watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.5:5926] Modules linked in: irq event stamp: 8550707 hardirqs last enabled at (8550706): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (8550707): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (8485702): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (8485705): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5926 Comm: syz-executor.5 Not tainted 6.2.0-rc2-next-20230106 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0xaf/0x170 Code: c0 03 38 d0 7c 08 84 d2 0f 85 98 00 00 00 8b 43 0c 85 c0 75 57 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 <0f> 85 9a 00 00 00 8d 45 01 89 43 10 48 8b 03 48 8d 2c e8 48 b8 00 RSP: 0018:ffff88806ce09650 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806ce09738 RCX: 0000000000000000 RDX: 1ffff1100d9c12e7 RSI: ffffffff82ff9fd6 RDI: ffff88806ce09744 RBP: 000000000000000a R08: ffffffff862f6c3a R09: ffffffff862f6c3e R10: ffffed100d9c12db R11: ffff88806ce096b0 R12: ffff88806ce09738 R13: 0000000000000000 R14: ffff88801e5ed040 R15: 00000000000000f0 FS: 00007f075be26700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fecfcf3e998 CR3: 000000001c59c000 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+0x5c/0x70 kmem_cache_alloc+0x172/0x300 __create_object+0x3d/0xc40 kmem_cache_alloc_node+0x215/0x310 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 e6 bb e7 fc 48 89 ef e8 2e 33 e8 fc 80 e7 02 74 06 e8 84 2e 0c fd fb bf 01 00 00 00 99 80 dd fc 65 8b 05 ba 2e bf 7b 85 c0 74 07 5b 5d e9 6b 29 00 RSP: 0018:ffff888046fdf6c0 EFLAGS: 00000206 RAX: 00000000007df655 RBX: 0000000000000287 RCX: ffffffff812b788f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff856d1c00 R08: 0000000000000001 R09: ffffffff8764e90f R10: fffffbfff0ec9d21 R11: 0000000000000001 R12: 0000000000000287 R13: ffff88800e8a2048 R14: ffff888008783640 R15: ffff8880449d4a00 kmemleak_free+0x18a/0x200 __kmem_cache_free+0x8b/0x2f0 __free_slab+0x73/0x100 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc_node+0x187/0x310 __alloc_skb+0x21a/0x310 inet_netconf_notify_devconf+0xe1/0x260 devinet_exit_net+0x113/0x280 ops_exit_list+0xb3/0x180 setup_net+0x61d/0x9d0 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2a5e/0x7390 kernel_clone+0xeb/0x8c0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f075e8b0b19 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:00007f075be26188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f075e9c3f60 RCX: 00007f075e8b0b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f075e90af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffbf93846f R14: 00007f075be26300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.2.0-rc2-next-20230106 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc90 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 e6 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 fe 1f 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:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff844463cb RDX: fffffbfff0b48a71 RSI: 0000000000000004 RDI: ffffffff85a45380 RBP: ffffffff85a45380 R08: 0000000000000000 R09: ffffffff85a45383 R10: fffffbfff0b48a70 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48a70 R14: 0000000000000001 R15: 1ffff1100d9e1346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe5b544f010 CR3: 00000000194c8000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: de fe fd cc cc cc cc cc cc cc cc 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 a3 3e 3e 00 fb f4 a0 44 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 RSP: 0018:ffff888008df7e58 EFLAGS: 00000202 RAX: ffffffff84443f90 RBX: ffff888008d85040 RCX: ffffffff84424d32 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf34f83 R10: ffffed100d9e69f0 R11: 0000000000000001 R12: ffffed10011b0a08 R13: ffffffff85d0c210 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x88/0xd0 do_idle+0x3bd/0x530 cpu_startup_entry+0x18/0x20 start_secondary+0x1cc/0x220 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 38 d0 cmp %dl,%al 2: 7c 08 jl 0xc 4: 84 d2 test %dl,%dl 6: 0f 85 98 00 00 00 jne 0xa4 c: 8b 43 0c mov 0xc(%rbx),%eax f: 85 c0 test %eax,%eax 11: 75 57 jne 0x6a 13: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1a: fc ff df 1d: 48 89 da mov %rbx,%rdx 20: 48 c1 ea 03 shr $0x3,%rdx 24: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 28: 0f 85 9a 00 00 00 jne 0xc8 <-- trapping instruction 2e: 8d 45 01 lea 0x1(%rbp),%eax 31: 89 43 10 mov %eax,0x10(%rbx) 34: 48 8b 03 mov (%rbx),%rax 37: 48 8d 2c e8 lea (%rax,%rbp,8),%rbp 3b: 48 rex.W 3c: b8 .byte 0xb8