I/O error, dev loop6, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 I/O error, dev loop4, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.3:7178] Modules linked in: irq event stamp: 18463041 hardirqs last enabled at (18463040): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (18463041): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (18453656): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (18453659): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 7178 Comm: syz-executor.3 Not tainted 6.1.0-rc5-next-20221115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x6f/0xf0 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806ce097d8 EFLAGS: 00000216 RAX: 1ffffffff0bb0a48 RBX: ffffffff85d85240 RCX: ffffffff8137f12f RDX: 0000000000000000 RSI: ffffffff860924d6 RDI: ffffffff85d8521c RBP: ffffffff85d8521c R08: ffffffff860924d6 R09: ffffffff86046a96 R10: ffffed100d9c1321 R11: 0000000000038001 R12: ffffffff85d85264 R13: ffffffff85d8521c R14: ffffffff85d8521c R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556727389a70 CR3: 000000000ea58000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 c6 31 ec fc 48 89 ef e8 8e a9 ec fc 80 e7 02 74 06 e8 94 18 10 fd fb bf 01 00 00 00 49 06 e2 fc 65 8b 05 da b0 c3 7b 85 c0 74 07 5b 5d e9 4b 29 00 RSP: 0018:ffff888037a473c8 EFLAGS: 00000206 RAX: 0000000000e40905 RBX: 0000000000000293 RCX: ffffffff812b698f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88806cf29080 R08: 0000000000000001 R09: ffffffff8762f84f R10: fffffbfff0ec5f09 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff888037a47408 R14: 1ffff11006f48e7d R15: 0000000000000000 del_timer_sync+0x1cb/0x270 __neigh_ifdown.isra.0+0x2da/0x380 neigh_ifdown+0x1f/0x30 rt6_disable_ip+0x60d/0x800 addrconf_ifdown.isra.0+0x11a/0x1770 addrconf_notify+0x15d/0x2440 raw_notifier_call_chain+0xb7/0x110 call_netdevice_notifiers_info+0xb5/0x130 unregister_netdevice_many_notify+0x8f4/0x15e0 unregister_netdevice_queue+0x209/0x2c0 __tun_detach+0x1001/0x12f0 tun_chr_close+0xc8/0x190 __fput+0x263/0xa40 task_work_run+0x174/0x280 do_exit+0xa8e/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f8fdc2a9c27 Code: Unable to access opcode bytes at 0x7f8fdc2a9bfd. RSP: 002b:00007f8fd97fefa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8fdc2a9c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f8fd97ff040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f8fd97ff000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1