gdb session: X segfaults on SIGTERM

Xorg-gdb.log (text/plain), 13.02 KB, created by Raffaello D. Di Napoli on 2011-06-18 15:02:13 UTC

$ sudo gdb --pid=$(pidof X)
Password:
GNU gdb (Gentoo 7.2 p1) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>.
Attaching to process 1063
Reading symbols from /usr/bin/Xorg...Reading symbols from /usr/lib/debug/usr/bin/Xorg.debug...done.
done.
Reading symbols from /lib/libudev.so.0...Reading symbols from /usr/lib/debug/lib/libudev.so.0.9.3.debug...done.
done.
Loaded symbols for /lib/libudev.so.0
Reading symbols from /usr/lib/libgcrypt.so.11...Reading symbols from /usr/lib/debug/usr/lib/libgcrypt.so.11.6.0.debug...done.
done.
Loaded symbols for /usr/lib/libgcrypt.so.11
Reading symbols from /lib/libdl.so.2...Reading symbols from /usr/lib/debug/lib/libdl-2.12.2.so.debug...(no debugging symbols found)...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /usr/lib/libpciaccess.so.0...Reading symbols from /usr/lib/debug/usr/lib/libpciaccess.so.0.10.8.debug...done.
done.
Loaded symbols for /usr/lib/libpciaccess.so.0
Reading symbols from /lib/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/libpthread-2.12.2.so.debug...done.
[Thread debugging using libthread_db enabled]
done.
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /usr/lib/libpixman-1.so.0...Reading symbols from /usr/lib/debug/usr/lib/libpixman-1.so.0.20.2.debug...done.
done.
Loaded symbols for /usr/lib/libpixman-1.so.0
Reading symbols from /usr/lib/libXfont.so.1...Reading symbols from /usr/lib/debug/usr/lib/libXfont.so.1.4.1.debug...done.
done.
Loaded symbols for /usr/lib/libXfont.so.1
Reading symbols from /usr/lib/libXau.so.6...Reading symbols from /usr/lib/debug/usr/lib/libXau.so.6.0.0.debug...done.
done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXdmcp.so.6...Reading symbols from /usr/lib/debug/usr/lib/libXdmcp.so.6.0.0.debug...done.
done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /lib/libm.so.6...Reading symbols from /usr/lib/debug/lib/libm-2.12.2.so.debug...done.
done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/librt.so.1...Reading symbols from /usr/lib/debug/lib/librt-2.12.2.so.debug...done.
done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /lib/libc.so.6...Reading symbols from /usr/lib/debug/lib/libc-2.12.2.so.debug...done.
done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /usr/lib/libgpg-error.so.0...Reading symbols from /usr/lib/debug/usr/lib/libgpg-error.so.0.8.0.debug...done.
done.
Loaded symbols for /usr/lib/libgpg-error.so.0
Reading symbols from /lib/ld-linux.so.2...Reading symbols from /usr/lib/debug/lib/ld-2.12.2.so.debug...done.
done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libz.so.1
Reading symbols from /usr/lib/libfreetype.so.6...Reading symbols from /usr/lib/debug/usr/lib/libfreetype.so.6.6.2.debug...done.
done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /lib/libbz2.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libbz2.so.1
Reading symbols from /usr/lib/libfontenc.so.1...Reading symbols from /usr/lib/debug/usr/lib/libfontenc.so.1.0.0.debug...done.
done.
Loaded symbols for /usr/lib/libfontenc.so.1
Reading symbols from /usr/lib/gcc/i686-pc-linux-gnu/4.4.5/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/gcc/i686-pc-linux-gnu/4.4.5/libgcc_s.so.1
Reading symbols from /usr/lib/xorg/modules/extensions/libextmod.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libextmod.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/libextmod.so
Reading symbols from /usr/lib/xorg/modules/extensions/libdbe.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libdbe.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/libdbe.so
Reading symbols from /usr/lib/xorg/modules/extensions/libglx.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libglx.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/libglx.so
Reading symbols from /usr/lib/xorg/modules/extensions/librecord.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/librecord.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/librecord.so
Reading symbols from /usr/lib/xorg/modules/extensions/libdri.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libdri.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/libdri.so
Reading symbols from /usr/lib/libdrm.so.2...Reading symbols from /usr/lib/debug/usr/lib/libdrm.so.2.4.0.debug...done.
done.
Loaded symbols for /usr/lib/libdrm.so.2
Reading symbols from /usr/lib/xorg/modules/extensions/libdri2.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libdri2.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions/libdri2.so
Reading symbols from /usr/lib/xorg/modules/drivers/intel_drv.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/drivers/intel_drv.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/drivers/intel_drv.so
Reading symbols from /usr/lib/libdrm_intel.so.1...Reading symbols from /usr/lib/debug/usr/lib/libdrm_intel.so.1.0.0.debug...done.
done.
Loaded symbols for /usr/lib/libdrm_intel.so.1
Reading symbols from /usr/lib/xorg/modules/libfb.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libfb.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/libfb.so
Reading symbols from /usr/lib/dri/i965_dri.so...Reading symbols from /usr/lib/debug/usr/lib/dri/i965_dri.so.debug...done.
done.
Loaded symbols for /usr/lib/dri/i965_dri.so
Reading symbols from /usr/lib/libexpat.so.1...Reading symbols from /usr/lib/debug/usr/lib/libexpat.so.1.5.2.debug...done.
done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /usr/lib/gcc/i686-pc-linux-gnu/4.4.5/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/gcc/i686-pc-linux-gnu/4.4.5/libstdc++.so.6
Reading symbols from /usr/lib/xorg/modules/input/evdev_drv.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/input/evdev_drv.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/input/evdev_drv.so
Reading symbols from /usr/lib/xorg/modules/input/synaptics_drv.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/input/synaptics_drv.so.debug...done.
done.
Loaded symbols for /usr/lib/xorg/modules/input/synaptics_drv.so
0xb7745424 in __kernel_vsyscall ()
(gdb) c
Continuing.

