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WARNING in dev_watchdog

Status: closed as invalid on 2017/10/22 12:45
First crash: 2487d, last: 2462d
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in dev_watchdog (2) net C inconclusive 6791 138d 1537d 26/27 fixed on 2024/01/30 15:47
linux-6.1 WARNING in dev_watchdog origin:upstream missing-backport C inconclusive 146 52d 460d 0/3 upstream: reported C repro on 2023/03/11 19:14
linux-5.15 WARNING in dev_watchdog missing-backport origin:lts-only C inconclusive 213 2d20h 461d 0/3 upstream: reported C repro on 2023/03/10 20:16

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x821/0xa10 net/sched/sch_generic.c:319
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-next-20170915+ #5
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x417 kernel/panic.c:181
 __warn+0x1c4/0x1d9 kernel/panic.c:542
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:178
 do_trap_no_signal arch/x86/kernel/traps.c:212 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:261
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:298
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:311
 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905
RIP: 0010:dev_watchdog+0x821/0xa10 net/sched/sch_generic.c:319
RSP: 0018:ffff88003ed07678 EFLAGS: 00010286
RAX: 0000000000000039 RBX: ffff88006b388240 RCX: 0000000000000000
RDX: 0000000000000039 RSI: 1ffff10007da0e8f RDI: ffffed0007da0ec3
RBP: ffff88003ed07778 R08: ffff88003ed06d68 R09: 0000000000000000
R10: ffff88003e04e340 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88006b388720 R15: ffff88006b259840
 call_timer_fn+0x246/0x850 kernel/time/timer.c:1281
 expire_timers kernel/time/timer.c:1320 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:577
 </IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000
RDX: 1ffffffff0b59340 RSI: 0000000000000001 RDI: ffffffff85ac9a00
RBP: ffff88003e057db0 R08: ffffffff857eba68 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac99f0
R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340
 arch_safe_halt arch/x86/include/asm/paravirt.h:93 [inline]
 default_idle+0xbf/0x460 arch/x86/kernel/process.c:341
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:332
 default_idle_call+0x36/0x90 kernel/sched/idle.c:98
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x256/0x3b0 kernel/sched/idle.c:246
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:351
 start_secondary+0x2ea/0x3f0 arch/x86/kernel/smpboot.c:277
 secondary_startup_64+0xa5/0xa5 arch/x86/kernel/head_64.S:235
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (25):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/09/17 00:49 linux-next 1f183459b514 da1873aa .config console log report skylake-linux-next-kasan-qemu
2017/09/14 09:18 linux-next 31fc38c47623 96b8e399 .config console log report skylake-linux-next-kasan-qemu
2017/09/14 03:02 linux-next 6f20b7a58cb9 96b8e399 .config console log report skylake-linux-next-kasan-qemu
2017/09/11 07:02 linux-next a31cc455c512 449b6f15 .config console log report ci-upstream-next-kasan-gce
2017/09/07 23:05 linux-next c6be5a0e3ceb 0ed1da4a .config console log report skylake-linux-next-kasan-qemu
2017/09/02 23:58 linux-next 1d53d908b79d a54dce00 .config console log report ci-upstream-next-kasan-gce
2017/08/31 06:22 linux-next 9458bf6edfa8 ed7f9598 .config console log report ci-upstream-next-kasan-gce
2017/08/30 11:06 linux-next 9458bf6edfa8 ed7f9598 .config console log report ci-upstream-next-kasan-gce
2017/08/29 14:06 linux-next 9458bf6edfa8 ed7f9598 .config console log report skylake-linux-next-kasan-qemu
2017/08/29 12:50 linux-next 9458bf6edfa8 ed7f9598 .config console log report skylake-linux-next-kasan-qemu
2017/08/29 11:57 linux-next 9458bf6edfa8 ed7f9598 .config console log report skylake-linux-next-kasan-qemu
2017/08/27 14:45 linux-next 7159188b70e3 4074aed7 .config console log report skylake-linux-next-kasan-qemu
2017/08/27 12:51 linux-next 7159188b70e3 4074aed7 .config console log report skylake-linux-next-kasan-qemu
2017/08/27 12:49 linux-next 7159188b70e3 4074aed7 .config console log report skylake-linux-next-kasan-qemu
2017/08/25 20:17 linux-next 7159188b70e3 4074aed7 .config console log report ci-upstream-next-kasan-gce
2017/08/24 13:47 linux-next 9506597de2cd 3f1aca48 .config console log report ci-upstream-next-kasan-gce
2017/08/23 20:24 linux-next cc6d46bb99b5 f238fbd4 .config console log report ci-upstream-next-kasan-gce
2017/08/23 15:35 linux-next cc6d46bb99b5 f238fbd4 .config console log report ci-upstream-next-kasan-gce
2017/08/23 12:52 linux-next cc6d46bb99b5 f238fbd4 .config console log report ci-upstream-next-kasan-gce
2017/08/23 12:32 linux-next cc6d46bb99b5 f238fbd4 .config console log report ci-upstream-next-kasan-gce
* Struck through repros no longer work on HEAD.