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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Segfault with amdgpu dri3 and 2d acceleration disabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94214">94214</a>
</td>
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<th>Summary</th>
<td>Segfault with amdgpu dri3 and 2d acceleration disabled
</td>
</tr>
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<th>Product</th>
<td>xorg
</td>
</tr>
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<th>Version</th>
<td>git
</td>
</tr>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Driver/AMDgpu
</td>
</tr>
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<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
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<th>Reporter</th>
<td>csaba.halasz@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Running X with option AccelMethod "none" (possibly also option noaccel) causes
segfault if dri3 is enabled:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x00007fc9a1c87db8 in amdgpu_dri3_pixmap_from_fd (screen=0x561f9d7c1e40,
fd=26, width=16, height=<optimized out>,
stride=128, depth=<optimized out>, bpp=32 ' ') at
../../src/amdgpu_dri3.c:149
#2 0x0000561f9c32d289 in dri3_pixmap_from_fd
(ppixmap=ppixmap@entry=0x7ffc1c145628, screen=<optimized out>, fd=fd@entry=26,
width=<optimized out>, height=<optimized out>, stride=128, depth=24 '\030',
bpp=32 ' ') at ../../dri3/dri3_screen.c:73
#3 0x0000561f9c32cdfa in proc_dri3_pixmap_from_buffer (client=0x561f9dc17e50)
at ../../dri3/dri3_request.c:162
#4 0x0000561f9c1fe12e in Dispatch () at ../../dix/dispatch.c:430
#5 0x0000561f9c201ecb in dix_main (argc=5, argv=0x7ffc1c145808,
envp=<optimized out>) at ../../dix/main.c:300
#6 0x00007fc9a50baead in __libc_start_main (main=<optimized out>,
argc=<optimized out>, ubp_av=<optimized out>,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7ffc1c1457f8) at libc-start.c:244
#7 0x0000561f9c1ec6b1 in _start ()
The offending line seems to be
if (screen->SetSharedPixmapBacking(pixmap, (void*)(intptr_t)fd))
return pixmap;
Version info: Xorg 1.18, amdgpu git a3eac85d</pre>
</div>
</p>
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