* possible deadlock in try_to_wake_up
@ 2018-12-13 15:11 syzbot
0 siblings, 0 replies; only message in thread
From: syzbot @ 2018-12-13 15:11 UTC (permalink / raw)
To: akpm, aryabinin, guro, hannes, jbacik, ktkhai, linux-kernel,
linux-mm, mgorman, mhocko, shakeelb, syzkaller-bugs,
vdavydov.dev, willy
Hello,
syzbot found the following crash on:
HEAD commit: ca40dc225d19 Add linux-next specific files for 20181213
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=126d9fd5400000
kernel config: https://syzkaller.appspot.com/x/.config?x=778d1d35b0e8272b
dashboard link: https://syzkaller.appspot.com/bug?extid=aa4d6d6e9844c73913b8
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+aa4d6d6e9844c73913b8@syzkaller.appspotmail.com
======================================================
WARNING: possible circular locking dependency detected
4.20.0-rc6-next-20181213+ #170 Not tainted
------------------------------------------------------
syz-executor5/1221 is trying to acquire lock:
000000009d8713d8 (&p->pi_lock){-.-.}, at: try_to_wake_up+0xdc/0x1440
kernel/sched/core.c:1965
but task is already holding lock:
00000000a84a436c (&pgdat->kswapd_wait){....}, at:
__wake_up_common_lock+0x19e/0x330 kernel/sched/wait.c:120
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&pgdat->kswapd_wait){....}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
__wake_up_common_lock+0x19e/0x330 kernel/sched/wait.c:120
__wake_up+0xe/0x10 kernel/sched/wait.c:145
wakeup_kswapd+0x592/0x8f0 mm/vmscan.c:4001
steal_suitable_fallback+0x538/0x830 mm/page_alloc.c:2308
__rmqueue_fallback mm/page_alloc.c:2593 [inline]
__rmqueue mm/page_alloc.c:2619 [inline]
rmqueue_bulk mm/page_alloc.c:2641 [inline]
__rmqueue_pcplist mm/page_alloc.c:3106 [inline]
rmqueue_pcplist mm/page_alloc.c:3135 [inline]
rmqueue mm/page_alloc.c:3157 [inline]
get_page_from_freelist+0x32cf/0x5360 mm/page_alloc.c:3570
__alloc_pages_nodemask+0x668/0xec0 mm/page_alloc.c:4608
alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106
alloc_pages include/linux/gfp.h:509 [inline]
__vmalloc_area_node mm/vmalloc.c:1690 [inline]
__vmalloc_node_range+0x5ca/0x8d0 mm/vmalloc.c:1750
__vmalloc_node mm/vmalloc.c:1795 [inline]
__vmalloc_node_flags mm/vmalloc.c:1809 [inline]
vmalloc+0x6f/0x80 mm/vmalloc.c:1831
do_replace_finish+0x10c/0x2940 net/bridge/netfilter/ebtables.c:1019
do_replace+0x384/0x4c0 net/bridge/netfilter/ebtables.c:1159
do_ebt_set_ctl+0xe7/0x110 net/bridge/netfilter/ebtables.c:1528
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x7d/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt+0xd8/0xf0 net/ipv4/ip_sockglue.c:1260
udp_setsockopt+0x62/0xa0 net/ipv4/udp.c:2649
ipv6_setsockopt+0x149/0x170 net/ipv6/ipv6_sockglue.c:935
tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3068
sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2986
__sys_setsockopt+0x1ba/0x3c0 net/socket.c:1903
__do_sys_setsockopt net/socket.c:1914 [inline]
__se_sys_setsockopt net/socket.c:1911 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
-> #3 (&(&zone->lock)->rlock){..-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
rmqueue mm/page_alloc.c:3167 [inline]
get_page_from_freelist+0x9eb/0x5360 mm/page_alloc.c:3570
__alloc_pages_nodemask+0x668/0xec0 mm/page_alloc.c:4608
__alloc_pages include/linux/gfp.h:473 [inline]
alloc_page_interleave+0x25/0x1c0 mm/mempolicy.c:1988
alloc_pages_current+0x2ac/0x350 mm/mempolicy.c:2104
alloc_pages include/linux/gfp.h:509 [inline]
depot_save_stack+0x3f1/0x470 lib/stackdepot.c:260
save_stack+0xa9/0xd0 mm/kasan/common.c:79
