[ 30.952089] audit: type=1800 audit(1556142037.425:33): pid=6783 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 [ 30.978886] audit: type=1800 audit(1556142037.425:34): pid=6783 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: [ 35.536186] random: sshd: uninitialized urandom read (32 bytes read) [ 35.822284] audit: type=1400 audit(1556142042.295:35): avc: denied { map } for pid=6956 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 [ 35.863900] random: sshd: uninitialized urandom read (32 bytes read) [ 36.441476] random: sshd: uninitialized urandom read (32 bytes read) [ 36.625222] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.68' (ECDSA) to the list of known hosts. [ 42.242240] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program [ 42.362625] audit: type=1400 audit(1556142048.835:36): avc: denied { map } for pid=6968 comm="syz-executor524" path="/root/syz-executor524440548" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 42.373761] md: md0 stopped. [ 42.393502] ------------[ cut here ]------------ [ 42.398402] WARNING: CPU: 0 PID: 6980 at drivers/md/md.c:7165 md_ioctl+0x34bd/0x4bf0 [ 42.406280] Kernel panic - not syncing: panic_on_warn set ... [ 42.406280] [ 42.413638] CPU: 0 PID: 6980 Comm: syz-executor524 Not tainted 4.14.113 #3 [ 42.420648] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.429988] Call Trace: [ 42.432566] dump_stack+0x138/0x19c [ 42.436177] panic+0x1f2/0x438 [ 42.439487] ? add_taint.cold+0x16/0x16 [ 42.443484] ? md_ioctl+0x34bd/0x4bf0 [ 42.447285] ? md_ioctl+0x34bd/0x4bf0 [ 42.451068] __warn.cold+0x2f/0x34 [ 42.454590] ? ist_end_non_atomic+0x10/0x10 [ 42.458934] ? md_ioctl+0x34bd/0x4bf0 [ 42.462721] report_bug+0x216/0x254 [ 42.466331] do_error_trap+0x1bb/0x310 [ 42.470198] ? math_error+0x360/0x360 [ 42.473981] ? __mutex_lock+0x36a/0x1470 [ 42.478026] ? selinux_ipv4_output+0x50/0x50 [ 42.482424] ? md_ioctl+0x9fe/0x4bf0 [ 42.486126] ? __lock_acquire+0x5f9/0x45e0 [ 42.490352] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.495208] do_invalid_op+0x1b/0x20 [ 42.498916] invalid_op+0x1b/0x40 [ 42.502365] RIP: 0010:md_ioctl+0x34bd/0x4bf0 [ 42.506757] RSP: 0018:ffff888097cbfa20 EFLAGS: 00010297 [ 42.512100] RAX: ffff8880955ec140 RBX: 0000000000000932 RCX: 0000000000000000 [ 42.519353] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 42.526606] RBP: ffff888097cbfc68 R08: ffff888215d7ec48 R09: ffffffff88cb19f8 [ 42.533857] R10: ffff888097cbfa10 R11: ffff8880955ec140 R12: ffff888215d7ec40 [ 42.541121] R13: ffff88821742a140 R14: ffff888215d7ec68 R15: ffff888215d7ee08 [ 42.548394] ? find_held_lock+0x35/0x130 [ 42.552464] ? add_new_disk+0x1610/0x1610 [ 42.556603] ? lock_downgrade+0x6e0/0x6e0 executing program executing program executing program [ 42.560738] ? avc_has_extended_perms+0x8ec/0xe40 [ 42.565565] ? futex_wake+0x134/0x430 [ 42.569349] ? avc_ss_reset+0x110/0x110 [ 42.573313] ? __lock_acquire+0x5f9/0x45e0 [ 42.577534] ? do_futex+0x152/0x1a30 [ 42.581249] ? add_new_disk+0x1610/0x1610 [ 42.585405] blkdev_ioctl+0x983/0x1880 [ 42.589295] ? blkpg_ioctl+0x980/0x980 [ 42.593183] ? __might_sleep+0x93/0xb0 [ 42.597070] ? __fget+0x210/0x370 [ 42.600515] block_ioctl+0xde/0x120 [ 42.604122] ? blkdev_fallocate+0x3b0/0x3b0 [ 42.608684] do_vfs_ioctl+0x7b9/0x1070 [ 42.612556] ? selinux_file_mprotect+0x5d0/0x5d0 [ 42.617293] ? lock_downgrade+0x6e0/0x6e0 [ 42.621420] ? ioctl_preallocate+0x1c0/0x1c0 [ 42.625813] ? __fget+0x237/0x370 [ 42.629250] ? security_file_ioctl+0x83/0xc0 [ 42.633643] ? security_file_ioctl+0x8f/0xc0 [ 42.638037] SyS_ioctl+0x8f/0xc0 [ 42.641411] ? do_vfs_ioctl+0x1070/0x1070 [ 42.645548] do_syscall_64+0x1eb/0x630 [ 42.649419] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.654273] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.659463] RIP: 0033:0x446749 [ 42.662633] RSP: 002b:00007f619778edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.670318] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446749 [ 42.677568] RDX: 0000000000000000 RSI: 0000000000000932 RDI: 0000000000000003 [ 42.684816] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 42.692063] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 42.699316] R13: 00007fff41b53e4f R14: 00007f619778f9c0 R15: 000000000000002d [ 42.707780] Kernel Offset: disabled [ 42.711472] Rebooting in 86400 seconds..