Bluetooth: hci0: command 0x0406 tx timeout rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (302 ticks this GP) idle=4cc4/1/0x4000000000000000 softirq=252402/252404 fqs=20993 rcu: (detected by 1, t=105002 jiffies, g=178889, q=75544 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4094 Comm: syz-executor.6 Not tainted 6.5.0-rc1-next-20230713 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:native_apic_mem_read+0x3a/0x50 Code: fb 48 8d bb 00 c0 5f ff 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 0c 8b 83 00 c0 5f ff <5b> e9 50 ff 43 03 e8 5b cf 6f 00 eb ed 66 0f 1f 84 00 00 00 00 00 RSP: 0018:ffff88806ce093d0 EFLAGS: 00000046 RAX: 00000000000400f6 RBX: 0000000000000300 RCX: 0000000000000100 RDX: 0000000000000000 RSI: ffffffff815a07bc RDI: ffffffffff5fc300 RBP: fffffbfff0a5c194 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88806ce3a330 R14: 0000000000000000 R15: 0000000000000010 FS: 00007f960af62700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555cf6098 CR3: 000000000caa4000 CR4: 0000000000350ef0 Call Trace: native_apic_wait_icr_idle+0x51/0x80 __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 00 8b 03 00 48 8d bb f4 03 00 00 48 b8 00 00 00 00 RSP: 0018:ffff88806ce09a98 EFLAGS: 00000202 RAX: 0000000000007ddc RBX: ffff88806ce3a300 RCX: ffffffff812d1e5f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81378521 RBP: ffffffff85616a00 R08: 0000000000000001 R09: fffffbfff0efa573 R10: ffffffff877d2b9f R11: 0000000000000001 R12: 0000000000000001 R13: dffffc0000000000 R14: 0000000000000200 R15: 0000000000000000 netif_receive_skb_list_internal+0x794/0xce0 napi_complete_done+0x242/0x890 e1000_clean+0x9b5/0x2510 __napi_poll+0xbd/0x6b0 net_rx_action+0x8a3/0xc40 __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_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 05 bd d4 7e 83 f8 01 0f 85 8f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff888041a6fb90 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff1100834df74 RCX: 0000000000000002 RDX: 1ffff110086aeb75 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff0f2f6e8 R10: ffffffff8797b747 R11: 0000000000000005 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88801a7aac60 R15: 0000000000000000 _raw_spin_lock+0x2b/0x40 __mutex_unlock_slowpath+0x18c/0x5e0 __do_sys_perf_event_open+0x190e/0x2a60 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f960da0db19 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:00007f960af62188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f960db21020 RCX: 00007f960da0db19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000580 RBP: 00007f960da67f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc478feb5f R14: 00007f960af62300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: fb sti 1: 48 8d bb 00 c0 5f ff lea -0xa04000(%rbx),%rdi 8: 48 89 fa mov %rdi,%rdx b: 48 c1 ea 03 shr $0x3,%rdx f: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx 13: 48 89 f8 mov %rdi,%rax 16: 83 e0 07 and $0x7,%eax 19: 83 c0 03 add $0x3,%eax 1c: 38 d0 cmp %dl,%al 1e: 7c 04 jl 0x24 20: 84 d2 test %dl,%dl 22: 75 0c jne 0x30 24: 8b 83 00 c0 5f ff mov -0xa04000(%rbx),%eax * 2a: 5b pop %rbx <-- trapping instruction 2b: e9 50 ff 43 03 jmpq 0x343ff80 30: e8 5b cf 6f 00 callq 0x6fcf90 35: eb ed jmp 0x24 37: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 3e: 00 00