watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.2:8497] Modules linked in: irq event stamp: 4469677 hardirqs last enabled at (4469676): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4469677): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4435572): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4435575): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 8497 Comm: syz-executor.2 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kernel_text_address+0x32/0x40 Code: e8 23 ff ff ff 85 c0 75 1b 48 81 fb 00 b0 d5 86 72 0c 31 c0 48 81 fb 4a aa eb 86 0f 92 c0 5b e9 a4 1b 65 03 b8 01 00 00 00 5b 99 1b 65 03 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806cf09588 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffff88806cf095a8 RCX: 0000000000000001 RDX: 1ffff1100d9e12c0 RSI: ffff888030e8f7d0 RDI: ffffffff8184c6cd RBP: ffff88806cf09600 R08: 0000000000000001 R09: ffff88806cf095e8 R10: 000000000003c001 R11: 0000000000023d2f R12: ffff88806cf09670 R13: 0000000000000000 R14: ffff888013659b80 R15: 0000000000092820 FS: 00007f3c2e2ed700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555583e8c098 CR3: 000000001370e000 CR4: 0000000000350ef0 Call Trace: unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/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+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff888030e8f760 EFLAGS: 00000246 RAX: ffff88800f0b1500 RBX: ffff88801377bdc0 RCX: ffffea00003c2c00 RDX: 0000000000000000 RSI: ffffea00003c2c01 RDI: 0000000000080000 RBP: ffff88800969f500 R08: ffff8880321cc000 R09: 0000000000100006 R10: ffffea0000c87200 R11: 00000000ffffffff R12: 0000000000000000 R13: ffff888030e8f798 R14: ffff8880321cc000 R15: ffff8880321cc000 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 copy_net_ns+0x11e/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8ee0 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3c30d77b19 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:00007f3c2e2ed188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f3c30e8af60 RCX: 00007f3c30d77b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f3c30dd1f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe31f125ff R14: 00007f3c2e2ed300 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: e8 23 ff ff ff callq 0xffffff28 5: 85 c0 test %eax,%eax 7: 75 1b jne 0x24 9: 48 81 fb 00 b0 d5 86 cmp $0xffffffff86d5b000,%rbx 10: 72 0c jb 0x1e 12: 31 c0 xor %eax,%eax 14: 48 81 fb 4a aa eb 86 cmp $0xffffffff86ebaa4a,%rbx 1b: 0f 92 c0 setb %al 1e: 5b pop %rbx 1f: e9 a4 1b 65 03 jmpq 0x3651bc8 24: b8 01 00 00 00 mov $0x1,%eax 29: 5b pop %rbx * 2a: e9 99 1b 65 03 jmpq 0x3651bc8 <-- trapping instruction 2f: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 36: 00 00 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop