syzbot


WARNING in delayed_work_timer_fn (2)

Status: upstream: reported on 2023/12/11 13:19
Reported-by: syzbot+fe0cb085668a18e84358@syzkaller.appspotmail.com
First crash: 144d, last: 1d09h
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in delayed_work_timer_fn arm 37 3d23h 315d 0/26 upstream: reported on 2023/06/23 03:48
linux-6.1 WARNING in delayed_work_timer_fn 2 283d 386d 0/3 auto-obsoleted due to no activity on 2023/11/02 17:34

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 7732 at kernel/workqueue.c:1441 __queue_work+0x10c8/0x136c kernel/workqueue.c:1441
Modules linked in:
CPU: 1 PID: 7732 Comm: syz-executor.0 Not tainted 6.1.90-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __queue_work+0x10c8/0x136c kernel/workqueue.c:1441
lr : __queue_work+0x10c8/0x136c kernel/workqueue.c:1441
sp : ffff800008017b70
x29: ffff800008017bb0 x28: 0000000000000008 x27: dfff800000000000
x26: ffff0000ee31a800 x25: dfff800000000000 x24: 0000000000000100
x23: ffff0000ee31a9c0 x22: ffff0000cc020008 x21: 1fffe00019804001
x20: 00000000000b0012 x19: ffff0000c3c20bc0 x18: ffff80001e267420
x17: ffff80019ebe8000 x16: ffff8000121591d4 x15: 0000000000010000
x14: 1ffff00002b080b0 x13: dfff800000000000 x12: 000000001b182030
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff80000821631c
x8 : ffff0000cc020000 x7 : ffff8000083fb8a0 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800014288660
x2 : ffff0000c3c20bc0 x1 : 0000000000000100 x0 : 0000000000000000
Call trace:
 __queue_work+0x10c8/0x136c kernel/workqueue.c:1441
 delayed_work_timer_fn+0x74/0x90 kernel/workqueue.c:1646
 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1544 [inline]
 __run_timers+0x584/0x718 kernel/time/timer.c:1820
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1833
 __do_softirq+0x314/0xe38 kernel/softirq.c:571
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:893
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x264/0x4d4 kernel/softirq.c:650
 irq_exit_rcu+0x14/0x84 kernel/softirq.c:662
 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:122 [inline]
 lock_acquire+0x2ac/0x7cc kernel/locking/lockdep.c:5665
 __flush_workqueue+0x14c/0x11c4 kernel/workqueue.c:2812
 drain_workqueue+0xb8/0x32c kernel/workqueue.c:2977
 hci_dev_close_sync+0x38c/0xf6c net/bluetooth/hci_sync.c:5003
 hci_dev_do_close net/bluetooth/hci_core.c:554 [inline]
 hci_unregister_dev+0x1e8/0x4ac net/bluetooth/hci_core.c:2738
 vhci_release+0x7c/0xcc drivers/bluetooth/hci_vhci.c:573
 __fput+0x30c/0x7bc fs/file_table.c:320
 ____fput+0x20/0x30 fs/file_table.c:348
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x554/0x1a88 kernel/exit.c:869
 do_group_exit+0x194/0x22c kernel/exit.c:1019
 __do_sys_exit_group kernel/exit.c:1030 [inline]
 __se_sys_exit_group kernel/exit.c:1028 [inline]
 __wake_up_parent+0x0/0x60 kernel/exit.c:1028
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 166825
hardirqs last  enabled at (166824): [<ffff800012238ed4>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (166824): [<ffff800012238ed4>] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194
hardirqs last disabled at (166825): [<ffff800012238d34>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (166825): [<ffff800012238d34>] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170
softirqs last  enabled at (165344): [<ffff8000103d8398>] sock_orphan include/net/sock.h:2147 [inline]
softirqs last  enabled at (165344): [<ffff8000103d8398>] sk_common_release+0x10c/0x2ec net/core/sock.c:3710
softirqs last disabled at (166815): [<ffff80000802a99c>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/02 17:34 linux-6.1.y 909ba1f1b414 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
2024/04/05 21:06 linux-6.1.y 347385861c50 77230c29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
2024/03/30 01:39 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
2024/03/24 00:20 linux-6.1.y d7543167affd 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
2024/01/12 15:06 linux-6.1.y 7c58bfa711cb f6fa7c28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
2023/12/11 13:18 linux-6.1.y e7cddbb41b63 28b24332 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in delayed_work_timer_fn
* Struck through repros no longer work on HEAD.