Bug#948288: gnome-shell reproducibly crashes on boot, and the boot process gets stuck

[Bernhard Übelacker]

Hello Md Ayquassar,


Am 31.01.20 um 02:23 schrieb Md Ayquassar:

> Second, is a reassignment to some Mesa package required?

I guess mesa maintainer would have more insight if
that function pointer is allowed to be NULL, there
possibly yes.

I wonder if the content of /var/log/Xorg.0.log* would
reveal some more error messages?
Just for a workaround, does giving nomodeset on the kernel prompt
a different result?


> Third, is there anything else I can do as a user to help the developers
> to bugfix this? Bug at line 1017 is strange: if there is a NULL
> dereference there, there should also probably be one in line 1016 unless
> someone has a deterministic concurrent access to that data.

> https://sources.debian.org/src/mesa/18.3.6-2/src/egl/drivers/dri2/egl_dri2.c/#L1017

I assume line 1017, 1018 and 1019 are one statement, therefore gdb shows 1017.
Further I think the function pointer "dri2_dpy->dri2->allocateBuffer"
contains the NULL, therefore the "ip 00000000" in your dmesg output.
A "regular" segfault should still show a sane instruction pointer value.


Kind regards,
Bernhard