watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.2:9795] Modules linked in: irq event stamp: 4505773 hardirqs last enabled at (4505772): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4505773): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4468598): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4468601): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 9795 Comm: syz-executor.2 Not tainted 6.13.0-rc3-next-20241220 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_save+0x50/0xc0 Code: 24 08 dc 0b 77 85 48 c1 eb 03 48 c7 44 24 10 70 e7 5e 81 48 01 c3 c7 03 f1 f1 f1 f1 c7 43 04 00 00 00 f3 c7 43 08 f3 f3 f3 f3 <65> 48 8b 04 25 28 00 00 00 48 89 44 24 78 31 c0 48 89 7c 24 20 48 RSP: 0018:ffff88806ce09888 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffffed100d9c1311 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffff88806ce09918 RBP: ffff888008c4f780 R08: 0000000000000128 R09: ffff888039e541c0 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801b2eb600 FS: 00007f8a951cf700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000164c2000 CR4: 0000000000350ef0 Call Trace: kasan_save_stack+0x24/0x50 kasan_record_aux_stack+0x89/0xa0 __call_rcu_common.constprop.0+0x6a/0xb70 kmem_cache_free+0x2ae/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/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 77 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff88803dc17de0 EFLAGS: 00000246 RAX: ffff88800cea3080 RBX: ffff88803d9ed500 RCX: ffffea000033a8c0 RDX: 0000000000000000 RSI: ffff888008fff3c0 RDI: 0000000000080000 RBP: ffff888008fff3c0 R08: ffff88800cea3c60 R09: 0000000000800008 R10: ffffea000033a800 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803dc17e18 R14: ffff88800cea3c60 R15: ffff88800cea3c60 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_cache_noprof+0x149/0x3e0 fscontext_alloc_log+0x4a/0x1b0 __x64_sys_fsopen+0x157/0x240 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8a97c7ab19 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:00007f8a951cf188 EFLAGS: 00000246 ORIG_RAX: 00000000000001ae RAX: ffffffffffffffda RBX: 00007f8a97d8e020 RCX: 00007f8a97c7ab19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f8a97cd4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcbf8cc24f R14: 00007f8a951cf300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: 24 08 and $0x8,%al 2: dc 0b fmull (%rbx) 4: 77 85 ja 0xffffff8b 6: 48 c1 eb 03 shr $0x3,%rbx a: 48 c7 44 24 10 70 e7 movq $0xffffffff815ee770,0x10(%rsp) 11: 5e 81 13: 48 01 c3 add %rax,%rbx 16: c7 03 f1 f1 f1 f1 movl $0xf1f1f1f1,(%rbx) 1c: c7 43 04 00 00 00 f3 movl $0xf3000000,0x4(%rbx) 23: c7 43 08 f3 f3 f3 f3 movl $0xf3f3f3f3,0x8(%rbx) * 2a: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax <-- trapping instruction 31: 00 00 33: 48 89 44 24 78 mov %rax,0x78(%rsp) 38: 31 c0 xor %eax,%eax 3a: 48 89 7c 24 20 mov %rdi,0x20(%rsp) 3f: 48 rex.W