On 2020-02-07 9:33 p.m., Frédéric Brière wrote: > Package: xserver-xorg-core > Version: 2:1.20.7-2 > Severity: important > > I can (reliably) get X to segfault when displaying a big image (say, > over 10000x10000) with xzgv. And since that viewer allows doubling the > scale of an image with a single keystroke, this can easily be triggered > with any image (which is how I accidentally ran into it in the first > place). > > Steps to reproduce: > > - View any image (the bigger the better) with xzgv > - Repeatedly press "d" until the server segfaults > > The error message is identical to #912325, although I am using the > radeon driver: > > [ 94509.215] (EE) glamor0: GL error: GL_OUT_OF_MEMORY in glBufferData > [ 94509.215] (EE) glamor0: GL error: GL_INVALID_OPERATION in > glReadPixels(out of bounds PBO access) > [ 94509.215] (EE) glamor0: GL error: GL_INVALID_OPERATION in > glMapBuffer(length = 0) > > This was encountered with 2:1.20.7-2, and confirmed to be still present > in -3. > > Full log and backtrace with symbols are attached.
Can't see the backtrace, but the log excerpt above looks like the fixes from https://gitlab.freedesktop.org/xorg/xserver/merge_requests/135 might help, so I added them to https://gitlab.freedesktop.org/xorg/xserver/merge_requests/391 and they will hopefully be in the upcoming 1.20.8 release. -- Earthling Michel Dänzer | https://redhat.com Libre software enthusiast | Mesa and X developer
