watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.2:13138] Modules linked in: irq event stamp: 5191279 hardirqs last enabled at (5191278): [] _raw_spin_unlock_irqrestore+0x2c/0x60 hardirqs last disabled at (5191279): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5150932): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5150935): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 13138 Comm: syz-executor.2 Not tainted 6.1.0-rc4-next-20221111 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 26 b1 ed fc 48 89 ef e8 ee 28 ee fc 80 e7 02 74 06 e8 a4 7f 11 fd fb bf 01 00 00 00 69 88 e3 fc 65 8b 05 8a 6b c5 7b 85 c0 74 07 5b 5d e9 3b 29 00 RSP: 0018:ffff88806d009bc0 EFLAGS: 00000202 RAX: 00000000004f366e RBX: 0000000000000246 RCX: ffffffff812b2e3f RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000001 RBP: ffffffff854d18a0 R08: 0000000000000001 R09: ffffffff874248b7 R10: fffffbfff0e84916 R11: 0000000000000001 R12: ffff88800c71b720 R13: ffff88800e56baf8 R14: ffff88800eae99c8 R15: ffff888008041c80 FS: 00007f077606b700(0000) GS:ffff88806d000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3dbed09718 CR3: 000000003f034000 CR4: 0000000000350ef0 Call Trace: find_and_remove_object+0x123/0x170 kmemleak_free+0x25/0x40 __kmem_cache_free+0x95/0x410 skb_release_data+0x6d8/0x810 consume_skb+0xcb/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:rcu_preempt_deferred_qs_irqrestore+0x146/0x1110 Code: 45 84 f6 75 3b f7 c5 00 02 00 00 75 13 48 83 c4 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 f8 2a 0a 03 e8 3f 81 1b 00 fb 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 df 2a 0a 03 e8 06 61 ff ff eb 8d RSP: 0018:ffff88804475f8c8 EFLAGS: 00000282 RAX: 000000000042b24d RBX: ffff88803fa31ac0 RCX: ffffffff812b2e3f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000246 R08: 0000000000000001 R09: ffffffff874248b7 R10: fffffbfff0e84916 R11: 0000000000000001 R12: ffff88806d039e00 R13: ffff88806d039e11 R14: 0000000000000100 R15: ffff88803fa31eb8 __rcu_read_unlock+0x289/0x520 rcu_read_unlock+0xe/0x60 get_obj_cgroup_from_current+0x122/0x260 kmem_cache_alloc+0x7f/0x3e0 anon_vma_fork+0xe6/0x630 dup_mmap+0x9f2/0xfc0 copy_process+0x6ac7/0x7160 kernel_clone+0xeb/0x890 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f0778af5b19 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:00007f077606b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f0778c08f60 RCX: 00007f0778af5b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f0778b4ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffdb6ab4cf R14: 00007f077606b300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 Bluetooth: hci0: Opcode 0x c03 failed: -4 Bluetooth: hci0: Opcode 0x c03 failed: -4 ---------------- Code disassembly (best guess): 0: 48 83 c7 18 add $0x18,%rdi 4: 53 push %rbx 5: 48 89 f3 mov %rsi,%rbx 8: 48 8b 74 24 10 mov 0x10(%rsp),%rsi d: e8 26 b1 ed fc callq 0xfcedb138 12: 48 89 ef mov %rbp,%rdi 15: e8 ee 28 ee fc callq 0xfcee2908 1a: 80 e7 02 and $0x2,%bh 1d: 74 06 je 0x25 1f: e8 a4 7f 11 fd callq 0xfd117fc8 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 69 88 e3 fc callq 0xfce38898 <-- trapping instruction 2f: 65 8b 05 8a 6b c5 7b mov %gs:0x7bc56b8a(%rip),%eax # 0x7bc56bc0 36: 85 c0 test %eax,%eax 38: 74 07 je 0x41 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: e9 .byte 0xe9 3d: 3b 29 cmp (%rcx),%ebp