watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:8384] Modules linked in: irq event stamp: 4844281 hardirqs last enabled at (4844280): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4844281): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4825654): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4825657): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 8384 Comm: syz-executor.5 Not tainted 6.2.0-rc3-next-20230110 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kasan_quarantine_put+0x91/0x1f0 Code: c7 45 00 00 00 00 00 48 03 58 10 48 89 58 10 48 81 fb 00 00 10 00 77 63 41 bc 01 00 00 00 4d 85 ed 74 43 e8 f1 ec d2 ff fb 5b <44> 89 e0 5d 41 5c 41 5d 41 5e e9 94 f0 c6 02 e8 1b ee d2 ff 48 c7 RSP: 0018:ffff88806cf09bf8 EFLAGS: 00000206 RAX: 000000000049eae4 RBX: ffff888035f33800 RCX: ffffffff812b79af RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff888035f33800 R08: 0000000000000001 R09: ffffffff8765291f R10: fffffbfff0eca523 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000200 R14: 0000000000000002 R15: ffff88801f3d8e30 FS: 00007fcca067d700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556d9dc58 CR3: 0000000046422000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __kmem_cache_free+0xd1/0x2f0 skb_release_data+0x6d8/0x810 consume_skb+0xcb/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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:rcu_preempt_deferred_qs_irqrestore+0x142/0xf00 Code: 84 f6 75 3c 41 f7 c4 00 02 00 00 75 13 48 83 c4 50 5b 5d 41 5c 41 5d 41 5e 41 5f e9 ec 09 10 03 e8 33 06 1c 00 fb 48 83 c4 50 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 d3 09 10 03 e8 ea 44 ff ff eb 8e RSP: 0018:ffff888034d470f8 EFLAGS: 00000282 RAX: 000000000012e945 RBX: ffff8880485f8000 RCX: ffffffff812b79af RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88806cf3a0c0 R08: 0000000000000001 R09: ffffffff8765291f R10: fffffbfff0eca523 R11: 0000000000000001 R12: 0000000000000246 R13: ffff88806cf3a0d1 R14: 0000000000000100 R15: ffff8880485f83f8 __rcu_read_unlock+0x289/0x520 __is_insn_slot_addr+0x12f/0x290 kernel_text_address+0x5b/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x7f/0x90 __kmalloc_node_track_caller+0x53/0xb0 __alloc_skb+0xe9/0x310 alloc_uevent_skb+0x7b/0x210 kobject_uevent_env+0xcba/0xfa0 device_add+0xaf1/0x1ec0 netdev_register_kobject+0x17e/0x3b0 register_netdevice+0xd60/0x1530 register_netdev+0x31/0x60 loopback_net_init+0x7a/0x170 ops_init+0xbb/0x6c0 setup_net+0x40c/0x9d0 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2a5e/0x7390 kernel_clone+0xeb/0x8c0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fcca3107b19 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:00007fcca067d188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fcca321af60 RCX: 00007fcca3107b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fcca3161f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd7a1e341f R14: 00007fcca067d300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 loop6: detected capacity change from 0 to 40 kworker/u4:7: attempt to access beyond end of device loop6: rw=1, sector=124, nr_sectors = 4 limit=40 Buffer I/O error on dev loop6, logical block 31, lost async page write ---------------- Code disassembly (best guess): 0: c7 45 00 00 00 00 00 movl $0x0,0x0(%rbp) 7: 48 03 58 10 add 0x10(%rax),%rbx b: 48 89 58 10 mov %rbx,0x10(%rax) f: 48 81 fb 00 00 10 00 cmp $0x100000,%rbx 16: 77 63 ja 0x7b 18: 41 bc 01 00 00 00 mov $0x1,%r12d 1e: 4d 85 ed test %r13,%r13 21: 74 43 je 0x66 23: e8 f1 ec d2 ff callq 0xffd2ed19 28: fb sti 29: 5b pop %rbx * 2a: 44 89 e0 mov %r12d,%eax <-- trapping instruction 2d: 5d pop %rbp 2e: 41 5c pop %r12 30: 41 5d pop %r13 32: 41 5e pop %r14 34: e9 94 f0 c6 02 jmpq 0x2c6f0cd 39: e8 1b ee d2 ff callq 0xffd2ee59 3e: 48 rex.W 3f: c7 .byte 0xc7