[ 33.239453] audit: type=1800 audit(1580739503.761:33): pid=7216 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 [ 33.266505] audit: type=1800 audit(1580739503.761:34): pid=7216 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: [ 36.858115] random: sshd: uninitialized urandom read (32 bytes read) [ 37.203143] audit: type=1400 audit(1580739507.731:35): avc: denied { map } for pid=7391 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 [ 37.257352] random: sshd: uninitialized urandom read (32 bytes read) [ 37.964688] random: sshd: uninitialized urandom read (32 bytes read) [ 466.649476] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. [ 472.235791] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 472.355389] audit: type=1400 audit(1580739942.881:36): avc: denied { map } for pid=7403 comm="syz-executor004" path="/root/syz-executor004621964" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 472.366787] md: md0 stopped. [ 472.402763] md: md0 stopped. [ 472.406237] ------------[ cut here ]------------ [ 472.411392] WARNING: CPU: 0 PID: 7434 at drivers/md/md.c:7177 md_ioctl+0x34b7/0x4bd0 [ 472.419363] Kernel panic - not syncing: panic_on_warn set ... [ 472.419363] [ 472.426722] CPU: 0 PID: 7434 Comm: syz-executor004 Not tainted 4.14.169-syzkaller #0 [ 472.434593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 472.444053] Call Trace: [ 472.446747] dump_stack+0x142/0x197 [ 472.450533] panic+0x1f9/0x42d [ 472.453731] ? add_taint.cold+0x16/0x16 [ 472.458056] ? md_ioctl+0x34b7/0x4bd0 [ 472.461861] ? md_ioctl+0x34b7/0x4bd0 [ 472.465666] __warn.cold+0x2f/0x2f [ 472.469321] ? ist_end_non_atomic+0x10/0x10 [ 472.473637] ? md_ioctl+0x34b7/0x4bd0 [ 472.477444] report_bug+0x216/0x254 [ 472.481136] do_error_trap+0x1bb/0x310 [ 472.485170] ? math_error+0x360/0x360 [ 472.489079] ? __mutex_lock+0x36a/0x1470 [ 472.493222] ? selinux_ipv4_output+0x50/0x50 [ 472.497621] ? md_ioctl+0x9fe/0x4bd0 [ 472.501711] ? __lock_acquire+0x5f7/0x4620 [ 472.505998] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 472.510870] do_invalid_op+0x1b/0x20 [ 472.514633] invalid_op+0x1b/0x40 [ 472.518077] RIP: 0010:md_ioctl+0x34b7/0x4bd0 [ 472.522469] RSP: 0018:ffff88808149fa20 EFLAGS: 00010297 [ 472.527947] RAX: ffff88809fc26480 RBX: 0000000000000932 RCX: 0000000000000000 [ 472.535257] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 472.542524] RBP: ffff88808149fc68 R08: ffff8882154b95c8 R09: ffffffff89578590 [ 472.549792] R10: ffff88808149fa10 R11: ffff88809fc26480 R12: ffff8882154b95c0 [ 472.557658] R13: ffff8882199e4140 R14: ffff8882154b95e8 R15: ffff8882154b9788 [ 472.566081] ? find_held_lock+0x35/0x130 [ 472.570363] ? add_new_disk+0x15f0/0x15f0 [ 472.574606] ? lock_downgrade+0x740/0x740 [ 472.578756] ? avc_has_extended_perms+0x8ec/0xe40 [ 472.583680] ? futex_wake+0x134/0x430 [ 472.587630] ? depot_save_stack+0x11c/0x410 [ 472.592816] ? avc_ss_reset+0x110/0x110 [ 472.596807] ? __lock_acquire+0x5f7/0x4620 [ 472.601136] ? trace_hardirqs_on+0x10/0x10 [ 472.605453] ? do_futex+0x152/0x19e0 [ 472.609170] ? add_new_disk+0x15f0/0x15f0 [ 472.613398] blkdev_ioctl+0x95f/0x1850 [ 472.617429] ? blkpg_ioctl+0x970/0x970 [ 472.621455] ? __might_sleep+0x93/0xb0 [ 472.625393] ? __fget+0x210/0x370 [ 472.628884] block_ioctl+0xde/0x120 [ 472.632502] ? blkdev_fallocate+0x3b0/0x3b0 [ 472.636982] do_vfs_ioctl+0x7ae/0x1060 [ 472.640864] ? selinux_file_mprotect+0x5d0/0x5d0 [ 472.645609] ? lock_downgrade+0x740/0x740 [ 472.649777] ? ioctl_preallocate+0x1c0/0x1c0 executing program executing program [ 472.654305] ? __fget+0x237/0x370 [ 472.657806] ? security_file_ioctl+0x7d/0xb0 [ 472.662315] ? security_file_ioctl+0x89/0xb0 [ 472.666718] SyS_ioctl+0x8f/0xc0 [ 472.670072] ? do_vfs_ioctl+0x1060/0x1060 [ 472.674315] do_syscall_64+0x1e8/0x640 [ 472.678213] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 472.683068] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 472.688258] RIP: 0033:0x4467f9 [ 472.691458] RSP: 002b:00007f27463e8db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 472.699165] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 00000000004467f9 [ 472.706576] RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000003 [ 472.713874] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 472.721137] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 472.728545] R13: 00007ffe4e9f75bf R14: 00007f27463e99c0 R15: 0000000000000001 [ 472.737732] Kernel Offset: disabled [ 472.741431] Rebooting in 86400 seconds..