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INFO: rcu detected stall in perf_event_open

Status: auto-closed as invalid on 2021/09/21 01:14
Subsystems: kernel
[Documentation on labels]
First crash: 1526d, last: 1526d
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: rcu detected stall in sys_perf_event_open (2) origin:lts-only 1 C error 14 1d02h 595d 0/3 upstream: reported C repro on 2024/01/09 18:19
upstream INFO: rcu detected stall in perf_event_open (2) perf 1 1 1429d 1429d 0/29 auto-closed as invalid on 2021/11/26 20:49
linux-6.1 INFO: rcu detected stall in sys_perf_event_open (2) origin:lts-only 1 syz done 8 10d 337d 0/3 upstream: reported syz repro on 2024/09/23 05:55
linux-6.6 INFO: rcu detected stall in perf_event_open 1 2 22h23m 12d 0/2 upstream: reported on 2025/08/14 11:08
upstream BUG: soft lockup in perf_event_open bpf trace 1 2 62d 58d 0/29 moderation: reported on 2025/06/29 04:38

Sample crash report:
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10442 ticks this GP) idle=03a/1/0x4000000000000000 softirq=278343/278348 fqs=0 
	(t=10503 jiffies g=547393 q=21)
rcu: rcu_preempt kthread starved for 10503 jiffies! g547393 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:28800 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 schedule+0xcf/0x270 kernel/sched/core.c:5226
 schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892
 rcu_gp_fqs_loop kernel/rcu/tree.c:2004 [inline]
 rcu_gp_kthread+0xd07/0x2300 kernel/rcu/tree.c:2177
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17917 Comm: syz-executor.3 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline]
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x3c4/0xb40 kernel/locking/qspinlock.c:508
Code: 00 48 c1 e9 03 83 e3 07 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 41 83 ec 01 0f 84 72 04 00 00 <41> 0f b6 45 00 38 d8 7f 08 84 c0 0f 85 91 05 00 00 0f b6 45 00 84
RSP: 0018:ffffc90000007a30 EFLAGS: 00000206
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff19ac65c
RDX: 0000000000000001 RSI: ffffffff817aec91 RDI: ffffffff8132b571
RBP: ffffffff8cd632e0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817aec59 R11: 0000000000000080 R12: 0000000000000353
R13: fffffbfff19ac65c R14: 0000000000000001 R15: ffff8880b9c36400
FS:  00007f87b6ea5700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000085bf9000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113
 spin_lock include/linux/spinlock.h:354 [inline]
 mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1514
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1780
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1834
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1857
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:199
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 ce 2f 41 f8 48 89 ef e8 66 a8 41 f8 e8 c1 9c 61 f8 fb bf 01 00 00 00 <e8> 46 9e 35 f8 65 8b 05 2f a0 e8 76 85 c0 74 02 5d c3 e8 eb f5 e6
RSP: 0018:ffffc90001cdfb38 EFLAGS: 00000206
RAX: 0000000000800509 RBX: 0000000000000001 RCX: 1ffffffff1b926d9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffff8880b9c35640 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817aec78 R11: 0000000000000000 R12: ffff8880b9c35640
R13: ffff88801902b880 R14: 0000000000000000 R15: ffff888028a18000
 finish_lock_switch kernel/sched/core.c:4093 [inline]
 finish_task_switch.isra.0+0x15d/0x810 kernel/sched/core.c:4210
 context_switch kernel/sched/core.c:4342 [inline]
 __schedule+0x91e/0x23e0 kernel/sched/core.c:5147
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:426
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:security_capable+0x4a/0xc0 security/security.c:805
Code: 08 89 4c 24 04 e8 56 77 e0 fd 48 8b 1d 4f 20 7a 07 48 85 db 74 51 e8 45 77 e0 fd 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 <75> 55 8b 4c 24 04 44 89 ea 4c 89 f6 4c 89 ff ff 53 18 31 ff 41 89
RSP: 0018:ffffc90001cdfd40 EFLAGS: 00000246
RAX: 1ffffffff161d23e RBX: ffffffff8b0e91d8 RCX: ffffc90016ba0000
RDX: 0000000000040000 RSI: ffffffff8394653b RDI: ffffffff8b0e91f0
