watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:11814] Modules linked in: irq event stamp: 2373555 hardirqs last enabled at (2373554): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2373555): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2290500): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2290503): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 11814 Comm: syz-executor.4 Not tainted 6.13.0-rc2-next-20241209 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x4/0x170 Code: ff ff ff eb c7 e8 bc 21 46 03 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 10 48 89 fa RSP: 0018:ffff88806ce09810 EFLAGS: 00000286 RAX: ffffffff835bca36 RBX: ffffffff815f05c0 RCX: 0000000000000001 RDX: 1ffff1100d9c130e RSI: ffffffff835bca36 RDI: ffff88806ce098e0 RBP: ffff88806ce098b0 R08: 0000000000000001 R09: ffff88806ce09858 R10: 000000000003a7c3 R11: 000000000009640a R12: ffff88806ce098e0 R13: 0000000000000000 R14: ffff88803e641bc0 R15: ffff88803c866d00 FS: 00007f54a0f2e700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f01cfea8004 CR3: 000000003af0c000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 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 skb_release_data+0x814/0x990 consume_skb+0xd0/0x160 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:slab_update_freelist.constprop.0.isra.0+0xdc/0x120 Code: 00 00 00 4d 89 74 24 28 eb 9b 88 44 24 08 e8 db d4 d5 ff fb 0f b6 44 24 08 eb af 48 89 d0 48 89 ca 4c 89 c9 f0 48 0f c7 4e 20 <0f> 94 c0 eb 9b f3 90 eb 9b 65 ff 0d bc 8c 5f 7e 74 1c f3 90 49 8b RSP: 0018:ffff88803fb2f4b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888018b116f0 RCX: 00000000000d000c RDX: 00000000000d000d RSI: ffffea000062c440 RDI: 0000000000080000 RBP: ffff88803fb2f4f0 R08: ffff888018b116f0 R09: 00000000000d000c R10: ffffea000062c401 R11: 0000000000000000 R12: ffffea000062c440 R13: 0000000000000000 R14: 00000000000d000c R15: ffff888008c4f780 __slab_free+0x8f/0x310 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 ptlock_alloc+0x21/0x70 pte_alloc_one+0x78/0x340 __pte_alloc+0x6d/0x350 copy_page_range+0x2881/0x4cf0 dup_mm+0xe53/0x1f90 copy_process+0x704c/0x70e0 kernel_clone+0xeb/0x850 __do_sys_fork+0x80/0xc0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f54a39b8b19 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:00007f54a0f2e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f54a3acbf60 RCX: 00007f54a39b8b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f54a3a12f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9defa34f R14: 00007f54a0f2e300 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), 3 bytes skipped: 0: eb c7 jmp 0xffffffc9 2: e8 bc 21 46 03 callq 0x34621c3 7: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) e: 00 00 00 11: 66 90 xchg %ax,%ax 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: f3 0f 1e fa endbr64 * 27: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2e: fc ff df 31: 55 push %rbp 32: 53 push %rbx 33: 48 89 fb mov %rdi,%rbx 36: 48 83 c7 10 add $0x10,%rdi 3a: 48 89 fa mov %rdi,%rdx