rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=108c/1/0x4000000000000000 softirq=38548/38548 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P9224/2:b..l
rcu: 	(detected by 0, t=10506 jiffies, g=26481, q=367 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9302 Comm: syz.0.657 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0xba/0xd20
Code: 89 df 31 d2 e8 17 f0 ff ff 48 8b 3c 24 48 85 c0 0f 84 02 0c 00 00 8b 0d d4 ff b9 17 8b 97 28 0b 00 00 85 c9 0f 94 c1 83 fa 30 <40> 0f 93 c6 40 20 ce 40 80 fe 01 0f 84 30 01 00 00 44 89 74 24 1c
RSP: 0018:ffffc900001e0750 EFLAGS: 00000083
RAX: ffffffff92f3d3a8 RBX: ffff888136627ad8 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888106113a00
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: ffffed1026cc4f59 R12: 0000000000000000
R13: ffff888136627ad8 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f8e2d26e6c0(0000) GS:ffff8881a4173000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000110f02000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x120/0x360
 _raw_spin_lock_irqsave+0xa7/0xf0
 hrtimer_try_to_cancel+0x22b/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3b8/0x500
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_user_addr_fault+0x1ae/0x1380
Code: 1b 48 89 de 48 81 e6 00 02 00 00 31 ff e8 aa 15 4b 00 48 81 e3 00 02 00 00 0f 84 6e 0e 00 00 e8 18 c7 52 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 a8 10 4b 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc9000373fb58 EFLAGS: 00000282
RAX: 7456f932a5489000 RBX: 0000000000000200 RCX: 7456f932a5489000
RDX: 0000000000000000 RSI: ffffffff8d53a1aa RDI: ffffffff8b9ec2e0
RBP: dffffc0000000000 R08: ffffffff8f5cd537 R09: 1ffffffff1eb9aa6
R10: dffffc0000000000 R11: fffffbfff1eb9aa7 R12: ffffc9000373fc48
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888106113a00
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x51/0x90
Code: 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 eb 05 e9 7f 0e 04 00 <48> 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01
RSP: 0018:ffffc9000373fcf8 EFLAGS: 00010202
RAX: 00007ffffffff001 RBX: 0000000000000048 RCX: 0000000000000048
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffc9000373fd60
RBP: ffffc9000373feb8 R08: ffffc9000373fda7 R09: 1ffff920006e7fb4
R10: dffffc0000000000 R11: fffff520006e7fb5 R12: 1ffff920006e7fa8
R13: 0000000000000048 R14: ffffc9000373fd60 R15: 0000000000000000
 _copy_from_user+0x7a/0xb0
 __sys_bpf+0x1e3/0x860
 __x64_sys_bpf+0x7c/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8e2c38ec29
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:00007f8e2d26e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8e2c5d5fa0 RCX: 00007f8e2c38ec29
RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8e2c411e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8e2c5d6038 R14: 00007f8e2c5d5fa0 R15: 00007ffcb1199238
 </TASK>
task:syz.7.640       state:R  running task     stack:21200 pid:9224  tgid:9224  ppid:7127   task_flags:0x40064c flags:0x00080001
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 eb bf ae 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900036ff0d0 EFLAGS: 00000206
RAX: a54d7cd8558a2700 RBX: 0000000000000000 RCX: a54d7cd8558a2700
RDX: 0000000000000000 RSI: ffffffff8d71ebcb RDI: ffffffff8b9ec2e0
RBP: ffffffff81f6928c R08: 0000000000000000 R09: ffffffff81f6928c
R10: 0000000000000406 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8dd3a960 R14: 0000000000000000 R15: 0000000000000246
 folio_try_get+0x38/0x340
 find_lock_entries+0x24f/0xa60
 shmem_undo_range+0x254/0x14b0
 shmem_evict_inode+0x272/0xa70
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 __fput+0x68e/0xa70
 task_work_run+0x1d4/0x260
 do_exit+0x6b5/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1285/0x1340
 arch_do_signal_or_restart+0xa0/0x790
 irqentry_exit_to_user_mode+0x7e/0x110
 exc_page_fault+0x9f/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7ff00278ec31
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff0029d5fa0 RCX: 00007ff00278ec29
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007ff002811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ff0029d6038 R14: 00007ff0029d5fa0 R15: 00007ffd66681568
 </TASK>
rcu: rcu_preempt kthread starved for 10506 jiffies! g26481 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:27256 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 9293 Comm: syz.7.654 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__sanitizer_cov_trace_pc+0x46/0x70
Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 7c 16 00 00 00 74 2c 8b 91 58 16 00 00 83 fa 02 75 21 48 8b 91 60 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 5c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2
RSP: 0018:ffffc90003497418 EFLAGS: 00000246
RAX: ffffffff81b306ab RBX: 1ffff11026cc7f61 RCX: ffff88810bb6d700
RDX: ffffc9000a559000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900034975a0 R08: ffffffff8f5cd537 R09: 1ffffffff1eb9aa6
R10: dffffc0000000000 R11: fffffbfff1eb9aa7 R12: ffff88813663fb08
R13: dffffc0000000000 R14: ffff88804b23b1c0 R15: 0000000000000001
FS:  00007ff0035726c0(0000) GS:ffff8880b8d73000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32415ff8 CR3: 000000010ff5a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000082
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 smp_call_function_many_cond+0xd4b/0x12d0
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f9/0x1130
 __static_call_transform+0x4eb/0x750
 arch_static_call_transform+0x98/0xc0
 __static_call_update+0xe4/0x5d0
 tracepoint_add_func+0x91e/0xa10
 tracepoint_probe_register+0x5d/0x90
 perf_trace_event_init+0x4e1/0x9d0
 perf_trace_init+0x23d/0x2d0
 perf_tp_event_init+0x8d/0x120
 perf_try_init_event+0x17f/0x870
 perf_event_alloc+0x133e/0x2be0
 __se_sys_perf_event_open+0x772/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff00278ec29
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:00007ff003572038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007ff0029d6090 RCX: 00007ff00278ec29
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000040
RBP: 00007ff002811e41 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff0029d6128 R14: 00007ff0029d6090 R15: 00007ffd66681568
 </TASK>
