watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:8283] Modules linked in: irq event stamp: 5813995 hardirqs last enabled at (5813994): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5813995): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5810696): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5810699): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 8283 Comm: syz-executor.0 Not tainted 6.5.0-rc1-next-20230714 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__read_once_word_nocheck+0x3/0x10 Code: ff e8 71 8c 6e 00 e9 37 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 f8 c2 42 03 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffff88806cf09580 EFLAGS: 00000202 RAX: ffffffff8120ffd4 RBX: 0000000000000001 RCX: 0000000000000001 RDX: ffff888045d8fa01 RSI: ffff888045d8fa88 RDI: ffff888045d8fa88 RBP: ffff88806cf09650 R08: ffffffff860b8a48 R09: ffff88806cf09638 R10: 0000000000038001 R11: 0000000000009df0 R12: ffff88806cf09658 R13: ffff88806cf09640 R14: ffff888045d8fa90 R15: ffff88806cf095f8 FS: 00007f16de78a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005557db280618 CR3: 0000000021090000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0xa71/0x2490 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+0x17b/0x390 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x23d/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:lock_acquire+0x1c7/0x4c0 Code: ff ff 48 83 c4 28 65 0f c1 05 c5 ba 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:ffff888045d8f368 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff11008bb1e6f RCX: 0000000000000002 RDX: 1ffff110079e1b75 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff0f2f90f R10: ffffffff8797c87f R11: 0000000000000005 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff854c8358 R15: 0000000000000000 _raw_spin_lock+0x2b/0x40 pgd_free+0x4c/0x230 __mmdrop+0xd3/0x440 finish_task_switch.isra.0+0x470/0x830 __schedule+0x9b1/0x2b00 __cond_resched+0x46/0x70 kmem_cache_alloc+0x31e/0x390 __proc_create+0x2b3/0x8b0 proc_create_reg+0xb6/0x180 proc_create_data+0x89/0x1a0 cache_register_net+0x2db/0x5e0 unix_gid_cache_create+0x8b/0x130 sunrpc_init_net+0x76/0x190 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: 0033:0x7f16e1235b19 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:00007f16de78a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f16e1349020 RCX: 00007f16e1235b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f16e128ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe238c42f R14: 00007f16de78a300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.5.0-rc1-next-20230714 #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 4a 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:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8455bcbb RDX: fffffbfff0b4ce95 RSI: 0000000000000004 RDI: ffffffff85a674a0 RBP: ffffffff85a674a0 R08: 0000000000000000 R09: fffffbfff0b4ce94 R10: ffffffff85a674a3 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4ce94 R14: 0000000000000001 R15: 1ffff1100d9c1348 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe4cfa75650 CR3: 000000000f3e6000 CR4: 0000000000350ef0 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 a3 f7 2e 00 fb f4 e9 bb 56 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffffff85407e10 EFLAGS: 00000202 RAX: 00000000001f3725 RBX: 0000000000000000 RCX: ffffffff8453782e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8128ba15 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9c6a00 R10: ffff88806ce35003 R11: 0000000000000001 R12: ffffffff85d426d0 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+0x3c4/0x4e0 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xcf/0xe0 secondary_startup_64_no_verify+0x179/0x17b ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 71 8c 6e 00 callq 0x6e8c76 5: e9 37 fd ff ff jmpq 0xfffffd41 a: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 11: 00 00 00 14: 66 90 xchg %ax,%ax 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 48 8b 07 mov (%rdi),%rax * 29: e9 f8 c2 42 03 jmpq 0x342c326 <-- trapping instruction 2e: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 35: 00 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop