Package: nx-libs Version: 3.5.0.28

Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/lib64/nx/../x2go/bin/x2goagent -extension XFIXES -nolisten tcp -nolisten t'. Program terminated with signal SIGSEGV, Segmentation fault. #0 XKeycodeToKeysym (dpy=0x3ece520, kc=0 '\000', col=0) at XKBBind.c:122 122 if ((kc<xkb->min_key_code)||(kc>xkb->max_key_code))

Thread 1 (Thread 0x7f1ca40e7740 (LWP 1903)): #0 XKeycodeToKeysym (dpy=0x3ece520, kc=0 '\000', col=0) at XKBBind.c:122 xkb = 0x0

XKeycodeToKeysym(Display *dpy, #if NeedWidePrototypes unsigned int kc, #else KeyCode kc, #endif int col) { XkbDescRec *xkb;

if (_XkbUnavailable(dpy))
    return _XKeycodeToKeysym(dpy, kc, col);

_XkbCheckPendingRefresh(dpy,dpy->xkb_info);

xkb = dpy->xkb_info->desc;
if ((kc<xkb->min_key_code)||(kc>xkb->max_key_code))

Looks like we need a check for xkb being NULL before trying to reference it.

Looks like this is supposed to do that:

#define _XkbUnavailable(d)
(((d)->flags&XlibDisplayNoXkb) ||
((!(d)->xkb_info || (!(d)->xkb_info->desc)) && !_XkbLoadDpy(d)))

And _XkbLoadDpy(d) should have initialized dpy->xkb_info->desc, so I'm really not sure how this could happen. Unless _XkbCheckPendingRefresh could have set it back to NULL:

#define _XkbCheckPendingRefresh(d,xi) {
if ((xi)->flags&XkbXlibNewKeyboard)
_XkbReloadDpy((d));
else if ((xi)->flags&XkbMapPending) {
if (XkbGetMapChanges((d),(xi)->desc, &(xi)->changes)==Success) {
LockDisplay((d));
(xi)->changes.changed= 0;
UnlockDisplay((d));
}
}
}

Also not sure if returning from hibernate is something worth supporting gracefully.

-------- Forwarded Message -------- Subject: [Bug 1172639] New: [abrt] nxagent: XKeycodeToKeysym(): nxagent killed by SIGSEGV Date: Wed, 10 Dec 2014 13:44:59 +0000 From: bugzilla@redhat.com To: orion@cora.nwra.com

https://bugzilla.redhat.com/show_bug.cgi?id=1172639

        Bug ID: 1172639
       Summary: [abrt] nxagent: XKeycodeToKeysym(): nxagent killed by
                SIGSEGV
       Product: Fedora
       Version: 21
     Component: nx-libs
      Assignee: orion@cora.nwra.com
      Reporter: ndbecker2@gmail.com
    QA Contact: extras-qa@fedoraproject.org
            CC: orion@cora.nwra.com

Description of problem: using x2go, put laptop into hibernate. Then woke up. Tried to reconnect.

Version-Release number of selected component: nxagent-3.5.0.28-1.fc21

Additional info: reporter: libreport-2.3.0 backtrace_rating: 4 cmdline: /usr/lib64/nx/../x2go/bin/x2goagent -extension XFIXES -nolisten tcp -nolisten tcp -dpi 115 -D -auth /home/nbecker/.Xauthority -geometry 1680x1015 -name X2GO-nbecker-91-1418065897_stDKDE_dp24 :91 crash_function: XKeycodeToKeysym executable: /usr/lib64/nx/bin/nxagent kernel: 3.17.4-301.fc21.x86_64 runlevel: N 5 type: CCpp uid: 1000

Truncated backtrace: Thread no. 1 (8 frames) #0 XKeycodeToKeysym at XKBBind.c:122 #1 find_keystroke at Keystroke.c:395 #2 nxagentCheckSpecialKeystroke at Keystroke.c:420 #3 nxagentDispatchEvents at Events.c:1178 #4 nxagentBlockHandler at Handlers.c:488 #5 BlockHandler at dixutils.c:442 #6 WaitForSomething at WaitFor.c:257 #7 Dispatch at X/NXdispatch.c:619

-- You are receiving this mail because: You are on the CC list for the bug. You are the assignee for the bug.