watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:7989] Modules linked in: irq event stamp: 3407691 hardirqs last enabled at (3407690): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3407691): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3383188): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3383209): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 7989 Comm: syz-executor.4 Not tainted 6.12.0-next-20241122 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_trace_consume_entry+0x4e/0x170 Code: 04 02 84 c0 74 08 3c 03 0f 8e e7 00 00 00 48 8d 7b 08 8b 6b 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e ad 00 00 00 31 c0 3b 6b 08 0f 83 81 00 00 RSP: 0018:ffff88806cf097b8 EFLAGS: 00000212 RAX: 0000000000000000 RBX: ffff88806cf098a0 RCX: 0000000000000001 RDX: 1ffff1100d9e1315 RSI: ffffffff818fdc7c RDI: ffff88806cf098a8 RBP: 000000000000001f R08: 0000000000000001 R09: ffff88806cf09818 R10: 000000000003c001 R11: 0000000000025eae R12: ffff88806cf098a0 R13: 0000000000000000 R14: ffff88802c943700 R15: ffff888033d21500 FS: 00007f9a17aad700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6a05f0e547 CR3: 000000003dbce000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0x77/0xf0 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 skb_release_data+0x814/0x990 consume_skb+0xd0/0x160 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/0xa70 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 e4 92 ab ff 4d 85 ed 74 06 e8 6a 5f 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:ffff8880137674d8 EFLAGS: 00000246 RAX: 0000000000339fa7 RBX: ffffea0000589b40 RCX: 1ffffffff0fdfeb6 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8184a5e6 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 0000000000000000 R12: ffff88806cf40350 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88801626db90 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 __get_vm_area_node+0xee/0x260 __vmalloc_node_range_noprof+0x24e/0x1490 __vmalloc_node_noprof+0xac/0xf0 n_tty_open+0x1a/0x180 tty_ldisc_open+0xa2/0x120 tty_ldisc_setup+0x41/0x100 tty_init_dev.part.0+0x1f1/0x670 tty_open+0xb6e/0x1310 chrdev_open+0x235/0x690 do_dentry_open+0x71c/0x1420 vfs_open+0x82/0x3f0 path_openat+0x1cf3/0x2980 do_filp_open+0x1e9/0x450 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9a1a537b19 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:00007f9a17aad188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f9a1a64af60 RCX: 00007f9a1a537b19 RDX: 0000000000000000 RSI: 00000000200003c0 RDI: ffffffffffffff9c RBP: 00007f9a1a591f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff70f130af R14: 00007f9a17aad300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 04 02 add $0x2,%al 2: 84 c0 test %al,%al 4: 74 08 je 0xe 6: 3c 03 cmp $0x3,%al 8: 0f 8e e7 00 00 00 jle 0xf5 e: 48 8d 7b 08 lea 0x8(%rbx),%rdi 12: 8b 6b 10 mov 0x10(%rbx),%ebp 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 fa mov %rdi,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 74 08 je 0x36 2e: 3c 03 cmp $0x3,%al 30: 0f 8e ad 00 00 00 jle 0xe3 36: 31 c0 xor %eax,%eax 38: 3b 6b 08 cmp 0x8(%rbx),%ebp 3b: 0f .byte 0xf 3c: 83 .byte 0x83 3d: 81 .byte 0x81