lec0: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 6060 ms
lec:lec_tx_timeout: lec0
lec:lec_start_xmit: lec0:No lecd attached
lec0: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 6060 ms
lec:lec_tx_timeout: lec0
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10567 jiffies, g=39941, q=271 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10565 (4294973126-4294962561), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10565 jiffies! g39941 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R  running task     stack:26248 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x149b/0x4fd0 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 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+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 22 Comm: migration/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Stopper: 0x0 <- 0x0
RIP: 0010:bpf_prog_6fd842a53d323cc5+0x53/0x5f
Code: 00 00 48 b8 00 00 00 00 ff ff ff 80 4c 8b 55 f0 4d 85 d2 74 1b 49 83 ea 01 4d 85 d2 75 0c 49 c7 c2 f0 ff ff ff e8 75 10 62 e1 <4c> 89 55 f0 eb d2 c9 e9 29 01 3c eb cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90000a08a40 EFLAGS: 00000002
RAX: 80ffffff00000000 RBX: 1ffff110038dcaaa RCX: dffffc0000000000
RDX: 0000000000010000 RSI: ffffc90003889060 RDI: ffffc90000a08ae0
RBP: ffffc90000a08a50 R08: ffffffff81ccfb31 R09: ffffffff8df41aa0
R10: 0000000000000b29 R11: ffffffff8168c760 R12: ffffc90003889048
R13: ffffc90000a08ae0 R14: ffff88801c6e5550 R15: ffffc90003889060
FS:  0000000000000000(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c2c0 CR3: 0000000033a44000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 bpf_dispatcher_nop_func include/linux/bpf.h:1378 [inline]
 __bpf_prog_run include/linux/filter.h:723 [inline]
 bpf_prog_run include/linux/filter.h:730 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2075 [inline]
 bpf_trace_run1+0x27f/0x4c0 kernel/trace/bpf_trace.c:2115
 __bpf_trace_rcu_utilization+0xa1/0xf0 include/trace/events/rcu.h:27
 __do_trace_rcu_utilization include/trace/events/rcu.h:27 [inline]
 trace_rcu_utilization+0x191/0x1c0 include/trace/events/rcu.h:27
 update_process_times+0x23c/0x2f0 kernel/time/timer.c:2474
 tick_sched_handle kernel/time/tick-sched.c:298 [inline]
 tick_nohz_handler+0x3e9/0x710 kernel/time/tick-sched.c:319
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x4d0/0xc30 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1045 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x3e0 arch/x86/kernel/apic/apic.c:1062
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:raw_spin_rq_unlock_irq+0x13/0x90 kernel/sched/sched.h:1571
Code: cc e8 11 d4 c6 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 53 66 90 e8 54 6b c9 09 e8 3f 03 36 00 fb 5b <41> 5e 41 5f c3 cc cc cc cc cc f3 0f 1e fa 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900001c7aa8 EFLAGS: 00000206
RAX: 000000000000144b RBX: ffff8880b873a900 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8d792055 RDI: ffffffff8bc083e0
RBP: ffffc900001c7cb8 R08: ffffffff8f822277 R09: 1ffffffff1f0444e
R10: dffffc0000000000 R11: fffffbfff1f0444f R12: dffffc0000000000
R13: ffff88801c6e3d00 R14: ffff8880b873b470 R15: 1ffff110170e7680
 __schedule+0x19a6/0x4fd0 kernel/sched/core.c:6871
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 smpboot_thread_fn+0x5bd/0xa60 kernel/smpboot.c:156
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
lec:lec_start_xmit: lec0:No lecd attached
lec0: NETDEV WATCHDOG: CPU: 0: transmit queue 0 timed out 6060 ms
lec:lec_tx_timeout: lec0