watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.5:6333] Modules linked in: irq event stamp: 4349203 hardirqs last enabled at (4349202): [] asm_sysvec_x86_platform_ipi-0xa/0x20 hardirqs last disabled at (4349203): [] sysvec_apic_timer_interrupt+0xb/0xd0 softirqs last enabled at (4283514): [] __irq_exit_rcu+0x11b/0x190 softirqs last disabled at (4283517): [] __irq_exit_rcu+0x11b/0x190 CPU: 0 PID: 6333 Comm: syz-executor.5 Not tainted 6.1.0-rc2-next-20221028 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x70 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 4a 92 f2 fc 48 89 ef e8 c2 09 f3 fc 80 e7 02 74 06 e8 88 35 16 fd fb bf 01 00 00 00 7d 7f e8 fc 65 8b 05 de 88 ca 7b 85 c0 74 07 5b 5d e9 0b 29 00 RSP: 0018:ffff88806ce09b08 EFLAGS: 00000206 RAX: 0000000000425d0a RBX: 0000000000000246 RCX: ffffffff812ae21f RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000001 RBP: ffffffff852d1280 R08: 0000000000000001 R09: ffffffff8720e85f R10: fffffbfff0e41d0b R11: 0000000000000001 R12: ffff888007f7fdc0 R13: 0000000000000820 R14: 0000000000000820 R15: 0000000000000000 FS: 00007f23e42e5700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d826000 CR3: 00000000176c8000 CR4: 0000000000350ef0 Call Trace: kmem_cache_alloc_node+0x252/0x410 __alloc_skb+0x216/0x320 __netdev_alloc_skb+0x72/0x3f0 __ieee80211_beacon_get+0x3de/0x1390 ieee80211_beacon_get_tim+0x95/0x4f0 mac80211_hwsim_beacon_tx+0x1ce/0xac0 __iterate_interfaces+0x2d3/0x570 ieee80211_iterate_active_interfaces_atomic+0x70/0x190 mac80211_hwsim_beacon+0x101/0x210 __hrtimer_run_queues+0x541/0xb60 hrtimer_run_softirq+0x172/0x350 __do_softirq+0x1c3/0x8f5 __irq_exit_rcu+0x11b/0x190 irq_exit_rcu+0x5/0x30 sysvec_apic_timer_interrupt+0x8e/0xd0 asm_sysvec_x86_platform_ipi-0xa/0x20 RIP: 0010:stack_trace_consume_entry+0xa/0x170 Code: e9 52 fd ff ff e8 a6 80 ff 02 cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff8880441e7150 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffffff81375300 RCX: 0000000000000000 RDX: 1ffff1100883ce36 RSI: ffffffff817ba82a RDI: ffff8880441e7220 RBP: ffff8880441e71f0 R08: ffffffff85cf017a R09: ffffffff85cf017e R10: ffffed100883ce38 R11: ffff8880441e7198 R12: ffff8880441e7220 R13: 0000000000000000 R14: ffff888044073580 R15: ffff88800a85ddc0 arch_stack_walk+0x73/0x100 stack_trace_save+0x8c/0xd0 kasan_save_stack+0x1e/0x50 kasan_set_track+0x21/0x40 kasan_save_free_info+0x2a/0x60 __kasan_slab_free+0x106/0x1a0 kmem_cache_free+0xf7/0x620 ext4_mb_new_blocks+0x702/0x4c00 ext4_ext_map_blocks+0x1fc6/0x5d50 ext4_map_blocks+0x772/0x19f0 ext4_getblk+0x600/0x7c0 ext4_bread+0x2a/0x1a0 ext4_append+0x21d/0x540 ext4_init_new_dir+0x25e/0x4d0 ext4_mkdir+0x3cf/0xb30 vfs_mkdir+0x491/0x750 do_mkdirat+0x17b/0x300 __x64_sys_mkdir+0xf2/0x150 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f23e6d6ec27 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 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:00007f23e42e4fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f23e6d6ec27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007f23e42e5040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000020000100 R14: 00007f23e42e5000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6369 Comm: syz-executor.2 Not tainted 6.1.0-rc2-next-20221028 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_release+0x21b/0x760 Code: a2 03 00 00 48 8d 78 24 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 <84> d2 0f 85 b1 04 00 00 8b 73 24 85 f6 0f 85 3e 04 00 00 48 b8 00 RSP: 0018:ffff88806cf09020 EFLAGS: 00000002 RAX: 0000000000000007 RBX: ffff88801e6bda68 RCX: ffff88806cf09070 RDX: 0000000000000000 RSI: ffffffff85207a20 RDI: ffff88801e6bda8c RBP: 1ffff1100d9e1206 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff85207a20 R13: 0000000000000006 R14: ffff88801e6bd998 R15: ffff88801e6bd040 FS: 