watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:9074] Modules linked in: irq event stamp: 2736025 hardirqs last enabled at (2736024): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2736025): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2731458): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2731461): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 9074 Comm: syz-executor.6 Not tainted 6.12.0-rc7-next-20241115 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:stack_access_ok+0xde/0x1d0 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e5 00 00 00 48 8b 73 28 48 89 da 48 89 ef e8 2d 17 f5 ff 85 c0 74 13 31 c0 48 83 c4 08 5b <5d> 41 5c 41 5d 41 5e e9 86 49 72 03 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffff88806ce094c0 EFLAGS: 00000286 RAX: ffff88806ce0a001 RBX: 0000000000000002 RCX: 0000000000000002 RDX: ffff88806ce09601 RSI: ffff88806ce09648 RDI: ffff88806ce095b8 RBP: ffff88806ce09648 R08: ffffffff8677e384 R09: ffff88806ce095e8 R10: 000000000003c001 R11: 0000000000003f14 R12: 0000000000000008 R13: ffff88806ce02000 R14: ffff88806ce09650 R15: ffff88806ce095a8 FS: 00007fdbc7ba0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feb400026f4 CR3: 000000000a81e000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0xa5c/0x2490 __unwind_start+0x517/0x7c0 arch_stack_walk+0x63/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/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:qlist_free_all+0x28/0x160 Code: 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 48 8b 18 <48> 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 c7 66 90 RSP: 0018:ffff888040ef7920 EFLAGS: 00000246 RAX: ffff88803640d000 RBX: ffff8880167eb000 RCX: ffffea0000d90340 RDX: 0000000000000000 RSI: ffff88800969f280 RDI: ffffffff81849d96 RBP: ffff88800969f280 R08: 0000000000000001 R09: fffffbfff0fdddf1 R10: ffffffff87eeef8f R11: 0000000000000000 R12: 0000000000000000 R13: ffff888040ef7958 R14: ffff888030dc0300 R15: ffff888030dc0300 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_lru_noprof+0x303/0x3c0 ext4_alloc_inode+0x28/0x650 alloc_inode+0x63/0x240 new_inode+0x1c/0x190 __ext4_new_inode+0x2f1/0x4df0 ext4_mkdir+0x33d/0xb30 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x350 __x64_sys_mkdir+0xf3/0x140 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdbca629c27 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:00007fdbc7b9ffa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdbca629c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007fdbc7ba0040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007fdbc7ba0000 R15: 0000000000000000 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 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) a: 0f 85 e5 00 00 00 jne 0xf5 10: 48 8b 73 28 mov 0x28(%rbx),%rsi 14: 48 89 da mov %rbx,%rdx 17: 48 89 ef mov %rbp,%rdi 1a: e8 2d 17 f5 ff callq 0xfff5174c 1f: 85 c0 test %eax,%eax 21: 74 13 je 0x36 23: 31 c0 xor %eax,%eax 25: 48 83 c4 08 add $0x8,%rsp 29: 5b pop %rbx * 2a: 5d pop %rbp <-- trapping instruction 2b: 41 5c pop %r12 2d: 41 5d pop %r13 2f: 41 5e pop %r14 31: e9 86 49 72 03 jmpq 0x37249bc 36: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3d: fc ff df