lec0: NETDEV WATCHDOG: CPU: 1: transmit queue 0 timed out 5010 ms
lec:lec_tx_timeout: lec0
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (2 ticks this GP) idle=d3cc/1/0x4000000000000000 softirq=131427/131427 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=104949, q=311 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 22790 Comm: syz.0.4188 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:enqueue_hrtimer+0xeb/0x3a0 kernel/time/hrtimer.c:1082
Code: 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 a8 ed 77 00 4d 8b 3e 49 83 c7 4c 4c 89 f8 48 c1 e8 03 42 0f b6 04 20 <84> c0 0f 85 01 01 00 00 41 0f b6 2f 89 ee 83 e6 10 31 ff e8 ed 2e
RSP: 0018:ffffc90000007d08 EFLAGS: 00000803
RAX: 0000000000000000 RBX: ffff88802f71e300 RCX: ffff888028b39e40
RDX: 0000000000010000 RSI: ffffffff8bbf08c0 RDI: ffffffff8bbf0880
RBP: 0000000000000001 R08: ffffffff8f7d0477 R09: 1ffffffff1efa08e
R10: dffffc0000000000 R11: fffffbfff1efa08f R12: dffffc0000000000
R13: 1ffff11017104f98 R14: ffff8880b8827cc0 R15: ffff8880b8827b0c
FS:  00007f4c1c75e6c0(0000) GS:ffff888126135000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e3247373d CR3: 000000003ae18000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1794 [inline]
 __hrtimer_run_queues+0x656/0xc60 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 5b 8b 7d f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 83 b9 45 f6 65 8b 05 dc 78 24 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000cb6ee20 EFLAGS: 00000206
RAX: 6d442c19f0f65400 RBX: 0000000000000a02 RCX: 6d442c19f0f65400
RDX: 0000000000000002 RSI: ffffffff8d711843 RDI: 0000000000000001
RBP: ffffc9000cb6eeb0 R08: ffffffff8f7d0477 R09: 1ffffffff1efa08e
R10: dffffc0000000000 R11: fffffbfff1efa08f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88802f71e2a8 R15: 1ffff9200196ddc4
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 taprio_change+0x302c/0x3c40 net/sched/sch_taprio.c:1986
 taprio_init+0x959/0xbd0 net/sched/sch_taprio.c:2126
 qdisc_create+0x7ac/0xea0 net/sched/sch_api.c:1319
 __tc_modify_qdisc net/sched/sch_api.c:1753 [inline]
 tc_modify_qdisc+0x1547/0x2020 net/sched/sch_api.c:1817
 rtnetlink_rcv_msg+0x77c/0xb70 net/core/rtnetlink.c:6967
 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x505/0x830 net/socket.c:2630
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684
 __sys_sendmsg net/socket.c:2716 [inline]
 __do_sys_sendmsg net/socket.c:2721 [inline]
 __se_sys_sendmsg net/socket.c:2719 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4c1b98f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4c1c75e038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4c1bbe5fa0 RCX: 00007f4c1b98f749
RDX: 0000000000000000 RSI: 00002000000007c0 RDI: 0000000000000005
RBP: 00007f4c1ba13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4c1bbe6038 R14: 00007f4c1bbe5fa0 R15: 00007ffe7e85fad8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g104949 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=46151
rcu: rcu_preempt kthread starved for 10502 jiffies! g104949 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7026
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>