vboxa uthentication segfaults SQW01

[oddsocks]

When using the VirtualBox web service to login, the authentication backend segfaults after a successful login. In order to be able to login again, I have to restart the web service. This has been happening for several releases of VirtualBox now.

I see the following in dmesg

[147969.086688] SQW01[17397]: segfault at 7f9e6da76700 ip 00007f9e6da76700 sp 00007f9e6e3366f8 error 14 in libcap-ng.so.0.0.0[7f9e6d8ee000+200000] [147969.086705] Code: Bad RIP value. [147969.213300] SQW01[17400]: segfault at 7f9e6da76700 ip 00007f9e6da76700 sp 00007f9e6e3366b8 error 14 in libcap-ng.so.0.0.0[7f9e6d8ee000+200000] [147969.213310] Code: Bad RIP value. [148328.226581] SQW01[17517]: segfault at 7f4f596ec700 ip 00007f4f596ec700 sp 00007f4f59fac6f8 error 14 in libcap-ng.so.0.0.0[7f4f59564000+200000] [148328.226597] Code: Bad RIP value. [148328.349869] SQW01[17520]: segfault at 7f4f596ec700 ip 00007f4f596ec700 sp 00007f4f59fac6b8 error 14 in libcap-ng.so.0.0.0[7f4f59564000+200000] [148328.349879] Code: Bad RIP value.

I'm currently running VirtualBox-5.2-5.2.20_125813_fedora26-1.x86_64 on Fedora 28.

[oddsocks]

stacktrace when crashing with libaudit

[oddsocks]

stacktrace when crashing with libcap-ng

[oddsocks]

The server has been upgraded to Fedora 29 (from F28) and the issue still occurs. For example

[ 1876.844368] SQW02[10486]: segfault at 7f3c91a566b0 ip 00007f3c91a566b0 sp 00007f3c91a6f788 error 15 [ 1876.844434] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 1877.002269] SQW02[10489]: segfault at 7f3c91a566b0 ip 00007f3c91a566b0 sp 00007f3c91a6f748 error 15 [ 1877.002306] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 6539.936964] SQW02[10912]: segfault at 7f3c91a566b0 ip 00007f3c91a566b0 sp 00007f3c91a6f788 error 15 [ 6539.937031] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 6540.066574] SQW02[10915]: segfault at 7f3c91a566b0 ip 00007f3c91a566b0 sp 00007f3c91a6f748 error 15 [ 6540.066610] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Would a coredump or something like that be useful?

[oddsocks]

Seems to have resolved itself under F29 + VB 5.2.22