Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 83.882482][T10363] ------------[ cut here ]------------ [ 83.894883][T10363] refcount_t: increment on 0; use-after-free. [ 83.901740][T10363] WARNING: CPU: 0 PID: 10363 at lib/refcount.c:156 refcount_inc_checked+0x61/0x70 [ 83.911146][T10363] Kernel panic - not syncing: panic_on_warn set ... [ 83.917719][T10363] CPU: 0 PID: 10363 Comm: syz-executor494 Not tainted 5.3.0-rc2+ #112 [ 83.925858][T10363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.936006][T10363] Call Trace: [ 83.939303][T10363] dump_stack+0x172/0x1f0 [ 83.943651][T10363] ? refcount_inc_not_zero_checked+0x180/0x200 [ 83.949907][T10363] panic+0x2dc/0x755 [ 83.954073][T10363] ? add_taint.cold+0x16/0x16 [ 83.958747][T10363] ? __kasan_check_write+0x14/0x20 [ 83.963852][T10363] ? __warn.cold+0x5/0x4c [ 83.968333][T10363] ? __warn+0xe7/0x1e0 [ 83.972417][T10363] ? refcount_inc_checked+0x61/0x70 [ 83.977794][T10363] __warn.cold+0x20/0x4c [ 83.982051][T10363] ? refcount_inc_checked+0x61/0x70 [ 83.987235][T10363] report_bug+0x263/0x2b0 [ 83.991664][T10363] do_error_trap+0x11b/0x200 [ 83.996328][T10363] do_invalid_op+0x37/0x50 [ 84.000735][T10363] ? refcount_inc_checked+0x61/0x70 [ 84.005920][T10363] invalid_op+0x23/0x30 [ 84.010085][T10363] RIP: 0010:refcount_inc_checked+0x61/0x70 [ 84.015875][T10363] Code: 1d 5e 90 64 06 31 ff 89 de e8 eb 99 35 fe 84 db 75 dd e8 a2 98 35 fe 48 c7 c7 80 03 c6 87 c6 05 3e 90 64 06 01 e8 57 05 07 fe <0f> 0b eb c1 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 [ 84.035461][T10363] RSP: 0018:ffff8880a818f8f8 EFLAGS: 00010286 [ 84.041508][T10363] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 84.049467][T10363] RDX: 0000000000000000 RSI: ffffffff815c5216 RDI: ffffed1015031f11 [ 84.057421][T10363] RBP: ffff8880a818f908 R08: ffff8880a7e70300 R09: ffffed1015d04101 [ 84.065383][T10363] R10: ffffed1015d04100 R11: ffff8880ae820807 R12: ffff88821adec338 [ 84.073527][T10363] R13: ffff888094299820 R14: ffff888094299818 R15: ffff88821adec2b8 [ 84.081510][T10363] ? vprintk_func+0x86/0x189 [ 84.086215][T10363] ? refcount_inc_checked+0x61/0x70 [ 84.091419][T10363] kobject_get+0x66/0xc0 [ 84.095671][T10363] kobject_add_internal+0x14f/0x380 [ 84.100884][T10363] ? kfree_const+0x5e/0x70 [ 84.105300][T10363] kobject_add+0x150/0x1c0 [ 84.109731][T10363] ? kset_create_and_add+0x1a0/0x1a0 [ 84.115124][T10363] ? kasan_kmalloc+0x9/0x10 [ 84.119630][T10363] ? kmem_cache_alloc_trace+0x346/0x790 [ 84.125165][T10363] get_device_parent.isra.0+0x413/0x560 [ 84.130695][T10363] device_add+0x2df/0x17a0 [ 84.135098][T10363] ? get_device_parent.isra.0+0x560/0x560 [ 84.140797][T10363] ? up_write+0x9d/0x280 [ 84.145023][T10363] hci_register_dev+0x2e8/0x8f0 [ 84.149891][T10363] __vhci_create_device+0x2c5/0x5d0 [ 84.155097][T10363] vhci_write+0x2d0/0x470 [ 84.159410][T10363] new_sync_write+0x4d3/0x770 [ 84.164079][T10363] ? new_sync_read+0x800/0x800 [ 84.168857][T10363] ? common_file_perm+0x238/0x720 [ 84.173877][T10363] ? __kasan_check_read+0x11/0x20 [ 84.178900][T10363] ? apparmor_file_permission+0x25/0x30 [ 84.184451][T10363] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.190690][T10363] ? security_file_permission+0x8f/0x380 [ 84.196306][T10363] __vfs_write+0xe1/0x110 [ 84.200620][T10363] vfs_write+0x268/0x5d0 [ 84.204844][T10363] ksys_write+0x14f/0x290 [ 84.209193][T10363] ? __ia32_sys_read+0xb0/0xb0 [ 84.213943][T10363] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.220179][T10363] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 84.226325][T10363] __x64_sys_write+0x73/0xb0 [ 84.230926][T10363] do_syscall_64+0xfd/0x6a0 [ 84.235415][T10363] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.241327][T10363] RIP: 0033:0x441279 [ 84.245225][T10363] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 84.264855][T10363] RSP: 002b:00007fffdebca038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 84.273275][T10363] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 84.281251][T10363] RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000003 [ 84.289237][T10363] RBP: 0000000000014777 R08: 00000000004002c8 R09: 00000000004002c8 [ 84.297234][T10363] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401ff0 [ 84.305317][T10363] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 84.314420][T10363] Kernel Offset: disabled [ 84.318949][T10363] Rebooting in 86400 seconds..