Program received signal SIGPIPE, Broken pipe.
0xb7745424 in __kernel_vsyscall ()
(gdb) bt full
#0  0xb7745424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb74f9125 in writev () from /lib/libc.so.6
No locals.
#2  0x080af5cf in _XSERVTransSocketWritev (ciptr=0x9bf60c0, buf=0xbf8e2d58, size=1) at /usr/include/X11/Xtrans/Xtranssock.c:2174
No locals.
#3  0x080aed5f in _XSERVTransWritev (ciptr=0x9bf60c0, buf=0xbf8e2d58, size=1) at /usr/include/X11/Xtrans/Xtrans.c:910
No locals.
#4  0x080a681e in FlushClient (who=0x9a78450, oc=0x8301c20, __extraBuf=0x0, extraCount=0)
    at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/io.c:937
        before = <value optimized out>
        remain = <value optimized out>
        i = <value optimized out>
        len = <value optimized out>
        oco = 0x9c0c870
        connection = 23
        trans_conn = 0x9bf60c0
        iov = {{iov_base = 0x9c06ba0, iov_len = 32}, {iov_base = 0x9be20c8, iov_len = 0}, {iov_base = 0xbf8e2df8, iov_len = 134675840}}
        padBuffer = "\000\000"
        written = 0
        padsize = 0
        notWritten = 32
        todo = 32
#5  0x080a730f in FlushAllOutput () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/io.c:681
        index = <value optimized out>
        mask = 0
        oc = 0x8301c20
        client = 0xbf8e2d58
        newoutput = <value optimized out>
#6  0x080a7342 in FlushIfCriticalOutputPending () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/io.c:711
No locals.
#7  0x08071329 in Dispatch () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dispatch.c:402
        result = <value optimized out>
        client = 0x9be20c8
        nready = 0
        start_tick = 920
#8  0x080657aa in main (argc=7, argv=0xbf8e2f34, envp=0xbf8e2f54) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/main.c:291
        i = 1
        alwaysCheckForInput = {0, 1}
(gdb) c
Continuing.

