WARNING in dev_watchdog (2)

WARNING in dev_watchdog (2)
Status: upstream: reported on 2020/03/30 07:12
Reported-by: syzbot+d55372214aff0faa1f1f@syzkaller.appspotmail.com
First crash: 729d, last: 6h36m

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in dev_watchdog				25	1532d	1557d	0/22	closed as invalid on 2017/10/22 12:45

Sample crash report:

------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out
WARNING: CPU: 2 PID: 7760 at net/sched/sch_generic.c:477 dev_watchdog+0xb65/0xd50 net/sched/sch_generic.c:477
Modules linked in:
CPU: 2 PID: 7760 Comm: syz-executor.1 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:dev_watchdog+0xb65/0xd50 net/sched/sch_generic.c:477
Code: 2e fa 48 8b 5c 24 28 c6 05 93 2d 34 06 01 48 89 df e8 bf ee e4 ff 89 e9 48 89 de 48 c7 c7 c0 7d b0 8a 48 89 c2 e8 6f 28 b8 01 <0f> 0b e9 18 fd ff ff 48 8b 7c 24 20 e8 ca c6 74 fa e9 4d f6 ff ff
RSP: 0018:ffffc90000780cc0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88806e5ba000 RCX: 0000000000000000
RDX: ffff888018d1c2c0 RSI: ffffffff815e40a8 RDI: fffff520000f018a
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff815dde4e R11: 0000000000000000 R12: 0000000000000001
R13: ffff888018473c00 R14: fffffbfff1701e30 R15: ffff88806e5ba548
FS:  00007f4cdacdc700(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000350 CR3: 00000000638a5000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
 __run_timers kernel/time/timer.c:1715 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:tomoyo_check_acl+0xb0/0x450 security/tomoyo/domain.c:173
Code: 03 00 00 49 8b 5d 00 49 39 dd 0f 84 fa 01 00 00 e8 f5 2c ce fd 48 8d 7b 18 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 <38> d0 7f 08 84 c0 0f 85 f7 02 00 00 44 0f b6 73 18 31 ff 44 89 f6
RSP: 0018:ffffc90002baf760 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888013d2cd80 RCX: ffffc9000f7d9000
RDX: 0000000000000000 RSI: ffffffff83a8a5eb RDI: ffff888013d2cd98
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff83a8a671 R11: 0000000000000002 R12: ffffc90002baf858
R13: ffff88801c143610 R14: 0000000000000002 R15: 0000000000000000
 tomoyo_path_permission security/tomoyo/file.c:586 [inline]
 tomoyo_path_permission+0x1ff/0x3a0 security/tomoyo/file.c:573
 tomoyo_check_open_permission+0x33e/0x380 security/tomoyo/file.c:777
 tomoyo_file_open security/tomoyo/tomoyo.c:311 [inline]
 tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:306
 security_file_open+0x45/0xb0 security/security.c:1635
 do_dentry_open+0x353/0x1250 fs/open.c:809
 do_open fs/namei.c:3426 [inline]
 path_openat+0x1cad/0x2750 fs/namei.c:3559
 do_filp_open+0x1aa/0x400 fs/namei.c:3586
 do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_sys_open fs/open.c:1236 [inline]
 __se_sys_open fs/open.c:1232 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4cdd766ae9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4cdacdc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f4cdd879f60 RCX: 00007f4cdd766ae9
RDX: 0000000000000000 RSI: 00000000001ada42 RDI: 0000000020000000
RBP: 00007f4cdd7c0f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff65594eaf R14: 00007f4cdacdc300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 00                	add    (%rax),%eax
   2:	00 49 8b             	add    %cl,-0x75(%rcx)
   5:	5d                   	pop    %rbp
   6:	00 49 39             	add    %cl,0x39(%rcx)
   9:	dd 0f                	fisttpll (%rdi)
   b:	84 fa                	test   %bh,%dl
   d:	01 00                	add    %eax,(%rax)
   f:	00 e8                	add    %ch,%al
  11:	f5                   	cmc
  12:	2c ce                	sub    $0xce,%al
  14:	fd                   	std
  15:	48 8d 7b 18          	lea    0x18(%rbx),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 89 fa             	mov    %rdi,%rdx
  1f:	48 c1 e8 03          	shr    $0x3,%rax
  23:	83 e2 07             	and    $0x7,%edx
  26:	0f b6 04 28          	movzbl (%rax,%rbp,1),%eax
* 2a:	38 d0                	cmp    %dl,%al <-- trapping instruction
  2c:	7f 08                	jg     0x36
  2e:	84 c0                	test   %al,%al
  30:	0f 85 f7 02 00 00    	jne    0x32d
  36:	44 0f b6 73 18       	movzbl 0x18(%rbx),%r14d
  3b:	31 ff                	xor    %edi,%edi
  3d:	44 89 f6             	mov    %r14d,%esi

