIG_IMA_DISABLE_HTABLE is disabled. Duplicate IMA measurements will not be recorded in the IMA log.
[   10.273636][    T1] device-mapper: uevent: version 1.0.3
[   10.274550][    T1] device-mapper: ioctl: 4.48.0-ioctl (2023-03-01) initialised: dm-devel@redhat.com
[   10.276171][    T1] device-mapper: multipath round-robin: version 1.2.0 loaded
[   10.276709][    T1] device-mapper: multipath queue-length: version 0.2.0 loaded
[   10.277245][    T1] device-mapper: multipath service-time: version 0.3.0 loaded
[   10.278067][    T1] Bluetooth: HCI UART driver ver 2.3
[   10.278583][    T1] Bluetooth: HCI UART protocol H4 registered
[   10.279003][    T1] Bluetooth: HCI UART protocol BCSP registered
[   10.279472][    T1] Bluetooth: HCI UART protocol LL registered
[   10.279944][    T1] Bluetooth: HCI UART protocol Three-wire (H5) registered
[   10.280472][    T1] Bluetooth: HCI UART protocol QCA registered
[   10.280911][    T1] Bluetooth: HCI UART protocol AG6XX registered
[   10.281396][    T1] Bluetooth: HCI UART protocol Marvell registered
[   10.281927][    T1] usbcore: registered new interface driver bcm203x
[   10.282466][    T1] usbcore: registered new interface driver bpa10x
[   10.282980][    T1] usbcore: registered new interface driver bfusb
[   10.283524][    T1] usbcore: registered new interface driver btusb
[   10.284124][    T1] usbcore: registered new interface driver ath3k
[   10.284893][    T1] CAPI 2.0 started up with major 68 (middleware)
[   10.285349][    T1] Modular ISDN core version 1.1.29
[   10.285953][    T1] NET: Registered PF_ISDN protocol family
[   10.286365][    T1] DSP module 2.0
[   10.286616][    T1] mISDN_dsp: DSP clocks every 80 samples. This equals 1 jiffies.
[   10.292452][    T1] mISDN: Layer-1-over-IP driver Rev. 2.00
[   10.293210][    T1] 0 virtual devices registered
[   10.293646][    T1] usbcore: registered new interface driver HFC-S_USB
[   10.294156][    T1] VUB300 Driver rom wait states = 1C irqpoll timeout = 0400
[   10.294800][    T1] usbcore: registered new interface driver vub300
[   10.295837][    T1] usbcore: registered new interface driver ushc
[   10.298463][    T1] iscsi: registered transport (iser)
[   10.300398][    T1] SoftiWARP attached
[   10.307814][    T1] hid: raw HID events driver (C) Jiri Kosina
[   10.318014][    T1] usbcore: registered new interface driver usbhid
[   10.318728][    T1] usbhid: USB HID core driver
[   10.320360][    T1] usbcore: registered new interface driver es2_ap_driver
[   10.321162][    T1] comedi: version 0.7.76 - http://www.comedi.org
[   10.322030][    T1] usbcore: registered new interface driver dt9812
[   10.322715][    T1] usbcore: registered new interface driver ni6501
[   10.323253][    T1] usbcore: registered new interface driver usbdux
[   10.323790][    T1] usbcore: registered new interface driver usbduxfast
[   10.324386][    T1] usbcore: registered new interface driver usbduxsigma
[   10.324981][    T1] usbcore: registered new interface driver vmk80xx
[   10.325689][    T1] usbcore: registered new interface driver prism2_usb
[   10.326313][    T1] usbcore: registered new interface driver r8712u
[   10.326811][    T1] greybus: registered new driver hid
[   10.327272][    T1] greybus: registered new driver gbphy
[   10.327851][    T1] gb_gbphy: registered new driver usb
[   10.328401][    T1] asus_wmi: ASUS WMI generic driver loaded
[   10.351727][    T1] usbcore: registered new interface driver snd-usb-audio
[   10.352441][    T1] usbcore: registered new interface driver snd-ua101
[   10.353011][    T1] usbcore: registered new interface driver snd-usb-usx2y
[   10.353722][    T1] usbcore: registered new interface driver snd-usb-us122l
[   10.354536][    T1] usbcore: registered new interface driver snd-usb-caiaq
[   10.355152][    T1] usbcore: registered new interface driver snd-usb-6fire
[   10.355735][    T1] usbcore: registered new interface driver snd-usb-hiface
[   10.356304][    T1] usbcore: registered new interface driver snd-bcd2000
[   10.356868][    T1] usbcore: registered new interface driver snd_usb_pod
[   10.357613][    T1] usbcore: registered new interface driver snd_usb_podhd
[   10.358208][    T1] usbcore: registered new interface driver snd_usb_toneport
[   10.358778][    T1] usbcore: registered new interface driver snd_usb_variax
[   10.359376][    T1] drop_monitor: Initializing network drop monitor service
[   10.360007][    T1] NET: Registered PF_LLC protocol family
[   10.360451][    T1] GACT probability on
[   10.360780][    T1] Mirror/redirect action on
[   10.361156][    T1] Simple TC action Loaded
[   10.362349][    T1] netem: version 1.3
[   10.362952][    T1] u32 classifier
[   10.363206][    T1]     Performance counters on
[   10.363532][    T1]     input device check on
[   10.363830][    T1]     Actions configured
[   10.365697][    T1] nf_conntrack_irc: failed to register helpers
[   10.366130][    T1] nf_conntrack_sane: failed to register helpers
[   10.486219][    T1] nf_conntrack_sip: failed to register helpers
[   10.487965][    T1] xt_time: kernel timezone is -0000
[   10.488384][    T1] IPVS: Registered protocols (TCP, UDP, SCTP, AH, ESP)
[   10.488885][    T1] IPVS: Connection hash table configured (size=4096, memory=32Kbytes)
[   10.489652][    T1] IPVS: ipvs loaded.
[   10.489926][    T1] IPVS: [rr] scheduler registered.
[   10.490276][    T1] IPVS: [wrr] scheduler registered.
[   10.490638][    T1] IPVS: [lc] scheduler registered.
[   10.490987][    T1] IPVS: [wlc] scheduler registered.
[   10.491341][    T1] IPVS: [fo] scheduler registered.
[   10.491674][    T1] IPVS: [ovf] scheduler registered.
[   10.492028][    T1] IPVS: [lblc] scheduler registered.
[   10.492390][    T1] IPVS: [lblcr] scheduler registered.
[   10.492750][    T1] IPVS: [dh] scheduler registered.
[   10.493090][    T1] IPVS: [sh] scheduler registered.
[   10.493432][    T1] IPVS: [mh] scheduler registered.
[   10.493764][    T1] IPVS: [sed] scheduler registered.
[   10.494130][    T1] IPVS: [nq] scheduler registered.
[   10.494480][    T1] IPVS: [twos] scheduler registered.
[   10.494896][    T1] IPVS: [sip] pe registered.
[   10.495265][    T1] ipip: IPv4 and MPLS over IPv4 tunneling driver
[   10.496542][    T1] gre: GRE over IPv4 demultiplexor driver
