kworker/u9:6: attempt to access beyond end of device loop5: rw=1, sector=124, nr_sectors = 4 limit=40 buffer_io_error: 30 callbacks suppressed Buffer I/O error on dev loop5, logical block 31, lost async page write watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.6:10609] Modules linked in: irq event stamp: 2551591 hardirqs last enabled at (2551590): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2551591): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2533914): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2533917): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 10609 Comm: syz-executor.6 Not tainted 6.12.0-next-20241122 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x58a/0x2490 Code: 00 41 80 fe 04 0f 84 cc 0b 00 00 41 80 fe 05 0f 85 1a 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 <0f> 85 fe 17 00 00 48 89 c8 4d 8b 77 48 48 ba 00 00 00 00 00 fc ff RSP: 0018:ffff88806cf09738 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff86ae8446 RDX: 1ffff1100d9e12fe RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88806cf09800 R08: ffffffff86ae844a R09: ffff88806cf097e8 R10: 000000000003c001 R11: 0000000000095bc5 R12: ffff88806cf09808 R13: ffff88806cf097f0 R14: 0000000000000005 R15: ffff88806cf097a8 FS: 00007f5150aa2700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563fd75d7cf8 CR3: 000000000b708000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x87/0xf0 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 __alloc_skb+0x2ad/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/0xa70 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+0x96/0x160 Code: 0f 82 e0 00 00 00 48 c7 c2 00 00 00 80 48 2b 15 70 bc f1 03 48 01 ca 48 c1 ea 0c 48 c1 e2 06 48 03 15 4e bc f1 03 48 8b 72 08 <48> 89 d1 40 f6 c6 01 0f 85 a1 00 00 00 66 90 80 79 33 f5 ba 00 00 RSP: 0018:ffff888038037240 EFLAGS: 00000282 RAX: ffff88800c4094a0 RBX: ffff88800c4094a0 RCX: ffff88808c4094a0 RDX: ffffea0000310240 RSI: ffff888008c4f780 RDI: 0000000000080000 RBP: 0000000000000000 R08: ffff88800d1e1b90 R09: 00000000000d000b R10: ffffea0000347800 R11: 00000000000007e0 R12: 0000000000000000 R13: ffff888038037278 R14: ffff88800d1e1b90 R15: ffff88800d1e1b90 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_node_noprof+0x14c/0x3e0 __alloc_skb+0x2ad/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 default_device_exit_batch+0x6e6/0x920 ops_exit_list+0x12b/0x180 setup_net+0x492/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8e90 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f515354db19 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:00007f5150aa2188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f5153661020 RCX: 00007f515354db19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f51535a7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd80a028cf R14: 00007f5150aa2300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 00 41 80 add %al,-0x80(%rcx) 3: fe 04 0f incb (%rdi,%rcx,1) 6: 84 cc test %cl,%ah 8: 0b 00 or (%rax),%eax a: 00 41 80 add %al,-0x80(%rcx) d: fe 05 0f 85 1a 01 incb 0x11a850f(%rip) # 0x11a8522 13: 00 00 add %al,(%rax) 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 4c 89 ea mov %r13,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 fe 17 00 00 jne 0x182e <-- trapping instruction 30: 48 89 c8 mov %rcx,%rax 33: 4d 8b 77 48 mov 0x48(%r15),%r14 37: 48 rex.W 38: ba 00 00 00 00 mov $0x0,%edx 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff