Since I upgraded my Gentoo box from Mesa 10.2.0 RC3 to Mesa 10.2.0 RC5 I'm experiencing segfaults when I try to play videos in VLC on my KDE 4.13.1 desktop.

The playback works sometimes after xserver has been restarted, but after a while starting the video causes xserver to segfault again.


Output from Xorg.0.log.old:

[ 17102.500] (EE) Backtrace:
[ 17102.500] (EE) 0: /usr/bin/X (xorg_backtrace+0x48) [0x596cd0]
[ 17102.500] (EE) 1: /usr/bin/X (0x400000+0x19aa55) [0x59aa55]
[ 17102.500] (EE) 2: /lib64/libc.so.6 (0x3b34e00000+0x38580) [0x3b34e38580]
[ 17102.500] (EE) 3: /usr/lib64/dri/radeonsi_dri.so (0x7f75b2b0d000+0x6c4b9) [0x7f75b2b794b9]
[ 17102.500] (EE) 4: /usr/lib64/dri/radeonsi_dri.so (0x7f75b2b0d000+0x6b36b) [0x7f75b2b7836b]
[ 17102.501] (EE) 5: /usr/lib64/dri/radeonsi_dri.so (0x7f75b2b0d000+0x1bdc9e) [0x7f75b2ccac9e]
[ 17102.501] (EE) 6: /usr/lib64/dri/radeonsi_dri.so (0x7f75b2b0d000+0x198f15) [0x7f75b2ca5f15]
[ 17102.501] (EE) 7: /usr/lib64/dri/radeonsi_dri.so (0x7f75b2b0d000+0x13952b) [0x7f75b2c4652b]
[ 17102.501] (EE) 8: /usr/lib64/xorg/modules/libglamoregl.so (0x7f75b4fa3000+0x1baa) [0x7f75b4fa4baa]
[ 17102.501] (EE) 9: /usr/lib64/xorg/modules/libglamoregl.so (glamor_egl_create_argb8888_based_texture+0x9d) [0x7f75b4fa4fff]
[ 17102.501] (EE) 10: /usr/lib64/libglamor.so.0 (0x7f75b4901000+0x2632e) [0x7f75b492732e]
[ 17102.501] (EE) 11: /usr/lib64/libglamor.so.0 (0x7f75b4901000+0x26c05) [0x7f75b4927c05]
[ 17102.501] (EE) 12: /usr/lib64/libglamor.so.0 (glamor_create_pixmap+0x229) [0x7f75b4906018]
[ 17102.501] (EE) 13: /usr/lib64/xorg/modules/drivers/radeon_drv.so (0x7f75b356f000+0x55d7c) [0x7f75b35c4d7c]
[ 17102.501] (EE) 14: /usr/bin/X (0x400000+0x358f9) [0x4358f9]
[ 17102.501] (EE) 15: /usr/bin/X (0x400000+0x39d87) [0x439d87]
[ 17102.501] (EE) 16: /usr/bin/X (0x400000+0x3d855) [0x43d855]
[ 17102.501] (EE) 17: /usr/bin/X (0x400000+0x29395) [0x429395]
[ 17102.501] (EE) 18: /lib64/libc.so.6 (__libc_start_main+0xf5) [0x3b34e24bf5]
[ 17102.501] (EE) 19: /usr/bin/X (0x400000+0x292c9) [0x4292c9]
[ 17102.501] (EE) 
[ 17102.501] (EE) Segmentation fault at address 0x10
[ 17102.501] (EE) 
Fatal server error:
[ 17102.501] (EE) Caught signal 11 (Segmentation fault). Server aborting


Backtrace I obtained from gdb -p $(pidof X):

