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NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 4230 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 1 PID: 4230 Comm: kworker/1:4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Code: 8d 51 06 01 48 8b 5c 24 20 48 89 df e8 6c cb e3 ff 48 c7 c7 40 5e 22 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 33 46 b1 01 <0f> 0b e9 51 fe ff ff e8 b7 3f 73 f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000dd0af0 EFLAGS: 00010246
RAX: 3db48d8761ff1d00 RBX: ffff88807677e448 RCX: ffff888029f25940
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffff8880b8f33d7f R09: 1ffff110171e67af
R10: dffffc0000000000 R11: ffffed10171e67b0 R12: 0000000000000000
R13: ffff88807677e540 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe48455000 CR3: 000000005f085000 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:rmqueue_pcplist mm/page_alloc.c:3711 [inline]
RIP: 0010:rmqueue mm/page_alloc.c:3742 [inline]
RIP: 0010:get_page_from_freelist+0x1f20/0x2670 mm/page_alloc.c:4189
Code: 8f 84 24 c0 01 00 00 f7 84 24 c0 01 00 00 00 02 00 00 c6 44 08 04 f8 0f 85 89 02 00 00 41 f7 c5 00 02 00 00 74 01 fb 4d 85 f6 <44> 8b 6c 24 2c 0f 84 d5 00 00 00 4c 89 f0 48 c1 e8 03 80 3c 08 00
RSP: 0018:ffffc900039ef500 EFLAGS: 00000286
RAX: 1ffff9200073ded4 RBX: ffffffff8be44828 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00
RBP: ffffc900039ef750 R08: ffffffff91015137 R09: 1ffffffff2202a26
R10: dffffc0000000000 R11: fffffbfff2202a27 R12: ffff88813fffd310
R13: 0000000000000202 R14: ffffea0001e2a400 R15: 0000000000102cc2
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 vm_area_alloc_pages mm/vmalloc.c:2876 [inline]
 __vmalloc_area_node mm/vmalloc.c:2932 [inline]
 __vmalloc_node_range+0x4b1/0x8b0 mm/vmalloc.c:3037
 __vmalloc_node mm/vmalloc.c:3087 [inline]
 vmalloc+0x75/0x80 mm/vmalloc.c:3120
 kcov_remote_start+0x2fa/0x5e0 kernel/kcov.c:890
 kcov_remote_start_usb include/linux/kcov.h:55 [inline]
 hub_event+0x153/0x5260 drivers/usb/core/hub.c:5822
 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:	8f 84 24 c0 01 00 00 	pop    0x1c0(%rsp)
   7:	f7 84 24 c0 01 00 00 	testl  $0x200,0x1c0(%rsp)
   e:	00 02 00 00
  12:	c6 44 08 04 f8       	movb   $0xf8,0x4(%rax,%rcx,1)
  17:	0f 85 89 02 00 00    	jne    0x2a6
  1d:	41 f7 c5 00 02 00 00 	test   $0x200,%r13d
  24:	74 01                	je     0x27
  26:	fb                   	sti
  27:	4d 85 f6             	test   %r14,%r14
* 2a:	44 8b 6c 24 2c       	mov    0x2c(%rsp),%r13d <-- trapping instruction
  2f:	0f 84 d5 00 00 00    	je     0x10a
  35:	4c 89 f0             	mov    %r14,%rax
  38:	48 c1 e8 03          	shr    $0x3,%rax
  3c:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)