[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 [ 30.187696] random: sshd: uninitialized urandom read (32 bytes read) syzkaller login: [ 30.403438] kauditd_printk_skb: 9 callbacks suppressed [ 30.403446] audit: type=1400 audit(1567287352.316:35): avc: denied { map } for pid=6809 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 30.461115] random: sshd: uninitialized urandom read (32 bytes read) [ 30.962250] random: sshd: uninitialized urandom read (32 bytes read) [ 486.478289] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. [ 491.995343] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program [ 492.117846] audit: type=1400 audit(1567287814.026:36): avc: denied { map } for pid=6823 comm="syz-executor276" path="/root/syz-executor276197277" dev="sda1" ino=2233 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 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 [ 492.169413] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 492.193719] Bluetooth: Can't register HCI device 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 [ 492.284257] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 492.306301] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) 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 [ 492.330600] Bluetooth: Can't register HCI device [ 492.330871] Bluetooth: Can't register HCI device [ 492.353022] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 492.366844] Bluetooth: Can't register HCI device 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 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 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 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 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 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 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 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 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 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 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 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 [ 493.472346] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 493.489515] Bluetooth: Can't register HCI device 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 executing program executing program executing program [ 493.571991] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 493.602675] Bluetooth: Can't register HCI device 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 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 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 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 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 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 executing program executing program executing program executing program executing program executing program executing program [ 494.216353] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 494.224383] kobject_add_internal failed for hci4 (error: -2 parent: bluetooth) [ 494.239221] kobject_add_internal failed for hci0 (error: -2 parent: bluetooth) [ 494.246799] Bluetooth: Can't register HCI device [ 494.252738] Bluetooth: Can't register HCI device executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 494.263401] Bluetooth: Can't register HCI device 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 [ 495.636251] refcount_t: increment on 0; use-after-free. [ 495.648196] ------------[ cut here ]------------ [ 495.653096] WARNING: CPU: 0 PID: 7669 at lib/refcount.c:153 refcount_inc.cold+0x18/0x1f [ 495.661246] Kernel panic - not syncing: panic_on_warn set ... [ 495.661246] [ 495.668621] CPU: 0 PID: 7669 Comm: syz-executor276 Not tainted 4.14.141 #37 [ 495.675724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 495.685110] Call Trace: [ 495.687814] dump_stack+0x138/0x197 [ 495.691465] panic+0x1f2/0x426 [ 495.694665] ? add_taint.cold+0x16/0x16 [ 495.698648] ? refcount_inc.cold+0x18/0x1f [ 495.702893] ? refcount_inc.cold+0x18/0x1f [ 495.707130] __warn.cold+0x2f/0x36 [ 495.710773] ? ist_end_non_atomic+0x10/0x10 [ 495.715100] ? refcount_inc.cold+0x18/0x1f [ 495.719437] report_bug+0x216/0x254 [ 495.723084] do_error_trap+0x1bb/0x310 [ 495.726996] ? math_error+0x360/0x360 [ 495.730800] ? vprintk_emit+0x171/0x600 [ 495.734785] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 495.739638] do_invalid_op+0x1b/0x20 [ 495.743391] invalid_op+0x1b/0x40 [ 495.746850] RIP: 0010:refcount_inc.cold+0x18/0x1f [ 495.751691] RSP: 0018:ffff8880918379c0 EFLAGS: 00010286 [ 495.757058] RAX: 000000000000002b RBX: ffffffff86faca20 RCX: 0000000000000000 [ 495.764331] RDX: 0000000000000000 RSI: ffffffff866d10e0 RDI: ffffed1012306f2e [ 495.771608] RBP: ffff8880918379c8 R08: 000000000000002b R09: ffff88808205cd88 [ 495.778879] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a7d819b8 [ 495.786239] R13: 0000000000000000 R14: ffff8880a7d81980 R15: ffff8880939edea0 [ 495.793535] kobject_get+0x5b/0x70 [ 495.797082] kobject_add_internal.part.0+0xfc/0x340 [ 495.802102] ? kfree_const+0x40/0x50 [ 495.805826] kobject_add+0x11f/0x180 [ 495.809724] ? kset_create_and_add+0x180/0x180 [ 495.814315] ? get_device_parent.isra.0+0x34e/0x560 [ 495.819338] ? kmem_cache_alloc_trace+0x623/0x790 [ 495.824319] ? lock_downgrade+0x6e0/0x6e0 [ 495.828506] get_device_parent.isra.0+0x415/0x560 [ 495.833626] device_add+0x2d3/0x1490 [ 495.837352] ? device_initialize+0x430/0x430 [ 495.841774] ? device_private_init+0x190/0x190 [ 495.846453] hci_register_dev+0x2d9/0x810 [ 495.850753] ? hci_init_sysfs+0x7c/0xa0 [ 495.854822] __vhci_create_device+0x2a6/0x560 [ 495.859462] vhci_write+0x2a1/0x437 [ 495.863270] __vfs_write+0x4a7/0x6b0 [ 495.866988] ? kernel_read+0x120/0x120 [ 495.870888] ? rw_verify_area+0xea/0x2b0 [ 495.874949] vfs_write+0x198/0x500 [ 495.878495] SyS_write+0xfd/0x230 [ 495.881951] ? SyS_read+0x230/0x230 [ 495.885678] ? do_syscall_64+0x53/0x640 [ 495.889661] ? SyS_read+0x230/0x230 [ 495.893302] do_syscall_64+0x1e8/0x640 [ 495.897190] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 495.902040] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 495.907234] RIP: 0033:0x441279 [ 495.910454] RSP: 002b:00007ffd27273b48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 495.918258] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441279 [ 495.925534] RDX: 0000000000000002 RSI: 0000000020000180 RDI: 0000000000000003 [ 495.932810] RBP: 0000000000078fd7 R08: 00000000004002c8 R09: 00000000004002c8 [ 495.940088] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000401ff0 [ 495.947458] R13: 0000000000402080 R14: 0000000000000000 R15: 0000000000000000 [ 495.956374] Kernel Offset: disabled [ 495.960169] Rebooting in 86400 seconds..