watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.1:10015] Modules linked in: irq event stamp: 2729863 hardirqs last enabled at (2729862): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2729863): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2705910): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2705913): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 10015 Comm: syz-executor.1 Not tainted 6.12.0-rc5-next-20241104 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x0/0x170 Code: 49 c7 c4 ea ff ff ff eb c7 e8 1c 96 44 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 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 53 48 89 fb 48 83 c7 RSP: 0018:ffff88806cf090d0 EFLAGS: 00000286 RAX: ffffffff843525c0 RBX: ffffffff813ef450 RCX: 0000000000000001 RDX: 1ffff1100d9e1226 RSI: ffffffff843525c0 RDI: ffff88806cf091a0 RBP: ffff88806cf09170 R08: 0000000000000001 R09: ffff88806cf09118 R10: 000000000003c001 R11: 00000000000b30c3 R12: ffff88806cf091a0 R13: 0000000000000000 R14: ffff888041e49b80 R15: 0000000000092820 FS: 00007f54a2b4a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc62b766ae0 CR3: 0000000042592000 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_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/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+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:write_comp_data+0xa/0xa0 Code: 48 c7 c0 f4 ff ff ff eb 92 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 65 8b 05 0e cc b1 7e <65> 48 8b 15 fe cb b1 7e a9 00 01 ff 00 74 27 f6 c4 01 74 1d a9 00 RSP: 0018:ffff88803e39f900 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83f3b3f4 RDX: 0000000000000012 RSI: 0000000000000100 RDI: 0000000000000005 RBP: dffffc0000000000 R08: 0000000000000001 R09: fffffbfff0fdc5e5 R10: 0000000000000012 R11: 00000000000c33ea R12: ffff88803ec1a000 R13: ffff88803ec1a000 R14: 0000000000000000 R15: 0000000000000012 addrconf_ifdown.isra.0+0x564/0x1710 addrconf_notify+0x10b/0x1920 raw_notifier_call_chain+0xd6/0x140 call_netdevice_notifiers_info+0xbe/0x140 unregister_netdevice_many_notify+0x6eb/0x1890 unregister_netdevice_queue+0x224/0x2e0 __tun_detach+0xfa4/0x1290 tun_chr_close+0xc2/0x230 __fput+0x3fa/0xb40 task_work_run+0x173/0x280 syscall_exit_to_user_mode+0x1d0/0x1e0 do_syscall_64+0xcc/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f54a55d4b19 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:00007f54a2b4a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f54a56e7f60 RCX: 00007f54a55d4b19 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000006 RBP: 00007f54a562ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1b5180bf R14: 00007f54a2b4a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 SELinux: Context system_u:object_r:nvram_device_t: is not valid (left unmapped). loop3: detected capacity change from 0 to 2048 EXT4-fs (loop3): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000. loop3: detected capacity change from 0 to 40 syz-executor.3: attempt to access beyond end of device loop3: rw=2049, sector=40, nr_sectors = 4 limit=40 buffer_io_error: 6 callbacks suppressed Buffer I/O error on dev loop3, logical block 10, lost async page write syz-executor.3: attempt to access beyond end of device loop3: rw=2049, sector=44, nr_sectors = 4 limit=40 syz-executor.3: attempt to access beyond end of device loop3: rw=2049, sector=44, nr_sectors = 4 limit=40 ---------------- Code disassembly (best guess): 0: 49 c7 c4 ea ff ff ff mov $0xffffffffffffffea,%r12 7: eb c7 jmp 0xffffffd0 9: e8 1c 96 44 03 callq 0x344962a e: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 15: 00 00 00 18: 66 90 xchg %ax,%ax 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: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 35: fc ff df 38: 55 push %rbp 39: 53 push %rbx 3a: 48 89 fb mov %rdi,%rbx 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c7 .byte 0xc7