[   10.496928][    T1] ip_gre: GRE over IPv4 tunneling driver
[   10.499704][    T1] IPv4 over IPsec tunneling driver
[   10.501212][    T1] Initializing XFRM netlink socket
[   10.501617][    T1] IPsec XFRM device driver
[   10.502074][    T1] NET: Registered PF_INET6 protocol family
[   10.507805][    T1] Segment Routing with IPv6
[   10.508123][    T1] RPL Segment Routing with IPv6
[   10.508486][    T1] In-situ OAM (IOAM) with IPv6
[   10.508890][    T1] mip6: Mobile IPv6
[   10.510190][    T1] sit: IPv6, IPv4 and MPLS over IPv4 tunneling driver
[   10.512511][    T1] ip6_gre: GRE over IPv6 tunneling driver
[   10.513782][    T1] NET: Registered PF_PACKET protocol family
[   10.514266][    T1] NET: Registered PF_KEY protocol family
[   10.514747][    T1] Bridge firewalling registered
[   10.515332][    T1] NET: Registered PF_X25 protocol family
[   10.515746][    T1] X25: Linux Version 0.2
[   10.526514][  T131] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3
[   10.527007][    T1] NET: Registered PF_NETROM protocol family
[   10.539347][    T1] NET: Registered PF_ROSE protocol family
[   10.539797][    T1] NET: Registered PF_AX25 protocol family
[   10.540205][    T1] can: controller area network core
[   10.540613][    T1] NET: Registered PF_CAN protocol family
[   10.541007][    T1] can: raw protocol
[   10.541281][    T1] can: broadcast manager protocol
[   10.541622][    T1] can: netlink gateway - max_hops=1
[   10.541988][    T1] can: SAE J1939
[   10.542240][    T1] can: isotp protocol (max_pdu_size 8300)
[   10.542841][    T1] Bluetooth: RFCOMM TTY layer initialized
[   10.543242][    T1] Bluetooth: RFCOMM socket layer initialized
[   10.543666][    T1] Bluetooth: RFCOMM ver 1.11
[   10.543987][    T1] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   10.544446][    T1] Bluetooth: BNEP filters: protocol multicast
[   10.544884][    T1] Bluetooth: BNEP socket layer initialized
[   10.545278][    T1] Bluetooth: CMTP (CAPI Emulation) ver 1.0
[   10.545685][    T1] Bluetooth: CMTP socket layer initialized
[   10.546077][    T1] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[   10.546539][    T1] Bluetooth: HIDP socket layer initialized
[   10.548688][    T1] NET: Registered PF_RXRPC protocol family
[   10.549086][    T1] Key type rxrpc registered
[   10.549386][    T1] Key type rxrpc_s registered
[   10.549932][    T1] NET: Registered PF_KCM protocol family
[   10.550549][    T1] lec:lane_module_init: lec.c: initialized
[   10.550945][    T1] mpoa:atm_mpoa_init: mpc.c: initialized
[   10.551377][    T1] l2tp_core: L2TP core driver, V2.0
[   10.551749][    T1] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[   10.552117][    T1] l2tp_ip: L2TP IP encapsulation support (L2TPv3)
[   10.552561][    T1] l2tp_netlink: L2TP netlink interface
[   10.552965][    T1] l2tp_eth: L2TP ethernet pseudowire support (L2TPv3)
[   10.553436][    T1] l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3)
[   10.553998][    T1] NET: Registered PF_PHONET protocol family
[   10.554490][    T1] 8021q: 802.1Q VLAN Support v1.8
[   10.560560][    T1] DCCP: Activated CCID 2 (TCP-like)
[   10.560945][    T1] DCCP: Activated CCID 3 (TCP-Friendly Rate Control)
[   10.561481][    T1] DCCP is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list
[   10.562337][    T1] sctp: Hash tables configured (bind 32/56)
[   10.563310][    T1] NET: Registered PF_RDS protocol family
[   10.563953][    T1] Registered RDS/infiniband transport
[   10.564719][    T1] Registered RDS/tcp transport
[   10.565044][    T1] tipc: Activated (version 2.0.0)
[   10.565576][    T1] NET: Registered PF_TIPC protocol family
[   10.566230][    T1] tipc: Started in single node mode
[   10.566853][    T1] NET: Registered PF_SMC protocol family
[   10.567383][    T1] 9pnet: Installing 9P2000 support
[   10.567918][    T1] NET: Registered PF_CAIF protocol family
[   10.571454][    T1] NET: Registered PF_IEEE802154 protocol family
[   10.571955][    T1] Key type dns_resolver registered
[   10.572308][    T1] Key type ceph registered
[   10.572808][    T1] libceph: loaded (mon/osd proto 15/24)
[   10.573556][    T1] batman_adv: B.A.T.M.A.N. advanced 2023.1 (compatibility version 15) loaded
[   10.574366][    T1] openvswitch: Open vSwitch switching datapath
[   10.576268][    T1] NET: Registered PF_VSOCK protocol family
[   10.576805][    T1] mpls_gso: MPLS GSO support
[   10.578616][    T1] start plist test
[   10.581415][    T1] end plist test
[   10.586190][    T1] IPI shorthand broadcast: enabled
[   10.586585][    T1] AVX2 version of gcm_enc/dec engaged.
[   10.587125][    T1] AES CTR mode by8 optimization enabled
[   10.600860][ T2883] kworker/u17:1 (2883) used greatest stack depth: 26824 bytes left
[   10.711074][    T1] sched_clock: Marking stable (10700004466, 4015295)->(10629140344, 74879417)
[   10.712208][    T1] registered taskstats version 1
[   10.715463][    T1] Loading compiled-in X.509 certificates
[   10.718211][    T1] Loaded X.509 cert 'Build time autogenerated kernel key: 70362406141ebc4a7eb396b230e5abda92294c78'
[   10.721274][    T1] zswap: loaded using pool lzo/zbud
[   10.779096][    T1] debug_vm_pgtable: [debug_vm_pgtable         ]: Validating architecture page table helpers
[   11.381105][    T1] Key type .fscrypt registered
[   11.381459][    T1] Key type fscrypt-provisioning registered
[   11.383783][    T1] kAFS: Red Hat AFS client v0.1 registering.
[   11.389407][    T1] Btrfs loaded, assert=on, ref-verify=on, zoned=yes, fsverity=yes
[   11.390120][    T1] Key type big_key registered
[   11.392180][    T1] Key type encrypted registered
[   11.392587][    T1] AppArmor: AppArmor sha1 policy hashing enabled
[   11.393180][    T1] ima: No TPM chip found, activating TPM-bypass!
[   11.393678][    T1] Loading compiled-in module X.509 certificates
[   11.395852][    T1] Loaded X.509 cert 'Build time autogenerated kernel key: 70362406141ebc4a7eb396b230e5abda92294c78'
[   11.396613][    T1] ima: Allocated hash algorithm: sha256
[   11.397085][    T1] ima: No architecture policies found
[   11.397521][    T1] evm: Initialising EVM extended attributes:
[   11.397932][    T1] evm: security.selinux (disabled)
[   11.398273][    T1] evm: security.SMACK64 (disabled)
