rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (375 ticks this GP) idle=6d0c/1/0x4000000000000000 softirq=192659/192659 fqs=41707 rcu: (detected by 1, t=105002 jiffies, g=179157, q=48421 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5093 Comm: syz-executor.6 Not tainted 6.5.0-rc4-next-20230804 #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:ffff88806ce096d0 EFLAGS: 00000046 RAX: 00000000000400f6 RBX: 00000000000000f6 RCX: 0000000000000100 RDX: 1ffffffff0a5e9a3 RSI: ffffffff815a47ec RDI: 00000000000000f6 RBP: ffffffff852f4cc0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88806ce3a570 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f116ce78700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43b5cbf8e0 CR3: 000000004102c000 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+0x2c6/0x3f0 perf_tp_event+0x2dd/0x1280 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 40 8d 03 00 48 8d bb f4 03 00 00 48 b8 00 00 00 00 RSP: 0018:ffff88806ce09db8 EFLAGS: 00000202 RAX: 0000000000008e54 RBX: ffff88806ce3a540 RCX: 1ffffffff0ba9801 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8137c051 RBP: ffffffff85617500 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff85d4e9d7 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff831d0e00 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+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_release+0x3da/0x680 Code: ff ff ff ff 65 0f c1 05 a4 95 d4 7e 83 f8 01 0f 85 22 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c5 48 c7 45 00 00 00 00 00 c7 45 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff888040f97cb8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: ffffffffffffffff RCX: ffff888040f97d08 RDX: 1ffff110081e1b74 RSI: 0000000000000000 RDI: ffff888040f0dba0 RBP: 1ffff110081f2f99 R08: 0000000000000001 R09: ffff888040f0dba8 R10: ffffffff85d4e9d7 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffff815fc43b R14: 0000000000000001 R15: ffff888040f0d1c0 up_read+0x16/0x20 __do_sys_perf_event_open+0x199b/0x2ae0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f116f902b19 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:00007f116ce78188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f116fa15f60 RCX: 00007f116f902b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000340 RBP: 00007f116f95cf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd2207e3f R14: 00007f116ce78300 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