[ 34.387045] audit: type=1800 audit(1564443324.156:33): pid=7029 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 [ 34.408533] audit: type=1800 audit(1564443324.156:34): pid=7029 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: [ 39.205354] random: sshd: uninitialized urandom read (32 bytes read) [ 39.474627] audit: type=1400 audit(1564443329.246:35): avc: denied { map } for pid=7202 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 [ 39.527270] random: sshd: uninitialized urandom read (32 bytes read) [ 40.139142] random: sshd: uninitialized urandom read (32 bytes read) [ 40.340264] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. [ 45.863278] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 45.987041] audit: type=1400 audit(1564443335.756:36): avc: denied { map } for pid=7214 comm="syz-executor005" path="/root/syz-executor005150268" 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 [ 46.002086] md: md0 stopped. [ 46.018416] ------------[ cut here ]------------ [ 46.023279] WARNING: CPU: 0 PID: 7224 at drivers/md/md.c:7167 md_ioctl+0x34b7/0x4bd0 [ 46.032318] Kernel panic - not syncing: panic_on_warn set ... [ 46.032318] [ 46.039679] CPU: 0 PID: 7224 Comm: syz-executor005 Not tainted 4.14.134 #30 [ 46.046770] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.056118] Call Trace: [ 46.058768] dump_stack+0x138/0x19c [ 46.062400] panic+0x1f2/0x426 [ 46.065592] ? add_taint.cold+0x16/0x16 [ 46.069565] ? md_ioctl+0x34b7/0x4bd0 [ 46.073390] ? md_ioctl+0x34b7/0x4bd0 [ 46.077199] __warn.cold+0x2f/0x36 [ 46.080754] ? ist_end_non_atomic+0x10/0x10 [ 46.085082] ? md_ioctl+0x34b7/0x4bd0 [ 46.088934] report_bug+0x216/0x254 [ 46.092562] do_error_trap+0x1bb/0x310 [ 46.096451] ? math_error+0x360/0x360 [ 46.100291] ? __mutex_lock+0x36a/0x1470 [ 46.104344] ? selinux_ipv4_output+0x50/0x50 [ 46.108745] ? md_ioctl+0x9fe/0x4bd0 [ 46.112452] ? __lock_acquire+0x5f9/0x45e0 [ 46.116771] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.121618] do_invalid_op+0x1b/0x20 [ 46.125325] invalid_op+0x1b/0x40 [ 46.128855] RIP: 0010:md_ioctl+0x34b7/0x4bd0 [ 46.133317] RSP: 0018:ffff88807e97fa20 EFLAGS: 00010297 [ 46.139053] RAX: ffff8880a04661c0 RBX: 0000000000000932 RCX: 0000000000000000 [ 46.147134] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 46.154415] RBP: ffff88807e97fc68 R08: ffff88809b7b6188 R09: ffffffff88c94720 [ 46.161749] R10: ffff88807e97fa10 R11: ffff8880a04661c0 R12: ffff88809b7b6180 [ 46.169035] R13: ffff8880a44b5180 R14: ffff88809b7b61a8 R15: ffff88809b7b6348 [ 46.176325] ? find_held_lock+0x35/0x130 [ 46.180402] ? add_new_disk+0x15f0/0x15f0 [ 46.184557] ? lock_downgrade+0x6e0/0x6e0 [ 46.188715] ? avc_has_extended_perms+0x8ec/0xe40 [ 46.193556] ? futex_wake+0x134/0x430 [ 46.197414] ? avc_ss_reset+0x110/0x110 [ 46.201396] ? __lock_acquire+0x5f9/0x45e0 [ 46.205623] ? save_trace+0x290/0x290 [ 46.209421] ? do_futex+0x152/0x19e0 [ 46.213123] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 46.218214] ? add_new_disk+0x15f0/0x15f0 [ 46.222435] blkdev_ioctl+0x96b/0x1860 [ 46.226413] ? blkpg_ioctl+0x980/0x980 [ 46.230304] ? __might_sleep+0x93/0xb0 [ 46.234366] ? __fget+0x210/0x370 [ 46.237808] block_ioctl+0xde/0x120 [ 46.241417] ? blkdev_fallocate+0x3b0/0x3b0 [ 46.245738] do_vfs_ioctl+0x7ae/0x1060 [ 46.249620] ? selinux_file_mprotect+0x5d0/0x5d0 [ 46.254439] ? lock_downgrade+0x6e0/0x6e0 [ 46.258601] ? ioctl_preallocate+0x1c0/0x1c0 [ 46.263071] ? __fget+0x237/0x370 [ 46.266585] ? security_file_ioctl+0x7d/0xb0 [ 46.270995] ? security_file_ioctl+0x89/0xb0 [ 46.275403] SyS_ioctl+0x8f/0xc0 [ 46.278766] ? do_vfs_ioctl+0x1060/0x1060 [ 46.282902] do_syscall_64+0x1e8/0x640 [ 46.286780] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.291627] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.296912] RIP: 0033:0x446859 [ 46.300099] RSP: 002b:00007f7245a1bdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.307806] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446859 [ 46.315077] RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000003 [ 46.322342] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 46.329605] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 46.336911] R13: 00007ffe59c537ff R14: 00007f7245a1c9c0 R15: 0000000000000000 [ 46.345376] Kernel Offset: disabled [ 46.349054] Rebooting in 86400 seconds..