Created attachment 1207996 [details]
File: backtrace

Created attachment 1207997 [details]
File: dmesg

Created attachment 1207998 [details]
File: dso_list

Created attachment 1207999 [details]
File: etc_X11_xorg_conf_d.tar.gz

Created attachment 1208000 [details]
File: usr_share_xorg_conf_d.tar.gz

Description of problem:
Random crash during playing War Thunder in Wine (CSMT enabled, Lowest settings). 
War Thunder crashed first, then entire Xserver.

Version-Release number of selected component:
xorg-x11-server-Xorg-1.19.0-0.2.20160929.fc25

Additional info:
reporter:       libreport-2.8.0
executable:     /usr/libexec/Xorg
kernel:         4.8.0-0.rc8.git0.1.fc25.x86_64
pkg_fingerprint: 4089 D8F2 FDB1 9C98
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           xorg
uid:            0

Truncated backtrace:
0: /usr/libexec/Xorg (OsLookupColor+0x139) [0x59df59]
1: /lib64/libpthread.so.0 (__restore_rt+0x0) [0x7f4221d985bf]
2: /usr/libexec/Xorg (FlushAllOutput+0x63) [0x59d5d3]
3: /usr/libexec/Xorg (SendErrorToClient+0x30d) [0x436f7d]
4: /usr/libexec/Xorg (InitFonts+0x428) [0x43afb8]
5: /lib64/libc.so.6 (__libc_start_main+0xf1) [0x7f42219e1401]
6: /usr/libexec/Xorg (_start+0x2a) [0x424c9a]
7: ? (?+0x2a) [0x2a]

Description of problem:
Usual workload, edit files with gedit, Files was opened, a terminal (ssh into my local server) window and firefox ( 4 tabs )

The pc became unresponsive then I was kicked out to the login screen.

Version-Release number of selected component:
xorg-x11-server-Xorg-1.19.0-0.2.20160929.fc25

Additional info:
reporter:       libreport-2.8.0
executable:     /usr/libexec/Xorg
kernel:         4.8.0-0.rc8.git0.1.fc25.x86_64
pkg_fingerprint: 4089 D8F2 FDB1 9C98
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           xorg
uid:            0

Truncated backtrace:
0: /usr/libexec/Xorg (OsLookupColor+0x139) [0x59df59]
1: /lib64/libpthread.so.0 (__restore_rt+0x0) [0x7f8456ca25bf]
2: /usr/libexec/Xorg (FlushAllOutput+0x63) [0x59d5d3]
3: /usr/libexec/Xorg (SendErrorToClient+0x30d) [0x436f7d]
4: /usr/libexec/Xorg (InitFonts+0x428) [0x43afb8]
5: /lib64/libc.so.6 (__libc_start_main+0xf1) [0x7f84568eb401]
6: /usr/libexec/Xorg (_start+0x2a) [0x424c9a]
7: ? (?+0x2a) [0x2a]

Hi,

2 questions:

1) How are you starting Xorg (graphical login with GDM, startx, ... ? )
2) Which desktop environment are you using

Regards,

Hans

1) GDM
2) GNOME

Same here:

1) GDM
2) GNOME

Actually, I reckon the symbols in the backtrace are unlikely to be correct.

Instead "addr2line -fe /usr/lib/debug/usr/libexec/Xorg.debug 0x59d5d3 0x436f7d 0x43afb8" gives:

  FlushAllOutput() in /usr/src/debug/xorg-server-20160929/os/io.c:612
  Dispatch() in /usr/src/debug/xorg-server-20160929/dix/dispatch.c:3491
  dix_main() in /usr/src/debug/xorg-server-20160929/dix/main.c:296

with /usr/src/debug/xorg-server-20160929/os/io.c:612 

 612     xorg_list_for_each_entry_safe(client, tmp, &output_pending_clients, output_pending) {
 613         if (client->clientGone)
 614             continue;
 615         if (!client_is_ready(client)) {
 616             oc = (OsCommPtr) client->osPrivate;
 617             (void) FlushClient(client, oc, (char *) NULL, 0);
 618         } else
 619             NewOutputPending = TRUE;
 620     }

So it could be that output_pending_clients list got corrupted somehow.

This is happening to me every few hours on Fedora 25 (GDM, Gnome). And seems to be related to other problems (they happen at the same time according to abrt):

https://bugzilla.redhat.com/show_bug.cgi?id=1384056
https://bugzilla.redhat.com/show_bug.cgi?id=1384508
https://bugzilla.redhat.com/show_bug.cgi?id=1390198

The system is really unusable with this.

This happens for me too. 1384508 was rejected as a blocker today, but if these bugs are related there may be grounds for reconsideration.

GNOME apps in X11 need the Xorg server, if it dies unexpectedly, the apps will die as well.

So I reckon the real issue is this bug, the other crashes that occurs in GNOME at the same time are most likely side effects of this one.

This problem seems to have gone away for me after I changed from SNA to modesetting driver (using Intel graphics), so I'd say the real issue is #1384486.

I have Radeon:
05:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Juniper XT [Radeon HD 5770]
And I am using radeon driver, so I don't think it's an SNA issue.

*** Bug 1384056 has been marked as a duplicate of this bug. ***

*** Bug 1384561 has been marked as a duplicate of this bug. ***

*** Bug 1389078 has been marked as a duplicate of this bug. ***

xorg-x11-server-1.19.0-0.7.rc2.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-662f51a695

*** Bug 1391767 has been marked as a duplicate of this bug. ***

This happens to me when in MATE but doesn't when in Gnome with wayland.

xorg-x11-server-1.19.0-0.7.rc2.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-662f51a695

(In reply to Fedora Update System from comment #23)
> xorg-x11-server-1.19.0-0.7.rc2.fc25 has been pushed to the Fedora 25 testing
> repository. If problems still persist, please make note of it in this bug
> report.

Can someone experiencing this issue please test this update and report whether it resolves the problem? This bug is blocking the upstream 1.19 xserver release, so we need to know if this is a fix or if we need to investigate further.

(In reply to Adam Jackson from comment #24)
> Can someone experiencing this issue please test this update and report
> whether it resolves the problem? This bug is blocking the upstream 1.19
> xserver release, so we need to know if this is a fix or if we need to
> investigate further.

I've had that update since the day it was released, and I haven't hit this bug since. I'm not sure what I was doing the only time that I previously encountered it, so I don't know how to reproduce it. In any case, I'll leave positive karma in bodhi now

(In reply to Adam Jackson from comment #24)
> (In reply to Fedora Update System from comment #23)
> > xorg-x11-server-1.19.0-0.7.rc2.fc25 has been pushed to the Fedora 25 testing
> > repository. If problems still persist, please make note of it in this bug
> > report.
> 
> Can someone experiencing this issue please test this update and report
> whether it resolves the problem? This bug is blocking the upstream 1.19
> xserver release, so we need to know if this is a fix or if we need to
> investigate further.

Never happened to me since the update.

xorg-x11-server-1.19.0-0.7.rc2.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.