rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (1 GPs behind) idle=97b/1/0x4000000000000002 softirq=6262/6263 fqs=5246 
	(detected by 0, t=10502 jiffies, g=6605, q=747)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4412 Comm: syz.3.42 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:migrate_enable+0xe1/0x200 kernel/sched/core.c:2189
Code: e6 e8 f3 d5 ff ff 4c 89 ff 4c 89 f6 ba 04 00 00 00 48 89 c1 4d 89 e0 e8 1d a2 01 00 42 0f b6 44 2d 00 84 c0 0f 85 cb 00 00 00 <66> c7 03 00 00 e8 f5 69 67 08 89 c3 83 f8 08 0f 83 d2 00 00 00 4c
RSP: 0018:ffffc90000dd0230 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888020ee5d78 RCX: ffffffff962d1f03
RDX: 0000000000000006 RSI: ffffffff8a2b3e80 RDI: ffff888020ee5d58
RBP: 1ffff110041dcbaf R08: ffffffff8d89e06f R09: 1ffffffff1b13c0d
R10: dffffc0000000000 R11: fffffbfff1b13c0e R12: 1ffff110041dce29
R13: dffffc0000000000 R14: ffff888020ee5d68 R15: ffff888020ee5940
FS:  00007f24970936c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 000000001ee1d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 BPF_PROG_RUN_ARRAY include/linux/bpf.h:1445 [inline]
 trace_call_bpf+0x503/0x5b0 kernel/trace/bpf_trace.c:127
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 c2 22 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000dd05a0 EFLAGS: 00000206
RAX: 8d3929eda4bdf600 RBX: 1ffff920001ba0b8 RCX: 8d3929eda4bdf600
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a79c980
RBP: ffffc90000dd0668 R08: ffffffff901cb18f R09: 1ffffffff2039631
R10: dffffc0000000000 R11: fffffbfff2039632 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 dev_queue_xmit_nit+0x9a9/0xae0 net/core/dev.c:2390
 xmit_one net/core/dev.c:3657 [inline]
 dev_hard_start_xmit+0x140/0x7d0 net/core/dev.c:3678
 sch_direct_xmit+0x24d/0x4a0 net/sched/sch_generic.c:345
 __dev_xmit_skb net/core/dev.c:3897 [inline]
 __dev_queue_xmit+0x1694/0x2e50 net/core/dev.c:4266
 lapb_data_transmit+0x86/0xa0 net/lapb/lapb_iface.c:447
 lapb_transmit_buffer+0x15f/0x1f0 net/lapb/lapb_out.c:149
 lapb_t1timer_expiry+0x65b/0xa50 net/lapb/lapb_timer.c:-1
 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:account_kernel_stack+0x22c/0x390 kernel/fork.c:388
Code: 85 e4 75 1c e8 b5 7f 31 00 48 83 fb 38 75 1d eb 29 e8 a8 7f 31 00 e8 83 63 72 08 4d 85 e4 74 e4 e8 99 7f 31 00 fb 48 83 fb 38 <74> 0e e8 8d 7f 31 00 48 83 c3 08 e9 ad fe ff ff e8 7f 7f 31 00 e9
RSP: 0018:ffffc9000126f6a0 EFLAGS: 00000297
RAX: ffffffff81477307 RBX: 0000000000000020 RCX: 0000000000080000
RDX: ffffc9000f345000 RSI: 000000000000c05c RDI: 000000000000c05d
RBP: ffffc9000126f7b0 R08: ffff8880b913b30b R09: 1ffff11017227661
R10: dffffc0000000000 R11: ffffed1017227662 R12: 0000000000000200
R13: 1ffff9200024ded8 R14: ffff8880752c0820 R15: 0000000000000000
 release_task_stack kernel/fork.c:433 [inline]
 put_task_stack+0x8f/0x140 kernel/fork.c:445
 finish_task_switch+0x26f/0x650 kernel/sched/core.c:4961
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11cb/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 freezable_schedule include/linux/freezer.h:172 [inline]
 futex_wait_queue_me+0x22b/0x440 kernel/futex/core.c:2863
 futex_wait+0x256/0x680 kernel/futex/core.c:2964
 do_futex+0xdc2/0x12b0 kernel/futex/core.c:3983
 __do_sys_futex kernel/futex/core.c:4060 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4041
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2498e5ae59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f24970930e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f24990d4098 RCX: 00007f2498e5ae59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f24990d4098
RBP: 00007f24990d4090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f24990d4128 R14: 00007ffdad7ce0c0 R15: 00007ffdad7ce1a8
 </TASK>