00007f98dfa19700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557f4bdfffa0 CR3: 00000000175f2000 CR4: 0000000000350ee0 Call Trace: perf_output_begin_forward+0x727/0xb10 perf_event_output_forward+0xf2/0x290 __perf_event_overflow+0x191/0x550 perf_swevent_hrtimer+0x35d/0x3e0 __hrtimer_run_queues+0x184/0xb60 hrtimer_interrupt+0x315/0x780 __sysvec_apic_timer_interrupt+0x144/0x510 sysvec_apic_timer_interrupt+0x3b/0xd0 asm_sysvec_x86_platform_ipi-0xa/0x20 RIP: 0010:stack_trace_consume_entry+0xa/0x170 Code: e9 52 fd ff ff e8 a6 80 ff 02 cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 b8 00 00 00 00 00 fc ff df <55> 53 48 89 fb 48 83 c7 10 48 89 fa 48 c1 ea 03 48 83 ec 08 0f b6 RSP: 0018:ffff88806cf097b0 EFLAGS: 00000282 RAX: dffffc0000000000 RBX: ffffffff81375300 RCX: 0000000000000000 RDX: 1ffff1100d9e1302 RSI: ffffffff81a3c2e5 RDI: ffff88806cf09880 RBP: ffff88806cf09850 R08: ffffffff85d2c4aa R09: ffffffff85d2c4ae R10: ffff88806cf09ff8 R11: ffff88806cf097f8 R12: ffff88806cf09880 R13: 0000000000000000 R14: ffff88801e6bd040 R15: ffff888037d70de0 arch_stack_walk+0x73/0x100 stack_trace_save+0x8c/0xd0 kasan_save_stack+0x1e/0x50 kasan_set_track+0x21/0x40 __kasan_kmalloc+0x7e/0xa0 __kmalloc_node_track_caller+0x4d/0xc0 __alloc_skb+0xe5/0x320 __netdev_alloc_skb+0x72/0x3f0 __ieee80211_beacon_get+0x3de/0x1390 ieee80211_beacon_get_tim+0x95/0x4f0 mac80211_hwsim_beacon_tx+0x1ce/0xac0 __iterate_interfaces+0x2d3/0x570 ieee80211_iterate_active_interfaces_atomic+0x70/0x190 mac80211_hwsim_beacon+0x101/0x210 __hrtimer_run_queues+0x541/0xb60 hrtimer_run_softirq+0x172/0x350 __do_softirq+0x1c3/0x8f5 __irq_exit_rcu+0x11b/0x190 irq_exit_rcu+0x5/0x30 sysvec_apic_timer_interrupt+0x8e/0xd0 asm_sysvec_x86_platform_ipi-0xa/0x20 RIP: 0010:trace_contention_begin+0xd7/0x150 Code: e8 0e d9 ff ff 65 ff 0d df 8e d9 7e 0f 85 47 ff ff ff 0f 1f 44 00 00 e9 3d ff ff ff 65 ff 05 c8 8e d9 7e 48 8b 05 59 96 64 04 34 5e 08 00 85 c0 74 17 65 ff 0d b1 8e d9 7e 0f 85 49 ff ff ff RSP: 0018:ffff888037ad7530 EFLAGS: 00000283 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8129e758 RDX: fffffbfff0b2168b RSI: 0000000000000008 RDI: ffffffff8590b450 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8590b457 R10: fffffbfff0b2168a R11: 0000000000000001 R12: ffff88801e6bd040 R13: 0000000000000000 R14: ffffffff8530ba60 R15: ffff88800d8178c0 __mutex_lock+0x143/0x14e0 kernfs_xattr_get+0x25/0xb0 selinux_kernfs_init_security+0xea/0x4d0 security_kernfs_init_security+0x4e/0xc0 __kernfs_new_node+0x57e/0x8d0 kernfs_new_node+0x93/0x130 __kernfs_create_file+0x51/0x360 sysfs_add_file_mode_ns+0x218/0x440 internal_create_group+0x322/0xb30 internal_create_groups.part.0+0x90/0x150 sysfs_create_groups+0x25/0x60 device_add+0x70d/0x1ed0 netdev_register_kobject+0x17a/0x3c0 register_netdevice+0xd5c/0x1520 __tun_chr_ioctl+0x210b/0x3f50 __x64_sys_ioctl+0x19a/0x220 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f98e24a3b19 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:00007f98dfa19188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f98e25b6f60 RCX: 00007f98e24a3b19 RDX: 0000000020000000 RSI: 00000000400454ca RDI: 0000000000000003 RBP: 00007f98e24fdf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffed5d3489f R14: 00007f98dfa19300 R15: 0000000000022000 Bluetooth: hci5: command 0x0406 tx timeout ---------------- 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 4a 92 f2 fc callq 0xfcf2925c 12: 48 89 ef mov %rbp,%rdi 15: e8 c2 09 f3 fc callq 0xfcf309dc 1a: 80 e7 02 and $0x2,%bh 1d: 74 06 je 0x25 1f: e8 88 35 16 fd callq 0xfd1635ac 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 7d 7f e8 fc callq 0xfce87fac <-- trapping instruction 2f: 65 8b 05 de 88 ca 7b mov %gs:0x7bca88de(%rip),%eax # 0x7bca8914 36: 85 c0 test %eax,%eax 38: 74 07 je 0x41 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: e9 .byte 0xe9 3d: 0b 29 or (%rcx),%ebp