[   11.398614][    T1] evm: security.SMACK64EXEC (disabled)
[   11.398989][    T1] evm: security.SMACK64TRANSMUTE (disabled)
[   11.399386][    T1] evm: security.SMACK64MMAP (disabled)
[   11.399762][    T1] evm: security.apparmor
[   11.400049][    T1] evm: security.ima
[   11.400311][    T1] evm: security.capability
[   11.400607][    T1] evm: HMAC attrs: 0x1
[   11.401554][    T1] PM:   Magic number: 11:292:970
[   11.402051][    T1] bdi 2:0: hash matches
[   11.402958][    T1] printk: console [netcon0] enabled
[   11.403328][    T1] netconsole: network logging started
[   11.403853][    T1] gtp: GTP module loaded (pdp ctx size 104 bytes)
[   11.404588][    T1] rdma_rxe: loaded
[   11.405075][    T1] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[   11.406575][    T1] Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[   11.407522][ T2589] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[   11.408216][ T2589] platform regulatory.0: Falling back to sysfs fallback for: regulatory.db
[   11.410010][    T1] clk: Disabling unused clocks
[   11.410395][    T1] ALSA device list:
[   11.410664][    T1]   #0: Dummy 1
[   11.410891][    T1]   #1: Loopback 1
[   11.411135][    T1]   #2: Virtual MIDI Card 1
[   11.412404][    T1] md: Waiting for all devices to be available before autodetect
[   11.412814][    T1] md: If you don't use raid, use raid=noautodetect
[   11.413161][    T1] md: Autodetecting RAID arrays.
[   11.413433][    T1] md: autorun ...
[   11.413630][    T1] md: ... autorun DONE.
[   11.437984][    T1] EXT4-fs (sda1): INFO: recovery required on readonly filesystem
[   11.438426][    T1] EXT4-fs (sda1): write access will be enabled during recovery
[   11.464527][    T1] EXT4-fs (sda1): recovery complete
[   11.466788][    T1] EXT4-fs (sda1): mounted filesystem 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 ro with ordered data mode. Quota mode: none.
[   11.468073][    T1] VFS: Mounted root (ext4 filesystem) readonly on device 8:1.
[   11.469617][    T1] devtmpfs: mounted
[   11.518640][    T1] Freeing unused kernel image (initmem) memory: 3296K
[   11.644092][    T1] Write protecting the kernel read-only data: 184320k
[   11.647180][    T1] Freeing unused kernel image (rodata/data gap) memory: 1264K
[   11.723640][    T1] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[   11.725820][    T1] Failed to set sysctl parameter 'max_rcu_stall_to_panic=1': parameter not found
[   11.726697][    T1] Run /sbin/init as init process
[   11.727069][    T1]   with arguments:
[   11.727075][    T1]     /sbin/init
[   11.727083][    T1]   with environment:
[   11.727091][    T1]     HOME=/
[   11.727096][    T1]     TERM=linux
[   11.727101][    T1]     spec_store_bypass_disable=prctl
[   11.811714][ T4530] mount (4530) used greatest stack depth: 24496 bytes left
[   11.832654][ T4531] EXT4-fs (sda1): re-mounted 5941fea2-f5fa-4b4e-b5ef-9af118b27b95 r/w. Quota mode: none.
[   11.852842][ T4534] mkdir (4534) used greatest stack depth: 24400 bytes left
[   11.898037][ T4535] mount (4535) used greatest stack depth: 23264 bytes left
[   12.329942][ T4565] udevd[4565]: starting version 3.2.11
[   12.369891][ T4565] udevd (4565) used greatest stack depth: 23216 bytes left
[   12.370515][ T4566] udevd[4566]: starting eudev-3.2.11
[   15.250397][ T4795] 8021q: adding VLAN 0 to HW filter on device bond0
[   15.252536][ T4795] eql: remember to turn off Van-Jacobson compression on your slave devices
[   15.266469][ T4795] 8021q: adding VLAN 0 to HW filter on device eth0
[   15.275064][   T24] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[   15.276836][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   75.765145][ T2589] cfg80211: failed to load regulatory.db
[ 1570.027166][ T5236] chnl_net:caif_netlink_parms(): no params data found
[ 1570.053944][ T5236] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1570.054442][ T5236] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1570.054941][ T5236] bridge_slave_0: entered allmulticast mode
[ 1570.055479][ T5236] bridge_slave_0: entered promiscuous mode
[ 1570.056707][ T5236] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1570.057083][ T5236] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1570.057466][ T5236] bridge_slave_1: entered allmulticast mode
[ 1570.057974][ T5236] bridge_slave_1: entered promiscuous mode
[ 1570.071908][ T5236] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 1570.073411][ T5236] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 1570.089529][ T5236] team0: Port device team_slave_0 added
[ 1570.091237][ T5236] team0: Port device team_slave_1 added
[ 1570.104521][ T5236] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 1570.104890][ T5236] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 1570.106176][ T5236] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 1570.107468][ T5236] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 1570.107844][ T5236] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem.
[ 1570.109122][ T5236] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 1570.121355][ T5236] hsr_slave_0: entered promiscuous mode
[ 1570.121856][ T5236] hsr_slave_1: entered promiscuous mode
[ 1570.157716][ T5236] netdevsim netdevsim0 netdevsim0: renamed from eth0
[ 1570.159401][ T5236] netdevsim netdevsim0 netdevsim1: renamed from eth1
[ 1570.160465][ T5236] netdevsim netdevsim0 netdevsim2: renamed from eth2
[ 1570.161558][ T5236] netdevsim netdevsim0 netdevsim3: renamed from eth3
[ 1570.167115][ T5236] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1570.167541][ T5236] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1570.168056][ T5236] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1570.168445][ T5236] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1570.180359][ T5236] 8021q: adding VLAN 0 to HW filter on device bond0
[ 1570.182526][ T5246] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
[ 1570.183700][ T5246] bridge0: port 1(bridge_slave_0) entered disabled state
[ 1570.184662][ T5246] bridge0: port 2(bridge_slave_1) entered disabled state
[ 1570.185390][ T5246] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 1570.187900][ T5236] 8021q: adding VLAN 0 to HW filter on device team0
[ 1570.200494][ T5236] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
[ 1570.201597][ T5236] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
[ 1570.206557][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready
[ 1570.207644][   T24] bridge0: port 1(bridge_slave_0) entered blocking state
[ 1570.208430][   T24] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 1570.209421][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready
[ 1570.210570][   T24] bridge0: port 2(bridge_slave_1) entered blocking state
[ 1570.211395][   T24] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 1570.212818][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready
[ 1570.214122][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
[ 1570.215308][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
[ 1570.216338][   T24] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready
[ 1570.217985][ T5249] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready
[ 1570.219049][ T5249] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready
[ 1570.222327][  T133] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready
[ 1570.223011][  T133] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready
[ 1570.227121][ T5236] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 1570.233359][  T133] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready
[ 1570.241443][ T5236] veth0_vlan: entered promiscuous mode
[ 1570.244824][ T5236] veth1_vlan: entered promiscuous mode
[ 1570.253615][ T5236] veth0_macvtap: entered promiscuous mode
[ 1570.255067][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready
[ 1570.255930][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready
[ 1570.256554][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready
[ 1570.257252][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready
[ 1570.258364][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready
[ 1570.259952][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready
[ 1570.261135][ T5251] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
[ 1570.263892][ T5236] veth1_macvtap: entered promiscuous mode
[ 1570.271006][ T5236] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 1570.271924][  T131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
[ 1570.275588][ T5236] batman_adv: batadv0: Interface activated: batadv_slave_1
[ 1570.276368][  T134] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
[ 1570.278586][ T5236] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 1570.279627][ T5236] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 1570.280567][ T5236] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 1570.281507][ T5236] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 1571.764832][ T5256]
[ 1571.764989][ T5256] ======================================================
[ 1571.765347][ T5256] WARNING: possible circular locking dependency detected
[ 1571.765711][ T5256] 6.4.0-rc6-00195-g40f71e7cd3c6 #4 Not tainted
[ 1571.766031][ T5256] ------------------------------------------------------
[ 1571.766396][ T5256] repro/5256 is trying to acquire lock:
[ 1571.766688][ T5256] ffff888122d0f5c8 (&jsk->sk_session_queue_lock){+.-.}-{2:2}, at: j1939_sk_queue_drop_all (net/can/j1939/socket.c:140) 
[ 1571.767294][ T5256]
[ 1571.767294][ T5256] but task is already holding lock:
[ 1571.767699][ T5256] ffff88816bc010d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: j1939_sk_netdev_event_netdown (net/can/j1939/socket.c:1275) 
[ 1571.768294][ T5256]
[ 1571.768294][ T5256] which lock already depends on the new lock.
[ 1571.768294][ T5256]
[ 1571.768839][ T5256]
[ 1571.768839][ T5256] the existing dependency chain (in reverse order) is:
[ 1571.769305][ T5256]
[ 1571.769305][ T5256] -> #2 (&priv->j1939_socks_lock){+.-.}-{2:2}:
[ 1571.769750][ T5256] _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178) 
[ 1571.770042][ T5256] j1939_sk_errqueue (net/can/j1939/socket.c:1082) 
[ 1571.770334][ T5256] j1939_session_destroy (net/can/j1939/transport.c:271) 
[ 1571.770648][ T5256] j1939_session_deactivate_locked (net/can/j1939/transport.c:295 ./include/linux/kref.h:65 net/can/j1939/transport.c:299 net/can/j1939/transport.c:1086 net/can/j1939/transport.c:1074) 
[ 1571.771016][ T5256] j1939_cancel_active_session (net/can/j1939/transport.c:2194) 
[ 1571.771357][ T5256] j1939_netdev_notify (net/can/j1939/main.c:381) 
[ 1571.771661][ T5256] notifier_call_chain (kernel/notifier.c:95) 
[ 1571.771961][ T5256] call_netdevice_notifiers_info (net/core/dev.c:1935) 
[ 1571.772308][ T5256] dev_close_many (net/core/dev.c:1529) 
[ 1571.772595][ T5256] unregister_netdevice_many_notify (net/core/dev.c:10859) 
[ 1571.772976][ T5256] rtnl_dellink (net/core/rtnetlink.c:3212 net/core/rtnetlink.c:3262) 
[ 1571.773264][ T5256] rtnetlink_rcv_msg (net/core/rtnetlink.c:6417) 
[ 1571.773571][ T5256] netlink_rcv_skb (net/netlink/af_netlink.c:2547) 
[ 1571.773880][ T5256] netlink_unicast (net/netlink/af_netlink.c:1340 net/netlink/af_netlink.c:1365) 
[ 1571.774196][ T5256] netlink_sendmsg (net/netlink/af_netlink.c:1913) 
[ 1571.774497][ T5256] sock_sendmsg (net/socket.c:727 net/socket.c:747) 
[ 1571.774775][ T5256] ____sys_sendmsg (net/socket.c:2503) 
[ 1571.775075][ T5256] ___sys_sendmsg (net/socket.c:2559) 
[ 1571.775372][ T5256] __sys_sendmsg (net/socket.c:2588) 
[ 1571.775658][ T5256] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 1571.775936][ T5256] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[ 1571.776295][ T5256]
[ 1571.776295][ T5256] -> #1 (&priv->active_session_list_lock){+.-.}-{2:2}:
[ 1571.776796][ T5256] _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178) 
[ 1571.777096][ T5256] j1939_session_activate (net/can/j1939/transport.c:1565) 
[ 1571.777426][ T5256] j1939_sk_queue_activate_next (net/can/j1939/socket.c:181 net/can/j1939/socket.c:208) 
[ 1571.777788][ T5256] j1939_session_completed (net/can/j1939/transport.c:1223) 
[ 1571.778119][ T5256] j1939_xtp_rx_eoma (./include/linux/kref.h:64 net/can/j1939/transport.c:299 net/can/j1939/transport.c:1411) 
[ 1571.778421][ T5256] j1939_tp_recv (net/can/j1939/transport.c:2149) 
[ 1571.778711][ T5256] j1939_can_recv (net/can/j1939/main.c:112 net/can/j1939/main.c:38) 
