[Bug 104806] plasmashell and other KDE binaries start to segfault after updating Mesa to 18.0.0 (radeon) - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 104806] plasmashell and other KDE binaries start to segfault after updating Mesa to 18.0.0 (radeon)
Date: Sat, 27 Jan 2018 08:39:29 +0000	[thread overview]
Message-ID: <bug-104806-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=104806

            Bug ID: 104806
           Summary: plasmashell and other KDE binaries start to segfault
                    after updating Mesa to 18.0.0 (radeon)
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: ao@thurston.ru
        QA Contact: dri-devel@lists.freedesktop.org

With Mesa 18.0.0 'plasmashell', 'ksplashqml' and 'kmail' binaries segfault
right after logging in into Plasma session, leaving coredumps behind.

If I downgrade Mesa package back to 17.3.3, everything works again.

I'm running Gentoo.

Video card:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Caicos [Radeon HD 6450/7450/8450 / R5 230 OEM]

Kernel driver: nouveau
X.Org driver: radeon

Something happens in r600_dri.so:

Core was generated by `/usr/bin/kmail -session
10dcd7cfcb000147846248200000156710141_1483955504_762746'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f37f999af50 in raise () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7f37fc86ea40 (LWP 892))]
(gdb) bt
#0  0x00007f37f999af50 in raise () from /lib64/libc.so.6
#1  0x00007f37fbb9f727 in KCrash::defaultCrashHandler(int) () from
/usr/lib64/libKF5Crash.so.5
#2  <signal handler called>
#3  0x00007f37f9a0d4f3 in ?? () from /lib64/libc.so.6
#4  0x00007f37bb154094 in ?? () from /usr/lib64/dri/r600_dri.so
#5  0x000055c4ec9e5de0 in ?? ()
#6  0x000055c4ec9d7fe0 in ?? ()
#7  0x000055c4ec9e5de0 in ?? ()
#8  0x00007f37bb254e2b in ?? () from /usr/lib64/dri/r600_dri.so
#9  0x0000000000000003 in ?? ()
#10 0x00007fff107efa90 in ?? ()
#11 0x0000000000000000 in ?? ()

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