rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10501 ticks this GP) idle=910c/1/0x4000000000000000 softirq=21617/871877 fqs=5238
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  3432320     425943            0
rcu: 	cputime:     2086      49552          839   ==> 52520(ms)
rcu: 	(t=10503 jiffies g=18833 q=2706 ncpus=2)
CPU: 0 PID: 6396 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x96/0x120 kernel/kcov.c:350
Code: 41 54 53 48 8b 54 24 20 65 4c 8b 05 f4 28 7e 7e 45 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d e2 28 7e 7e <41> 81 e3 00 01 ff 00 74 13 41 81 fb 00 01 00 00 75 d9 41 83 b8 1c
RSP: 0018:ffffc90000007450 EFLAGS: 00000212
RAX: 0000000000000020 RBX: 000000396fe9beaa RCX: 0000000000000005
RDX: ffffffff818890dd RSI: ffffffff8cd797e0 RDI: 0000000000000004
RBP: 0000000000000004 R08: ffff88802a195a00 R09: 000000000000001e
R10: 000000000000001e R11: 0000000000000105 R12: ffff88801824204c
R13: f800000000000000 R14: 000000000000003c R15: 0000000000028ba4
FS:  0000555576d49500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005d5a1000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 check_buffer+0x24d/0x950 kernel/trace/ring_buffer.c:3495
 __rb_reserve_next+0x511/0xd50 kernel/trace/ring_buffer.c:3624
 rb_reserve_next_event kernel/trace/ring_buffer.c:3759 [inline]
 ring_buffer_lock_reserve+0xae1/0xed0 kernel/trace/ring_buffer.c:3818
 __trace_buffer_lock_reserve kernel/trace/trace.c:992 [inline]
 trace_event_buffer_lock_reserve+0x1d0/0x6e0 kernel/trace/trace.c:2902
 trace_event_buffer_reserve+0x29b/0x3c0 kernel/trace/trace_events.c:661
 do_trace_event_raw_event_bpf_trace_printk kernel/trace/bpf_trace.h:11 [inline]
 trace_event_raw_event_bpf_trace_printk+0x101/0x210 kernel/trace/bpf_trace.h:11
 trace_bpf_trace_printk+0x142/0x1a0 kernel/trace/bpf_trace.h:11
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0x11f/0x190 kernel/trace/bpf_trace.c:371
 bpf_prog_9e1c00255e17e72e+0x38/0x3a
 bpf_dispatcher_nop_func include/linux/bpf.h:1213 [inline]
 __bpf_prog_run include/linux/filter.h:612 [inline]
 bpf_prog_run include/linux/filter.h:619 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2322 [inline]
 bpf_trace_run1+0x1c9/0x3b0 kernel/trace/bpf_trace.c:2360
 __bpf_trace_rcu_utilization+0xa2/0xe0 include/trace/events/rcu.h:27
 __traceiter_rcu_utilization+0x70/0xa0 include/trace/events/rcu.h:27
 trace_rcu_utilization+0x179/0x1a0 include/trace/events/rcu.h:27
 rcu_core+0x1341/0x1720 kernel/rcu/tree.c:2475
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0xa1/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0010:finish_task_switch+0x26a/0x920 kernel/sched/core.c:5254
Code: 0f 84 37 01 00 00 48 85 db 0f 85 56 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 10 a3 1a 09 e8 ab a2 2f 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90004187618 EFLAGS: 00000286
RAX: fa97a9dfa03df300 RBX: 0000000000000000 RCX: fa97a9dfa03df300
RDX: dffffc0000000000 RSI: ffffffff8aaab9a0 RDI: ffffffff8afc6640
RBP: ffffc90004187670 R08: ffffffff8e4a87ef R09: 1ffffffff1c950fd
R10: dffffc0000000000 R11: fffffbfff1c950fe R12: ffff88802a195a00
R13: dffffc0000000000 R14: ffff88802b0bda00 R15: ffff8880b8e3cf08
 context_switch kernel/sched/core.c:5383 [inline]
 __schedule+0x14da/0x44d0 kernel/sched/core.c:6699
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6866
 preempt_schedule+0xab/0xc0 kernel/sched/core.c:6890
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfa/0x110 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock kernel/sched/wait.c:140 [inline]
 __wake_up_sync_key+0x11f/0x190 kernel/sched/wait.c:213
 pipe_write+0x132a/0x1af0 fs/pipe.c:600
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x43b/0x940 fs/read_write.c:584
 ksys_write+0x147/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f61df38d69f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007ffdfb3ee680 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000051 RCX: 00007f61df38d69f
RDX: 0000000000000004 RSI: 00007ffdfb3ee740 RDI: 00000000000000f8
RBP: 00007ffdfb3ee6ec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000027
R13: 00000000000927c0 R14: 00000000000228ed R15: 00007ffdfb3ee740
 </TASK>