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NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 6088 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 6088 Comm: syz.2.681 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Code: 77 4c 06 01 48 8b 5c 24 20 48 89 df e8 9c ca e3 ff 48 c7 c7 c0 68 23 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 83 96 b1 01 <0f> 0b e9 51 fe ff ff e8 37 3a 6c f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000007af0 EFLAGS: 00010246
RAX: 1c331626e7325100 RBX: ffff8880207f8448 RCX: ffff88807bfc9dc0
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000007627 R09: 1ffff92000000ec4
R10: dffffc0000000000 R11: fffff52000000ec5 R12: 0000000000000000
R13: ffff8880207f8540 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32b1eff8 CR3: 0000000062461000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline]
RIP: 0010:need_resched include/linux/sched.h:2126 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1351 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1505 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1534 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1555 [inline]
RIP: 0010:unmap_page_range+0x9a4/0x2410 mm/memory.c:1576
Code: 83 e0 9f 0f 84 ff 00 00 00 48 89 5c 24 18 65 48 8b 1d f0 c1 54 7e 48 89 df be 08 00 00 00 e8 73 c9 10 00 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 cd c7 10 00 49 8d 87 00 f0 ff ff
RSP: 0018:ffffc9000340f520 EFLAGS: 00000a06
RAX: 1ffff1100f7f93b8 RBX: ffff88807bfc9dc0 RCX: ffffffff81adaddd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807bfc9dc0
RBP: ffffc9000340f690 R08: ffff88807bfc9dc7 R09: 1ffff1100f7f93b8
R10: dffffc0000000000 R11: ffffed100f7f93b9 R12: dffffc0000000000
R13: 800000006612b007 R14: 1ffff1100b5dfcf6 R15: 00007f7ddf8f7000
unmap_vmas+0x131/0x250 mm/memory.c:1653
exit_mmap+0x3b9/0x640 mm/mmap.c:3224
__mmput+0x115/0x390 kernel/fork.c:1136
exit_mm+0x632/0x7b0 kernel/exit.c:557
do_exit+0x5b8/0x2100 kernel/exit.c:877
do_group_exit+0x12c/0x2f0 kernel/exit.c:1004
get_signal+0x7eb/0x12e0 kernel/signal.c:2917
arch_do_signal_or_restart+0xe6/0x12a0 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:157 [inline]
exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:217
__syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:310
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7de04a5b19
Code: Unable to access opcode bytes at RIP 0x7f7de04a5aef.
RSP: 002b:00007f7dde6fc0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f7de072bfa8 RCX: 00007f7de04a5b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7de072bfa8
RBP: 00007f7de072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7de072c038 R14: 00007fff3e39fd60 R15: 00007fff3e39fe48
----------------
Code disassembly (best guess):
0: 83 e0 9f and $0xffffff9f,%eax
3: 0f 84 ff 00 00 00 je 0x108
9: 48 89 5c 24 18 mov %rbx,0x18(%rsp)
e: 65 48 8b 1d f0 c1 54 mov %gs:0x7e54c1f0(%rip),%rbx # 0x7e54c206
15: 7e
16: 48 89 df mov %rbx,%rdi
19: be 08 00 00 00 mov $0x8,%esi
1e: e8 73 c9 10 00 call 0x10c996
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 cd c7 10 00 call 0x10c806
39: 49 8d 87 00 f0 ff ff lea -0x1000(%r15),%rax