watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.7:18970] Modules linked in: irq event stamp: 2224317 hardirqs last enabled at (2224316): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2224317): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2202732): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2202735): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 18970 Comm: syz-executor.7 Not tainted 6.13.0-rc1-next-20241206 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x297/0x2490 Code: 48 8d 3c 40 4c 8d 84 3f e8 78 76 86 83 c2 01 49 81 f8 b6 e8 c2 86 0f 83 c1 13 00 00 89 d7 48 8d 3c 7f 48 8d bc 3f e8 78 76 86 <48> 81 ff b6 e8 c2 86 0f 87 a6 13 00 00 44 29 da 48 8d 3c 85 b4 83 RSP: 0018:ffff88806cf09a08 EFLAGS: 00000287 RAX: 0000000000000003 RBX: 0000000000000001 RCX: ffffffff8100012f RDX: 0000000000000024 RSI: 0000000000000001 RDI: ffffffff867679c0 RBP: ffff88806cf09ad0 R08: ffffffff867678fa R09: ffff88806cf09ab8 R10: 000000000003a7a3 R11: 0000000000000003 R12: ffff88806cf09ad8 R13: ffff88806cf09ac0 R14: ffff88806cf09ab9 R15: ffff88806cf09a78 FS: 00007f0585faf700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055558cbef098 CR3: 000000003e2bc000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x38/0x50 kmem_cache_free+0x138/0x470 rcu_core+0x7c9/0x17a0 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:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 f4 a9 ab ff 4d 85 ed 74 06 e8 da 71 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff8880409574b0 EFLAGS: 00000246 RAX: 0000000000213edf RBX: ffffea0000ee3100 RCX: 1ffffffff0fdfcc7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a47976 RBP: ffff8880096a0500 R08: 0000000000000001 R09: fffffbfff0fddbe9 R10: ffffffff87eedf4f R11: 0000000000000000 R12: ffff88806cf43530 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88803b8c4c00 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 security_inode_init_security+0x13e/0x390 __ext4_new_inode+0x33d0/0x4b20 ext4_create+0x2e3/0x4e0 lookup_open.isra.0+0x11c1/0x1620 path_openat+0xc91/0x2990 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: 0033:0x7f0588a39b19 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:00007f0585faf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f0588b4cf60 RCX: 00007f0588a39b19 RDX: 0000000000101042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f0588a93f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff081f9adf R14: 00007f0585faf300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 48 8d 3c 40 lea (%rax,%rax,2),%rdi 4: 4c 8d 84 3f e8 78 76 lea -0x79898718(%rdi,%rdi,1),%r8 b: 86 c: 83 c2 01 add $0x1,%edx f: 49 81 f8 b6 e8 c2 86 cmp $0xffffffff86c2e8b6,%r8 16: 0f 83 c1 13 00 00 jae 0x13dd 1c: 89 d7 mov %edx,%edi 1e: 48 8d 3c 7f lea (%rdi,%rdi,2),%rdi 22: 48 8d bc 3f e8 78 76 lea -0x79898718(%rdi,%rdi,1),%rdi 29: 86 * 2a: 48 81 ff b6 e8 c2 86 cmp $0xffffffff86c2e8b6,%rdi <-- trapping instruction 31: 0f 87 a6 13 00 00 ja 0x13dd 37: 44 29 da sub %r11d,%edx 3a: 48 rex.W 3b: 8d .byte 0x8d 3c: 3c 85 cmp $0x85,%al 3e: b4 83 mov $0x83,%ah