* bpf test error: BUG: sleeping function called from invalid context in sta_info_move_state
@ 2020-11-14 8:42 syzbot
2020-11-15 8:28 ` Dmitry Vyukov
0 siblings, 1 reply; 2+ messages in thread
From: syzbot @ 2020-11-14 8:42 UTC (permalink / raw)
To: ast, daniel, davem, johannes, kuba, linux-kernel, linux-wireless,
netdev, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 96021828 MAINTAINERS/bpf: Update Andrii's entry.
git tree: bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=102717be500000
kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
dashboard link: https://syzkaller.appspot.com/bug?extid=5921b7c1b10a0ddd02bc
compiler: gcc (GCC) 10.1.0-syz 20200507
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5921b7c1b10a0ddd02bc@syzkaller.appspotmail.com
BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 124, name: kworker/u4:3
4 locks held by kworker/u4:3/124:
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243
#1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247
#2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline]
#2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683
#3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline]
#3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732
Preemption disabled at:
[<ffffffff88e63ecf>] __mutex_lock_common kernel/locking/mutex.c:955 [inline]
[<ffffffff88e63ecf>] __mutex_lock+0x10f/0x10e0 kernel/locking/mutex.c:1103
CPU: 0 PID: 124 Comm: kworker/u4:3 Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy4 ieee80211_iface_work
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:118
___might_sleep.cold+0x1e8/0x22e kernel/sched/core.c:7298
sta_info_move_state+0x32/0x8d0 net/mac80211/sta_info.c:1962
sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274
sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738
ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592
ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700
ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476
process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
=============================
[ BUG: Invalid wait context ]
5.10.0-rc2-syzkaller #0 Tainted: G W
-----------------------------
kworker/u4:3/124 is trying to lock:
ffff888035f2a9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740
other info that might help us debug this:
context-{4:4}
4 locks held by kworker/u4:3/124:
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243
#1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247
#2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline]
#2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683
#3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline]
#3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732
stack backtrace:
CPU: 0 PID: 124 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy4 ieee80211_iface_work
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:118
print_lock_invalid_wait_context kernel/locking/lockdep.c:4483 [inline]
check_wait_context kernel/locking/lockdep.c:4544 [inline]
__lock_acquire.cold+0x310/0x3a2 kernel/locking/lockdep.c:4781
lock_acquire kernel/locking/lockdep.c:5436 [inline]
lock_acquire+0x2a3/0x8c0 kernel/locking/lockdep.c:5401
__mutex_lock_common kernel/locking/mutex.c:956 [inline]
__mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740
sta_info_move_state+0x3cf/0x8d0 net/mac80211/sta_info.c:2019
sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274
sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738
ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592
ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700
ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476
process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
kthread+0x3af/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
---
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.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: bpf test error: BUG: sleeping function called from invalid context in sta_info_move_state
2020-11-14 8:42 bpf test error: BUG: sleeping function called from invalid context in sta_info_move_state syzbot
@ 2020-11-15 8:28 ` Dmitry Vyukov
0 siblings, 0 replies; 2+ messages in thread
From: Dmitry Vyukov @ 2020-11-15 8:28 UTC (permalink / raw)
To: syzbot
Cc: Alexei Starovoitov, Daniel Borkmann, David Miller, Johannes Berg,
Jakub Kicinski, LKML, linux-wireless, netdev, syzkaller-bugs
On Sat, Nov 14, 2020 at 9:42 AM syzbot
<syzbot+5921b7c1b10a0ddd02bc@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 96021828 MAINTAINERS/bpf: Update Andrii's entry.
