Apps under guest os randomly crash with segfault

[A C]

Hi all,

I have a virtual machine with Ubuntu 20.04 guest system. Apps randomly crash like that (guest kernel logs):

[ 2183.898620] GpuWatchdog[3837]: segfault at 0 ip 0000561cf320fce2 sp 00007f79124cf3c0 error 6 in brave[561ceecae000+7823000]
[ 2183.898626] Code: 83 c3 e8 75 e9 41 8b 85 00 01 00 00 85 c0 0f 84 99 00 00 00 48 8d 3d f6 45 ce fa be 01 00 00 00 ba 03 00 00 00 e8 4e 54 9d fe <c7> 04 25 00 00 00 00 37 13 00 00 c6 05 8c c1 b7 03 01 80 7d 8f 00
[ 2188.991978] traps: ThreadPoolForeg[3908] general protection fault ip:55cb8b730080 sp:7f69558e4060 error:0 in brave[55cb891f6000+7823000]
[ 2193.811756] ThreadPoolForeg[4038]: segfault at 35fdb2680008 ip 000055cb8b215252 sp 00007f695168be60 error 4 in brave[55cb891f6000+7823000]
[ 2193.811796] Code: c0 e8 42 ab bc 03 cc cc 55 48 89 e5 41 57 41 56 41 54 53 f6 c2 01 74 1e 83 fa 03 74 19 49 89 ce 48 89 f3 48 81 e2 00 00 fc ff <48> 8b 42 08 a8 18 75 5b a8 40 75 09 5b 41 5c 41 5e 41 5f 5d c3 48

[ 2451.129338] traps: WebExtensions[4251] general protection fault ip:7f5a50e41037 sp:7fff4802a540 error:0 in libxul.so[7f5a4d16e000+4980000]
[ 2469.517282] traps: Web Content[4206] general protection fault ip:7f0bed4e07cf sp:7fff63dec110 error:0 in libxul.so[7f0be955d000+4980000]

VirtualBox is unusable.

Crashes occurs on:

• Linux (different kernel version) and Windows 10 guest OS (I have not checked other systems).
• different VirtualBox versions: 5.2.38; 6.0.18; 6.1.4 (I have not checked other versions)
• different Linux host kernel versions: 4.14; 4.19; 5.5 (other kernel versions not checked)

Please help to investigate.

[Frank Batschulat (Oracle)]

please contact the appropriate Ubuntu 20 beta forums for application debugging support.

[A C]

Replying to fbatschu:

please contact the appropriate Ubuntu 20 beta forums for application debugging support.

why should I contact Ubuntu 20 forums, why not to contact Microsoft support? their os also crashes under VB...

[Frank Batschulat (Oracle)]

Replying to A C:

Replying to fbatschu:

please contact the appropriate Ubuntu 20 beta forums for application debugging support.

why should I contact Ubuntu 20 forums, why not to contact Microsoft support? their os also crashes under VB...

Because you have reported and shown examples of applications (Brave and Webkit) crashing in Ubuntu 20 Beta running as a guest. There is no report or failure event about Virtualbox misbehaving. At leats not in this ticket you filed so far.