watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:12170] Modules linked in: irq event stamp: 2948463 hardirqs last enabled at (2948462): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2948463): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2927436): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2927439): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 12170 Comm: syz-executor.6 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x6a/0xf0 Code: 89 de 4c 39 e5 77 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 RSP: 0018:ffff88806ce09770 EFLAGS: 00000217 RAX: 1ffffffff0c98236 RBX: ffffffff864c11b4 RCX: ffffffff8184a47a RDX: 0000000000000005 RSI: ffffffff86834c20 RDI: ffffffff864c11ac RBP: ffffffff864c11ac R08: ffffffff86834c20 R09: ffff88806ce09868 R10: 000000000003c001 R11: 00000000000225ce R12: ffffffff864c11c0 R13: ffffffff864c11ac R14: ffffffff864c11ac R15: dffffc0000000000 FS: 00007fa129e33700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa129df1718 CR3: 000000001ad76000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b7/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 __kasan_record_aux_stack+0x8c/0xa0 __call_rcu_common.constprop.0+0x6a/0xaa0 kmem_cache_free+0x2ae/0x470 kfree_skbmem+0x18a/0x1f0 consume_skb+0xdd/0x160 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 84 92 ab ff 4d 85 ed 74 06 e8 6a 64 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff8880417ff520 EFLAGS: 00000246 RAX: 00000000002c43c5 RBX: ffffea00003960c0 RCX: 1ffffffff0fdfeb6 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8184a476 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 0000000000000000 R12: ffff88806ce40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88800e583a68 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __proc_create+0x2b7/0x8d0 proc_create_reg+0xb6/0x180 proc_create_net_data+0x90/0x1c0 dev_proc_net_init+0x5a/0x1c0 ops_init+0x1e1/0x650 setup_net+0x1d7/0x7a0 copy_net_ns+0x2e3/0x6f0 create_new_namespaces+0x3f6/0xaf0 copy_namespaces+0x45c/0x580 copy_process+0x2704/0x8ee0 kernel_clone+0xeb/0x850 __do_sys_clone3+0x1d9/0x260 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa12c8bdb19 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:00007fa129e33188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa12c9d0f60 RCX: 00007fa12c8bdb19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 0000000020004c00 RBP: 00007fa12c917f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc2faa544f R14: 00007fa129e33300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 89 de mov %ebx,%esi 2: 4c 39 e5 cmp %r12,%rbp 5: 77 4d ja 0x54 7: 4c 89 e0 mov %r12,%rax a: 48 29 e8 sub %rbp,%rax d: 48 89 c2 mov %rax,%rdx 10: 48 c1 e8 3f shr $0x3f,%rax 14: 48 c1 fa 02 sar $0x2,%rdx 18: 48 01 d0 add %rdx,%rax 1b: 48 d1 f8 sar %rax 1e: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx <-- trapping instruction 2f: 48 89 d8 mov %rbx,%rax 32: 83 e0 07 and $0x7,%eax 35: 83 c0 03 add $0x3,%eax 38: 38 d0 cmp %dl,%al 3a: 7c 04 jl 0x40 3c: 84 d2 test %dl,%dl 3e: 75 50 jne 0x90