[ 31.899010] audit: type=1800 audit(1555407111.650:33): pid=6842 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
[ 31.927066] audit: type=1800 audit(1555407111.650:34): pid=6842 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: [ 36.361235] random: sshd: uninitialized urandom read (32 bytes read)
[ 36.525159] audit: type=1400 audit(1555407116.280:35): avc: denied { map } for pid=7017 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
[ 36.575185] random: sshd: uninitialized urandom read (32 bytes read)
[ 37.134697] random: sshd: uninitialized urandom read (32 bytes read)
[ 46.738119] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts.
[ 52.334579] random: sshd: uninitialized urandom read (32 bytes read)
executing program
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[ 52.455184] audit: type=1400 audit(1555407132.210:36): avc: denied { map } for pid=7029 comm="syz-executor376" path="/root/syz-executor376908528" 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
[ 52.466841] md: md0 stopped.
[ 52.500155] md: md0 stopped.
executing program
[ 52.500403] ------------[ cut here ]------------
[ 52.508049] WARNING: CPU: 0 PID: 7056 at drivers/md/md.c:7165 md_ioctl+0x34bd/0x4bf0
[ 52.515939] Kernel panic - not syncing: panic_on_warn set ...
[ 52.515939]
[ 52.523283] CPU: 0 PID: 7056 Comm: syz-executor376 Not tainted 4.14.111 #1
[ 52.530313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 52.539680] Call Trace:
[ 52.542255] dump_stack+0x138/0x19c
[ 52.545867] panic+0x1f2/0x438
[ 52.549038] ? add_taint.cold+0x16/0x16
[ 52.553009] ? md_ioctl+0x34bd/0x4bf0
[ 52.556803] ? md_ioctl+0x34bd/0x4bf0
[ 52.560583] __warn.cold+0x2f/0x34
[ 52.564109] ? ist_end_non_atomic+0x10/0x10
[ 52.568413] ? md_ioctl+0x34bd/0x4bf0
[ 52.572210] report_bug+0x216/0x254
[ 52.575826] do_error_trap+0x1bb/0x310
[ 52.579695] ? math_error+0x360/0x360
[ 52.583479] ? __mutex_lock+0x36a/0x1470
[ 52.587651] ? selinux_ipv4_output+0x50/0x50
[ 52.592084] ? md_ioctl+0x9fe/0x4bf0
[ 52.595837] ? __lock_acquire+0x5f9/0x45e0
[ 52.600066] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 52.604903] do_invalid_op+0x1b/0x20
[ 52.608606] invalid_op+0x1b/0x40
[ 52.612038] RIP: 0010:md_ioctl+0x34bd/0x4bf0
[ 52.616426] RSP: 0018:ffff888093857a20 EFLAGS: 00010297
[ 52.621768] RAX: ffff888089d926c0 RBX: 0000000000000932 RCX: 0000000000000000
[ 52.629020] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
[ 52.636270] RBP: ffff888093857c68 R08: ffff88809b76c088 R09: ffffffff88cab060
[ 52.643518] R10: ffff888093857a10 R11: ffff888089d926c0 R12: ffff88809b76c080
executing program
[ 52.650947] R13: ffff8880a4554140 R14: ffff88809b76c0a8 R15: ffff88809b76c248
[ 52.658226] ? find_held_lock+0x35/0x130
[ 52.662285] ? add_new_disk+0x1610/0x1610
[ 52.666430] ? lock_downgrade+0x6e0/0x6e0
[ 52.670576] ? avc_has_extended_perms+0x8ec/0xe40
[ 52.675419] ? futex_wake+0x134/0x430
[ 52.679216] ? avc_ss_reset+0x110/0x110
[ 52.683188] ? __lock_acquire+0x5f9/0x45e0
[ 52.687421] ? do_futex+0x152/0x1a30
[ 52.691134] ? add_new_disk+0x1610/0x1610
[ 52.695275] blkdev_ioctl+0x983/0x1880
[ 52.699151] ? blkpg_ioctl+0x980/0x980
executing program
[ 52.703044] ? __might_sleep+0x93/0xb0
[ 52.706932] ? __fget+0x210/0x370
[ 52.710381] block_ioctl+0xde/0x120
[ 52.714005] ? blkdev_fallocate+0x3b0/0x3b0
[ 52.718369] do_vfs_ioctl+0x7b9/0x1070
[ 52.722312] ? selinux_file_mprotect+0x5d0/0x5d0
[ 52.727056] ? lock_downgrade+0x6e0/0x6e0
[ 52.731302] ? ioctl_preallocate+0x1c0/0x1c0
[ 52.735757] ? __fget+0x237/0x370
[ 52.739199] ? security_file_ioctl+0x83/0xc0
[ 52.743684] ? security_file_ioctl+0x8f/0xc0
[ 52.748074] SyS_ioctl+0x8f/0xc0
[ 52.751420] ? do_vfs_ioctl+0x1070/0x1070
[ 52.755558] do_syscall_64+0x1eb/0x630
[ 52.759436] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 52.764274] entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 52.769551] RIP: 0033:0x446749
[ 52.772730] RSP: 002b:00007f9a4cf8bdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 52.780432] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446749
[ 52.787681] RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000003
[ 52.794943] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000
[ 52.802301] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c
[ 52.809568] R13: 00007ffce65d34bf R14: 00007f9a4cf8c9c0 R15: 000000000000002d
[ 52.821485] Kernel Offset: disabled
[ 52.828735] Rebooting in 86400 seconds..