watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.0:12180] Modules linked in: irq event stamp: 3467125 hardirqs last enabled at (3467124): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3467125): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3441788): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3441791): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 12180 Comm: syz-executor.0 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x1f/0xc0 Code: 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 48 89 fd 48 83 ec 08 e8 3f ff ff ff 85 c0 74 0f b8 01 00 00 00 48 83 c4 08 5d 7c 87 62 03 e8 77 25 17 00 84 c0 74 33 48 89 ef e8 3b f5 1b 00 RSP: 0018:ffff88806ce09668 EFLAGS: 00000296 RAX: 0000000000000001 RBX: ffffffff8338b5d5 RCX: 0000000000000001 RDX: 1ffff1100d9c12de RSI: ffff88806ce09de8 RDI: ffffffff8338b5d5 RBP: ffff88806ce096f0 R08: 0000000000000001 R09: ffff88806ce096d8 R10: 000000000003c001 R11: 00000000000b96bc R12: ffff88806ce09760 R13: 0000000000000000 R14: ffff88803f219b80 R15: 0000000000082820 FS: 00007f7abdc02700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557e464c58 CR3: 0000000040190000 CR4: 0000000000350ef0 Call Trace: __kernel_text_address+0xd/0x40 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_node_noprof+0x14c/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 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:ffff88803d8c74a0 EFLAGS: 00000246 RAX: ffff88801a6f3cb8 RBX: ffff88801a6f3de0 RCX: ffffea000069bcc0 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: ffff888008c4f780 R08: ffff88800c7f7000 R09: 00000000000d000b R10: ffffea000031fd00 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803d8c74d8 R14: ffff88800c7f7000 R15: ffff88800c7f7000 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 __kmalloc_cache_noprof+0x149/0x3e0 ipv6_add_dev+0xfc/0x1370 addrconf_notify+0x67a/0x1920 raw_notifier_call_chain+0xd6/0x140 call_netdevice_notifiers_info+0xbe/0x140 register_netdevice+0x1559/0x1ab0 register_netdev+0x31/0x60 sit_init_net+0x28b/0x5c0 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e00 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7ac068cb19 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:00007f7abdc02188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f7ac079ff60 RCX: 00007f7ac068cb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f7ac06e6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe92fe232f R14: 00007f7abdc02300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. EXT4-fs (loop2): unmounting filesystem 00000000-0000-0000-0000-000000000000. ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 66 0f 1f 00 nopw (%rax) f: 55 push %rbp 10: 48 89 fd mov %rdi,%rbp 13: 48 83 ec 08 sub $0x8,%rsp 17: e8 3f ff ff ff callq 0xffffff5b 1c: 85 c0 test %eax,%eax 1e: 74 0f je 0x2f 20: b8 01 00 00 00 mov $0x1,%eax 25: 48 83 c4 08 add $0x8,%rsp 29: 5d pop %rbp * 2a: e9 7c 87 62 03 jmpq 0x36287ab <-- trapping instruction 2f: e8 77 25 17 00 callq 0x1725ab 34: 84 c0 test %al,%al 36: 74 33 je 0x6b 38: 48 89 ef mov %rbp,%rdi 3b: e8 3b f5 1b 00 callq 0x1bf57b