[ 1571.779007][ T5256] can_rcv_filter (net/can/af_can.c:573 net/can/af_can.c:606) 
[ 1571.779293][ T5256] can_receive (net/can/af_can.c:663) 
[ 1571.779575][ T5256] can_rcv (net/can/af_can.c:688) 
[ 1571.779838][ T5256] __netif_receive_skb_one_core (net/core/dev.c:5493) 
[ 1571.780198][ T5256] __netif_receive_skb (net/core/dev.c:5607) 
[ 1571.780520][ T5256] process_backlog (./include/linux/rcupdate.h:802 net/core/dev.c:5936) 
[ 1571.780821][ T5256] __napi_poll.constprop.0 (net/core/dev.c:6499) 
[ 1571.781147][ T5256] net_rx_action (net/core/dev.c:6567 net/core/dev.c:6698) 
[ 1571.781438][ T5256] __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:572) 
[ 1571.781719][ T5256] run_ksoftirqd (kernel/softirq.c:425 kernel/softirq.c:940 kernel/softirq.c:931) 
[ 1571.781997][ T5256] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1571.782296][ T5256] kthread (kernel/kthread.c:379) 
[ 1571.782563][ T5256] ret_from_fork (arch/x86/entry/entry_64.S:314) 
[ 1571.782844][ T5256]
[ 1571.782844][ T5256] -> #0 (&jsk->sk_session_queue_lock){+.-.}-{2:2}:
[ 1571.783330][ T5256] __lock_acquire (kernel/locking/lockdep.c:3114 kernel/locking/lockdep.c:3232 kernel/locking/lockdep.c:3847 kernel/locking/lockdep.c:5088) 
[ 1571.783640][ T5256] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5707 kernel/locking/lockdep.c:5670) 
[ 1571.783922][ T5256] _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178) 
[ 1571.784223][ T5256] j1939_sk_queue_drop_all (net/can/j1939/socket.c:140) 
[ 1571.784552][ T5256] j1939_sk_netdev_event_netdown (net/can/j1939/socket.c:1275 (discriminator 2)) 
[ 1571.784910][ T5256] j1939_netdev_notify (net/can/j1939/main.c:382) 
[ 1571.785228][ T5256] notifier_call_chain (kernel/notifier.c:95) 
[ 1571.785552][ T5256] call_netdevice_notifiers_info (net/core/dev.c:1935) 
[ 1571.785912][ T5256] dev_close_many (net/core/dev.c:1529) 
[ 1571.786206][ T5256] unregister_netdevice_many_notify (net/core/dev.c:10859) 
[ 1571.786592][ T5256] rtnl_dellink (net/core/rtnetlink.c:3212 net/core/rtnetlink.c:3262) 
[ 1571.786872][ T5256] rtnetlink_rcv_msg (net/core/rtnetlink.c:6417) 
[ 1571.787190][ T5256] netlink_rcv_skb (net/netlink/af_netlink.c:2547) 
[ 1571.787487][ T5256] netlink_unicast (net/netlink/af_netlink.c:1340 net/netlink/af_netlink.c:1365) 
[ 1571.787782][ T5256] netlink_sendmsg (net/netlink/af_netlink.c:1913) 
[ 1571.788084][ T5256] sock_sendmsg (net/socket.c:727 net/socket.c:747) 
[ 1571.788369][ T5256] ____sys_sendmsg (net/socket.c:2503) 
[ 1571.788669][ T5256] ___sys_sendmsg (net/socket.c:2559) 
[ 1571.788969][ T5256] __sys_sendmsg (net/socket.c:2588) 
[ 1571.789247][ T5256] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 1571.789529][ T5256] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[ 1571.789888][ T5256]
[ 1571.789888][ T5256] other info that might help us debug this:
[ 1571.789888][ T5256]
[ 1571.790455][ T5256] Chain exists of:
[ 1571.790455][ T5256]   &jsk->sk_session_queue_lock --> &priv->active_session_list_lock --> &priv->j1939_socks_lock
[ 1571.790455][ T5256]
[ 1571.791339][ T5256]  Possible unsafe locking scenario:
[ 1571.791339][ T5256]
[ 1571.791761][ T5256]        CPU0                    CPU1
[ 1571.792065][ T5256]        ----                    ----
[ 1571.792358][ T5256]   lock(&priv->j1939_socks_lock);
[ 1571.792650][ T5256]                                lock(&priv->active_session_list_lock);
[ 1571.793115][ T5256]                                lock(&priv->j1939_socks_lock);
[ 1571.793542][ T5256]   lock(&jsk->sk_session_queue_lock);
[ 1571.793848][ T5256]
[ 1571.793848][ T5256]  *** DEADLOCK ***
[ 1571.793848][ T5256]
[ 1571.794304][ T5256] 2 locks held by repro/5256:
[ 1571.794564][ T5256] #0: ffffffff8e118ce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6415) 
[ 1571.795105][ T5256] #1: ffff88816bc010d0 (&priv->j1939_socks_lock){+.-.}-{2:2}, at: j1939_sk_netdev_event_netdown (net/can/j1939/socket.c:1275) 
[ 1571.795749][ T5256]
[ 1571.795749][ T5256] stack backtrace:
[ 1571.796069][ T5256] CPU: 7 PID: 5256 Comm: repro Not tainted 6.4.0-rc6-00195-g40f71e7cd3c6 #4
[ 1571.796539][ T5256] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
[ 1571.797050][ T5256] Call Trace:
[ 1571.797233][ T5256]  <TASK>
[ 1571.797400][ T5256] dump_stack_lvl (lib/dump_stack.c:107) 
[ 1571.797666][ T5256] check_noncircular (kernel/locking/lockdep.c:2188) 
[ 1571.797952][ T5256] ? print_circular_bug (kernel/locking/lockdep.c:2167) 
[ 1571.798253][ T5256] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1571.798525][ T5256] ? kasan_save_free_info (mm/kasan/generic.c:523) 
[ 1571.798818][ T5256] ? j1939_session_deactivate_locked (net/can/j1939/transport.c:295 ./include/linux/kref.h:65 net/can/j1939/transport.c:299 net/can/j1939/transport.c:1086 net/can/j1939/transport.c:1074) 
[ 1571.799180][ T5256] ? j1939_cancel_active_session (net/can/j1939/transport.c:2194) 
[ 1571.799514][ T5256] ? j1939_netdev_notify (net/can/j1939/main.c:381) 
[ 1571.799816][ T5256] __lock_acquire (kernel/locking/lockdep.c:3114 kernel/locking/lockdep.c:3232 kernel/locking/lockdep.c:3847 kernel/locking/lockdep.c:5088) 
[ 1571.800096][ T5256] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4944) 
[ 1571.800434][ T5256] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4944) 
[ 1571.800771][ T5256] lock_acquire (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5707 kernel/locking/lockdep.c:5670) 
[ 1571.801028][ T5256] ? j1939_sk_queue_drop_all (net/can/j1939/socket.c:140) 
[ 1571.801338][ T5256] ? lock_sync (kernel/locking/lockdep.c:5673) 
[ 1571.801591][ T5256] ? find_held_lock (kernel/locking/lockdep.c:5195) 
[ 1571.801865][ T5256] ? sock_def_error_report (./include/linux/rcupdate.h:805 net/core/sock.c:3276) 
[ 1571.802169][ T5256] ? lock_downgrade (kernel/locking/lockdep.c:5713) 
[ 1571.802444][ T5256] _raw_spin_lock_bh (./include/linux/spinlock_api_smp.h:127 kernel/locking/spinlock.c:178) 
[ 1571.802706][ T5256] ? j1939_sk_queue_drop_all (net/can/j1939/socket.c:140) 
[ 1571.803021][ T5256] j1939_sk_queue_drop_all (net/can/j1939/socket.c:140) 
[ 1571.803322][ T5256] j1939_sk_netdev_event_netdown (net/can/j1939/socket.c:1275 (discriminator 2)) 
[ 1571.803659][ T5256] j1939_netdev_notify (net/can/j1939/main.c:382) 
