watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.0:6066] Modules linked in: irq event stamp: 4340311 hardirqs last enabled at (4340310): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (4340311): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (4256552): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (4256561): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 6066 Comm: syz-executor.0 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x89/0xf0 Code: 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 d8 48 39 c1 <73> b0 4c 8d 63 fc 4c 39 e5 76 b3 4d 29 ee 49 c1 fe 02 4b 8d 04 76 RSP: 0018:ffff88806ce097b0 EFLAGS: 00000202 RAX: ffffffff818f22d5 RBX: ffffffff864cbacc RCX: ffffffff818f22dc RDX: 0000000000000000 RSI: ffffffff86844062 RDI: ffffffff864cba98 RBP: ffffffff864cbacc R08: ffffffff86844062 R09: ffff88806ce098a8 R10: 000000000003c001 R11: 0000000000024e8f R12: ffffffff864cbacc R13: ffffffff864cba98 R14: ffffffff864cbac8 R15: dffffc0000000000 FS: 00007f775bcba700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555559b92098 CR3: 000000003e05c000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b7/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x38/0x50 kmem_cache_free+0x138/0x470 kfree_skbmem+0x18a/0x1f0 consume_skb+0xdd/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/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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 91 a0 ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff888040687670 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000150013 RCX: 0000000000150014 RDX: ffff88803d406400 RSI: ffffea0000f50100 RDI: 0000000000089110 RBP: ffff888040687710 R08: 0000000000000001 R09: 0000000000150013 R10: ffffea0000f50100 R11: 0000000000000000 R12: ffffea0000f50100 R13: ffff88803d405e00 R14: 0000000000000000 R15: ffff88800969f500 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 __alloc_skb+0x2ad/0x370 alloc_uevent_skb+0x7b/0x210 kobject_uevent_env+0xa8c/0xf90 device_del+0x80b/0xd20 device_unregister+0x15/0x30 bdi_unregister+0x3ec/0x5b0 generic_shutdown_super+0x2a0/0x4f0 kill_anon_super+0x3a/0x60 v9fs_kill_super+0x3d/0xa0 deactivate_locked_super+0xbf/0x1a0 v9fs_mount+0x774/0x9b0 legacy_get_tree+0x109/0x220 vfs_get_tree+0x97/0x380 path_mount+0x13b2/0x1ec0 __x64_sys_mount+0x283/0x300 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f775e744b19 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:00007f775bcba188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f775e857f60 RCX: 00007f775e744b19 RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f775e79ef6d R08: 00000000200001c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc897ae1af R14: 00007f775bcba300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%ebx 4: 48 89 d8 mov %rbx,%rax 7: 48 c1 e8 03 shr $0x3,%rax b: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 10: 48 89 d8 mov %rbx,%rax 13: 83 e0 07 and $0x7,%eax 16: 83 c0 03 add $0x3,%eax 19: 38 d0 cmp %dl,%al 1b: 7c 04 jl 0x21 1d: 84 d2 test %dl,%dl 1f: 75 50 jne 0x71 21: 48 63 03 movslq (%rbx),%rax 24: 48 01 d8 add %rbx,%rax 27: 48 39 c1 cmp %rax,%rcx * 2a: 73 b0 jae 0xffffffdc <-- trapping instruction 2c: 4c 8d 63 fc lea -0x4(%rbx),%r12 30: 4c 39 e5 cmp %r12,%rbp 33: 76 b3 jbe 0xffffffe8 35: 4d 29 ee sub %r13,%r14 38: 49 c1 fe 02 sar $0x2,%r14 3c: 4b 8d 04 76 lea (%r14,%r14,2),%rax