watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:4896] Modules linked in: irq event stamp: 5183079 hardirqs last enabled at (5183078): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5183079): [<ffffffff84504fff>] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5178250): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5178253): [<ffffffff8118dda3>] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 4896 Comm: syz-executor.4 Not tainted 6.4.0-rc6-next-20230613 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x170a/0x2490 Code: 48 39 dd 0f 87 cd f5 ff ff 48 39 d8 0f 86 c4 f5 ff ff 48 8d 53 08 48 39 d0 0f 93 c1 48 39 d5 0f 92 c0 84 c1 0f 84 ac f5 ff ff <48> 39 5c 24 08 0f 82 a1 f5 ff ff 48 b8 00 00 00 00 00 fc ff df 49 RSP: 0018:ffff88806cf09588 EFLAGS: 00000202 RAX: ffff888041968001 RBX: ffff888041967c88 RCX: 0000000000000001 RDX: ffff888041967c90 RSI: ffff888041967c78 RDI: ffff88806cf09608 RBP: ffff888041960000 R08: 0000000000000001 R09: ffff88806cf09638 R10: 0000000000038001 R11: 0000000000020ff1 R12: ffff88806cf09658 R13: ffff88806cf09640 R14: ffff888041967c78 R15: ffff88806cf095f8 FS: 00007f765267b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555566a6c58 CR3: 0000000039a2e000 CR4: 0000000000350ee0 Call Trace: <IRQ> arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x16b/0x370 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x238/0x3b0 __alloc_skb+0x28c/0x330 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb11/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__slab_free+0x15f/0x3e0 Code: 87 94 ff ff 88 44 24 18 e8 8e ab d2 ff fb 4c 8b 4c 24 08 0f b6 44 24 18 e9 6b ff ff ff 4c 89 e8 4c 89 c1 f0 49 0f c7 4c 24 20 <0f> 94 c0 e9 56 ff ff ff 66 90 4d 85 ed 74 44 49 8b 04 24 48 89 54 RSP: 0018:ffff888041967b70 EFLAGS: 00000242 RAX: 0000000000000000 RBX: ffff88800ebf3a00 RCX: 00000000800c000b RDX: 00000000000c000c RSI: ffff88800ebf3a00 RDI: ffff888008fce000 RBP: ffff888041967c08 R08: 00000000800c000b R09: 0000000000000000 R10: ffffea00003afcc0 R11: 0000000000000001 R12: ffffea00003afcc0 R13: 0000000000000000 R14: 00000000000c000b R15: ffff888008fce000 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_lru+0x247/0x680 __d_alloc+0x31/0x9c0 d_alloc_pseudo+0x1d/0x70 alloc_file_pseudo+0xd2/0x260 sock_alloc_file+0x53/0x1e0 __sys_socket+0x1ac/0x250 __x64_sys_socket+0x73/0xb0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f7655105b19 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:00007f765267b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f7655218f60 RCX: 00007f7655105b19 RDX: 0000000000000010 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007f765515ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcc899b35f R14: 00007f765267b300 R15: 0000000000022000 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0-rc6-next-20230613 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xb20 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 5c 09 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 6a 21 00 00 f3 90 <e9> 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8452a85b RDX: fffffbfff0b4c665 RSI: 0000000000000004 RDI: ffffffff85a63320 RBP: ffffffff85a63320 R08: 0000000000000000 R09: fffffbfff0b4c664 R10: ffffffff85a63323 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4c664 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f17ffc6fbe0 CR3: 000000000c6ea000 CR4: 0000000000350ef0 Call Trace: <NMI> </NMI> <IRQ> do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6e7/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 09 32 00 fb f4 <fa> e9 9b 55 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e10 EFLAGS: 00000206 RAX: 00000000000e7bd7 RBX: 0000000000000000 RCX: ffffffff8450650e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81288995 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6a00 R10: ffff88806ce35003 R11: 0000000000000001 R12: ffffffff85d3a1d0 R13: 1ffffffff0a80fc7 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 rest_init+0x168/0x290 arch_call_rest_init+0x13/0x40 start_kernel+0x3c9/0x4f0 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcf/0xe0 secondary_startup_64_no_verify+0x179/0x17b </TASK> syz-executor.7 (5093) used greatest stack depth: 24088 bytes left ---------------- Code disassembly (best guess): 0: 48 39 dd cmp %rbx,%rbp 3: 0f 87 cd f5 ff ff ja 0xfffff5d6 9: 48 39 d8 cmp %rbx,%rax c: 0f 86 c4 f5 ff ff jbe 0xfffff5d6 12: 48 8d 53 08 lea 0x8(%rbx),%rdx 16: 48 39 d0 cmp %rdx,%rax 19: 0f 93 c1 setae %cl 1c: 48 39 d5 cmp %rdx,%rbp 1f: 0f 92 c0 setb %al 22: 84 c1 test %al,%cl 24: 0f 84 ac f5 ff ff je 0xfffff5d6 * 2a: 48 39 5c 24 08 cmp %rbx,0x8(%rsp) <-- trapping instruction 2f: 0f 82 a1 f5 ff ff jb 0xfffff5d6 35: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3c: fc ff df 3f: 49 rex.WB