rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (205 ticks this GP) idle=28fc/1/0x4000000000000000 softirq=349899/349899 fqs=20995 rcu: (detected by 1, t=105002 jiffies, g=272189, q=9993 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6056 Comm: syz-executor.0 Not tainted 6.3.0-rc6-next-20230413 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:default_send_IPI_self+0x29/0xf0 Code: 90 f3 0f 1e fa 55 53 83 ff 02 74 61 a0 60 f8 eb ff ff fb ff ff 89 fb 84 c0 74 08 3c 03 0f 8e 97 00 00 00 8b 04 25 00 c3 5f ff <48> bd 60 f8 eb ff ff fb ff ff f6 c4 10 74 1e f3 90 0f b6 45 00 84 RSP: 0018:ffff88806ce096a8 EFLAGS: 00000046 RAX: 00000000000400f6 RBX: 00000000000000f6 RCX: 0000000000000100 RDX: 1ffffffff0a54fa3 RSI: ffffffff8159334c RDI: 00000000000000f6 RBP: ffffffff852a7cc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88806ce3a570 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f39355b8700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c343000 CR3: 000000000e508000 CR4: 0000000000350ef0 Call Trace: arch_irq_work_raise+0x8b/0x110 __irq_work_queue_local+0xc1/0x2f0 irq_work_queue_on+0x122/0x130 __rcu_read_unlock+0x3f0/0x4f0 perf_event_output_forward+0x21c/0x3c0 __perf_event_overflow+0x4c2/0x9e0 perf_swevent_event+0x344/0x550 perf_tp_event+0x2ce/0x10c0 perf_trace_run_bpf_submit+0xf3/0x190 perf_trace_preemptirq_template+0x252/0x420 trace_hardirqs_on+0xce/0x100 asm_sysvec_irq_work+0x1a/0x20 RIP: 0010:__rcu_read_unlock+0xc8/0x4f0 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 76 01 00 00 8b 85 f8 03 00 00 85 c0 75 58 <65> 48 8b 1c 25 80 8d 03 00 48 8d bb f4 03 00 00 48 b8 00 00 00 00 RSP: 0018:ffff88806ce09da8 EFLAGS: 00000212 RAX: 0000000000005c10 RBX: ffff88806ce3a540 RCX: ffffffff812cb8ff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff813705d1 RBP: ffffffff85615e00 R08: 0000000000000001 R09: ffffffff87785a6f R10: fffffbfff0ef0b4d R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff830fa300 R14: 0000000000000200 R15: dffffc0000000000 ieee80211_iterate_active_interfaces_atomic+0x95/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:generic_exec_single+0x1b1/0x290 Code: 31 e4 4c 89 ef e8 bf e0 09 03 e9 fa fe ff ff e8 75 d9 0a 00 e8 70 0e 12 00 4c 89 ef e8 a8 e0 09 03 e8 53 0d 12 00 fb 45 31 e4 da fe ff ff e8 55 d9 0a 00 0f 0b e9 73 ff ff ff 4c 89 f7 e8 76 RSP: 0018:ffff88801cd9fb10 EFLAGS: 00000246 RAX: 00000000000000e1 RBX: 0000000000000200 RCX: ffffffff812cb8ff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8140ed3d RBP: ffffffff815aeff0 R08: 0000000000000001 R09: ffffffff87785a6f R10: fffffbfff0ef0b4d R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801cd9fc38 R14: ffff88801cd9fb88 R15: ffff888046851ad4 smp_call_function_single+0x327/0x410 task_function_call+0xe5/0x180 perf_install_in_context+0x2cb/0x570 __do_sys_perf_event_open+0x18b9/0x2a60 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f3938042b19 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:00007f39355b8188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f3938155f60 RCX: 00007f3938042b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f393809cf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca423790f R14: 00007f39355b8300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 90 nop 1: f3 0f 1e fa endbr64 5: 55 push %rbp 6: 53 push %rbx 7: 83 ff 02 cmp $0x2,%edi a: 74 61 je 0x6d c: a0 60 f8 eb ff ff fb movabs 0xfffffbffffebf860,%al 13: ff ff 15: 89 fb mov %edi,%ebx 17: 84 c0 test %al,%al 19: 74 08 je 0x23 1b: 3c 03 cmp $0x3,%al 1d: 0f 8e 97 00 00 00 jle 0xba 23: 8b 04 25 00 c3 5f ff mov 0xffffffffff5fc300,%eax * 2a: 48 bd 60 f8 eb ff ff movabs $0xfffffbffffebf860,%rbp <-- trapping instruction 31: fb ff ff 34: f6 c4 10 test $0x10,%ah 37: 74 1e je 0x57 39: f3 90 pause 3b: 0f b6 45 00 movzbl 0x0(%rbp),%eax 3f: 84 .byte 0x84