[ 32.941736] audit: type=1800 audit(1561936411.903:33): pid=6896 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 32.971140] audit: type=1800 audit(1561936411.903:34): pid=6896 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 36.190849] random: sshd: uninitialized urandom read (32 bytes read) [ 36.579196] audit: type=1400 audit(1561936415.533:35): avc: denied { map } for pid=7070 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 [ 36.631098] random: sshd: uninitialized urandom read (32 bytes read) [ 37.210448] random: sshd: uninitialized urandom read (32 bytes read) [ 37.406065] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. [ 43.206963] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 43.325810] audit: type=1400 audit(1561936422.283:36): avc: denied { map } for pid=7082 comm="syz-executor743" path="/root/syz-executor743226554" dev="sda1" ino=16483 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 [ 43.369368] kobject_add_internal failed for hci1 (error: -2 parent: bluetooth) [ 43.380879] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.467831] kobject_add_internal failed for hci2 (error: -2 parent: bluetooth) [ 45.507395] 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 [ 46.690412] kernfs_put: bluetooth/hci4: released with incorrect active_ref 0 [ 46.708301] ------------[ cut here ]------------ [ 46.709578] kobject: 'rfkill686' (ffff888081b94668): kobject_uevent_env [ 46.713109] WARNING: CPU: 1 PID: 7777 at fs/kernfs/dir.c:525 kernfs_put.cold+0x8a/0xa4 [ 46.713116] Kernel panic - not syncing: panic_on_warn set ... [ 46.713116] [ 46.713125] CPU: 1 PID: 7777 Comm: syz-executor743 Not tainted 4.14.131 #25 [ 46.713130] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.713134] Call Trace: [ 46.713148] dump_stack+0x138/0x19c [ 46.713161] panic+0x1f2/0x426 [ 46.713168] ? add_taint.cold+0x16/0x16 [ 46.713179] ? kernfs_put.cold+0x8a/0xa4 [ 46.713190] ? kernfs_put.cold+0x8a/0xa4 [ 46.713196] __warn.cold+0x2f/0x36 [ 46.713205] ? ist_end_non_atomic+0x10/0x10 [ 46.713213] ? kernfs_put.cold+0x8a/0xa4 [ 46.713222] report_bug+0x216/0x254 [ 46.713234] do_error_trap+0x1bb/0x310 [ 46.713243] ? math_error+0x360/0x360 [ 46.713257] ? vprintk_emit+0x171/0x600 [ 46.713271] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.713282] do_invalid_op+0x1b/0x20 [ 46.713290] invalid_op+0x1b/0x40 [ 46.713297] RIP: 0010:kernfs_put.cold+0x8a/0xa4 [ 46.713302] RSP: 0018:ffff88809f537ae0 EFLAGS: 00010286 [ 46.713310] RAX: 0000000000000040 RBX: dffffc0000000000 RCX: 0000000000000000 [ 46.713316] RDX: 0000000000000000 RSI: ffffffff866d0ca0 RDI: ffffed1013ea6f52 [ 46.713320] RBP: ffff88809f537b38 R08: 0000000000000040 R09: 0000000000000000 [ 46.713325] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888083179380 [ 46.713330] R13: ffff888097871e00 R14: ffff8880831793b0 R15: ffffffff86fa8fe0 [ 46.713349] ? kernfs_remove+0x30/0x40 [ 46.726673] kobject: 'rfkill684' (ffff888081b94ee8): kobject_cleanup, parent (null) [ 46.728166] kobject_del.part.0+0x42/0xf0 [ 46.728175] kobject_del+0x20/0x30 [ 46.728185] device_del+0x688/0xaa0 [ 46.728198] ? __device_links_no_driver+0x220/0x220 [ 46.728212] ? vhci_close_dev+0x50/0x50 [ 46.728227] hci_unregister_dev+0x298/0x7d0 [ 46.768346] kobject: 'rfkill684' (ffff888081b94ee8): calling ktype release [ 46.769481] ? vhci_close_dev+0x50/0x50 [ 46.769490] vhci_release+0x76/0xf0 [ 46.769511] __fput+0x275/0x7a0 [ 46.769524] ____fput+0x16/0x20 [ 46.769538] task_work_run+0x114/0x190 [ 46.779114] kobject: 'rfkill686' (ffff888081b94668): fill_kobj_path: path = '/devices/virtual/bluetooth/hci3/rfkill686' [ 46.781446] do_exit+0x7df/0x2c10 [ 46.781464] ? mm_update_next_owner+0x5d0/0x5d0 [ 46.781479] ? up_read+0x1a/0x40 [ 46.781491] ? __do_page_fault+0x358/0xb80 [ 46.781507] do_group_exit+0x111/0x330 [ 46.781517] SyS_exit_group+0x1d/0x20 [ 46.781524] ? do_group_exit+0x330/0x330 [ 46.781536] do_syscall_64+0x1e8/0x640 [ 46.794187] kobject: 'rfkill686' (ffff888081b94668): kobject_cleanup, parent (null) [ 46.796896] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.796915] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.796923] RIP: 0033:0x43fed8 [ 46.796929] RSP: 002b:00007fff79df6e28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 46.796939] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043fed8 [ 46.796943] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 46.796951] RBP: 00000000004bf710 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 46.806360] kobject: 'rfkill684': free name [ 46.809457] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000001 [ 46.809462] R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 [ 46.814585] Kernel Offset: disabled [ 47.046129] Rebooting in 86400 seconds..