loop6: detected capacity change from 0 to 8260 watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:17672] Modules linked in: irq event stamp: 4769083 hardirqs last enabled at (4769082): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4769083): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4701360): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4701371): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 17672 Comm: syz-executor.0 Not tainted 6.13.0-rc2-next-20241212 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x13/0xc0 Code: bb 66 0f 1f 44 00 00 90 90 90 90 90 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 e9 ac 80 65 03 e8 97 22 17 00 RSP: 0018:ffff88806cf09728 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff84a54ee0 RCX: ffffffff86799f01 RDX: 1ffff1100d9e12f8 RSI: 0000000000000000 RDI: ffffffff84a54ee0 RBP: ffffffff84a54ee0 R08: ffffffff86799f7e R09: ffff88806cf097a8 R10: 000000000003a7f3 R11: 0000000000008481 R12: ffff88806cf09830 R13: 0000000000000000 R14: ffff88802c8b1bc0 R15: 0000000000082820 FS: 00007f0d9d153700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0d9d173108 CR3: 000000002ff7a000 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 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/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:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 66 af a8 fc 48 89 ef e8 ce 1d a9 fc 80 e7 02 74 06 e8 d4 75 d2 fc fb 65 ff 0d d4 1e 5c 7b <74> 07 5b 5d e9 a3 1e 00 00 0f 1f 44 00 00 5b 5d e9 97 1e 00 00 0f RSP: 0018:ffff8880407d7368 EFLAGS: 00000246 RAX: 000000000047bcb9 RBX: 0000000000000246 RCX: 1ffffffff0fdfed8 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84a7882c RBP: ffffffff85e8e740 R08: 0000000000000001 R09: fffffbfff0fddde1 R10: ffffffff87eeef0f R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880407d73e0 R15: ffff88803d7f0720 stack_depot_save_flags+0x3ea/0x9b0 kasan_save_stack+0x34/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x38/0x50 kfree+0x132/0x480 __free_slab+0x10d/0x130 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 inet_netconf_notify_devconf+0xe1/0x260 inetdev_event+0xf92/0x1860 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+0x401/0xb50 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: 0033:0x7f0d9fbfeb19 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:00007f0d9d153188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f0d9fd12020 RCX: 00007f0d9fbfeb19 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000007 RBP: 00007f0d9fc58f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2c812f8f R14: 00007f0d9d153300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc2-next-20241212 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x242/0xb60 Code: 02 48 89 e8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 85 08 00 00 b8 01 00 00 00 66 89 45 00 e9 bf fe ff ff 89 44 24 38 f3 90 5b fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 RSP: 0018:ffff88806ce099e0 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff84a7907f RDX: fffffbfff0c1b9cd RSI: 0000000000000004 RDI: ffffffff860dce60 RBP: ffffffff860dce60 R08: 0000000000000000 R09: fffffbfff0c1b9cc R10: ffffffff860dce63 R11: 0000000000000001 R12: 1ffff1100d9c133d R13: 0000000000000003 R14: fffffbfff0c1b9cc R15: ffff88806ce09a18 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bf68166618 CR3: 000000000a706000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/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:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 99 17 1d 00 0f 1f 44 00 00 fb f4 e9 0c 2f 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85a07e10 EFLAGS: 00000202 RAX: 0000000000207461 RBX: 0000000000000000 RCX: ffffffff84a56827 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff814b2ada RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6cba R10: ffff88806ce365d3 R11: 0000000000000000 R12: ffffffff863fbd90 R13: 1ffffffff0b40fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 rest_init+0x164/0x290 start_kernel+0x40d/0x530 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcb/0xe0 common_startup_64+0x12c/0x138 ---------------- Code disassembly (best guess): 0: bb 66 0f 1f 44 mov $0x441f0f66,%ebx 5: 00 00 add %al,(%rax) 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 66 0f 1f 00 nopw (%rax) 1b: 55 push %rbp 1c: 48 89 fd mov %rdi,%rbp 1f: 48 83 ec 08 sub $0x8,%rsp 23: e8 3f ff ff ff callq 0xffffff67 28: 85 c0 test %eax,%eax * 2a: 74 0f je 0x3b <-- trapping instruction 2c: b8 01 00 00 00 mov $0x1,%eax 31: 48 83 c4 08 add $0x8,%rsp 35: 5d pop %rbp 36: e9 ac 80 65 03 jmpq 0x36580e7 3b: e8 97 22 17 00 callq 0x1722d7