[ 1571.803951][ T5256] notifier_call_chain (kernel/notifier.c:95) 
[ 1571.804238][ T5256] ? j1939_priv_get_by_ndev_locked (net/can/j1939/main.c:366) 
[ 1571.804582][ T5256] call_netdevice_notifiers_info (net/core/dev.c:1935) 
[ 1571.804921][ T5256] dev_close_many (net/core/dev.c:1529) 
[ 1571.805183][ T5256] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4944) 
[ 1571.805514][ T5256] ? lock_downgrade (kernel/locking/lockdep.c:5713) 
[ 1571.805792][ T5256] ? __dev_close_many (net/core/dev.c:1516) 
[ 1571.806074][ T5256] ? __nla_validate_parse (lib/nlattr.c:577) 
[ 1571.806385][ T5256] unregister_netdevice_many_notify (net/core/dev.c:10859) 
[ 1571.806737][ T5256] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:22 ./include/linux/atomic/atomic-long.h:29 ./include/linux/atomic/atomic-instrumented.h:1310 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) 
[ 1571.807006][ T5256] ? unregister_netdevice_queue (net/core/dev.c:10811) 
[ 1571.807331][ T5256] ? netdev_freemem (net/core/dev.c:10827) 
[ 1571.807594][ T5256] ? vxcan_get_link_net (drivers/net/can/vxcan.c:270) 
[ 1571.807891][ T5256] rtnl_dellink (net/core/rtnetlink.c:3212 net/core/rtnetlink.c:3262) 
[ 1571.808149][ T5256] ? __lock_acquire (./arch/x86/include/asm/bitops.h:228 ./arch/x86/include/asm/bitops.h:240 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3815 kernel/locking/lockdep.c:5088) 
[ 1571.808425][ T5256] ? rtnl_dellinkprop (net/core/rtnetlink.c:3218) 
[ 1571.808706][ T5256] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6415) 
[ 1571.808990][ T5256] ? mutex_lock_io_nested (kernel/locking/mutex.c:746) 
[ 1571.809301][ T5256] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:805 net/core/rtnetlink.c:6412) 
[ 1571.809592][ T5256] ? lock_downgrade (kernel/locking/lockdep.c:5713) 
[ 1571.809863][ T5256] ? rtnl_dellinkprop (net/core/rtnetlink.c:3218) 
[ 1571.810134][ T5256] rtnetlink_rcv_msg (net/core/rtnetlink.c:6417) 
[ 1571.810411][ T5256] ? rtnl_getlink (net/core/rtnetlink.c:6313) 
[ 1571.810671][ T5256] ? __sys_sendmsg (net/socket.c:2588) 
[ 1571.810934][ T5256] ? do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 1571.811190][ T5256] ? netdev_core_pick_tx (net/core/dev.c:4151) 
[ 1571.811494][ T5256] netlink_rcv_skb (net/netlink/af_netlink.c:2547) 
[ 1571.811772][ T5256] ? rtnl_getlink (net/core/rtnetlink.c:6313) 
[ 1571.812038][ T5256] ? netlink_ack (net/netlink/af_netlink.c:2523) 
[ 1571.812313][ T5256] ? netlink_deliver_tap (./include/linux/rcupdate.h:332 ./include/linux/rcupdate.h:806 net/netlink/af_netlink.c:340) 
[ 1571.812610][ T5256] netlink_unicast (net/netlink/af_netlink.c:1340 net/netlink/af_netlink.c:1365) 
[ 1571.812883][ T5256] ? netlink_attachskb (net/netlink/af_netlink.c:1350) 
[ 1571.813168][ T5256] ? __virt_addr_valid (arch/x86/mm/physaddr.c:66) 
[ 1571.813454][ T5256] ? __phys_addr_symbol (arch/x86/mm/physaddr.c:42 (discriminator 2)) 
[ 1571.813735][ T5256] ? __check_object_size (mm/usercopy.c:113 mm/usercopy.c:145 mm/usercopy.c:254 mm/usercopy.c:213) 
[ 1571.814029][ T5256] netlink_sendmsg (net/netlink/af_netlink.c:1913) 
[ 1571.814302][ T5256] ? netlink_unicast (net/netlink/af_netlink.c:1832) 
[ 1571.814580][ T5256] ? import_ubuf (lib/iov_iter.c:1992) 
[ 1571.814836][ T5256] ? bpf_lsm_socket_sendmsg (./include/linux/lsm_hook_defs.h:301) 
[ 1571.815131][ T5256] ? netlink_unicast (net/netlink/af_netlink.c:1832) 
[ 1571.815410][ T5256] sock_sendmsg (net/socket.c:727 net/socket.c:747) 
[ 1571.815657][ T5256] ____sys_sendmsg (net/socket.c:2503) 
[ 1571.815927][ T5256] ? kernel_sendmsg (net/socket.c:2450) 
[ 1571.816188][ T5256] ? __copy_msghdr (net/socket.c:2430) 
[ 1571.816455][ T5256] ___sys_sendmsg (net/socket.c:2559) 
[ 1571.816715][ T5256] ? do_recvmmsg (net/socket.c:2546) 
[ 1571.816967][ T5256] ? find_held_lock (kernel/locking/lockdep.c:5195) 
[ 1571.817236][ T5256] ? __might_fault (mm/memory.c:5732 mm/memory.c:5725) 
[ 1571.817502][ T5256] ? lock_downgrade (kernel/locking/lockdep.c:5713) 
[ 1571.817782][ T5256] ? __fget_light (fs/file.c:1027) 
[ 1571.818045][ T5256] __sys_sendmsg (net/socket.c:2588) 
[ 1571.818292][ T5256] ? __sys_sendmsg_sock (net/socket.c:2574) 
[ 1571.818570][ T5256] ? fd_install (./include/linux/rcupdate.h:888 fs/file.c:623) 
[ 1571.818824][ T5256] ? syscall_enter_from_user_mode (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:111) 
[ 1571.819154][ T5256] do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) 
[ 1571.819402][ T5256] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) 
[ 1571.819725][ T5256] RIP: 0033:0x7f97bf1be6a9
[ 1571.819965][ T5256] Code: 5c c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4f 37 0d 00 f7 d8 64 89 01 48
All code
========
   0:	5c                   	pop    %rsp
   1:	c3                   	ret    
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall 
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret    
  33:	48 8b 0d 4f 37 0d 00 	mov    0xd374f(%rip),%rcx        # 0xd3789
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret    
   9:	48 8b 0d 4f 37 0d 00 	mov    0xd374f(%rip),%rcx        # 0xd375f
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[ 1571.821018][ T5256] RSP: 002b:00007ffc5e6c7c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1571.821480][ T5256] RAX: ffffffffffffffda RBX: 00005624aff57bf8 RCX: 00007f97bf1be6a9
[ 1571.821918][ T5256] RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000008
[ 1571.822351][ T5256] RBP: 00007ffc5e6c7d30 R08: 00000000aff55129 R09: 00000000aff55129
[ 1571.822789][ T5256] R10: 00000000aff55129 R11: 0000000000000246 R12: 00007ffc5e6c7ea8
[ 1571.823221][ T5256] R13: 00007ffc5e6c7eb8 R14: 00005624aff54e41 R15: 00007f97bf2d1a80
[ 1571.823651][ T5256]  </TASK>
[ 1714.684396][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 1854.874228][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 1995.104385][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 2135.334473][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 2275.584115][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 2415.814417][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 2555.834429][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2
[ 2695.974422][ T5256] unregister_netdevice: waiting for vxcan0 to become free. Usage count = 2

