watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.2:10694] Modules linked in: irq event stamp: 3621817 hardirqs last enabled at (3621816): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (3621817): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (3543280): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (3543283): [] irq_exit_rcu+0x94/0xc0 CPU: 1 UID: 0 PID: 10694 Comm: syz-executor.2 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50 Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 16 a6 ab fc 48 89 ef e8 0e 17 ac fc 80 e7 02 74 06 e8 24 26 d5 fc fb 65 ff 0d a4 54 7f 7b <74> 07 5b 5d e9 b3 1e 00 00 0f 1f 44 00 00 5b 5d e9 a7 1e 00 00 0f RSP: 0018:ffff88806cf09a10 EFLAGS: 00000206 RAX: 000000000037438e RBX: 0000000000000282 RCX: 1ffffffff0fe16e3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8484521c RBP: ffffffff85cfbde0 R08: 0000000000000001 R09: fffffbfff0fda9e5 R10: ffffffff87ed4f2f R11: 00000000000c329c R12: ffff888034a123c0 R13: 00000000000000e8 R14: 0000000000000001 R15: 0000000000000282 FS: 00007f670a804700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 0000000036d10000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __create_object+0x59/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 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:ip_do_fragment+0x1376/0x1800 Code: 48 c1 e9 03 80 3c 11 00 0f 84 e8 f5 ff ff 48 8b 7c 24 10 e8 dc 28 c9 fd e9 d9 f5 ff ff e8 12 6d 8f fd 48 8b 44 24 30 80 38 00 <0f> 85 c2 02 00 00 49 8b 85 98 02 00 00 65 48 ff 80 b0 00 00 00 4c RSP: 0018:ffff88800d59f580 EFLAGS: 00000246 RAX: ffffed1006d18333 RBX: 0000000000000003 RCX: ffffc9000081b000 RDX: 0000000000040000 RSI: ffffffff83c20f0e RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0fda9e5 R10: 0000000000000000 R11: 00000000000c2f81 R12: dffffc0000000000 R13: ffff8880368c1700 R14: ffff888018e41140 R15: 000000000000ad70 ip_fragment.constprop.0+0x174/0x250 __ip_finish_output.part.0+0x16f/0x350 ip_output+0x27f/0x850 ip_push_pending_frames+0x310/0x5d0 raw_sendmsg+0x118b/0x30c0 inet_sendmsg+0x121/0x150 ____sys_sendmsg+0x99b/0xc80 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1d0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f670d28eb19 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:00007f670a804188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f670d3a1f60 RCX: 00007f670d28eb19 RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000005 RBP: 00007f670d2e8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc922abbdf R14: 00007f670a804300 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), 1 bytes skipped: 0: 18 53 48 sbb %dl,0x48(%rbx) 3: 89 f3 mov %esi,%ebx 5: 48 8b 74 24 10 mov 0x10(%rsp),%rsi a: e8 16 a6 ab fc callq 0xfcaba625 f: 48 89 ef mov %rbp,%rdi 12: e8 0e 17 ac fc callq 0xfcac1725 17: 80 e7 02 and $0x2,%bh 1a: 74 06 je 0x22 1c: e8 24 26 d5 fc callq 0xfcd52645 21: fb sti 22: 65 ff 0d a4 54 7f 7b decl %gs:0x7b7f54a4(%rip) # 0x7b7f54cd * 29: 74 07 je 0x32 <-- trapping instruction 2b: 5b pop %rbx 2c: 5d pop %rbp 2d: e9 b3 1e 00 00 jmpq 0x1ee5 32: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 37: 5b pop %rbx 38: 5d pop %rbp 39: e9 a7 1e 00 00 jmpq 0x1ee5 3e: 0f .byte 0xf