watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.2:19597] Modules linked in: irq event stamp: 4716503 hardirqs last enabled at (4716502): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4716503): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4680768): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4680771): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 19597 Comm: syz-executor.2 Not tainted 6.2.0-rc3-next-20230110 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x175/0x2130 Code: 80 3c 11 00 0f 85 2e 17 00 00 4d 8b 7e 58 3c 01 49 83 df 00 4d 85 ff 0f 84 95 03 00 00 49 81 ff 00 00 00 81 0f 82 41 01 00 00 <49> 81 ff 00 00 80 84 0f 83 34 01 00 00 44 8b 1d 4f 45 18 04 4c 89 RSP: 0018:ffff88806ce09760 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 1ffff1100d9c1307 RDX: dffffc0000000000 RSI: ffffffff81385da0 RDI: 0000000000000001 RBP: ffff88806ce09838 R08: ffffffff8604aeb6 R09: ffffffff8604aeba R10: ffffed100d9c1309 R11: ffff88806ce09820 R12: ffff88806ce09821 R13: ffff88806ce09840 R14: ffff88806ce097e0 R15: ffffffff81385d9f FS: 00007f8f957e1700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000010318000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b4/0xc40 __kmem_cache_alloc_node+0x1ed/0x2f0 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 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:strlen+0x22/0xa0 Code: 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 fd 53 48 c1 ea 03 48 83 ec 08 0f b6 04 02 <48> 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 50 80 7d 00 00 74 3d 48 bb RSP: 0018:ffff88803214f458 EFLAGS: 00000292 RAX: 0000000000000000 RBX: ffff88803b3c3990 RCX: 0000000000000000 RDX: 1ffffffff091f1ec RSI: ffffffff856c98e0 RDI: ffffffff848f8f60 RBP: ffffffff848f8f60 R08: 0000000000000000 R09: 0000000000000001 R10: fffffbfff0ba1d52 R11: 0000000000000001 R12: 1ffff11006429e97 R13: ffffffff8550e4c0 R14: ffffffff856c98e0 R15: ffff88803214f538 perf_trace_lock_acquire+0xc3/0x530 trace_lock_acquire+0x105/0x1c0 lock_acquire+0x32/0xc0 fs_reclaim_acquire+0xda/0x170 kmem_cache_alloc+0x40/0x300 __proc_create+0x2b3/0x8b0 proc_create_reg+0xb6/0x180 proc_create_seq_private+0x90/0x180 xt_proto_init+0x2c8/0x6f0 ops_init+0xbb/0x6c0 setup_net+0x40c/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: 0033:0x7f8f9826bb19 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:00007f8f957e1188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f8f9837ef60 RCX: 00007f8f9826bb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f8f982c5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb79d0def R14: 00007f8f957e1300 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): 0: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) 4: 0f 85 2e 17 00 00 jne 0x1738 a: 4d 8b 7e 58 mov 0x58(%r14),%r15 e: 3c 01 cmp $0x1,%al 10: 49 83 df 00 sbb $0x0,%r15 14: 4d 85 ff test %r15,%r15 17: 0f 84 95 03 00 00 je 0x3b2 1d: 49 81 ff 00 00 00 81 cmp $0xffffffff81000000,%r15 24: 0f 82 41 01 00 00 jb 0x16b * 2a: 49 81 ff 00 00 80 84 cmp $0xffffffff84800000,%r15 <-- trapping instruction 31: 0f 83 34 01 00 00 jae 0x16b 37: 44 8b 1d 4f 45 18 04 mov 0x418454f(%rip),%r11d # 0x418458d 3e: 4c rex.WR 3f: 89 .byte 0x89