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NETDEV WATCHDOG: usb0 (cdc_ether): transmit queue 0 timed out
WARNING: CPU: 0 PID: 4653 at net/sched/sch_generic.c:481 dev_watchdog+0x8d3/0xab0 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 4653 Comm: syz.1.67 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 4c c9 74 05 01 4c 8b 74 24 28 4c 89 f7 e8 e2 f6 e3 ff 48 c7 c7 80 3e 22 8b 4c 89 f6 48 89 c2 44 89 e1 e8 bd 67 b0 01 <0f> 0b e9 31 fe ff ff e8 e1 b2 77 f9 0f 0b e9 13 fe ff ff 44 89 e1
RSP: 0018:ffffc90000007b08 EFLAGS: 00010246
RAX: 81ef7bf3974cbc00 RBX: dffffc0000000000 RCX: ffff888026b91dc0
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: ffff888060a3c468 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: 0000000000000000
R13: ffff888078c04540 R14: ffff888078c04000 R15: dffffc0000000000
FS:  00007fa6ba6e76c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000034000 CR3: 000000005ff37000 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+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:console_unlock+0xcad/0x1120 kernel/printk/printk.c:2749
Code: 75 11 e8 d6 dc 18 00 4d 85 ff 75 16 e8 cc dc 18 00 eb 15 e8 c5 dc 18 00 e8 e0 81 5c 08 4d 85 ff 74 ea e8 b6 dc 18 00 fb 31 ff <89> de e8 0c e0 18 00 85 db 0f 94 c0 22 44 24 17 3c 01 75 1f e8 9a
RSP: 0018:ffffc9000325eea0 EFLAGS: 00000246
RAX: ffffffff816057da RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c1a1000 RSI: 0000000000005578 RDI: 0000000000000000
RBP: ffffc9000325f110 R08: ffffffff901d50c7 R09: 1ffffffff203aa18
R10: dffffc0000000000 R11: fffffbfff203aa19 R12: 1ffffffff198d72d
R13: 0000000000000054 R14: 0000000000000000 R15: 0000000000000200
 vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
 _printk+0xda/0x130 kernel/printk/printk.c:2299
 validate_nla lib/nlattr.c:401 [inline]
 __nla_validate_parse+0xd1e/0x2940 lib/nlattr.c:613
 __nla_parse+0x3c/0x50 lib/nlattr.c:710
 __nlmsg_parse include/net/netlink.h:744 [inline]
 genl_family_rcv_msg_attrs_parse+0x1c6/0x290 net/netlink/genetlink.c:540
 genl_family_rcv_msg_doit net/netlink/genetlink.c:709 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0xa7d/0xf90 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x1f5/0x440 net/netlink/af_netlink.c:2507
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x774/0x920 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ba/0xbe0 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x5b7/0x8f0 net/socket.c:2445
 ___sys_sendmsg+0x236/0x2e0 net/socket.c:2499
 __sys_sendmsg net/socket.c:2528 [inline]
 __do_sys_sendmsg net/socket.c:2537 [inline]
 __se_sys_sendmsg+0x1af/0x290 net/socket.c:2535
 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: 0033:0x7fa6bc48d819
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:00007fa6ba6e7028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa6bc706fa0 RCX: 00007fa6bc48d819
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007fa6bc523c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa6bc707038 R14: 00007fa6bc706fa0 R15: 00007ffeffd52408
 </TASK>
----------------
Code disassembly (best guess):
   0:	75 11                	jne    0x13
   2:	e8 d6 dc 18 00       	call   0x18dcdd
   7:	4d 85 ff             	test   %r15,%r15
   a:	75 16                	jne    0x22
   c:	e8 cc dc 18 00       	call   0x18dcdd
  11:	eb 15                	jmp    0x28
  13:	e8 c5 dc 18 00       	call   0x18dcdd
  18:	e8 e0 81 5c 08       	call   0x85c81fd
  1d:	4d 85 ff             	test   %r15,%r15
  20:	74 ea                	je     0xc
  22:	e8 b6 dc 18 00       	call   0x18dcdd
  27:	fb                   	sti
  28:	31 ff                	xor    %edi,%edi
* 2a:	89 de                	mov    %ebx,%esi <-- trapping instruction
  2c:	e8 0c e0 18 00       	call   0x18e03d
  31:	85 db                	test   %ebx,%ebx
  33:	0f 94 c0             	sete   %al
  36:	22 44 24 17          	and    0x17(%rsp),%al
  3a:	3c 01                	cmp    $0x1,%al
  3c:	75 1f                	jne    0x5d
  3e:	e8                   	.byte 0xe8
  3f:	9a                   	(bad)