watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.5:7594] Modules linked in: irq event stamp: 5613407 hardirqs last enabled at (5613406): [<ffffffff8460144a>] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5613407): [<ffffffff8459e1df>] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5612052): [<ffffffff811909a3>] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5612055): [<ffffffff811909a3>] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 7594 Comm: syz-executor.5 Not tainted 6.5.0-rc4-next-20230801 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ieee80211_prepare_and_rx_handle+0xd83/0x59c0 Code: 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 ca 3a 00 00 49 8b 47 28 48 89 04 24 48 85 c0 0f 85 a9 16 00 00 e8 3d e6 1a fd <48> 8b 54 24 10 48 b8 00 00 00 00 00 fc ff df 4c 8d ac 24 f8 00 00 RSP: 0018:ffff88806ce09a90 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: ffff88800fdbd1c0 RSI: ffffffff8431db03 RDI: 0000000000000001 RBP: ffff88804460bc50 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880181c0b80 R13: 0000000000000080 R14: 0000000000000001 R15: ffff88806ce09d70 FS: 00007f5c86570700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000000e CR3: 0000000044172000 CR4: 0000000000350ef0 Call Trace: <IRQ> ieee80211_rx_for_interface+0x10e/0x200 ieee80211_rx_list+0x1e34/0x2d10 ieee80211_rx_napi+0xde/0x3c0 ieee80211_tasklet_handler+0xd6/0x130 tasklet_action_common.constprop.0+0x267/0x700 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 36 97 d1 fc 48 89 ef e8 ee 1a d2 fc 80 e7 02 74 06 e8 04 a8 f7 fc fb 65 ff 0d a4 33 a7 7b <74> 07 5b 5d e9 13 2a 00 00 0f 1f 44 00 00 5b 5d e9 07 2a 00 00 0f RSP: 0018:ffff888044327588 EFLAGS: 00000246 RAX: 000000000054028d RBX: 0000000000000246 RCX: ffffffff812d4bff RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff845c575c RBP: ffff88800844e900 R08: 0000000000000001 R09: fffffbfff0ee7765 R10: ffffffff8773bb2f R11: 0000000000000001 R12: ffff88800844f780 R13: ffff88800844e900 R14: ffffea0000c03700 R15: 00000000800d0008 __unfreeze_partials+0x183/0x1d0 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x17b/0x390 __proc_create+0x2b3/0x8b0 proc_create_reg+0xb6/0x180 proc_create_net_data+0x90/0x1c0 arp_net_init+0x55/0x80 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/0x810 __do_sys_clone3+0x1d5/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f5c88ffab19 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:00007f5c86570188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f5c8910df60 RCX: 00007f5c88ffab19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007f5c89054f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0afd842f R14: 00007f5c86570300 R15: 0000000000022000 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 hpet: Lost 5 RTC interrupts netlink: 'syz-executor.7': attribute type 39 has an invalid length. ---------------- Code disassembly (best guess), 6 bytes skipped: 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 ca 3a 00 00 jne 0x3ad8 e: 49 8b 47 28 mov 0x28(%r15),%rax 12: 48 89 04 24 mov %rax,(%rsp) 16: 48 85 c0 test %rax,%rax 19: 0f 85 a9 16 00 00 jne 0x16c8 1f: e8 3d e6 1a fd callq 0xfd1ae661 * 24: 48 8b 54 24 10 mov 0x10(%rsp),%rdx <-- trapping instruction 29: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 30: fc ff df 33: 4c rex.WR 34: 8d .byte 0x8d 35: ac lods %ds:(%rsi),%al 36: 24 f8 and $0xf8,%al