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NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 4598 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 0 PID: 4598 Comm: kworker/u4:7 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: netns cleanup_net
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:ffffc90000007bb0 EFLAGS: 00010246
RAX: a347eac0d3a4bd00 RBX: ffff888023e84448 RCX: ffff88807a1c3b80
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc900000076e7 R09: 1ffff92000000edc
R10: dffffc0000000000 R11: fffff52000000edd R12: 0000000000000000
R13: ffff888023e84540 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23020ac6c8 CR3: 0000000056d46000 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+0x142/0x210 kernel/softirq.c:477
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:401
 spin_unlock_bh include/linux/spinlock.h:409 [inline]
 addrconf_ifdown+0x610/0x19f0 net/ipv6/addrconf.c:3847
 addrconf_notify+0x445/0xf20 net/ipv6/addrconf.c:-1
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
 call_netdevice_notifiers_extack net/core/dev.c:2074 [inline]
 call_netdevice_notifiers net/core/dev.c:2088 [inline]
 dev_close_many+0x29c/0x400 net/core/dev.c:1663
 unregister_netdevice_many+0x4b8/0x1a40 net/core/dev.c:11137
 default_device_exit_batch+0x364/0x3c0 net/core/dev.c:11694
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x78e/0xba0 net/core/net_namespace.c:635
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>