Crashes (4663):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-qemu-upstream	2021/11/27 17:11	upstream	c5c17547b778	63eeac02	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/26 22:23	upstream	a4849f6000e2	63eeac02	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/24 18:00	upstream	5d9f4cf36721	545ab074	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/22 00:54	upstream	136057256686	4eb20a4e	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/21 06:48	upstream	61564e7b3abc	4eb20a4e	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/19 19:31	upstream	4c388a8e740d	3a9d0024	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/18 20:47	upstream	42eb8fdac2fc	31a30fc0	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/14 13:02	upstream	c8c109546a19	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/14 02:59	upstream	ccfff0a2bd2a	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/11 17:23	upstream	debe436e77c7	75b04091	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/09 05:16	upstream	e851dfae4371	8ab17e57	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/08 09:49	upstream	6b75d88fa81b	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/07 13:50	upstream	b5013d084e03	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/07 04:17	upstream	512b7931ad05	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/06 15:38	upstream	fe91c4725aee	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/05 00:52	upstream	7ddb58cb0eca	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/04 07:52	upstream	ce840177930f	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/11/01 11:19	upstream	8bb7eca972ad	098b5d53	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2021/10/31 21:11	upstream	180eca540ae0	098b5d53	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/26 12:18	upstream	b501b85957de	63eeac02	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/23 14:54	upstream	136057256686	545ab074	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/20 10:59	upstream	9539ba4308ad	4eb20a4e	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/19 07:01	upstream	4c388a8e740d	31a30fc0	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/18 07:24	upstream	ee1703cda8dc	cafff8b6	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/17 11:16	upstream	8ab774587903	cafff8b6	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/15 17:23	upstream	8ab774587903	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/15 05:56	upstream	fa55b7dcdc43	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/14 05:18	upstream	ccfff0a2bd2a	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/14 05:11	upstream	ccfff0a2bd2a	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/13 15:08	upstream	66f4beaa6c1d	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/12 18:09	upstream	5833291ab6de	83f5c9b5	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/11 03:03	upstream	89d714ab6043	75b04091	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/10 04:49	upstream	cb690f5238d7	55fa030c	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/08 07:13	upstream	6b75d88fa81b	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/08 03:56	upstream	6b75d88fa81b	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/05 16:13	upstream	d4439a1189f9	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/04 21:32	upstream	7ddb58cb0eca	4c1be0be	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/03 05:19	upstream	bfc484fe6abb	17f3edd2	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/02 15:51	upstream	bfc484fe6abb	098b5d53	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/11/02 09:47	upstream	e66435936756	098b5d53	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream-386	2021/10/31 23:20	upstream	180eca540ae0	098b5d53	.config	log	report	info	WARNING in dev_watchdog
ci-qemu2-arm32	2021/04/09 12:43	upstream	bf152b0b41dc	6a81331a	.config	log	report	info	WARNING in dev_watchdog
ci2-upstream-usb	2021/11/20 13:35	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4616dddcfaf7	4eb20a4e	.config	log	report	info	WARNING in dev_watchdog
ci2-upstream-usb	2021/11/19 10:24	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4616dddcfaf7	31a30fc0	.config	log	report	info	WARNING in dev_watchdog
ci2-upstream-usb	2021/11/19 00:20	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4616dddcfaf7	31a30fc0	.config	log	report	info	WARNING in dev_watchdog
ci2-upstream-usb	2021/11/18 12:04	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4616dddcfaf7	cafff8b6	.config	log	report	info	WARNING in dev_watchdog
ci2-upstream-usb	2021/11/09 14:56	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	048ff8629e11	59bcaf9a	.config	log	report	info	WARNING in dev_watchdog
ci-qemu-upstream	2019/12/03 08:49	upstream	76bb8b05960c	ab342da3	.config	log	report
ci-qemu-upstream	2019/11/29 10:36	upstream	81b6b96475ac	4f7e1d0f	.config	log	report
ci-qemu-upstream-386	2021/01/17 07:08	upstream	0da0a8a0a0e1	65a7a854	.config	log	report	info