On 02/05/17 12:43, Christophe Fergeau wrote:
> On Tue, May 02, 2017 at 11:39:08AM +0200, Daniel Pocock wrote:
>>
>>
>> Hi,
>>
>> I've observed that the Xorg process in my virtual server
>> sometimes crashes when I launch Firefox. Xorg.0.log had an error
>> about "Out of video memory: Could not allocate 7274816 bytes", so
>> I increased video RAM from 64MB to 256MB. On the last crash the
>> error about memory was not there, but I found this at the end of
>> Xorg.0.log:
>>
>> [170197.066] qxl_surface_create: Bad bpp: 1 (1) [170197.076]
>> qxl_surface_create: Bad bpp: 1 (1) [170228.641]
>> qxl_surface_create: Bad bpp: 1 (1) [170281.094]
>> qxl_surface_create: Bad bpp: 1 (1) [170281.641]
>> qxl_surface_create: Bad bpp: 1 (1)
>
> These ones keep happening I think, and are harmless
>
>>
>> and in journalctl I found:
>>
>> gdm-Xorg-:0[1538]: qxl_surface_create: Bad bpp: 1 (1)
>> iceweasel.desktop[4967]: Gtk-Message: Failed to load module
>> "canberra-gtk-module" gdm-Xorg-:0[1538]: qxl_surface_create: Bad
>> bpp: 1 (1) gdm-Xorg-:0[1538]: qxl_surface_create: Bad bpp: 1 (1)
>> gdm-Xorg-:0[1538]: Xorg: ../../../src/uxa/uxa-glyphs.c:991:
>> uxa_glyphs_via_mask: Assertion
>> `uxa_pixmap_is_offscreen(src_pixmap)' failed.
>>
>> at the moment of the crash. I opened a Debian bug[1] with that
>> error.
>
> Would you have a core file when that happens?
Got it, thanks for the help with coredumpctl:
# coredumpctl gdb
PID: 2379 (Xorg)
UID: 0 (root)
GID: 0 (root)
Signal: 6 (ABRT)
Timestamp: Tue 2017-05-02 15:44:40 CEST (5min ago)
Command Line: /usr/bin/Xorg :0 -novtswitch -background none -noreset
-verbose 3 -auth /var/run/gdm3/auth-for-Debian-gdm-xxx/database -seat
seat0 -nolisten tcp vt7
Executable: /usr/bin/Xorg
Control Group: /system.slice/gdm.service
Unit: gdm.service
Slice: system.slice
Coredump:
/var/lib/systemd/coredump/core.Xorg.0.0ad234920b8b47a9a29d0b22e3045725.2379.1493732680000000000000.xz
Message: Process 2379 (Xorg) of user 0 dumped core.
Stack trace of thread 2379:
#0 0x00007f66686a4067 __GI_raise (libc.so.6)
#1 0x00007f66686a5448 __GI_abort (libc.so.6)
#2 0x00007f666869d266 __assert_fail_base (libc.so.6)
#3 0x00007f666869d312 __GI___assert_fail (libc.so.6)
#4 0x00007f6664baee49 uxa_glyphs_via_mask (qxl_drv.so)
#5 0x00007f666a8ab643 n/a (n/a)
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
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License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
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Reading symbols from /usr/bin/Xorg...Reading symbols from
/usr/lib/debug//usr/bin/Xorg...done.
done.
[New LWP 2379]
[New LWP 2698]
[New LWP 2701]
[New LWP 2700]
[New LWP 2699]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/Xorg :0 -novtswitch -background none
-noreset -verbose 3 -auth /var/ru'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f66686a4067 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 0x00007f66686a4067 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007f66686a5448 in __GI_abort () at abort.c:89
#2 0x00007f666869d266 in __assert_fail_base (fmt=0x7f66687d5f18
"%s%s%s:%u: %s%sAssertion `%s' failed.\n%n",
assertion=assertion@entry=0x7f6664bb8460
"uxa_pixmap_is_offscreen(src_pixmap)", file=file@entry=0x7f6664bb8440
"../../../src/uxa/uxa-glyphs.c",
line=line@entry=991, function=function@entry=0x7f6664bb84d0
<__PRETTY_FUNCTION__.17755> "uxa_glyphs_via_mask") at assert.c:92
#3 0x00007f666869d312 in __GI___assert_fail (assertion=0x7f6664bb8460
"uxa_pixmap_is_offscreen(src_pixmap)",
file=0x7f6664bb8440 "../../../src/uxa/uxa-glyphs.c", line=991,
function=0x7f6664bb84d0 <__PRETTY_FUNCTION__.17755> "uxa_glyphs_via_mask")
at assert.c:101
#4 0x00007f6664baee49 in uxa_glyphs_via_mask (extents=<optimized
out>, glyphs=<optimized out>, list=<optimized out>, nlist=<optimized
out>,
yDst=<optimized out>, xDst=<optimized out>, ySrc=<optimized out>,
xSrc=<optimized out>, maskFormat=<optimized out>, pDst=<optimized out>,
pSrc=<optimized out>, op=<optimized out>) at
../../../src/uxa/uxa-glyphs.c:991
#5 uxa_glyphs (op=75 'K', pSrc=0x94b, pDst=0x6,
maskFormat=0x7f666b5b2ed0, xSrc=-512, ySrc=13936, nlist=1,
list=0x7fffe80a8250, glyphs=0x7fffe80a8650)
at ../../../src/uxa/uxa-glyphs.c:1158
#6 0x00007f666a8ab643 in damageGlyphs (op=<optimized out>,
pSrc=0x7f666bad2350, pDst=0x7f666ba8fbd0, maskFormat=0x7f666b5a61d8,
xSrc=<optimized out>,
ySrc=<optimized out>, nlist=1, list=0x7fffe80a8250,
glyphs=0x7fffe80a8650) at ../../../miext/damage/damage.c:568
#7 0x00007f666a8a1587 in ProcRenderCompositeGlyphs
(client=0x7f666ba80b30) at ../../render/render.c:1390
#8 0x00007f666a7c53f7 in Dispatch () at ../../dix/dispatch.c:432
#9 0x00007f666a7c9596 in dix_main (argc=15, argv=0x7fffe80a9058,
envp=<optimized out>) at ../../dix/main.c:296
#10 0x00007f6668690b45 in __libc_start_main (main=0x7f666a7b38e0
<main>, argc=15, argv=0x7fffe80a9058, init=<optimized out>,
fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fffe80a9048) at
libc-start.c:287
#11 0x00007f666a7b390e in _start ()
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