warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow syz-executor.6 (4339) used greatest stack depth: 23824 bytes left watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:4321] Modules linked in: irq event stamp: 4800071 hardirqs last enabled at (4800070): [] asm_sysvec_irq_work+0x1a/0x20 hardirqs last disabled at (4800071): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (1046982): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (1046985): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 4321 Comm: syz-executor.5 Not tainted 6.5.0-rc1-next-20230714 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 c6 0e d8 fc 48 89 ef e8 8e 8c d8 fc 80 e7 02 74 06 e8 04 04 fe fc fb 65 ff 0d 94 d6 ad 7b <74> 07 5b 5d e9 03 2a 00 00 0f 1f 44 00 00 5b 5d e9 f7 29 00 00 0f RSP: 0018:ffff88806ce09958 EFLAGS: 00000202 RAX: 000000000035c948 RBX: 0000000000000246 RCX: ffffffff812d209f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8455b46c RBP: ffffffff856d9ac0 R08: 0000000000000001 R09: fffffbfff0efa773 R10: ffffffff877d3b9f R11: 0000000000000001 R12: ffff88800d424b40 R13: 0000000000000000 R14: 0000000000000820 R15: 0000000000000820 FS: 00007f5a49fcc700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f25c209e6e8 CR3: 000000001f93c000 CR4: 0000000000350ef0 Call Trace: kmem_cache_alloc+0x21f/0x390 dst_alloc+0xa1/0x620 ip6_dst_alloc+0x32/0xa0 icmp6_dst_alloc+0x71/0x610 ndisc_send_skb+0x11e1/0x1c10 ndisc_send_rs+0x135/0x550 addrconf_rs_timer+0x2f0/0x7d0 call_timer_fn+0x17d/0x4e0 expire_timers+0x272/0x460 run_timer_softirq+0x2f5/0x880 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_irq_work+0x6e/0x90 asm_sysvec_irq_work+0x1a/0x20 RIP: 0010:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 c5 ba 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:ffff8880425bf8c8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff110084b7f1b RCX: 0000000000000001 RDX: 1ffff110033d6b75 RSI: 0000000000000008 RDI: ffffffff871f28f8 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff0efa764 R10: ffffffff877d3b27 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff85653da8 R15: 0000000000000000 __mutex_lock+0x12a/0x1a30 register_kprobe+0x131/0x1580 __register_trace_kprobe+0x26a/0x2d0 create_local_trace_kprobe+0x1ea/0x3d0 perf_kprobe_init+0x119/0x210 perf_kprobe_event_init+0xfc/0x1d0 perf_try_init_event+0x130/0x570 perf_event_alloc.part.0+0xf84/0x3a30 __do_sys_perf_event_open+0x4d9/0x2a60 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f5a4ca56b19 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:00007f5a49fcc188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f5a4cb69f60 RCX: 00007f5a4ca56b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f5a4cab0f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdf28af89f R14: 00007f5a49fcc300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 18 53 48 sbb %dl,0x48(%rbx) 3: 89 f3 mov %esi,%ebx 5: 48 8b 74 24 10 mov 0x10(%rsp),%rsi a: e8 c6 0e d8 fc callq 0xfcd80ed5 f: 48 89 ef mov %rbp,%rdi 12: e8 8e 8c d8 fc callq 0xfcd88ca5 17: 80 e7 02 and $0x2,%bh 1a: 74 06 je 0x22 1c: e8 04 04 fe fc callq 0xfcfe0425 21: fb sti 22: 65 ff 0d 94 d6 ad 7b decl %gs:0x7badd694(%rip) # 0x7badd6bd * 29: 74 07 je 0x32 <-- trapping instruction 2b: 5b pop %rbx 2c: 5d pop %rbp 2d: e9 03 2a 00 00 jmpq 0x2a35 32: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 37: 5b pop %rbx 38: 5d pop %rbp 39: e9 f7 29 00 00 jmpq 0x2a35 3e: 0f .byte 0xf