watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:10603] Modules linked in: irq event stamp: 2573571 hardirqs last enabled at (2573570): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2573571): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2562260): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2562301): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 10603 Comm: syz-executor.3 Not tainted 6.12.0-next-20241125 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x65/0x170 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e ad 00 00 00 31 c0 3b 6b 08 0f 83 81 00 00 00 <48> b8 00 00 00 00 00 fc ff df 48 8d 7b 0c 48 89 fa 48 c1 ea 03 0f RSP: 0018:ffff88806cf097f8 EFLAGS: 00000287 RAX: 0000000000000000 RBX: ffff88806cf098e0 RCX: 0000000000000001 RDX: 1ffff1100d9e131d RSI: ffffffff8118af79 RDI: ffff88806cf098e8 RBP: 000000000000002b R08: 0000000000000001 R09: ffff88806cf09858 R10: 000000000003c001 R11: 000000000000775c R12: ffff88806cf098e0 R13: 0000000000000000 R14: ffff88801d100000 R15: ffff88803f6bc300 FS: 00007f8baa82b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffce862bff0 CR3: 000000003bfa2000 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/0xa70 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:ffff88803d22f140 EFLAGS: 00000246 RAX: ffff888018f1f4a0 RBX: ffff888009f73128 RCX: ffffea000063c7c0 RDX: 0000000000000000 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: ffff888008c4f780 R08: ffff888013748940 R09: 00000000000d000b R10: ffffea00004dd200 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803d22f178 R14: ffff888013748940 R15: ffff888013748940 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_node_track_caller_noprof+0x18f/0x490 kstrdup+0x3e/0xc0 kstrdup_const+0x57/0x80 __kernfs_new_node+0x9d/0x850 kernfs_new_node+0x18b/0x250 kernfs_create_dir_ns+0x4d/0x160 sysfs_create_dir_ns+0x12b/0x2a0 kobject_add_internal+0x24c/0x9a0 kobject_init_and_add+0x101/0x170 net_rx_queue_update_kobjects+0x279/0x570 netdev_register_kobject+0x26c/0x3b0 register_netdevice+0x1332/0x1ab0 register_netdev+0x31/0x60 loopback_net_init+0x7a/0x180 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e90 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8bad2b5b19 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:00007f8baa82b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f8bad3c8f60 RCX: 00007f8bad2b5b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f8bad30ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca14a3a8f R14: 00007f8baa82b300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 48 89 fisttps -0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax c: 84 c0 test %al,%al e: 74 08 je 0x18 10: 3c 03 cmp $0x3,%al 12: 0f 8e ad 00 00 00 jle 0xc5 18: 31 c0 xor %eax,%eax 1a: 3b 6b 08 cmp 0x8(%rbx),%ebp 1d: 0f 83 81 00 00 00 jae 0xa4 * 23: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2a: fc ff df 2d: 48 8d 7b 0c lea 0xc(%rbx),%rdi 31: 48 89 fa mov %rdi,%rdx 34: 48 c1 ea 03 shr $0x3,%rdx 38: 0f .byte 0xf