set_track mm/kasan/common.c:85 [inline]
kasan_kmalloc+0xcb/0xd0 mm/kasan/common.c:482
kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:397
slab_post_alloc_hook mm/slab.h:444 [inline]
slab_alloc mm/slab.c:3379 [inline]
kmem_cache_alloc+0x11a/0x730 mm/slab.c:3539
kmem_cache_zalloc include/linux/slab.h:730 [inline]
fill_pool lib/debugobjects.c:134 [inline]
__debug_object_init+0xbb8/0x1290 lib/debugobjects.c:379
debug_object_init lib/debugobjects.c:431 [inline]
debug_object_activate+0x323/0x600 lib/debugobjects.c:512
debug_timer_activate kernel/time/timer.c:708 [inline]
debug_activate kernel/time/timer.c:763 [inline]
__mod_timer kernel/time/timer.c:1040 [inline]
mod_timer kernel/time/timer.c:1101 [inline]
add_timer+0x50e/0x15a0 kernel/time/timer.c:1137
__queue_delayed_work+0x249/0x380 kernel/workqueue.c:1533
queue_delayed_work_on+0x1a2/0x1f0 kernel/workqueue.c:1558
queue_delayed_work include/linux/workqueue.h:527 [inline]
schedule_delayed_work include/linux/workqueue.h:628 [inline]
start_dirtytime_writeback+0x4e/0x53 fs/fs-writeback.c:2043
do_one_initcall+0x145/0x957 init/main.c:888
do_initcall_level init/main.c:956 [inline]
do_initcalls init/main.c:964 [inline]
do_basic_setup init/main.c:982 [inline]
kernel_init_freeable+0x5cc/0x6ba init/main.c:1135
kernel_init+0x11/0x1ae init/main.c:1055
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
-> #2 (&base->lock){-.-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
lock_timer_base+0xbb/0x2b0 kernel/time/timer.c:937
__mod_timer kernel/time/timer.c:1009 [inline]
mod_timer kernel/time/timer.c:1101 [inline]
add_timer+0x87f/0x15a0 kernel/time/timer.c:1137
__queue_delayed_work+0x249/0x380 kernel/workqueue.c:1533
queue_delayed_work_on+0x1a2/0x1f0 kernel/workqueue.c:1558
queue_delayed_work include/linux/workqueue.h:527 [inline]
schedule_delayed_work include/linux/workqueue.h:628 [inline]
psi_group_change kernel/sched/psi.c:485 [inline]
psi_task_change+0x3f1/0x5f0 kernel/sched/psi.c:534
psi_enqueue kernel/sched/stats.h:82 [inline]
enqueue_task kernel/sched/core.c:727 [inline]
activate_task+0x21a/0x430 kernel/sched/core.c:751
wake_up_new_task+0x523/0xcf0 kernel/sched/core.c:2423
_do_fork+0x33b/0x11d0 kernel/fork.c:2237
kernel_thread+0x34/0x40 kernel/fork.c:2271
rest_init+0x28/0x372 init/main.c:408
arch_call_rest_init+0xe/0x1b
start_kernel+0x9a5/0x9e0 init/main.c:740
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470
x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
-> #1 (&rq->lock){-.-.}:
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
rq_lock kernel/sched/sched.h:1129 [inline]
task_fork_fair+0xb0/0x6d0 kernel/sched/fair.c:9820
sched_fork+0x443/0xba0 kernel/sched/core.c:2359
copy_process+0x25b9/0x87a0 kernel/fork.c:1883
_do_fork+0x1cb/0x11d0 kernel/fork.c:2212
kernel_thread+0x34/0x40 kernel/fork.c:2271
rest_init+0x28/0x372 init/main.c:408
arch_call_rest_init+0xe/0x1b
start_kernel+0x9a5/0x9e0 init/main.c:740
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470
x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:451
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
-> #0 (&p->pi_lock){-.-.}:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
try_to_wake_up+0xdc/0x1440 kernel/sched/core.c:1965
default_wake_function+0x30/0x50 kernel/sched/core.c:3710
autoremove_wake_function+0x80/0x370 kernel/sched/wait.c:375
__wake_up_common+0x1d7/0x7d0 kernel/sched/wait.c:92
__wake_up_common_lock+0x1c2/0x330 kernel/sched/wait.c:121
__wake_up+0xe/0x10 kernel/sched/wait.c:145
wakeup_kswapd+0x592/0x8f0 mm/vmscan.c:4001
