Bug 215027 - gnome-settings-daemon unaligned accesses
gnome-settings-daemon unaligned accesses
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: control-center (Show other bugs)
ia64 Linux
medium Severity medium
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Assigned To: Ray Strode [halfline]
David Lawrence
: Desktop, Reopened
Depends On:
  Show dependency treegraph
Reported: 2006-11-10 12:39 EST by Bastien Nocera
Modified: 2007-11-30 17:07 EST (History)
3 users (show)

See Also:
Fixed In Version: beta2
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2007-01-04 14:08:12 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
GNOME Bugzilla 392853 None None None Never

  None (edit)
Description Bastien Nocera 2006-11-10 12:39:31 EST

Nov 10 15:38:24 localhost kernel: gnome-settings-(3913): unaligned access to
0x60000ffffe1fb42c, ip=0x2000000001d2add0

The keyboard code strikes again! Adding a prctl() at the start of the code is
probably the easiest to avoid insanity.

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This GDB was configured as "ia64-redhat-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".

(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 2305843009259911824 (LWP 5158)]
[New Thread 2305843009331261968 (LWP 5164)]

Program received signal SIGBUS, Bus error.
[Switching to Thread 2305843009259911824 (LWP 5158)]
_XData32 (dpy=0x600000000003c800, data=0x60000fffffc234cc, len=0)
   at XlibInt.c:3056
3056                *buf++ = *data++;
#0  _XData32 (dpy=0x600000000003c800, data=0x60000fffffc234cc, len=0)
   at XlibInt.c:3056
#1  0x2000000001cbb5f0 in XChangeProperty (dpy=0x600000000003c800, w=40,
   property=267, type=19, format=32, mode=0, data=0x60000fffffc234cc "",
   nelements=<value optimized out>) at ChProp.c:85
#2  0x2000000000194770 in xkl_engine_set_switch_to_secondary_group (
   engine=<value optimized out>, val=0) at xklavier.c:71
#3  0x2000000000194b60 in xkl_engine_constructor (type=<value optimized out>,
   n_construct_properties=<value optimized out>,
   construct_properties=<value optimized out>) at xklavier.c:627
#4  0x2000000001a3fac0 in g_object_newv () from /lib/libgobject-2.0.so.0
#5  0x2000000001a41450 in g_object_new_valist () from /lib/libgobject-2.0.so.0
#6  0x2000000001a41710 in g_object_new () from /lib/libgobject-2.0.so.0
#7  0x2000000000194520 in xkl_engine_get_instance (display=0x600000000003c800)
   at xklavier.c:194
#8  0x40000000000193c0 in ?? ()
3051                i = len;
3052            dpy->bufptr = (char *)buf + i;
3053            len -= i;
3054            i >>= 2;
3055            while (--i >= 0)
3056                *buf++ = *data++;
3057        }
3058        return 0;
3059    }
3060    #endif /* LONG64 */
#2  0x2000000000194770 in xkl_engine_set_switch_to_secondary_group (
   engine=<value optimized out>, val=0) at xklavier.c:71
71              XChangeProperty(dpy,
66      static void
67      xkl_engine_set_switch_to_secondary_group(XklEngine * engine, gboolean val)
68      {
69              CARD32 propval = (CARD32) val;
70              Display *dpy = xkl_engine_get_display(engine);
71              XChangeProperty(dpy,
72                              xkl_engine_priv(engine, root_window),
73                              xkl_engine_priv(engine,
74                                              atoms)[XKLAVIER_ALLOW_SECONDARY],
75                              XA_INTEGER, 32, PropModeReplace,
Comment 1 RHEL Product and Program Management 2006-11-10 13:01:00 EST
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
Comment 2 Ray Strode [halfline] 2006-11-10 14:36:58 EST
ah this looks like the age-old XChangeProperty has the weirdest semantics ever bug.

I think the CARD32 is supposed to be a long there.  (even on platforms where
long isn't 32-bit)
Comment 3 Ray Strode [halfline] 2006-11-10 14:44:09 EST
Hey, i've built libxklavier-3.0-3.el5 with the change mentioned in comment 2. 
Can you give it a whirl (i don't have access to an ia64 machine).  If it works,
we should push this upstream.
Comment 4 RHEL Product and Program Management 2006-12-22 21:30:33 EST
A package has been built which should help the problem described in 
this bug report. This report is therefore being closed with a resolution 
of CURRENTRELEASE. You may reopen this bug report if the solution does 
not work for you.
Comment 5 Ray Strode [halfline] 2006-12-22 21:51:44 EST
Comment 6 Ray Strode [halfline] 2006-12-22 21:54:13 EST
oops, ignore comment 5.

I'm reopening this bug because I want to make sure the fix fixed the problem. 
It was never verified by Bastien or QA.

(If it is verified, then I want to get the fix upstream)

Bastien, can you confirm?
Comment 8 Bastien Nocera 2007-01-03 09:49:27 EST
I don't have an updated RHEL5 ia64 machine at hand, so I can't verify the fix.

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