rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=2b84/1/0x4000000000000000 softirq=12203/12212 fqs=2100
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  9459524          0            0
rcu: 	cputime:    21253          0            0   ==> 52550(ms)
rcu: 	(detected by 1, t=10506 jiffies, g=10337, q=2444 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6294 Comm: syz.0.127 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__perf_pending_irq kernel/events/core.c:6838 [inline]
RIP: 0010:perf_pending_irq+0x1c1/0x5e0 kernel/events/core.c:6893
Code: 88 66 01 00 00 e8 0f 4a b8 08 41 89 c4 89 ef 89 c6 e8 e3 4f d6 ff 44 39 e5 0f 85 56 01 00 00 4c 8d 63 f4 4d 89 e7 49 c1 ef 03 <43> 0f b6 04 2f 84 c0 0f 85 4b 03 00 00 41 8b 2c 24 31 ff 89 ee e8
RSP: 0000:ffffc90000007ea0 EFLAGS: 00000807
RAX: ffffffff81af425d RBX: ffff888029d3fe28 RCX: 0000000000010000
RDX: ffff888028735a00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: ffff888029d3fe1c
R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff110053a7fc3
FS:  00007f01844946c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007dd28000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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 8b b3 eb f6 e8 26 3a 1c 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:ffffc9000c657da0 EFLAGS: 00000286
RAX: ac287f8ddd3ffd00 RBX: 0000000000000000 RCX: ac287f8ddd3ffd00
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001
RBP: ffffc9000c657e50 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920018cafb4
 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 82 02 f5 08 65 48 8b 05 da 2b 91 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 d5 69 19 00 fb 41 f6 c6 08 <74> 05 e8 59 2a fd 08 41 f7 c6 00 10 00 00 74 08 48 89 df e8 28 ea
RSP: 0000:ffffc9000c657f10 EFLAGS: 00000202
RAX: ac287f8ddd3ffd00 RBX: ffffc9000c657f58 RCX: ac287f8ddd3ffd00
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffffffff8afc6f80
RBP: 0000000000000000 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000008 R15: ffff888028735a00
 exit_to_user_mode_prepare+0xf6/0x180 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: 0033:0x7f018358f749
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:00007f0184494038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f01837e5fa0 RCX: 00007f018358f749
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f0183613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01837e6038 R14: 00007f01837e5fa0 R15: 00007fff28b7dd08
 </TASK>