steal_suitable_fallback+0x538/0x830 mm/page_alloc.c:2308
__rmqueue_fallback mm/page_alloc.c:2593 [inline]
__rmqueue mm/page_alloc.c:2619 [inline]
rmqueue_bulk mm/page_alloc.c:2641 [inline]
__rmqueue_pcplist mm/page_alloc.c:3106 [inline]
rmqueue_pcplist mm/page_alloc.c:3135 [inline]
rmqueue mm/page_alloc.c:3157 [inline]
get_page_from_freelist+0x32cf/0x5360 mm/page_alloc.c:3570
__alloc_pages_nodemask+0x668/0xec0 mm/page_alloc.c:4608
alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106
alloc_pages include/linux/gfp.h:509 [inline]
__vmalloc_area_node mm/vmalloc.c:1690 [inline]
__vmalloc_node_range+0x5ca/0x8d0 mm/vmalloc.c:1750
__vmalloc_node mm/vmalloc.c:1795 [inline]
__vmalloc_node_flags mm/vmalloc.c:1809 [inline]
vmalloc+0x6f/0x80 mm/vmalloc.c:1831
do_replace_finish+0x10c/0x2940 net/bridge/netfilter/ebtables.c:1019
do_replace+0x384/0x4c0 net/bridge/netfilter/ebtables.c:1159
do_ebt_set_ctl+0xe7/0x110 net/bridge/netfilter/ebtables.c:1528
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x7d/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt+0xd8/0xf0 net/ipv4/ip_sockglue.c:1260
udp_setsockopt+0x62/0xa0 net/ipv4/udp.c:2649
ipv6_setsockopt+0x149/0x170 net/ipv6/ipv6_sockglue.c:935
tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3068
sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2986
__sys_setsockopt+0x1ba/0x3c0 net/socket.c:1903
__do_sys_setsockopt net/socket.c:1914 [inline]
__se_sys_setsockopt net/socket.c:1911 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Chain exists of:
&p->pi_lock --> &(&zone->lock)->rlock --> &pgdat->kswapd_wait
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&pgdat->kswapd_wait);
lock(&(&zone->lock)->rlock);
lock(&pgdat->kswapd_wait);
lock(&p->pi_lock);
*** DEADLOCK ***
2 locks held by syz-executor5/1221:
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at: spin_lock
include/linux/spinlock.h:329 [inline]
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at: rmqueue_bulk
mm/page_alloc.c:2639 [inline]
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at: __rmqueue_pcplist
mm/page_alloc.c:3106 [inline]
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at: rmqueue_pcplist
mm/page_alloc.c:3135 [inline]
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at: rmqueue
mm/page_alloc.c:3157 [inline]
#0: 0000000023b66a9e (&(&zone->lock)->rlock){..-.}, at:
get_page_from_freelist+0x1cdb/0x5360 mm/page_alloc.c:3570
#1: 00000000a84a436c (&pgdat->kswapd_wait){....}, at:
__wake_up_common_lock+0x19e/0x330 kernel/sched/wait.c:120
stack backtrace:
CPU: 0 PID: 1221 Comm: syz-executor5 Not tainted 4.20.0-rc6-next-20181213+
#170
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x244/0x39d lib/dump_stack.c:113
print_circular_bug.isra.35.cold.56+0x1bd/0x27d
kernel/locking/lockdep.c:1221
check_prev_add kernel/locking/lockdep.c:1863 [inline]
check_prevs_add kernel/locking/lockdep.c:1976 [inline]
validate_chain kernel/locking/lockdep.c:2347 [inline]
__lock_acquire+0x3399/0x4c20 kernel/locking/lockdep.c:3341
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152
try_to_wake_up+0xdc/0x1440 kernel/sched/core.c:1965
default_wake_function+0x30/0x50 kernel/sched/core.c:3710
autoremove_wake_function+0x80/0x370 kernel/sched/wait.c:375
__wake_up_common+0x1d7/0x7d0 kernel/sched/wait.c:92
__wake_up_common_lock+0x1c2/0x330 kernel/sched/wait.c:121
__wake_up+0xe/0x10 kernel/sched/wait.c:145
wakeup_kswapd+0x592/0x8f0 mm/vmscan.c:4001
steal_suitable_fallback+0x538/0x830 mm/page_alloc.c:2308
__rmqueue_fallback mm/page_alloc.c:2593 [inline]
__rmqueue mm/page_alloc.c:2619 [inline]
rmqueue_bulk mm/page_alloc.c:2641 [inline]
