------------[ cut here ]------------
NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 5102 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 5102 Comm: syz.1.195 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: 94 72 05 01 48 8b 5c 24 20 48 89 df e8 6c f2 e3 ff 48 c7 c7 40 4a 22 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 93 c2 b0 01 <0f> 0b e9 51 fe ff ff e8 57 48 74 f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000007af0 EFLAGS: 00010246
RAX: ed0224e95058da00 RBX: ffff8880201d0448 RCX: ffff88802c0bbb80
RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000007627 R09: 1ffff92000000ec4
R10: dffffc0000000000 R11: fffff52000000ec5 R12: 0000000000000000
R13: ffff8880201d0540 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f7fe62366c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7fe6235ff8 CR3: 000000005fd21000 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:memset+0x1/0x40 mm/kasan/shadow.c:43
Code: 07 31 ed eb d7 00 00 cc cc 89 f6 48 8b 0c 24 31 d2 e9 43 ef ff ff 0f 1f 00 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 30 ef ff ff 55 <41> 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00
RSP: 0018:ffffc9000365f8f0 EFLAGS: 00000246
RAX: ffffffff87ddcf12 RBX: ffffc9000365fd40 RCX: ffff88802c0bbb80
RDX: 0000000000000080 RSI: 0000000000000000 RDI: ffffc9000365f9a0
RBP: ffffc9000365fa90 R08: 0000000000000002 R09: 00000000000011c5
R10: dffffc0000000000 R11: fffff520006cbfac R12: dffffc0000000000
R13: 0000000000000002 R14: 1ffff920006cbf30 R15: ffffc9000365f9a0
 ____sys_recvmsg+0xe8/0x5b0 net/socket.c:2647
 ___sys_recvmsg+0x213/0x5c0 net/socket.c:2707
 do_recvmmsg+0x360/0x7f0 net/socket.c:2801
 __sys_recvmmsg net/socket.c:2880 [inline]
 __do_sys_recvmmsg net/socket.c:2903 [inline]
 __se_sys_recvmmsg net/socket.c:2896 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2896
 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: 0033:0x7f7fe7fff159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7fe6236028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f7fe8287090 RCX: 00007f7fe7fff159
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f7fe809603b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7fe8287128 R14: 00007f7fe8287090 R15: 00007ffc82f27888
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	31 ed                	xor    %ebp,%ebp
   2:	eb d7                	jmp    0xffffffdb
   4:	00 00                	add    %al,(%rax)
   6:	cc                   	int3
   7:	cc                   	int3
   8:	89 f6                	mov    %esi,%esi
   a:	48 8b 0c 24          	mov    (%rsp),%rcx
   e:	31 d2                	xor    %edx,%edx
  10:	e9 43 ef ff ff       	jmp    0xffffef58
  15:	0f 1f 00             	nopl   (%rax)
  18:	89 f6                	mov    %esi,%esi
  1a:	48 8b 0c 24          	mov    (%rsp),%rcx
  1e:	ba 01 00 00 00       	mov    $0x1,%edx
  23:	e9 30 ef ff ff       	jmp    0xffffef58
  28:	55                   	push   %rbp
* 29:	41 56                	push   %r14 <-- trapping instruction
  2b:	53                   	push   %rbx
  2c:	48 89 d3             	mov    %rdx,%rbx
  2f:	89 f5                	mov    %esi,%ebp
  31:	49 89 fe             	mov    %rdi,%r14
  34:	48 8b 4c 24 18       	mov    0x18(%rsp),%rcx
  39:	48 89 d6             	mov    %rdx,%rsi
  3c:	ba                   	.byte 0xba
  3d:	01 00                	add    %eax,(%rax)