[ 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 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..