rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (1 GPs behind) idle=a894/1/0x4000000000000000 softirq=9364/9365 fqs=2100
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number: 13382812          0            0
rcu: 	cputime:    24528          0            0   ==> 52550(ms)
rcu: 	(detected by 0, t=10506 jiffies, g=6461, q=611 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5778 Comm: syz-executor571 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x4/0x120 kernel/rcu/tree.c:4222
Code: 6c 00 4c 85 3b 0f 95 c0 5b 41 5e 41 5f c3 89 fe 89 fb 48 c7 c7 80 50 d3 8c e8 38 a0 e1 02 89 df e9 53 ff ff ff 90 f3 0f 1e fa <41> 57 41 56 53 65 8b 0d 08 d4 93 7e b0 01 f7 c1 00 00 f0 00 0f 85
RSP: 0000:ffffc900001f0e48 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 59cfba410beb8500
RDX: ffff888028079e00 RSI: ffffffff8afc7020 RDI: ffffffff8afc6fe0
RBP: 0000000000000001 R08: dffffc0000000000 R09: 1ffffffff21b4aa0
R10: dffffc0000000000 R11: fffffbfff21b4aa1 R12: 0000000000000000
R13: ffff88802f4202f0 R14: dffffc0000000000 R15: ffffffff81abec4c
FS:  000055555a441380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd4ae340d0 CR3: 00000000777d6000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1e/0x40 kernel/rcu/update.c:348
 ring_buffer_wakeup kernel/events/core.c:6332 [inline]
 perf_event_wakeup+0x131/0x380 kernel/events/core.c:6791
 perf_pending_irq+0x165/0x5e0 kernel/events/core.c:6890
 irq_work_single+0xd5/0x230 kernel/irq_work.c:221
 irq_work_run_list kernel/irq_work.c:252 [inline]
 irq_work_run+0x156/0x2e0 kernel/irq_work.c:261
 __sysvec_irq_work+0x98/0x380 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x9c/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:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7009
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 eb 29 e5 f6 e8 e6 b2 15 f7 fb bf 01 00 00 00 <e8> db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0000:ffffc900044cfda0 EFLAGS: 00000286
RAX: 59cfba410beb8500 RBX: 0000000000000000 RCX: 59cfba410beb8500
RDX: dffffc0000000000 RSI: ffffffff8aaaba20 RDI: 0000000000000001
RBP: ffffc900044cfe50 R08: ffffffff8e4a8f2f R09: 1ffffffff1c951e5
R10: dffffc0000000000 R11: fffffbfff1c951e6 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000899fb4
 irqentry_exit+0x67/0x70 kernel/entry/common.c:438
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:exit_to_user_mode_loop+0x40/0x110 kernel/entry/common.c:164
Code: fb eb 1d e8 42 86 fb 08 65 48 8b 05 1a 32 91 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 f5 6a 19 00 fb 41 f6 c6 08 <74> 05 e8 b9 b2 03 09 41 f7 c6 00 10 00 00 74 08 48 89 df e8 58 e6
RSP: 0000:ffffc900044cff10 EFLAGS: 00000202
RAX: 59cfba410beb8500 RBX: ffffc900044cff58 RCX: 59cfba410beb8500
RDX: dffffc0000000000 RSI: ffffffff8aaaba20 RDI: ffffffff8afc7040
RBP: 0000000000000000 R08: ffffffff8e4a8f2f R09: 1ffffffff1c951e5
R10: dffffc0000000000 R11: fffffbfff1c951e6 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888028079e00
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:315
 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0033:0x7fdd4adbccb9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff105d8c08 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000020000000038c RCX: 00007fdd4adbccb9
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000000000a0 R09: 00000000000000a0
R10: 00000000000000a0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>