watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:11206] Modules linked in: irq event stamp: 2156551 hardirqs last enabled at (2156550): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2156551): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2124264): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2124279): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 11206 Comm: syz-executor.3 Not tainted 6.12.0-rc5-next-20241104 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xa78/0x2490 Code: 89 4c 24 18 48 89 74 24 10 e8 c4 f3 ff ff 4d 8d 4f 40 84 c0 0f 84 9e f8 ff ff 48 8b 74 24 10 48 89 f7 e8 ab eb ff ff 48 89 ef <48> 8b 74 24 10 48 ba 00 00 00 00 00 fc ff df 48 c1 ef 03 48 8b 4c RSP: 0018:ffff88806ce09768 EFLAGS: 00000202 RAX: ffffffff8184a34e RBX: 0000000000000002 RCX: 0000000000000002 RDX: ffff88806ce09b01 RSI: ffff88806ce09b98 RDI: ffff88806ce09830 RBP: ffff88806ce09830 R08: ffffffff867c8c98 R09: ffff88806ce09818 R10: 000000000003c001 R11: 00000000000110a9 R12: ffff88806ce09838 R13: ffff88806ce09820 R14: ffff88806ce09ba0 R15: ffff88806ce097d8 FS: 00007f907e0ad700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559f76fe4448 CR3: 0000000015de8000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: 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 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+0x94/0xc0 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 54 9f ab ff 4d 85 ed 74 06 e8 2a 6d 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:ffff88803cf5f8a0 EFLAGS: 00000282 RAX: 00000000002069f5 RBX: ffffea0000f0fc40 RCX: 1ffffffff0fde6c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81846b56 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fdc5e9 R10: ffffffff87ee2f4f R11: 0000000000000000 R12: ffff88806ce40350 R13: 0000000000000200 R14: ffffea0000f32f40 R15: ffff88803c3f1250 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 jbd2_journal_add_journal_head+0x367/0x5d0 jbd2_journal_get_create_access+0x44/0x560 __ext4_journal_get_create_access+0x54/0x200 ext4_getblk+0x3cd/0x8f0 ext4_bread+0x2e/0x1a0 ext4_append+0x225/0x540 ext4_init_new_dir+0x262/0x4c0 ext4_mkdir+0x3d2/0xb30 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x320 __x64_sys_mkdir+0xf3/0x140 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9080b36c27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 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:00007f907e0acfa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9080b36c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f907e0ad040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f907e0ad000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 audit: type=1400 audit(1730709990.182:11): avc: denied { write } for pid=11337 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ---------------- Code disassembly (best guess): 0: 89 4c 24 18 mov %ecx,0x18(%rsp) 4: 48 89 74 24 10 mov %rsi,0x10(%rsp) 9: e8 c4 f3 ff ff callq 0xfffff3d2 e: 4d 8d 4f 40 lea 0x40(%r15),%r9 12: 84 c0 test %al,%al 14: 0f 84 9e f8 ff ff je 0xfffff8b8 1a: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 1f: 48 89 f7 mov %rsi,%rdi 22: e8 ab eb ff ff callq 0xffffebd2 27: 48 89 ef mov %rbp,%rdi * 2a: 48 8b 74 24 10 mov 0x10(%rsp),%rsi <-- trapping instruction 2f: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 36: fc ff df 39: 48 c1 ef 03 shr $0x3,%rdi 3d: 48 rex.W 3e: 8b .byte 0x8b 3f: 4c rex.WR