Program received signal SIGTERM, Terminated.
0x08076c8a in _CallCallbacks (pcbl=0x82030d4, call_data=0xbf8e2dd4) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dixutils.c:743
743	/var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dixutils.c: No such file or directory.
	in /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dixutils.c
(gdb) bt full
#0  0x08076c8a in _CallCallbacks (pcbl=0x82030d4, call_data=0xbf8e2dd4) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dixutils.c:743
        cbr = 0x99f33d8
        pcbr = <value optimized out>
#1  CallCallbacks (pcbl=0x82030d4, call_data=0xbf8e2dd4) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dixutils.c:877
No locals.
#2  0x0806c2e2 in CloseDownClient (client=0x9baa2a8) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dispatch.c:3488
        clientinfo = {client = 0x9baa2a8, prefix = 0x0, setup = 0x0}
        really_close_down = <value optimized out>
#3  0x080714f5 in Dispatch () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/dispatch.c:442
        result = 0
        client = 0x9baa2a8
        nready = 0
        start_tick = 940
#4  0x080657aa in main (argc=7, argv=0xbf8e2f34, envp=0xbf8e2f54) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/main.c:291
        i = 1
        alwaysCheckForInput = {0, 1}
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x09c58748 in ?? ()
(gdb) bt full
#0  0x09c58748 in ?? ()
No symbol table info available.
#1  0x0809191c in FreeClientResources (client=0x82d5cb8) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/resource.c:859
        rtype = <value optimized out>
        resources = 0x82d5d88
        this = 0x0
        j = 0
#2  0x080919de in FreeAllResources () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/resource.c:876
        i = 0
#3  0x080657d6 in main (argc=7, argv=0xbf8e2f34, envp=0xbf8e2f54) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/main.c:305
        remember_it = 1
        i = <value optimized out>
        alwaysCheckForInput = {0, 1}
(gdb) c
Continuing.

Program received signal SIGABRT, Aborted.
0xb7745424 in __kernel_vsyscall ()
(gdb) bt full
#0  0xb7745424 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7441e10 in raise () from /lib/libc.so.6
No locals.
#2  0xb7598ff4 in ?? () from /lib/libc.so.6
No symbol table info available.
#3  0x080aa1ad in OsAbort () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/utils.c:1274
No locals.
#4  0x080b836d in ddxGiveUp () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/hw/xfree86/common/xf86Init.c:940
        i = <value optimized out>
#5  0x080b841c in AbortDDX () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/hw/xfree86/common/xf86Init.c:986
        i = 1
#6  0x080a7cce in AbortServer () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/log.c:424
No locals.
#7  0x080a83fe in FatalError (f=0x81d197c "Caught signal %d (%s). Server aborting\n")
    at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/log.c:552
        beenhere = 1
#8  0x080a9241 in OsSigHandler (signo=11, sip=0xbf8e2a0c, unused=0xbf8e2a8c) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/os/osinit.c:156
No locals.
#9  <signal handler called>
No symbol table info available.
#10 0x09c58748 in ?? ()
No symbol table info available.
#11 0x0809191c in FreeClientResources (client=0x82d5cb8) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/resource.c:859
        rtype = <value optimized out>
        resources = 0x82d5d88
        this = 0x0
        j = 0
#12 0x080919de in FreeAllResources () at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/resource.c:876
        i = 0
#13 0x080657d6 in main (argc=7, argv=0xbf8e2f34, envp=0xbf8e2f54) at /var/tmp/portage/x11-base/xorg-server-1.9.5/work/xorg-server-1.9.5/dix/main.c:305
        remember_it = 1
        i = <value optimized out>
        alwaysCheckForInput = {0, 1}
(gdb) c
Continuing.

Program terminated with signal SIGABRT, Aborted.
The program no longer exists.
(gdb) q
$