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Astra Joan]

Hi Oleksij,

Thank you for providing help with the bug fix! The patch was created
when I was working on another bug:

https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84

But the patch was not a direct fix of the problem reported in the
unregister_netdevice function call. Instead, it suppresses potential
deadlock information to guarantee the real bug would show up. Since I
have verified that the patch resolved a deadlock situation involving
the exact same locks, I'm pretty confident it would be a proper fix for
the current bug in this thread.

I'm not sure, though, about how I could instruct Syzbot to create a
reproducer to properly test this patch. Could you or anyone here help
me find the next step? Thank you so much!

Best regards,
Ziqi

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Oleksij Rempel]

On Tue, Jul 04, 2023 at 10:55:47AM -0700, Astra Joan wrote:
> Hi Oleksij,
> 
> Thank you for providing help with the bug fix! The patch was created
> when I was working on another bug:
> 
> https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84
> 
> But the patch was not a direct fix of the problem reported in the
> unregister_netdevice function call. Instead, it suppresses potential
> deadlock information to guarantee the real bug would show up. Since I
> have verified that the patch resolved a deadlock situation involving
> the exact same locks, I'm pretty confident it would be a proper fix for
> the current bug in this thread.
> 
> I'm not sure, though, about how I could instruct Syzbot to create a
> reproducer to properly test this patch. Could you or anyone here help
> me find the next step? Thank you so much!

Sorry, I'm not syzbot expert. I hope someone else can help here.

Regards,
Oleksij
-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: [PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Dmitry Vyukov]

On Wed, 5 Jul 2023 at 06:40, Oleksij Rempel <o.rempel@pengutronix.de> wrote:
>
> On Tue, Jul 04, 2023 at 10:55:47AM -0700, Astra Joan wrote:
> > Hi Oleksij,
> >
> > Thank you for providing help with the bug fix! The patch was created
> > when I was working on another bug:
> >
> > https://syzkaller.appspot.com/bug?extid=881d65229ca4f9ae8c84
> >
> > But the patch was not a direct fix of the problem reported in the
> > unregister_netdevice function call. Instead, it suppresses potential
> > deadlock information to guarantee the real bug would show up. Since I
> > have verified that the patch resolved a deadlock situation involving
> > the exact same locks, I'm pretty confident it would be a proper fix for
> > the current bug in this thread.
> >
> > I'm not sure, though, about how I could instruct Syzbot to create a
> > reproducer to properly test this patch. Could you or anyone here help
> > me find the next step? Thank you so much!
>
> Sorry, I'm not syzbot expert. I hope someone else can help here.

+syzkaller mailing list

Hi Astra,

You mean you have a reproducer and you want syzbot to run it with your patch?
No such feature exists at the moment.

Presumably you already run it locally, so I am not sure syzbot can add
much value here.