Program received signal SIGSEGV, Segmentation fault.
0x00007f75b2b794b9 in dri2_lookup_egl_image (screen=<optimized out>, handle=0x34f0140) at dri2.c:564
564     dri2.c: Datei oder Verzeichnis nicht gefunden.
(gdb) bt full
#0  0x00007f75b2b794b9 in dri2_lookup_egl_image (screen=<optimized out>, handle=0x34f0140) at dri2.c:564
        loader = 0x0
        img = <optimized out>
#1  0x00007f75b2b7836b in dri_get_egl_image (smapi=<optimized out>, egl_image=<optimized out>, stimg=0x7fffef803e40) at dri_screen.c:321
        screen = <optimized out>
        img = 0x0
#2  0x00007f75b2ccac9e in st_manager_get_egl_image_surface (st=0x3288c80, eglimg=<optimized out>) at state_tracker/st_manager.c:837
        smapi = <optimized out>
        stimg = {texture = 0x0, level = 0, layer = 0}
        ps = <optimized out>
        surf_tmpl = {reference = {count = -276808096}, texture = 0x3b351a5640, context = 0x7fffef803e80, format = 2283648, width = 0, height = 112, writable = 0, u = {tex = {level = 59459456, 
              first_layer = 0, last_layer = 0}, buf = {first_element = 59459456, last_element = 0}}}
#3  0x00007f75b2ca5f15 in st_egl_image_target_texture_2d (ctx=0x3257240, target=<optimized out>, texObj=0x34cff00, texImage=0x300a420, image_handle=<optimized out>) at state_tracker/st_cb_eglimage.c:147
        ps = <optimized out>
#4  0x00007f75b2c4652b in _mesa_EGLImageTargetTexture2DOES (target=3553, image=0x34f0140) at main/teximage.c:3388
        texObj = 0x34cff00
        texImage = 0x300a420
        valid_target = <optimized out>
        ctx = 0x3257240
#5  0x00007f75b4fa4baa in glamor_create_texture_from_image (glamor_egl=glamor_egl@entry=0x14ec080, image=image@entry=0x34f0140, texture=texture@entry=0x7fffef803f4c)
    at /var/tmp/portage/x11-libs/glamor-9999/work/glamor-9999/src/glamor_egl.c:217
No locals.
#6  0x00007f75b4fa4fff in glamor_egl_create_argb8888_based_texture (screen=0x15d2e00, w=w@entry=88, h=h@entry=88) at /var/tmp/portage/x11-libs/glamor-9999/work/glamor-9999/src/glamor_egl.c:256
        scrn = <optimized out>
        glamor_egl = 0x14ec080
        image = 0x34f0140
        texture = 19
        bo = 0x3522f10
        native_pixmap = 0x3522f10
#7  0x00007f75b492732e in _glamor_create_tex (glamor_priv=glamor_priv@entry=0x15ff510, w=w@entry=88, h=h@entry=88, format=format@entry=6408)
    at /var/tmp/portage/x11-libs/glamor-9999/work/glamor-9999/src/glamor_fbo.c:344
        tex = 0
#8  0x00007f75b4927c05 in glamor_create_fbo (glamor_priv=glamor_priv@entry=0x15ff510, w=w@entry=88, h=h@entry=88, format=format@entry=6408, flag=flag@entry=0)
    at /var/tmp/portage/x11-libs/glamor-9999/work/glamor-9999/src/glamor_fbo.c:392
        fbo = <optimized out>
        tex = 0
        cache_flag = <optimized out>
#9  0x00007f75b4906018 in glamor_create_pixmap (screen=screen@entry=0x15d2e00, w=w@entry=88, h=h@entry=88, depth=depth@entry=24, usage=usage@entry=0)
    at /var/tmp/portage/x11-libs/glamor-9999/work/glamor-9999/src/glamor.c:175
        pixmap = 0x300a4a0
        type = GLAMOR_TEXTURE_ONLY
        pixmap_priv = 0x300a520
        glamor_priv = 0x15ff510
        fbo = 0x0
        pitch = <optimized out>
        format = 6408
#10 0x00007f75b35c4d7c in radeon_glamor_create_pixmap (screen=0x15d2e00, w=88, h=88, depth=24, usage=0)
    at /var/tmp/portage/x11-drivers/xf86-video-ati-7.3.0/work/xf86-video-ati-7.3.0/src/radeon_glamor.c:185
        scrn = 0x14ea150
        priv = <optimized out>
        pixmap = <optimized out>
        new_pixmap = 0x0
#11 0x00000000004358f9 in ProcCreatePixmap (client=0x20d6890) at /var/tmp/portage/x11-base/xorg-server-1.15.99.902-r2/work/xorg-server-1.15.99.902/dix/dispatch.c:1392
        pMap = <optimized out>
        pDraw = 0x1dbcda0
        stuff = 0x2f0bb70
        pDepth = <optimized out>
        i = <optimized out>
        rc = <optimized out>
#12 0x0000000000439d87 in Dispatch () at /var/tmp/portage/x11-base/xorg-server-1.15.99.902-r2/work/xorg-server-1.15.99.902/dix/dispatch.c:432
        clientReady = 0x1f73160
        result = 0
        client = 0x20d6890
        nready = 0
        icheck = 0x81e4d0 <checkForInput>
        start_tick = 640
#13 0x000000000043d855 in dix_main (argc=10, argv=0x7fffef804308, envp=<optimized out>) at /var/tmp/portage/x11-base/xorg-server-1.15.99.902-r2/work/xorg-server-1.15.99.902/dix/main.c:296
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#14 0x0000000000429395 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at /var/tmp/portage/x11-base/xorg-server-1.15.99.902-r2/work/xorg-server-1.15.99.902/dix/stubmain.c:34
No locals.


Hardware used:
- AMD Cape Verde XT (Radeon HD 7770)

Software used:
- Mesa 10.2.0 RC5
- llvm 3.4.1
- xorg-server 1.15.99.902
- xf86-video-ati 7.3.0
- glamor from git
- KWin 4.13.1