watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.6:6633] Modules linked in: irq event stamp: 3059109 hardirqs last enabled at (3059108): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3059109): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3005028): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3005047): [] __irq_exit_rcu+0xc4/0x100 CPU: 1 UID: 0 PID: 6633 Comm: syz-executor.6 Not tainted 6.12.0-next-20241126 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xbfb/0x2490 Code: 05 01 e8 b8 90 1e 00 4c 8b 4c 24 08 e9 24 f7 ff ff 48 be 00 00 00 00 00 fc ff df 48 8d 79 02 48 89 f8 48 c1 e8 03 0f b6 14 30 <48> 8d 41 03 49 89 c0 49 c1 e8 03 41 0f b6 34 30 49 89 f8 41 83 e0 RSP: 0018:ffff88806cf097b8 EFLAGS: 00000212 RAX: 1ffffffff0d069c4 RBX: 0000000000000001 RCX: ffffffff86834e1e RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffffffff86834e20 RBP: ffff88806cf09880 R08: ffffffff86834e22 R09: ffff88806cf09868 R10: 000000000003c001 R11: 000000000002263f R12: ffff88806cf09888 R13: ffff88806cf09870 R14: ffff88802e78fc20 R15: ffff88806cf09828 FS: 00007fd95e6a1700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020058000 CR3: 000000003e372000 CR4: 0000000000350ef0 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 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/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:__slab_free+0x7f/0x310 Code: c1 e8 1f 4d 85 ed 66 89 5c 24 58 41 89 c6 41 0f 94 c2 66 85 db 74 05 45 84 d2 74 05 45 84 f6 74 42 41 8b 7f 08 4c 8b 4c 24 58 <4c> 89 ea 4c 89 e6 4c 8b 44 24 20 e8 91 a0 ff ff 84 c0 74 9d 4c 89 RSP: 0018:ffff88802e78fb70 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00000000000d000c RCX: 00000000000d000d RDX: ffff88800eef96f0 RSI: ffffea00003bbe40 RDI: 0000000000089800 RBP: ffff88802e78fc10 R08: 0000000000000001 R09: 00000000000d000c R10: ffffea00003bbe01 R11: 0000000000000000 R12: ffffea00003bbe40 R13: 0000000000000000 R14: 0000000000000000 R15: ffff888008c4f780 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 sk_prot_alloc+0x157/0x280 sk_alloc+0x34/0xb50 __netlink_create+0x5d/0x280 netlink_create+0x3ad/0x620 __sock_create+0x369/0x810 __sys_socket+0x147/0x260 __x64_sys_socket+0x73/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd96112bb19 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:00007fd95e6a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fd96123ef60 RCX: 00007fd96112bb19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 RBP: 00007fd961185f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc593772ef R14: 00007fd95e6a1300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 blktrace: Concurrent blktraces are not allowed on sg0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 01 e8 add %ebp,%eax 2: b8 90 1e 00 4c mov $0x4c001e90,%eax 7: 8b 4c 24 08 mov 0x8(%rsp),%ecx b: e9 24 f7 ff ff jmpq 0xfffff734 10: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi 17: fc ff df 1a: 48 8d 79 02 lea 0x2(%rcx),%rdi 1e: 48 89 f8 mov %rdi,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 0f b6 14 30 movzbl (%rax,%rsi,1),%edx * 29: 48 8d 41 03 lea 0x3(%rcx),%rax <-- trapping instruction 2d: 49 89 c0 mov %rax,%r8 30: 49 c1 e8 03 shr $0x3,%r8 34: 41 0f b6 34 30 movzbl (%r8,%rsi,1),%esi 39: 49 89 f8 mov %rdi,%r8 3c: 41 rex.B 3d: 83 .byte 0x83 3e: e0 .byte 0xe0