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NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 8783 at net/sched/sch_generic.c:481 dev_watchdog+0x8d3/0xab0 net/sched/sch_generic.c:480
Modules linked in:
CPU: 1 PID: 8783 Comm: syz.4.1100 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:dev_watchdog+0x8d3/0xab0 net/sched/sch_generic.c:480
Code: f9 c6 05 4b f7 74 05 01 4c 8b 74 24 28 4c 89 f7 e8 32 f7 e3 ff 48 c7 c7 00 30 22 8b 4c 89 f6 48 89 c2 44 89 e1 e8 7d 32 b0 01 <0f> 0b e9 31 fe ff ff e8 21 da 77 f9 0f 0b e9 13 fe ff ff 44 89 e1
RSP: 0018:ffffc90000dd0b08 EFLAGS: 00010246
RAX: 5efa88d03aa49a00 RBX: dffffc0000000000 RCX: ffff888017fc5940
RDX: 0000000000000100 RSI: 0000000080000102 RDI: 0000000000000000
RBP: ffff88807ecd0868 R08: ffffc90000dd0627 R09: 1ffff920001ba0c4
R10: dffffc0000000000 R11: fffff520001ba0c5 R12: 0000000000000000
R13: ffff88807b722540 R14: ffff88807b722000 R15: dffffc0000000000
FS:  00007fc41acd26c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003000 CR3: 0000000050e40000 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+0x53e/0x800 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x339/0x830 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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 00 00 00 66 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 be a9 97 f7 48 89 df e8 f6 81 98 f7 e8 61 74 b9 f7 fb bf 01 00 00 00 <e8> a6 89 8c f7 65 8b 05 47 97 3c 76 85 c0 74 02 5b c3 e8 94 a4 3a
RSP: 0018:ffffc9000322fab0 EFLAGS: 00000282
RAX: 5efa88d03aa49a00 RBX: ffff88805f4b4850 RCX: 5efa88d03aa49a00
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: 0000000000000001
RBP: ffffc9000322fc78 R08: ffff88805f4b4853 R09: 1ffff1100be9690a
R10: dffffc0000000000 R11: ffffed100be9690b R12: 1ffff92000645f6c
R13: ffff88805f4b4830 R14: dffffc0000000000 R15: ffff888017fc5940
 spin_unlock_irq include/linux/spinlock.h:414 [inline]
 snd_rawmidi_write+0x3ac/0xc10 sound/core/rawmidi.c:1541
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x3e4/0x7b0 fs/read_write.c:857
 vfs_writev fs/read_write.c:928 [inline]
 do_writev+0x281/0x480 fs/read_write.c:971
 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: 0033:0x7fc41ca78819
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:00007fc41acd2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fc41ccf1fa0 RCX: 00007fc41ca78819
RDX: 0000000000000002 RSI: 0000200000000840 RDI: 0000000000000008
RBP: 00007fc41cb0ec91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc41ccf2038 R14: 00007fc41ccf1fa0 R15: 00007ffd7d056218
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 66 90             	add    %ah,-0x70(%rsi)
   5:	53                   	push   %rbx
   6:	48 89 fb             	mov    %rdi,%rbx
   9:	48 83 c7 18          	add    $0x18,%rdi
   d:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  12:	e8 be a9 97 f7       	call   0xf797a9d5
  17:	48 89 df             	mov    %rbx,%rdi
  1a:	e8 f6 81 98 f7       	call   0xf7988215
  1f:	e8 61 74 b9 f7       	call   0xf7b97485
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 a6 89 8c f7       	call   0xf78c89d5 <-- trapping instruction
  2f:	65 8b 05 47 97 3c 76 	mov    %gs:0x763c9747(%rip),%eax        # 0x763c977d
  36:	85 c0                	test   %eax,%eax
  38:	74 02                	je     0x3c
  3a:	5b                   	pop    %rbx
  3b:	c3                   	ret
  3c:	e8                   	.byte 0xe8
  3d:	94                   	xchg   %eax,%esp
  3e:	a4                   	movsb  %ds:(%rsi),%es:(%rdi)
  3f:	3a                   	.byte 0x3a