------------[ cut here ]------------
NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 17924 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 17924 Comm: syz.1.4915 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: ad 72 05 01 48 8b 5c 24 20 48 89 df e8 6c f2 e3 ff 48 c7 c7 40 44 22 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 03 b0 b0 01 <0f> 0b e9 51 fe ff ff e8 c7 55 74 f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0000:ffffc90000007af0 EFLAGS: 00010246
RAX: 3c32e88b3cae3000 RBX: ffff888061718448 RCX: ffff888020853b80
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000007627 R09: 1ffff92000000ec4
R10: dffffc0000000000 R11: fffff52000000ec5 R12: 0000000000000000
R13: ffff888061718540 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3281eff8 CR3: 000000000c08e000 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:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:216
Code: 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 48 8d 7e 01 8b 89 14 16 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a <c3> 0f 1f 80 00 00 00 00 48 8b 04 24 65 48 8b 0d b4 6f 89 7e 65 8b
RSP: 0000:ffffc900045ef4c0 EFLAGS: 00000293
RAX: ffffffff81b1ea82 RBX: 0000000000000000 RCX: ffff888020853b80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0001983e40
RBP: 0000000000000000 R08: ffffea0001983e47 R09: 1ffffd40003307c8
R10: dffffc0000000000 R11: fffff940003307c9 R12: dffffc0000000000
R13: ffffea0001983e40 R14: dffffc0000000000 R15: 1ffffd40003307c9
 page_remove_rmap+0x22/0x10f0 mm/rmap.c:1350
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xee4/0x2410 mm/memory.c:1576
 unmap_vmas+0x131/0x250 mm/memory.c:1653
 exit_mmap+0x3b9/0x640 mm/mmap.c:3216
 __mmput+0x115/0x390 kernel/fork.c:1133
 exit_mm+0x632/0x7b0 kernel/exit.c:557
 do_exit+0x5b8/0x2110 kernel/exit.c:877
 do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
 get_signal+0x7eb/0x12e0 kernel/signal.c:2909
 arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4ea94ef0d9
Code: Unable to access opcode bytes at RIP 0x7f4ea94ef0af.
RSP: 002b:00007f4ea7747028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: 0000000003eb0000 RBX: 00007f4ea9776fa0 RCX: 00007f4ea94ef0d9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 00007f4ea9586024 R08: 0000000000000000 R09: 0000000000000000
R10: 00000001002000ff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4ea9777038 R14: 00007f4ea9776fa0 R15: 00007ffec57c3cb8
 </TASK>
----------------
Code disassembly (best guess):
   0:	10 16                	adc    %dl,(%rsi)
   2:	00 00                	add    %al,(%rax)
   4:	83 fa 02             	cmp    $0x2,%edx
   7:	75 21                	jne    0x2a
   9:	48 8b 91 18 16 00 00 	mov    0x1618(%rcx),%rdx
  10:	48 8b 32             	mov    (%rdx),%rsi
  13:	48 8d 7e 01          	lea    0x1(%rsi),%rdi
  17:	8b 89 14 16 00 00    	mov    0x1614(%rcx),%ecx
  1d:	48 39 cf             	cmp    %rcx,%rdi
  20:	73 08                	jae    0x2a
  22:	48 89 44 f2 08       	mov    %rax,0x8(%rdx,%rsi,8)
  27:	48 89 3a             	mov    %rdi,(%rdx)
* 2a:	c3                   	ret <-- trapping instruction
  2b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  32:	48 8b 04 24          	mov    (%rsp),%rax
  36:	65 48 8b 0d b4 6f 89 	mov    %gs:0x7e896fb4(%rip),%rcx        # 0x7e896ff2
  3d:	7e
  3e:	65                   	gs
  3f:	8b                   	.byte 0x8b