watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.5:13839] Modules linked in: irq event stamp: 2522315 hardirqs last enabled at (2522314): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2522315): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2519786): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2519789): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 13839 Comm: syz-executor.5 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xc27/0x2490 Code: 41 03 49 89 c0 49 c1 e8 03 41 0f b6 34 30 49 89 f8 41 83 e0 07 44 38 c2 41 0f 9e c0 84 d2 0f 95 c2 41 84 d0 0f 85 51 17 00 00 <83> e0 07 40 38 c6 0f 9e c2 40 84 f6 0f 95 c0 84 c2 0f 85 3a 17 00 RSP: 0018:ffff88806cf09298 EFLAGS: 00000246 RAX: ffffffff86bb5f4b RBX: 0000000000000002 RCX: ffffffff86bb5f48 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86bb5f4a RBP: ffff88806cf09360 R08: 0000000000000001 R09: ffff88806cf09348 R10: 000000000003c001 R11: 00000000000b7e60 R12: ffff88806cf09368 R13: ffff88806cf09350 R14: ffff88806cf09c50 R15: ffff88806cf09308 FS: 00007ff67de63700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561b0249cbb0 CR3: 0000000015bf6000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 __kmalloc_noprof+0x37e/0x4b0 cfg80211_inform_single_bss_data+0x4f1/0x1c50 cfg80211_inform_bss_data+0x20f/0x3510 cfg80211_inform_bss_frame_data+0x250/0x690 ieee80211_bss_info_update+0x2f6/0xa90 ieee80211_scan_rx+0x474/0xac0 ieee80211_rx_list+0x1e38/0x2840 ieee80211_rx_napi+0xdc/0x3b0 ieee80211_handle_queued_frames+0xd9/0x130 tasklet_action_common+0x235/0x3b0 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:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 14 9a ab ff 4d 85 ed 74 06 e8 8a 62 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff8880301ef100 EFLAGS: 00000246 RAX: 00000000002548d7 RBX: ffffea00003bb100 RCX: 1ffffffff0fdfecf RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81849d96 RBP: ffff88800969f500 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 00000000000007e0 R12: ffff88806cf434f0 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800eec4900 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __kernfs_new_node+0xd4/0x850 kernfs_new_node+0x18b/0x250 __kernfs_create_file+0x55/0x360 sysfs_add_file_mode_ns+0x21c/0x440 internal_create_group+0x573/0xeb0 internal_create_groups.part.0+0x90/0x140 sysfs_create_groups+0x29/0x50 device_add+0x680/0x17f0 netdev_register_kobject+0x182/0x3b0 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: 0033:0x7ff68090eb19 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:00007ff67de63188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007ff680a22020 RCX: 00007ff68090eb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007ff680968f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe42997ecf R14: 00007ff67de63300 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: 41 03 49 89 add -0x77(%r9),%ecx 4: c0 49 c1 e8 rorb $0xe8,-0x3f(%rcx) 8: 03 41 0f add 0xf(%rcx),%eax b: b6 34 mov $0x34,%dh d: 30 49 89 xor %cl,-0x77(%rcx) 10: f8 clc 11: 41 83 e0 07 and $0x7,%r8d 15: 44 38 c2 cmp %r8b,%dl 18: 41 0f 9e c0 setle %r8b 1c: 84 d2 test %dl,%dl 1e: 0f 95 c2 setne %dl 21: 41 84 d0 test %dl,%r8b 24: 0f 85 51 17 00 00 jne 0x177b * 2a: 83 e0 07 and $0x7,%eax <-- trapping instruction 2d: 40 38 c6 cmp %al,%sil 30: 0f 9e c2 setle %dl 33: 40 84 f6 test %sil,%sil 36: 0f 95 c0 setne %al 39: 84 c2 test %al,%dl 3b: 0f .byte 0xf 3c: 85 3a test %edi,(%rdx) 3e: 17 (bad)