__rmqueue_pcplist mm/page_alloc.c:3106 [inline]
rmqueue_pcplist mm/page_alloc.c:3135 [inline]
rmqueue mm/page_alloc.c:3157 [inline]
get_page_from_freelist+0x32cf/0x5360 mm/page_alloc.c:3570
__alloc_pages_nodemask+0x668/0xec0 mm/page_alloc.c:4608
alloc_pages_current+0x173/0x350 mm/mempolicy.c:2106
alloc_pages include/linux/gfp.h:509 [inline]
__vmalloc_area_node mm/vmalloc.c:1690 [inline]
__vmalloc_node_range+0x5ca/0x8d0 mm/vmalloc.c:1750
__vmalloc_node mm/vmalloc.c:1795 [inline]
__vmalloc_node_flags mm/vmalloc.c:1809 [inline]
vmalloc+0x6f/0x80 mm/vmalloc.c:1831
do_replace_finish+0x10c/0x2940 net/bridge/netfilter/ebtables.c:1019
do_replace+0x384/0x4c0 net/bridge/netfilter/ebtables.c:1159
do_ebt_set_ctl+0xe7/0x110 net/bridge/netfilter/ebtables.c:1528
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x7d/0xd0 net/netfilter/nf_sockopt.c:115
ip_setsockopt+0xd8/0xf0 net/ipv4/ip_sockglue.c:1260
udp_setsockopt+0x62/0xa0 net/ipv4/udp.c:2649
ipv6_setsockopt+0x149/0x170 net/ipv6/ipv6_sockglue.c:935
tcp_setsockopt+0x93/0xe0 net/ipv4/tcp.c:3068
sock_common_setsockopt+0x9a/0xe0 net/core/sock.c:2986
__sys_setsockopt+0x1ba/0x3c0 net/socket.c:1903
__do_sys_setsockopt net/socket.c:1914 [inline]
__se_sys_setsockopt net/socket.c:1911 [inline]
__x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457679
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f2b4ec2fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457679
RDX: 0000000000000080 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 00000000000003e0 R09: 0000000000000000
R10: 00000000200004c0 R11: 0000000000000246 R12: 00007f2b4ec306d4
R13: 00000000004c4618 R14: 00000000004d77f8 R15: 00000000ffffffff
__bpf_mt_check_bytecode: 9 callbacks suppressed
xt_bpf: check failed: parse error
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
xt_bpf: check failed: parse error
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
xt_bpf: check failed: parse error
xt_bpf: check failed: parse error
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
xt_bpf: check failed: parse error
xt_bpf: check failed: parse error
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
__bpf_mt_check_bytecode: 22 callbacks suppressed
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
xt_bpf: check failed: parse error
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
xt_bpf: check failed: parse error
xt_bpf: check failed: parse error
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop5' (0000000051a7cf3c): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (0000000051a7cf3c): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
xt_bpf: check failed: parse error
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
xt_bpf: check failed: parse error
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (00000000cc7e0096): kobject_uevent_env
kobject: 'loop4' (00000000cc7e0096): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): kobject_uevent_env
kobject: 'loop1' (00000000ab5963b8): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000ef57b484): kobject_uevent_env
kobject: 'kvm' (00000000ef57b484): fill_kobj_path: path
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (000000007885b562): kobject_uevent_env
kobject: 'loop3' (000000007885b562): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000003765b848): kobject_uevent_env
kobject: 'loop2' (000000003765b848): fill_kobj_path: path
= '/devices/virtual/block/loop2'
xt_bpf: check failed: parse error
---
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