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff83946568 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000026 R14: ffffffff8be39860 R15: ffff88801358d000
 ns_capable_common kernel/capability.c:375 [inline]
 ns_capable kernel/capability.c:396 [inline]
 capable+0x74/0x100 kernel/capability.c:449
 perfmon_capable include/linux/capability.h:259 [inline]
 perf_allow_kernel include/linux/perf_event.h:1322 [inline]
 __do_sys_perf_event_open+0x911/0x2df0 kernel/events/core.c:11953
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f87b6ea5188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9
RDX: 0000000000000010 RSI: 0000000000001a5d RDI: 0000000020000380
RBP: 00000000004bfcb9 R08: 0000000000000009 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffd25526f6f R14: 00007f87b6ea5300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 17915 Comm: syz-executor.3 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:341
 print_cpu_stall kernel/rcu/tree_stall.h:624 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:699 [inline]
 rcu_pending kernel/rcu/tree.c:3911 [inline]
 rcu_sched_clock_irq.cold+0x3f1/0x74b kernel/rcu/tree.c:2649
 update_process_times+0x16d/0x200 kernel/time/timer.c:1796
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1373
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x78f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1525
Code: bb a4 3c 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 38 d0 7f 08 84 c0 0f 85 36 09 00 00 44 0f b6 bb a4 3c 00 00 <31> ff 44 89 fe e8 b7 b7 4c fc 45 84 ff 0f 84 77 ff ff ff e8 f9 b0
RSP: 0018:ffffc90000dc0ba0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880692031e0 RCX: 0000000000000100
RDX: 0000000000000004 RSI: ffffffff85282b43 RDI: ffff888069206e84
RBP: dffffc0000000000 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff85282b79 R11: 0000000000000000 R12: ffff888088e2d640
R13: ffff888067f23410 R14: ffff888067f231e0 R15: 0000000000000000
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1780
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1834
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1857
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:197
Code: 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 40 00 65 8b 05 39 13 8d 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 <a9> 00 01 ff 00 74 0e 85 c9 74 35 8b 82 3c 15 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc90001d9f3d8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802ef51c40 RSI: ffffffff81348232 RDI: 0000000000000003
RBP: 8000000000000163 R08: 0000000000000200 R09: 0000000000000000
R10: ffffffff813481ab R11: 0000000000000000 R12: 8000000000000163
R13: 000000000000019a R14: ffff88807c808cd0 R15: 000000000008319a
 pfn_pte arch/x86/include/asm/pgtable.h:605 [inline]
 split_set_pte arch/x86/mm/pat/set_memory.c:964 [inline]
 __split_large_page arch/x86/mm/pat/set_memory.c:1030 [inline]
 split_large_page arch/x86/mm/pat/set_memory.c:1085 [inline]
 __change_page_attr arch/x86/mm/pat/set_memory.c:1583 [inline]
 __change_page_attr_set_clr+0x682/0x1ec0 arch/x86/mm/pat/set_memory.c:1667
 cpa_process_alias arch/x86/mm/pat/set_memory.c:1617 [inline]
 __change_page_attr_set_clr+0x14b2/0x1ec0 arch/x86/mm/pat/set_memory.c:1674
 change_page_attr_set_clr+0x333/0x500 arch/x86/mm/pat/set_memory.c:1760
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0x78/0xa0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:852 [inline]
 bpf_int_jit_compile+0xe11/0x11b0 arch/x86/net/bpf_jit_comp.c:2329
 bpf_prog_select_runtime+0x464/0x6a0 kernel/bpf/core.c:1867
 bpf_prog_load+0xe75/0x1f40 kernel/bpf/syscall.c:2221
 __do_sys_bpf+0x1272/0x4f40 kernel/bpf/syscall.c:4411
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f87b6ec6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000078 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffd25526f6f R14: 00007f87b6ec6300 R15: 0000000000022000

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/06/23 01:10 bpf 5dec6d96d12d aba2b2fb .config console log report info ci-upstream-bpf-kasan-gce INFO: rcu detected stall in perf_event_open
* Struck through repros no longer work on HEAD.