watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:8394] Modules linked in: irq event stamp: 3893237 hardirqs last enabled at (3893236): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3893237): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (3808330): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (3808345): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 8394 Comm: syz-executor.2 Not tainted 6.5.0-rc3-next-20230726 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xe/0x170 Code: 89 df e8 d5 9d 46 00 e9 3e fd ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806ce096a0 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffffffff813b57a0 RCX: 0000000000000001 RDX: 1ffff1100d9c12e0 RSI: ffffffff84360893 RDI: ffff88806ce09770 RBP: ffff88806ce09740 R08: 0000000000000001 R09: ffff88806ce096e8 R10: 0000000000038001 R11: 00000000000b01d4 R12: ffff88806ce09770 R13: 0000000000000000 R14: ffff88800f4551c0 R15: 0000000000000000 FS: 00007fb9e125a700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f82727e5718 CR3: 0000000016c04000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x199/0x3b0 __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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__slab_free+0x92/0x3e0 Code: 0f 94 44 24 2f 0f b6 44 24 2f 66 45 85 f6 74 07 45 31 c9 84 c0 74 0e 45 31 c9 80 7c 24 28 00 0f 84 da 00 00 00 4c 8b 44 24 58 <41> f6 47 0b 40 0f 85 b5 00 00 00 9c 58 fa f6 c4 02 75 68 48 89 d9 RSP: 0018:ffff8880431c76a0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff88801023f000 RCX: ffff88801023f000 RDX: 00000000000d000d RSI: ffff88801023f000 RDI: ffff88800844f780 RBP: ffff8880431c7738 R08: 00000000800d000c R09: 0000000000000000 R10: ffffea0000408fc0 R11: 0000000000000001 R12: ffffea0000408fc0 R13: 0000000000000000 R14: 00000000000d000c R15: ffff88800844f780 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 __kmem_cache_alloc_node+0x187/0x310 __kmalloc_node_track_caller+0x4e/0x160 kmemdup+0x2c/0x60 ipv6_sysctl_net_init+0x30/0x2a0 ops_init+0xbb/0x6b0 setup_net+0x3d9/0x990 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2b78/0x7320 kernel_clone+0xeb/0x810 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fb9e3ce4b19 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:00007fb9e125a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fb9e3df7f60 RCX: 00007fb9e3ce4b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fb9e3d3ef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8e7b691f R14: 00007fb9e125a300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.5.0-rc3-next-20230726 #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 5a 21 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806cf09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff845b6f2b RDX: fffffbfff0b4ddd9 RSI: 0000000000000004 RDI: ffffffff85a6eec0 RBP: ffffffff85a6eec0 R08: 0000000000000000 R09: fffffbfff0b4ddd8 R10: ffffffff85a6eec3 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4ddd8 R14: 0000000000000001 R15: 1ffff1100d9e1348 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55533070fa CR3: 000000000e9ec000 CR4: 0000000000350ee0 Call Trace: 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 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 63 69 29 00 fb f4 e9 fb 7a 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff888008e0fe70 EFLAGS: 00000202 RAX: 000000000038bfcd RBX: 0000000000000001 RCX: ffffffff8459066e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8128e0f5 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6a00 R10: ffff88806cf35003 R11: 0000000000000001 R12: ffffffff85d4a350 R13: 1ffff110011c1fd3 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 start_secondary+0x1ba/0x210 secondary_startup_64_no_verify+0x179/0x17b hpet: Lost 4 RTC interrupts hpet: Lost 2 RTC interrupts ---------------- Code disassembly (best guess): 0: 89 df mov %ebx,%edi 2: e8 d5 9d 46 00 callq 0x469ddc 7: e9 3e fd ff ff jmpq 0xfffffd4a c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: f3 0f 1e fa endbr64 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: 48 89 fb mov %rdi,%rbx 2f: 48 83 c7 10 add $0x10,%rdi 33: 48 89 fa mov %rdi,%rdx 36: 48 c1 ea 03 shr $0x3,%rdx 3a: 48 83 ec 08 sub $0x8,%rsp 3e: 0f .byte 0xf 3f: b6 .byte 0xb6