[Bug 94465] Xorg crashes in VT switch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94465

--- Comment #14 from Chris Wilson <chris at chris-wilson.co.uk> ---
Yes! Almost there:

==596== Invalid free() / delete / delete[] / realloc()
==596==    at 0x4C2BCEA: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4C2CAB0: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4B832D: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4B916A: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x9527BBE: ??? (in /usr/lib/xorg/modules/extensions/libglx.xorg)
==596==    by 0x4773B7: xf86VTEnter (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4A0C46: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4A0F4A: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4E4D084: dbus_connection_dispatch (in
/usr/lib/libdbus-1.so.3.14.6)
==596==    by 0x4E4D3EC: ??? (in /usr/lib/libdbus-1.so.3.14.6)
==596==    by 0x49A0B0: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x43AE0C: WakeupHandler (in /usr/lib/xorg-server/Xorg)
==596==  Address 0xc6c5670 is 0 bytes inside a block of size 1,536 free'd
==596==    at 0x4C2BCEA: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4C2CAB0: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4B832D: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4B916A: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x9527BBE: ??? (in /usr/lib/xorg/modules/extensions/libglx.xorg)
==596==    by 0x4773B7: xf86VTEnter (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4A0C46: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4A0F4A: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4E4D084: dbus_connection_dispatch (in
/usr/lib/libdbus-1.so.3.14.6)
==596==    by 0x4E4D3EC: ??? (in /usr/lib/libdbus-1.so.3.14.6)
==596==    by 0x49A0B0: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x43AE0C: WakeupHandler (in /usr/lib/xorg-server/Xorg)
==596==  Block was alloc'd at
==596==    at 0x4C2ABD0: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4C2CA9E: realloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==596==    by 0x4ADF6F: xf86CrtcCreate (in /usr/lib/xorg-server/Xorg)
==596==    by 0xC0ADC18: add_fake_output (in
/usr/lib/xorg/modules/drivers/intel_drv.so)
==596==    by 0xC0AE010: sna_output_detect (in
/usr/lib/xorg/modules/drivers/intel_drv.so)
==596==    by 0x4AF444: xf86ProbeOutputModes (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4B8966: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x4FA56A: RRGetInfo (in /usr/lib/xorg-server/Xorg)
==596==    by 0x50329F: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x43626E: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x43A282: ??? (in /usr/lib/xorg-server/Xorg)
==596==    by 0x69B770F: (below main) (in /usr/lib/libc-2.23.so)

We just need a few more symbols. Can you install the debug symbols for the
Xserver?

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