syzbot


WARNING in dev_watchdog

Status: upstream: reported C repro on 2023/03/11 19:14
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+494347f8e04565361f94@syzkaller.appspotmail.com
First crash: 471d, last: 63d
Bug presence (3)
Date Name Commit Repro Result
2024/01/12 linux-6.1.y (ToT) 7c58bfa711cb C [report] WARNING in dev_watchdog
2023/05/28 upstream (ToT) 7877cb91f108 C [report] WARNING in dev_watchdog
2024/01/12 upstream (ToT) 70d201a40823 C Didn't crash
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 148d 1547d 26/27 fixed on 2024/01/30 15:47
upstream WARNING in dev_watchdog 25 2472d 2497d 0/27 closed as invalid on 2017/10/22 12:45
linux-5.15 WARNING in dev_watchdog missing-backport origin:lts-only C inconclusive 213 13d 472d 0/3 upstream: reported C repro on 2023/03/10 20:16
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2024/01/18 06:32 2h03m fix candidate upstream job log (0)

Sample crash report:
------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 14995 at net/sched/sch_generic.c:526 dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
Modules linked in:
CPU: 1 PID: 14995 Comm: syz-executor617 Not tainted 6.1.82-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
lr : dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
sp : ffff800008017bb0
x29: ffff800008017be0 x28: dfff800000000000 x27: fffffffffffffb11
x26: ffff0000d9c08800 x25: 0000000000000000 x24: 0000000000000110
x23: ffff0000d870e000 x22: ffff0000d9c08870 x21: ffff0000d870e460
x20: ffff800018167000 x19: ffff0000d870e548 x18: ffff800008016fa0
x17: 0000000000000000 x16: ffff80001214de8c x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : dcb7d67c9b8e6700
x8 : dcb7d67c9b8e6700 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800008017498 x4 : ffff800015922ae0 x3 : ffff8000085886bc
x2 : 0000000000000001 x1 : 0000000000000102 x0 : 0000000000000000
Call trace:
 dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
 call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers+0x554/0x718 kernel/time/timer.c:1790
 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1803
 __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]
 folio_memcg_lock+0x108/0x20c mm/memcontrol.c:2110
 lock_page_memcg+0x44/0x5c mm/memcontrol.c:2134
 page_add_file_rmap+0x150/0xca0 mm/rmap.c:1293
 do_set_pte+0x354/0x528 mm/memory.c:4405
 filemap_map_pages+0xa88/0x12f0 mm/filemap.c:3452
 do_fault_around mm/memory.c:4581 [inline]
 do_read_fault mm/memory.c:4607 [inline]
 do_fault mm/memory.c:4741 [inline]
 handle_pte_fault mm/memory.c:5013 [inline]
 __handle_mm_fault mm/memory.c:5155 [inline]
 handle_mm_fault+0x2538/0x3ef0 mm/memory.c:5276
 __do_page_fault arch/arm64/mm/fault.c:499 [inline]
 do_page_fault+0x330/0x890 arch/arm64/mm/fault.c:583
 do_translation_fault+0x94/0xc8 arch/arm64/mm/fault.c:667
 do_mem_abort+0x74/0x200 arch/arm64/mm/fault.c:803
 el0_ia+0x9c/0x220 arch/arm64/kernel/entry-common.c:533
 el0t_64_sync_handler+0xb4/0xf0 arch/arm64/kernel/entry-common.c:661
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 175
hardirqs last  enabled at (174): [<ffff800008343cc0>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (175): [<ffff800012149b44>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (26): [<ffff800008033178>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (147): [<ffff80000802a99c>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---
sl0: transmit timed out, driver error?

Crashes (146):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/03/23 01:44 linux-6.1.y d7543167affd 4b6cdce6 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/04 11:06 linux-6.1.y a3eb3a74aa8c 25905f5d .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2023/11/14 12:44 linux-6.1.y fb2635ac69ab cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2023/05/28 19:22 linux-6.1.y a343b0dd87b4 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2023/07/02 15:40 linux-6.1.y 0f4ac6b4c5f0 bfc47836 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/04/22 18:22 linux-6.1.y 6741e066ec76 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/04/09 23:11 linux-6.1.y 347385861c50 171ec371 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/04/07 07:38 linux-6.1.y 347385861c50 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/04/01 08:48 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/31 16:06 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/30 22:39 linux-6.1.y e5cd595e23c1 6baf5069 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/28 12:33 linux-6.1.y e5cd595e23c1 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/27 11:15 linux-6.1.y e5cd595e23c1 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/25 04:33 linux-6.1.y d7543167affd 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/24 11:31 linux-6.1.y d7543167affd 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/20 09:41 linux-6.1.y d7543167affd a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/19 00:17 linux-6.1.y d7543167affd baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/13 13:21 linux-6.1.y 61adba85cc40 db5b7ff0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/13 01:05 linux-6.1.y 61adba85cc40 c35c26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/03/12 22:25 linux-6.1.y 61adba85cc40 c35c26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/02/24 04:28 linux-6.1.y 81e1dc2f7001 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/02/20 22:42 linux-6.1.y 8b4118fabd6e 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/02/16 00:56 linux-6.1.y f1bb70486c9c fd39cf6f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/02/07 11:20 linux-6.1.y f1bb70486c9c 6404acf9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/02/03 09:24 linux-6.1.y e5c3b988b827 60bf9982 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/01/24 03:10 linux-6.1.y 8fd7f4462453 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/01/17 11:53 linux-6.1.y fec3b1451d5f c9a1c95b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/01/17 00:03 linux-6.1.y fec3b1451d5f 2a7bcc7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/01/13 03:53 linux-6.1.y 7c58bfa711cb 551587c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2023/12/29 17:17 linux-6.1.y 4aa6747d9352 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dev_watchdog
2024/04/15 21:31 linux-6.1.y cd5d98c0556c b9af7e61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/25 21:45 linux-6.1.y d7543167affd 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/17 22:15 linux-6.1.y d7543167affd d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/16 21:39 linux-6.1.y d7543167affd d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/16 12:03 linux-6.1.y d7543167affd d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/15 22:06 linux-6.1.y d7543167affd d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/11 09:06 linux-6.1.y 61adba85cc40 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/10 21:03 linux-6.1.y 61adba85cc40 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/03/06 09:46 linux-6.1.y a3eb3a74aa8c f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/21 01:56 linux-6.1.y 8b4118fabd6e 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/19 02:20 linux-6.1.y 8b4118fabd6e 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/18 12:37 linux-6.1.y 8b4118fabd6e 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/11 15:18 linux-6.1.y f1bb70486c9c 77b23aa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/07 16:39 linux-6.1.y f1bb70486c9c 6404acf9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/02/05 13:13 linux-6.1.y e5c3b988b827 e23e8c20 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/24 16:30 linux-6.1.y 8fd7f4462453 1e153dc8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/23 14:56 linux-6.1.y 8fd7f4462453 1c0ecc51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/12 16:55 linux-6.1.y 7c58bfa711cb 551587c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/05 21:12 linux-6.1.y 38fb82ecd144 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/05 07:31 linux-6.1.y a507f147e6f0 28c42cff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/01 22:05 linux-6.1.y a507f147e6f0 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2024/01/01 16:56 linux-6.1.y a507f147e6f0 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2023/12/28 12:24 linux-6.1.y 4aa6747d9352 fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
2023/03/11 19:14 linux-6.1.y 11585e2f8b9d 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in dev_watchdog
* Struck through repros no longer work on HEAD.