netlink: 164 bytes leftover after parsing attributes in process `syz-executor.4'. watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.1:10142] Modules linked in: irq event stamp: 4971237 hardirqs last enabled at (4971236): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4971237): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (4934814): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (4934817): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 10142 Comm: syz-executor.1 Not tainted 6.3.0-rc3-next-20230324 #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 a5 44 d5 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:ffff88806ce09548 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff1100d9c12ab RCX: 0000000000000001 RDX: 1ffff11006b257db RSI: 2f6ba75030bfc40e RDI: 00000000cf324a25 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8777b9c7 R10: fffffbfff0eef738 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff85609dc0 R15: 0000000000000000 FS: 00007fa00cfc1700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563419d04050 CR3: 0000000044f50000 CR4: 0000000000350ef0 Call Trace: __is_insn_slot_addr+0x41/0x290 kernel_text_address+0x5b/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+0x189/0x3a0 __alloc_skb+0x28c/0x330 skb_copy+0x13d/0x3f0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb08/0x1330 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+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_get_return_address+0x5b/0xa0 Code: ff b2 35 03 48 b8 00 00 00 00 00 fc ff df 48 8d 6b 58 48 89 ea 48 c1 ea 03 80 3c 02 00 75 36 48 8b 7b 58 e8 a7 af 0c 00 85 c0 <74> cf 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 RSP: 0018:ffff888045b17538 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff888045b17550 RCX: ffff888045b17468 RDX: 1ffff11006b257da RSI: 0000000000000000 RDI: ffff88803592bed0 RBP: ffff888045b175a8 R08: 0000000000000001 R09: ffff88803592bed8 R10: fffffbfff0ba4b6a R11: 0000000000000001 R12: ffff888045b17618 R13: 0000000000000000 R14: ffff88803592b580 R15: ffff88800c882850 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b2/0xc90 __kmem_cache_alloc_node+0x1f8/0x310 __kmalloc_node_track_caller+0x4b/0x160 kmemdup+0x2c/0x60 unix_sysctl_register+0x3c/0x160 unix_net_init+0x54/0x310 ops_init+0xbb/0x6b0 setup_net+0x3d9/0x990 copy_net_ns+0x321/0x770 create_new_namespaces+0x3f6/0xb30 copy_namespaces+0x414/0x500 copy_process+0x2aec/0x7430 kernel_clone+0xeb/0x7d0 __do_sys_clone3+0x1d5/0x2e0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fa00fa4bb19 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:00007fa00cfc1188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa00fb5ef60 RCX: 00007fa00fa4bb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fa00faa5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd714226f R14: 00007fa00cfc1300 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 a5 44 d5 xadd %eax,%gs:0x7ed544a5(%rip) # 0x7ed544b1 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