rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2687 jiffies s: 1254077 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 25903 Comm: syz.5.4996 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x80 kernel/kcov.c:310
Code: 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 03 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 <48> 8b 04 24 65 48 8b 15 34 03 80 7e 65 8b 0d 35 03 80 7e 81 e1 00
RSP: 0018:ffffc900000073f8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92000000e84 RCX: ffff88802ea68000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007518 R08: dffffc0000000000 R09: 1ffffffff236c448
R10: dffffc0000000000 R11: fffffbfff236c449 R12: ffffc90000007740
R13: ffffc900000074a0 R14: 0000000000000001 R15: ffff88805324a990
FS:  00007f0c935ff6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000004 CR3: 0000000020a65000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock include/linux/rcupdate.h:792 [inline]
 __perf_event_output kernel/events/core.c:7719 [inline]
 perf_event_output_forward+0xf4/0x2f0 kernel/events/core.c:7741
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9487
 perf_swevent_overflow+0x19b/0x230 kernel/events/core.c:9570
 perf_swevent_event+0x458/0x570 kernel/events/core.c:-1
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10055
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10023
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:discover_timer+0x49/0x60 drivers/block/aoe/aoemain.c:25
Code: 3c 08 00 74 0c 48 c7 c7 00 f2 80 8d e8 c0 85 b0 fb be 70 17 00 00 48 03 35 44 ab 5d 07 48 89 df e8 ec 69 4e fb bf ff ff 00 00 <be> ff 00 00 00 5b e9 3c 2e ff ff 00 00 cc cc 00 00 cc cc 00 00 cc
RSP: 0018:ffffc90000007b70 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffffffff9801ee60 RCX: 0000000000000100
RDX: dffffc0000000000 RSI: ffffffff8aac1cc0 RDI: 000000000000ffff
RBP: ffffc90000007c70 R08: ffffffff91b6230f R09: 1ffffffff236c461
R10: dffffc0000000000 R11: fffffbfff236c462 R12: dffffc0000000000
R13: 1ffff92000000f74 R14: ffffffff9801ee60 R15: 0000000000000000
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:generic_exec_single+0x427/0x4a0 kernel/smp.c:545
Code: 75 11 e8 3c 1a 0b 00 48 85 db 75 16 e8 32 1a 0b 00 eb 15 e8 2b 1a 0b 00 e8 96 09 c0 08 48 85 db 74 ea e8 1c 1a 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 44 25 00 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900062b7a60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc90020e76000 RSI: 00000000000071de RDI: 00000000000071df
RBP: ffffc900062b7b30 R08: ffffffff91b62347 R09: 1ffffffff236c468
R10: dffffc0000000000 R11: fffffbfff236c469 R12: dffffc0000000000
R13: 1ffff92000c56f50 R14: 0000000000000000 R15: 1ffff92000c56f71
 smp_call_function_single+0x371/0x5a0 kernel/smp.c:784
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x5cf/0x930 kernel/events/core.c:2952
 __do_sys_perf_event_open kernel/events/core.c:12812 [inline]
 __se_sys_perf_event_open+0x1277/0x1eb0 kernel/events/core.c:12406
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0c9279fb19
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0c935ff028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f0c92a25fa0 RCX: 00007f0c9279fb19
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 00002000000003c0
RBP: 00007f0c92837b70 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0c92a26038 R14: 00007f0c92a25fa0 R15: 00007ffc9bb8cd18
 </TASK>