Re: [syzbot] [net?] unregister_netdevice: waiting for DEV to become free (8)

[Dongliang Mu]

On Wed, Jun 21, 2023 at 3:38 PM 'Ziqi Zhao' via syzkaller-bugs
<syzkaller-bugs@googlegroups.com> wrote:
>
> Hi all,
>
> I'm taking a look at this bug as part of the exercice for the Linux
> Kernel Bug Fixing Summer 2023 program. Thanks to the help from my

This is an interesting program. There are many kernel crashes on the
syzbot dashboard, which needs help.

> mentor, Ivan Orlov and Shuah Khan, I've already obtained a reproduction
> of the issue using the provided C reproducer, and I should be able to
> submit a patch by the end of this week to fix the highlighted error. If
> you have any information or suggestions, please feel free to reply to
> this thread. Any help would be greatly appreciated!

Please carefully read the guidance of submitting patches to linux
kernel [1]. Be careful about your coding style before sending.

Note that, Syzbot has the feature: patch testing. You can upload and
test your own patch to confirm that your patch is working properly.

[1] https://docs.kernel.org/process/submitting-patches.html
>
> Best regards,
> Ziqi
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/20230621070710.380373-1-astrajoan%40yahoo.com.

[PATCH] can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock

[Ziqi Zhao]

The following 3 locks would race against each other, causing the
deadlock situation in the Syzbot bug report:

- j1939_socks_lock
- active_session_list_lock
- sk_session_queue_lock

A reasonable fix is to change j1939_socks_lock to an rwlock, since in
the rare situations where a write lock is required for the linked list
that j1939_socks_lock is protecting, the code does not attempt to
acquire any more locks. This would break the circular lock dependency,
where, for example, the current thread already locks j1939_socks_lock
and attempts to acquire sk_session_queue_lock, and at the same time,
another thread attempts to acquire j1939_socks_lock while holding
sk_session_queue_lock.

NOTE: This patch along does not fix the unregister_netdevice bug
reported by Syzbot; instead, it solves a deadlock situation to prepare
for one or more further patches to actually fix the Syzbot bug, which
appears to be a reference counting problem within the j1939 codebase.

Signed-off-by: Ziqi Zhao <astrajoan@yahoo.com>
---
 net/can/j1939/j1939-priv.h |  2 +-
 net/can/j1939/main.c       |  2 +-
 net/can/j1939/socket.c     | 25 +++++++++++++------------
 3 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/net/can/j1939/j1939-priv.h b/net/can/j1939/j1939-priv.h
index 16af1a7f80f6..74f15592d170 100644
--- a/net/can/j1939/j1939-priv.h
+++ b/net/can/j1939/j1939-priv.h
@@ -86,7 +86,7 @@ struct j1939_priv {
 	unsigned int tp_max_packet_size;
 
 	/* lock for j1939_socks list */
-	spinlock_t j1939_socks_lock;
+	rwlock_t j1939_socks_lock;
 	struct list_head j1939_socks;
 
 	struct kref rx_kref;
diff --git a/net/can/j1939/main.c b/net/can/j1939/main.c
index ecff1c947d68..a6fb89fa6278 100644
--- a/net/can/j1939/main.c
+++ b/net/can/j1939/main.c
@@ -274,7 +274,7 @@ struct j1939_priv *j1939_netdev_start(struct net_device *ndev)
 		return ERR_PTR(-ENOMEM);
 
 	j1939_tp_init(priv);
-	spin_lock_init(&priv->j1939_socks_lock);
+	rwlock_init(&priv->j1939_socks_lock);
 	INIT_LIST_HEAD(&priv->j1939_socks);
 
 	mutex_lock(&j1939_netdev_lock);
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 35970c25496a..6dce9d645116 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -80,16 +80,16 @@ static void j1939_jsk_add(struct j1939_priv *priv, struct j1939_sock *jsk)
 	jsk->state |= J1939_SOCK_BOUND;
 	j1939_priv_get(priv);
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_add_tail(&jsk->list, &priv->j1939_socks);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_jsk_del(struct j1939_priv *priv, struct j1939_sock *jsk)
 {
-	spin_lock_bh(&priv->j1939_socks_lock);
+	write_lock_bh(&priv->j1939_socks_lock);
 	list_del_init(&jsk->list);
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	write_unlock_bh(&priv->j1939_socks_lock);
 
 	j1939_priv_put(priv);
 	jsk->state &= ~J1939_SOCK_BOUND;
@@ -329,13 +329,13 @@ bool j1939_sk_recv_match(struct j1939_priv *priv, struct j1939_sk_buff_cb *skcb)
 	struct j1939_sock *jsk;
 	bool match = false;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		match = j1939_sk_recv_match_one(jsk, skcb);
 		if (match)
 			break;
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 
 	return match;
 }
@@ -344,11 +344,11 @@ void j1939_sk_recv(struct j1939_priv *priv, struct sk_buff *skb)
 {
 	struct j1939_sock *jsk;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		j1939_sk_recv_one(jsk, skb);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static void j1939_sk_sock_destruct(struct sock *sk)
@@ -484,6 +484,7 @@ static int j1939_sk_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 
 		priv = j1939_netdev_start(ndev);
 		dev_put(ndev);
+
 		if (IS_ERR(priv)) {
 			ret = PTR_ERR(priv);
 			goto out_release_sock;
@@ -1078,12 +1079,12 @@ void j1939_sk_errqueue(struct j1939_session *session,
 	}
 
 	/* spread RX notifications to all sockets subscribed to this session */
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		if (j1939_sk_recv_match_one(jsk, &session->skcb))
 			__j1939_sk_errqueue(session, &jsk->sk, type);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 };
 
 void j1939_sk_send_loop_abort(struct sock *sk, int err)
@@ -1271,7 +1272,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 	struct j1939_sock *jsk;
 	int error_code = ENETDOWN;
 
-	spin_lock_bh(&priv->j1939_socks_lock);
+	read_lock_bh(&priv->j1939_socks_lock);
 	list_for_each_entry(jsk, &priv->j1939_socks, list) {
 		jsk->sk.sk_err = error_code;
 		if (!sock_flag(&jsk->sk, SOCK_DEAD))
@@ -1279,7 +1280,7 @@ void j1939_sk_netdev_event_netdown(struct j1939_priv *priv)
 
 		j1939_sk_queue_drop_all(priv, jsk, error_code);
 	}
-	spin_unlock_bh(&priv->j1939_socks_lock);
+	read_unlock_bh(&priv->j1939_socks_lock);
 }
 
 static int j1939_sk_no_ioctlcmd(struct socket *sock, unsigned int cmd,
-- 
2.34.1