watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.4:7543] Modules linked in: irq event stamp: 3233589 hardirqs last enabled at (3233588): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3233589): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3233572): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3233575): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 7543 Comm: syz-executor.4 Not tainted 6.12.0-next-20241125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irq+0x2b/0x40 Code: 0f 1e fa 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 ba 1e a9 fc 48 89 ef e8 c2 91 a9 fc e8 3d eb d2 fc fb 65 ff 0d ad 8c 7c 7b <74> 06 5d e9 fd 1e 00 00 0f 1f 44 00 00 5d e9 f2 1e 00 00 66 90 90 RSP: 0018:ffff88806ce09df0 EFLAGS: 00000206 RAX: 0000000000315732 RBX: fffffffffffd5032 RCX: 1ffffffff0fe00cf RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84871a13 RBP: ffff88806ce29600 R08: 0000000000000001 R09: fffffbfff0fddff1 R10: ffffffff87eeff8f R11: 1580a0fc1206bd7e R12: ffff88806ce38430 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88806ce29600 FS: 00007fb616f34700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb616f33ff8 CR3: 000000003ea10000 CR4: 0000000000350ef0 Call Trace: __run_timer_base.part.0+0xfd/0x950 run_timer_softirq+0x87/0x1e0 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:___cache_free+0x68/0xf0 Code: 8b 50 08 49 89 c2 f6 c2 01 0f 85 80 00 00 00 66 90 41 80 7a 33 f5 b8 00 00 00 00 4c 0f 45 d0 65 48 8b 05 d3 21 7d 7e 48 03 07 <48> 8b 50 08 4c 39 50 10 75 42 8b 4f 28 48 8b 00 48 89 04 0b 48 8d RSP: 0018:ffff88803ed975a8 EFLAGS: 00000286 RAX: ffff88806ce3f5c0 RBX: ffff88803fdca000 RCX: ffffea0000ff7200 RDX: ffffea0000ff7201 RSI: ffff88803fdca000 RDI: ffff888008c41dc0 RBP: ffff88803ed975b0 R08: 0000000000000001 R09: ffffffff818c055b R10: ffffea0000ff7200 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803ed975f8 R14: ffff88803fdca000 R15: ffff88803fdca000 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_lru_noprof+0x14c/0x3c0 __d_alloc+0x31/0x990 d_alloc+0x4a/0x1e0 d_alloc_parallel+0xe6/0x1140 __lookup_slow+0x193/0x470 walk_component+0x345/0x5b0 link_path_walk.part.0+0x683/0xd50 path_openat+0x2e3/0x2980 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb619971a04 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007fb616f340b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb619ad1f60 RCX: 00007fb619971a04 RDX: 0000000000000000 RSI: 00007fb619a17f82 RDI: 00000000ffffff9c RBP: 00007fb619a17f82 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffd2664881f R14: 00007fb616f34300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 0f 1e fa nop %edx 3: 55 push %rbp 4: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 9: 48 89 fd mov %rdi,%rbp c: 48 83 c7 18 add $0x18,%rdi 10: e8 ba 1e a9 fc callq 0xfca91ecf 15: 48 89 ef mov %rbp,%rdi 18: e8 c2 91 a9 fc callq 0xfca991df 1d: e8 3d eb d2 fc callq 0xfcd2eb5f 22: fb sti 23: 65 ff 0d ad 8c 7c 7b decl %gs:0x7b7c8cad(%rip) # 0x7b7c8cd7 * 2a: 74 06 je 0x32 <-- trapping instruction 2c: 5d pop %rbp 2d: e9 fd 1e 00 00 jmpq 0x1f2f 32: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 37: 5d pop %rbp 38: e9 f2 1e 00 00 jmpq 0x1f2f 3d: 66 90 xchg %ax,%ax 3f: 90 nop