watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:7671] Modules linked in: irq event stamp: 7659505 hardirqs last enabled at (7659504): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7659505): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (7633364): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (7633401): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 7671 Comm: syz-executor.0 Not tainted 6.5.0-rc6-next-20230815 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x261/0x25d0 Code: 86 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 f7 93 6f 00 42 8b 04 bd 24 be 51 86 <44> 8d 7d 01 4a 8d 3c bd 24 be 51 86 48 89 fa 89 44 24 28 48 b8 00 RSP: 0018:ffff88806ce09600 EFLAGS: 00000246 RAX: 00000000000b99b7 RBX: ffff88806ce09680 RCX: 0000000000000100 RDX: 0000000000000000 RSI: ffffffff8113b883 RDI: ffffffff865f3e74 RBP: 0000000000036014 R08: 0000000000000004 R09: 0000000000036014 R10: 0000000000038000 R11: 0000000000000000 R12: 0000000000000001 R13: ffffffff84601489 R14: ffff88806ce096c1 R15: 0000000000036014 FS: 00007f9b3b762700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557231098 CR3: 0000000018e44000 CR4: 0000000000350ef0 Call Trace: arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x17b/0x390 __create_object+0x3c/0xc90 kmem_cache_alloc_node+0x23d/0x3b0 __alloc_skb+0x28c/0x330 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3f6/0xfc0 ieee80211_beacon_get_tim+0xa1/0x550 mac80211_hwsim_beacon_tx+0x402/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__slab_free+0x31/0x3e0 Code: 56 49 89 fe 41 55 41 54 49 89 f4 53 48 89 d3 48 83 e4 f0 48 83 ec 70 48 89 4c 24 20 0f 1f 44 00 00 66 44 89 44 24 2c 4d 89 f7 <49> 8b 54 24 28 4d 8b 6c 24 20 41 8b 47 28 48 8b 74 24 20 41 89 d6 RSP: 0018:ffff88803f507830 EFLAGS: 00000286 RAX: ffff88806ce3fef0 RBX: ffff88800c57f900 RCX: ffff88800c57f900 RDX: ffff88800c57f900 RSI: ffffea0000315f80 RDI: ffff8880087c0780 RBP: ffff88803f5078c8 R08: 0000000000000001 R09: ffffffff818358bf R10: ffffea0000315f80 R11: 0000000000000001 R12: ffffea0000315f80 R13: ffff88803f507918 R14: ffff8880087c0780 R15: ffff8880087c0780 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x199/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x17b/0x390 __create_object+0x3c/0xc90 __kmem_cache_alloc_node+0x20b/0x310 __kmalloc+0x4d/0x160 selinux_kernfs_init_security+0x13e/0x4c0 security_kernfs_init_security+0x52/0xb0 __kernfs_new_node+0x54d/0x890 kernfs_create_dir_ns+0xa0/0x230 cgroup_mkdir+0x47d/0x10b0 kernfs_iop_mkdir+0x151/0x1e0 vfs_mkdir+0x24b/0x470 do_mkdirat+0x163/0x2d0 __x64_sys_mkdirat+0x119/0x180 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7f9b3e1ecb19 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:00007f9b3b762188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f9b3e2fff60 RCX: 00007f9b3e1ecb19 RDX: 00000000000001ff RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f9b3e246f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc74b1464f R14: 00007f9b3b762300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 Bluetooth: hci1: command 0x0406 tx timeout ---------------- Code disassembly (best guess): 0: 86 48 89 xchg %cl,-0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx c: 48 89 f8 mov %rdi,%rax f: 83 e0 07 and $0x7,%eax 12: 83 c0 03 add $0x3,%eax 15: 38 d0 cmp %dl,%al 17: 7c 09 jl 0x22 19: 84 d2 test %dl,%dl 1b: 74 05 je 0x22 1d: e8 f7 93 6f 00 callq 0x6f9419 22: 42 8b 04 bd 24 be 51 mov -0x79ae41dc(,%r15,4),%eax 29: 86 * 2a: 44 8d 7d 01 lea 0x1(%rbp),%r15d <-- trapping instruction 2e: 4a 8d 3c bd 24 be 51 lea -0x79ae41dc(,%r15,4),%rdi 35: 86 36: 48 89 fa mov %rdi,%rdx 39: 89 44 24 28 mov %eax,0x28(%rsp) 3d: 48 rex.W 3e: b8 .byte 0xb8