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NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 14181 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 14181 Comm: syz.7.3708 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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:ffffc90000007af0 EFLAGS: 00010246
RAX: 2b72ebc2742bed00 RBX: ffff888078418448 RCX: ffff888060da0000
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000007627 R09: 1ffff92000000ec4
R10: dffffc0000000000 R11: fffff52000000ec5 R12: 0000000000000000
R13: ffff888078418540 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f46ee7956c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ab5842180 CR3: 0000000063027000 CR4: 00000000003506f0
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:preempt_count_sub+0x2a/0x160 kernel/sched/core.c:5536
Code: 55 53 48 bb 00 00 00 00 00 fc ff df 48 c7 c0 80 4f 2f 96 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 bd 00 00 00 83 3d 06 07 dd 14 00 <75> 25 65 8b 05 45 27 b0 7e 89 c1 81 e1 ff ff ff 7f 39 cf 7f 25 81
RSP: 0018:ffffc90003aaf1a0 EFLAGS: 00000246
RAX: 0000000000000004 RBX: dffffc0000000000 RCX: ffffffff962f4f03
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000001100cca R08: ffffea0001447d37 R09: ffffed100a23e800
R10: dffffc0000000000 R11: fffff94000288fa7 R12: 0000000000000001
R13: 1ffff1100c1b42f1 R14: ffff888060da1788 R15: dffffc0000000000
 __kunmap_atomic include/linux/highmem-internal.h:220 [inline]
 clear_highpage include/linux/highmem.h:182 [inline]
 kernel_init_free_pages+0x93/0xf0 mm/page_alloc.c:1278
 post_alloc_hook+0x106/0x220 mm/page_alloc.c:2416
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 alloc_pages_vma+0x2bc/0x790 mm/mempolicy.c:2146
 shmem_alloc_page mm/shmem.c:1586 [inline]
 shmem_alloc_and_acct_page+0x47f/0xbe0 mm/shmem.c:1611
 shmem_getpage_gfp+0x14be/0x2c10 mm/shmem.c:1906
 shmem_getpage mm/shmem.c:151 [inline]
 shmem_write_begin+0xcd/0x1a0 mm/shmem.c:2474
 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
 __generic_file_write_iter+0x261/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f46f04fd84e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f46ee794da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f46ee7956c0 RCX: 00007f46f04fd84e
RDX: 0000000001000000 RSI: 00007f46e6375000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f46ee794ee0 R14: 00007f46ee794ea0 R15: 00007f46e6375000
 </TASK>
----------------
Code disassembly (best guess):
   0:	55                   	push   %rbp
   1:	53                   	push   %rbx
   2:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
   9:	fc ff df
   c:	48 c7 c0 80 4f 2f 96 	mov    $0xffffffff962f4f80,%rax
  13:	48 c1 e8 03          	shr    $0x3,%rax
  17:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax
  1b:	84 c0                	test   %al,%al
  1d:	0f 85 bd 00 00 00    	jne    0xe0
  23:	83 3d 06 07 dd 14 00 	cmpl   $0x0,0x14dd0706(%rip)        # 0x14dd0730
* 2a:	75 25                	jne    0x51 <-- trapping instruction
  2c:	65 8b 05 45 27 b0 7e 	mov    %gs:0x7eb02745(%rip),%eax        # 0x7eb02778
  33:	89 c1                	mov    %eax,%ecx
  35:	81 e1 ff ff ff 7f    	and    $0x7fffffff,%ecx
  3b:	39 cf                	cmp    %ecx,%edi
  3d:	7f 25                	jg     0x64
  3f:	81                   	.byte 0x81