------------[ cut here ]------------
NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 7221 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 1 PID: 7221 Comm: kworker/1:10 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: rcu_gp process_srcu
RIP: 0010:dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Code: 8f 72 05 01 48 8b 5c 24 20 48 89 df e8 5c f2 e3 ff 48 c7 c7 c0 46 22 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 03 62 b0 01 <0f> 0b e9 51 fe ff ff e8 d7 34 74 f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000dd0af0 EFLAGS: 00010246
RAX: dec4faff54518400 RBX: ffff88807de2c448 RCX: ffff8880797d8000
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000dd0627 R09: 1ffff920001ba0c4
R10: dffffc0000000000 R11: fffff520001ba0c5 R12: 0000000000000000
R13: ffff88807de2c540 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d02e3c6c8 CR3: 0000000058ece000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:queue_delayed_work_on+0x1a7/0x1f0 kernel/workqueue.c:1720
Code: 4d 85 ed 75 16 e8 79 13 2b 00 eb 15 e8 72 13 2b 00 e8 4d 2b 72 08 4d 85 ed 74 ea e8 63 13 2b 00 fb 48 c7 44 24 20 0e 36 e0 45 <48> b8 00 00 00 00 00 fc ff df 49 c7 04 06 00 00 00 00 41 c7 44 06
RSP: 0018:ffffc9000364fb60 EFLAGS: 00000293
RAX: ffffffff814de94d RBX: 0000000000000000 RCX: ffff8880797d8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000364fc30 R08: ffffffff901ee0d7 R09: 1ffffffff203dc1a
R10: dffffc0000000000 R11: fffffbfff203dc1b R12: ffff8880b913fc01
R13: 0000000000000200 R14: 1ffff920006c9f70 R15: 0000000000000000
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess):
   0:	4d 85 ed             	test   %r13,%r13
   3:	75 16                	jne    0x1b
   5:	e8 79 13 2b 00       	call   0x2b1383
   a:	eb 15                	jmp    0x21
   c:	e8 72 13 2b 00       	call   0x2b1383
  11:	e8 4d 2b 72 08       	call   0x8722b63
  16:	4d 85 ed             	test   %r13,%r13
  19:	74 ea                	je     0x5
  1b:	e8 63 13 2b 00       	call   0x2b1383
  20:	fb                   	sti
  21:	48 c7 44 24 20 0e 36 	movq   $0x45e0360e,0x20(%rsp)
  28:	e0 45
* 2a:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax <-- trapping instruction
  31:	fc ff df
  34:	49 c7 04 06 00 00 00 	movq   $0x0,(%r14,%rax,1)
  3b:	00
  3c:	41                   	rex.B
  3d:	c7                   	.byte 0xc7
  3e:	44 06                	rex.R (bad)