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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Segmentation fault in sna_dri2_get_back()"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82979">82979</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>Segmentation fault in sna_dri2_get_back()
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>john.lindgren@aol.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=105130" name="attach_105130" title="Log">attachment 105130</a> <a href="attachment.cgi?id=105130&action=edit" title="Log">[details]</a></span>
Log
The following crash occurs frequently when I'm logging in or out. I'm using
XFCE with Compton as compositor. xorg.conf contains only the NoTrapSignals
flag, everything is default settings.
Dell Latitude E5530
Intel(R) Core(TM) i5-3210M CPU @ 2.50GHz
Arch Linux x86_64
linux 3.16.1-1
xorg-server 1.16.0-6
xf86-video-intel 2.99.914-4
Log file is attached (from an older build than the backtrace below, but it's
the same crash). Please let me know if there is any more info that would be
useful.
Core was generated by `/usr/bin/Xorg.bin :1 vt7'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 sna_dri2_get_back (info=0x1848b00, back=0x16ef3a0, draw=0x142d180,
sna=0x7f7365a25000) at sna_dri2.c:164
164 if (c->bo && c->bo->scanout == 0) {
(gdb) bt full
#0 sna_dri2_get_back (info=0x1848b00, back=0x16ef3a0, draw=0x142d180,
sna=0x7f7365a25000) at sna_dri2.c:164
c = 0x32000000320
bo = <optimized out>
name = 0
reuse = true
#1 sna_dri2_reuse_buffer (draw=0x142d180, buffer=0x16ef3a0) at sna_dri2.c:282
buffer = 0x16ef3a0
draw = 0x142d180
#2 0x0000000000562e73 in allocate_or_reuse_buffer (pDraw=0x142d180,
ds=<optimized out>, pPriv=0x16eedd0,
attachment=1, format=32, dimensions_match=<optimized out>,
buffer=0x182e460) at dri2.c:483
No locals.
#3 0x0000000000563cab in do_get_buffers (pDraw=0x20, width=0x556,
height=0x300, attachments=0x182c4b4,
count=25463640, out_count=0x1, has_format=1) at dri2.c:551
attachment = 1
pPriv = 0x0
buffers_changed = 0
#4 0x00000000005640db in DRI2GetBuffersWithFormat (pDraw=<optimized out>,
width=<optimized out>,
height=<optimized out>, attachments=<optimized out>, count=<optimized out>,
out_count=<optimized out>)
at dri2.c:668
No locals.
#5 0x0000000000565b7b in ProcDRI2GetBuffersWithFormat (client=<optimized out>)
at dri2ext.c:306
buffers = 0x0
status = 0
count = 154
pDrawable = 0x142d180
width = 8554624
height = 24045712
#6 ProcDRI2Dispatch (client=0x16ee890) at dri2ext.c:608
stuff = 0x182c4a0
#7 0x00000000004375c7 in Dispatch () at dispatch.c:432
clientReady = 0x16f0d30
result = <optimized out>
client = 0x16ee890
nready = 0
icheck = 0x82cb00 <checkForInput>
start_tick = 0
#8 0x000000000043b756 in dix_main (argc=3, argv=0x7fff76def158,
envp=<optimized out>) at main.c:296
i = <optimized out>
alwaysCheckForInput = {0, 1}
#9 0x00007f7363d35000 in __libc_start_main () from /usr/lib/libc.so.6
No symbol table info available.
#10 0x0000000000425bfe in _start ()
No symbol table info available.</pre>
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