[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[   67.408093] audit: type=1800 audit(1542224677.459:25): pid=6735 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[   67.427174] audit: type=1800 audit(1542224677.479:26): pid=6735 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[   67.446609] audit: type=1800 audit(1542224677.489:27): pid=6735 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.10' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   78.534211] ==================================================================
[   78.541641] BUG: KMSAN: uninit-value in keyctl_pkey_params_get+0x29c/0x7d0
[   78.548648] CPU: 0 PID: 6885 Comm: syz-executor823 Not tainted 4.20.0-rc2+ #85
[   78.555993] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   78.565338] Call Trace:
[   78.567921]  dump_stack+0x32d/0x480
[   78.571542]  ? keyctl_pkey_params_get+0x29c/0x7d0
[   78.576394]  kmsan_report+0x19f/0x300
[   78.580199]  __msan_warning+0x76/0xc0
[   78.584002]  keyctl_pkey_params_get+0x29c/0x7d0
[   78.588678]  keyctl_pkey_params_get_2+0x256/0x650
[   78.593528]  keyctl_pkey_e_d_s+0x122/0x700
[   78.597784]  __se_sys_keyctl+0xed6/0x1af0
[   78.601929]  ? prepare_exit_to_usermode+0x182/0x4c0
[   78.606947]  ? syscall_return_slowpath+0xed/0x730
[   78.611785]  ? __msan_get_context_state+0x9/0x20
[   78.616534]  __x64_sys_keyctl+0x62/0x80
[   78.620499]  do_syscall_64+0xcf/0x110
[   78.624302]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   78.629485] RIP: 0033:0x440139
[   78.632667] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   78.652860] RSP: 002b:00007fffa8e04ce8 EFLAGS: 00000286 ORIG_RAX: 00000000000000fa
[   78.660561] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440139
[   78.667820] RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 000000000000001b
[   78.675084] RBP: 00000000006ca018 R08: 00000000200001c0 R09: 0000000000000000
[   78.682347] R10: 0000000000000053 R11: 0000000000000286 R12: 00000000004019c0
[   78.689624] R13: 0000000000401a50 R14: 0000000000000000 R15: 0000000000000000
[   78.697095] 
[   78.698720] Local variable description: ----args.i@keyctl_pkey_params_get
[   78.705624] Variable was created at:
[   78.709335]  keyctl_pkey_params_get+0xaa/0x7d0
[   78.713907]  keyctl_pkey_params_get_2+0x256/0x650
[   78.718731] ==================================================================
[   78.726081] Disabling lock debugging due to kernel taint
[   78.731515] Kernel panic - not syncing: panic_on_warn set ...
[   78.737396] CPU: 0 PID: 6885 Comm: syz-executor823 Tainted: G    B             4.20.0-rc2+ #85
[   78.746149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   78.755500] Call Trace:
[   78.758105]  dump_stack+0x32d/0x480
[   78.761748]  panic+0x624/0xc08
[   78.764980]  kmsan_report+0x300/0x300
[   78.768781]  __msan_warning+0x76/0xc0
[   78.772610]  keyctl_pkey_params_get+0x29c/0x7d0
[   78.777300]  keyctl_pkey_params_get_2+0x256/0x650
[   78.782158]  keyctl_pkey_e_d_s+0x122/0x700
[   78.786427]  __se_sys_keyctl+0xed6/0x1af0
[   78.790594]  ? prepare_exit_to_usermode+0x182/0x4c0
[   78.795643]  ? syscall_return_slowpath+0xed/0x730
[   78.800482]  ? __msan_get_context_state+0x9/0x20
[   78.805232]  __x64_sys_keyctl+0x62/0x80
[   78.809199]  do_syscall_64+0xcf/0x110
[   78.812995]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   78.818177] RIP: 0033:0x440139
[   78.821360] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   78.840524] RSP: 002b:00007fffa8e04ce8 EFLAGS: 00000286 ORIG_RAX: 00000000000000fa
[   78.848232] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440139
[   78.855497] RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 000000000000001b
[   78.862755] RBP: 00000000006ca018 R08: 00000000200001c0 R09: 0000000000000000
[   78.870029] R10: 0000000000000053 R11: 0000000000000286 R12: 00000000004019c0
[   78.877297] R13: 0000000000401a50 R14: 0000000000000000 R15: 0000000000000000
[   78.885491] Kernel Offset: disabled
[   78.889131] Rebooting in 86400 seconds..