------------[ cut here ]------------ NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out WARNING: CPU: 0 PID: 3714 at net/sched/sch_generic.c:478 dev_watchdog+0x93c/0xb10 net/sched/sch_generic.c:477 Modules linked in: CPU: 0 PID: 3714 Comm: syz-fuzzer Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:dev_watchdog+0x93c/0xb10 net/sched/sch_generic.c:477 Code: 05 8c 90 7b 05 01 48 8b 5c 24 28 48 89 df e8 3b c6 e2 ff 48 c7 c7 40 c3 7c 8b 48 89 de 48 89 c2 48 8b 4c 24 10 e8 e4 80 f6 f8 <0f> 0b e9 fe fc ff ff e8 88 d8 2a f9 0f 0b e9 83 fc ff ff 44 89 e1 RSP: 0018:ffffc90000007b10 EFLAGS: 00010246 RAX: a8dc6b3fd37d0500 RBX: ffff888058374000 RCX: ffff88801c698000 RDX: 0000000000000101 RSI: 0000000000000101 RDI: 0000000000000000 RBP: 00000000ffffde01 R08: ffffffff8166860c R09: fffffbfff1f7ee31 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888058374448 R13: ffff888058374440 R14: ffff888058374540 R15: ffff888058374460 FS: 000000c000ec2490(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00076c7b4 CR3: 00000000705c4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x16c/0x1f0 kernel/softirq.c:390 Code: 8a e8 d8 62 d0 08 65 66 8b 05 50 19 b6 7e 66 85 c0 75 57 bf 01 00 00 00 e8 31 e2 09 00 e8 fc 5c 39 00 fb 65 8b 05 fc ef b4 7e <85> c0 75 05 e8 6b 0e b3 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c RSP: 0018:ffffc90002e97a80 EFLAGS: 00000282 RAX: 0000000080000000 RBX: 1ffff920005d2f54 RCX: ffffffff81631938 RDX: dffffc0000000000 RSI: ffffffff8a8b2980 RDI: ffffffff8ad8f600 RBP: ffffc90002e97b28 R08: dffffc0000000000 R09: fffffbfff1f7ee30 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920005d2f58 R14: ffffc90002e97ac0 R15: 0000000000000201 lock_sock include/net/sock.h:1668 [inline] tcp_sendmsg+0x1e/0x40 net/ipv4/tcp.c:1455 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] sock_write_iter+0x39b/0x530 net/socket.c:1079 call_write_iter include/linux/fs.h:2172 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacf/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x40720e Code: 48 83 ec 38 e8 13 00 00 00 48 83 c4 38 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48 RSP: 002b:000000c002fe4da0 EFLAGS: 00000212 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000040720e RDX: 00000000000000f0 RSI: 000000c0001a07a0 RDI: 0000000000000003 RBP: 000000c002fe4de0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 000000c002fe4f20 R13: 0000000000000001 R14: 000000c0000061a0 R15: 000000000000000d ---------------- Code disassembly (best guess): 0: 8a e8 mov %al,%ch 2: d8 62 d0 fsubs -0x30(%rdx) 5: 08 65 66 or %ah,0x66(%rbp) 8: 8b 05 50 19 b6 7e mov 0x7eb61950(%rip),%eax # 0x7eb6195e e: 66 85 c0 test %ax,%ax 11: 75 57 jne 0x6a 13: bf 01 00 00 00 mov $0x1,%edi 18: e8 31 e2 09 00 call 0x9e24e 1d: e8 fc 5c 39 00 call 0x395d1e 22: fb sti 23: 65 8b 05 fc ef b4 7e mov %gs:0x7eb4effc(%rip),%eax # 0x7eb4f026 * 2a: 85 c0 test %eax,%eax <-- trapping instruction 2c: 75 05 jne 0x33 2e: e8 6b 0e b3 ff call 0xffb30e9e 33: 48 c7 44 24 20 0e 36 movq $0x45e0360e,0x20(%rsp) 3a: e0 45 3c: 49 rex.WB 3d: c7 .byte 0xc7 3e: 04 1c add $0x1c,%al