watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:35601] Modules linked in: irq event stamp: 5335939 hardirqs last enabled at (5335938): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5335939): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5295402): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5295409): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 35601 Comm: syz-executor.5 Not tainted 6.4.0-rc7-next-20230622 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 f5 df d4 7e 83 f8 01 0f 85 8f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff88806ce095d8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff1100d9c12bd RCX: 0000000000000001 RDX: 1ffff110074d6b75 RSI: f74c1c1bef7db042 RDI: 00000000d224faf9 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff0ef8160 R10: ffffffff877c0b07 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8560b6c0 R15: 0000000000000000 FS: 00007eff57726700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556059c58 CR3: 00000000347d8000 CR4: 0000000000350ef0 Call Trace: __is_insn_slot_addr+0x41/0x290 kernel_text_address+0x48/0xc0 __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_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x198/0x3b0 __alloc_skb+0x28c/0x330 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3f6/0xfc0 ieee80211_beacon_get_tim+0xa1/0x550 mac80211_hwsim_beacon_tx+0x402/0x730 __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+0x15f/0x3e0 Code: 87 94 ff ff 88 44 24 18 e8 be d3 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:ffff888030fff5b0 EFLAGS: 00000242 RAX: 0000000000000000 RBX: ffff88800e46e260 RCX: 00000000800d000c RDX: 00000000000d000d RSI: ffff88800e46e260 RDI: ffff88800844f780 RBP: ffff888030fff648 R08: 00000000800d000c R09: 0000000000000000 R10: ffffea0000391b80 R11: 0000000080160004 R12: ffffea0000391b80 R13: 0000000000000000 R14: 00000000000d000c R15: ffff88800844f780 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x16b/0x370 __create_object+0x3c/0xc90 kmemleak_alloc_percpu+0xdf/0x150 pcpu_alloc+0x736/0x1020 __percpu_counter_init+0x111/0x2e0 ip6_route_net_init+0x4c/0x4e0 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/0x7d0 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7eff5a1b0b19 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:00007eff57726188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007eff5a2c3f60 RCX: 00007eff5a1b0b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007eff5a20af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdba919e0f R14: 00007eff57726300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 48 83 c4 28 add $0x28,%rsp 4: 65 0f c1 05 f5 df d4 xadd %eax,%gs:0x7ed4dff5(%rip) # 0x7ed4e001 b: 7e c: 83 f8 01 cmp $0x1,%eax f: 0f 85 8f 02 00 00 jne 0x2a4 15: 48 83 7c 24 08 00 cmpq $0x0,0x8(%rsp) 1b: 74 01 je 0x1e 1d: fb sti 1e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 25: fc ff df * 28: 48 01 c3 add %rax,%rbx <-- trapping instruction 2b: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 32: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 39: 00 3a: 48 rex.W 3b: 8b .byte 0x8b 3c: 84 .byte 0x84 3d: 24 .byte 0x24