watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.2:5669] Modules linked in: irq event stamp: 3943119 hardirqs last enabled at (3943118): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3943119): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3924052): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3924067): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 5669 Comm: syz-executor.2 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:arch_stack_walk+0x79/0xf0 Code: 00 00 4c 89 ea 4c 89 f6 48 8d bd 68 ff ff ff e8 2d a5 07 00 8b 95 68 ff ff ff 85 d2 75 24 eb 36 4c 89 e7 e8 99 35 7a 03 84 c0 <74> 2a 48 8d bd 68 ff ff ff e8 69 80 07 00 8b 85 68 ff ff ff 85 c0 RSP: 0018:ffff88806cf09830 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff815f0170 RCX: 0000000000000001 RDX: 1ffff1100d9e1340 RSI: ffffffff81abe8af RDI: ffff88806cf09904 RBP: ffff88806cf098c8 R08: 0000000000000001 R09: ffff88806cf09870 R10: 000000000003a7a3 R11: 000000000002438e R12: ffff88806cf098f8 R13: 0000000000000000 R14: ffff888018625340 R15: ffff88800df20b40 FS: 00007fbffcb14700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563ce0f16f20 CR3: 0000000009b98000 CR4: 0000000000350ef0 Call Trace: stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_record_aux_stack+0x89/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kmem_cache_free+0x2ae/0x470 kfree_skbmem+0x18a/0x1f0 consume_skb+0xdd/0x160 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 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:qlist_free_all+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 b0 8f d2 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 8e 8f d2 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff88803d857990 EFLAGS: 00000286 RAX: ffff88800ebabb90 RBX: ffff88800ebabb90 RCX: ffff88808ebabb90 RDX: ffffea00003aeac0 RSI: ffff888008c4f780 RDI: ffffffff84a7384c RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0fddbe9 R10: ffffffff87eedf4f R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803d8579c8 R14: ffff88801368d6f0 R15: ffff88801368d6f0 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 copy_net_ns+0x16c/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x26c0/0x70e0 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbfff59eb19 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:00007fbffcb14188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fbfff6b1f60 RCX: 00007fbfff59eb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fbfff5f8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff843f2bcf R14: 00007fbffcb14300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 Process accounting resumed ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 4c 89 ea mov %r13,%rdx 5: 4c 89 f6 mov %r14,%rsi 8: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi f: e8 2d a5 07 00 callq 0x7a541 14: 8b 95 68 ff ff ff mov -0x98(%rbp),%edx 1a: 85 d2 test %edx,%edx 1c: 75 24 jne 0x42 1e: eb 36 jmp 0x56 20: 4c 89 e7 mov %r12,%rdi 23: e8 99 35 7a 03 callq 0x37a35c1 28: 84 c0 test %al,%al * 2a: 74 2a je 0x56 <-- trapping instruction 2c: 48 8d bd 68 ff ff ff lea -0x98(%rbp),%rdi 33: e8 69 80 07 00 callq 0x780a1 38: 8b 85 68 ff ff ff mov -0x98(%rbp),%eax 3e: 85 c0 test %eax,%eax