> git tree: bpf
> console output: https://syzkaller.appspot.com/x/log.txt?x=102717be500000
> kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
> dashboard link: https://syzkaller.appspot.com/bug?extid=5921b7c1b10a0ddd02bc
> compiler: gcc (GCC) 10.1.0-syz 20200507
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+5921b7c1b10a0ddd02bc@syzkaller.appspotmail.com
#syz fix: mac80211: free sta in sta_info_insert_finish() on errors
> BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962
> in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 124, name: kworker/u4:3
> 4 locks held by kworker/u4:3/124:
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243
> #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247
> #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline]
> #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683
> #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline]
> #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732
> Preemption disabled at:
> [<ffffffff88e63ecf>] __mutex_lock_common kernel/locking/mutex.c:955 [inline]
> [<ffffffff88e63ecf>] __mutex_lock+0x10f/0x10e0 kernel/locking/mutex.c:1103
> CPU: 0 PID: 124 Comm: kworker/u4:3 Not tainted 5.10.0-rc2-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> Workqueue: phy4 ieee80211_iface_work
> Call Trace:
> __dump_stack lib/dump_stack.c:77 [inline]
> dump_stack+0x107/0x163 lib/dump_stack.c:118
> ___might_sleep.cold+0x1e8/0x22e kernel/sched/core.c:7298
> sta_info_move_state+0x32/0x8d0 net/mac80211/sta_info.c:1962
> sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274
> sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738
> ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592
> ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700
> ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476
> process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
> worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
> kthread+0x3af/0x4a0 kernel/kthread.c:292
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
>
> =============================
> [ BUG: Invalid wait context ]
> 5.10.0-rc2-syzkaller #0 Tainted: G W
> -----------------------------
> kworker/u4:3/124 is trying to lock:
> ffff888035f2a9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740
> other info that might help us debug this:
> context-{4:4}
> 4 locks held by kworker/u4:3/124:
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
> #0: ffff888035f48938 ((wq_completion)phy4){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243
> #1: ffffc9000132fda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247
> #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1021 [inline]
> #2: ffff88801ab98d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x93/0xe80 net/mac80211/ibss.c:1683
> #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_finish net/mac80211/sta_info.c:644 [inline]
> #3: ffffffff8b337160 (rcu_read_lock){....}-{1:2}, at: sta_info_insert_rcu+0x680/0x2ba0 net/mac80211/sta_info.c:732
> stack backtrace:
> CPU: 0 PID: 124 Comm: kworker/u4:3 Tainted: G W 5.10.0-rc2-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> Workqueue: phy4 ieee80211_iface_work
> Call Trace:
> __dump_stack lib/dump_stack.c:77 [inline]
> dump_stack+0x107/0x163 lib/dump_stack.c:118
> print_lock_invalid_wait_context kernel/locking/lockdep.c:4483 [inline]
> check_wait_context kernel/locking/lockdep.c:4544 [inline]
> __lock_acquire.cold+0x310/0x3a2 kernel/locking/lockdep.c:4781
> lock_acquire kernel/locking/lockdep.c:5436 [inline]
> lock_acquire+0x2a3/0x8c0 kernel/locking/lockdep.c:5401
> __mutex_lock_common kernel/locking/mutex.c:956 [inline]
> __mutex_lock+0x134/0x10e0 kernel/locking/mutex.c:1103
> ieee80211_recalc_min_chandef+0x49/0x140 net/mac80211/util.c:2740
> sta_info_move_state+0x3cf/0x8d0 net/mac80211/sta_info.c:2019
> sta_info_free+0x65/0x3b0 net/mac80211/sta_info.c:274
> sta_info_insert_rcu+0x303/0x2ba0 net/mac80211/sta_info.c:738
> ieee80211_ibss_finish_sta+0x212/0x390 net/mac80211/ibss.c:592
> ieee80211_ibss_work+0x2c7/0xe80 net/mac80211/ibss.c:1700
> ieee80211_iface_work+0x82e/0x970 net/mac80211/iface.c:1476
> process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
> worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
> kthread+0x3af/0x4a0 kernel/kthread.c:292
> ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
>
>
> ---
> 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.
>
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^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-11-14 8:42 bpf test error: BUG: sleeping function called from invalid context in sta_info_move_state syzbot
2020-11-15 8:28 ` Dmitry Vyukov
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