watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.5:14084] Modules linked in: irq event stamp: 3055147 hardirqs last enabled at (3055146): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3055147): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2972612): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2972617): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 14084 Comm: syz-executor.5 Not tainted 6.12.0-next-20241118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x92/0x2490 Code: 6f 48 4c 89 ea 48 89 04 24 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 d3 19 00 00 49 8b 47 48 48 89 44 24 08 <65> ff 05 9f 05 ef 7e 48 b8 00 00 00 00 00 fc ff df 4d 8d 67 60 4c RSP: 0018:ffff88806ce09768 EFLAGS: 00000246 RAX: ffff88806ce09ff0 RBX: 0000000000000002 RCX: ffffffff86796301 RDX: 1ffff1100d9c1304 RSI: ffffffff811aa269 RDI: ffff88806ce097d8 RBP: ffff88806ce09830 R08: ffffffff867963b4 R09: ffff88806ce09818 R10: 000000000003c001 R11: 000000000000800e R12: ffff88806ce098a0 R13: ffff88806ce09820 R14: ffff888041861b80 R15: ffff88806ce097d8 FS: 00007efefabe4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9f656c718 CR3: 000000003d5bc000 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 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __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:free_unref_page+0x4/0xe90 Code: 90 90 90 90 90 90 66 0f 1f 00 31 f6 e9 25 a6 ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <41> 57 41 56 49 89 fe 41 55 41 54 55 89 f5 53 48 83 ec 30 83 fe 03 RSP: 0018:ffff8880413a76d8 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff88801b10bde0 RCX: ffffffff818384ec RDX: fffff9400020b207 RSI: 0000000000000003 RDI: ffffea0001059000 RBP: ffff888009406280 R08: 0000000000000001 R09: fffff9400020b206 R10: ffffea0001059037 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880413a7718 R14: ffff888041646600 R15: ffff888041646600 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 __kmalloc_noprof+0x37e/0x4b0 sk_prot_alloc+0x157/0x280 sk_alloc+0x34/0xb50 tun_chr_open+0x80/0x5f0 misc_open+0x31e/0x420 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: 0033:0x7efefd66eb19 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:00007efefabe4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007efefd781f60 RCX: 00007efefd66eb19 RDX: 0000000000000000 RSI: 0000000020000280 RDI: ffffffffffffff9c RBP: 00007efefd6c8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe5ee429df R14: 00007efefabe4300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 audit: type=1400 audit(2000000051.420:30): avc: denied { module_load } for pid=14098 comm="syz-executor.1" path=2F6D656D66643A42DB2F89036CDE62CBB534EDBE4C4BA4673F4B29A0F09B3859B55AE11253F547CCF3E902680BCA2896E143DF1CEA8543FB1013FA0316CD05202864656C6574656429 dev="tmpfs" ino=1123 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=system permissive=1 Process accounting paused Invalid ELF header magic: != ELF Process accounting paused Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF Invalid ELF header magic: != ELF kernel write not supported for file /14226/net/fib_triestat (pid: 38 comm: kworker/1:1) kernel write not supported for file /14226/net/fib_triestat (pid: 38 comm: kworker/1:1) ---------------- Code disassembly (best guess): 0: 6f outsl %ds:(%rsi),(%dx) 1: 48 rex.W 2: 4c 89 ea mov %r13,%rdx 5: 48 89 04 24 mov %rax,(%rsp) 9: 48 c1 ea 03 shr $0x3,%rdx d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 14: fc ff df 17: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1b: 0f 85 d3 19 00 00 jne 0x19f4 21: 49 8b 47 48 mov 0x48(%r15),%rax 25: 48 89 44 24 08 mov %rax,0x8(%rsp) * 2a: 65 ff 05 9f 05 ef 7e incl %gs:0x7eef059f(%rip) # 0x7eef05d0 <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 4d 8d 67 60 lea 0x60(%r15),%r12 3f: 4c rex.WR