Public bug reported:
We have observed a situation where several GNOME programs appear to
segfault in quick succession, causing several instances of gnome_segv
and bug-buddy to be launched. One of these is directed back at gnome-
session itself.
When this happens, gnome-session stops responding to new client
connections, so applications fail to start. strace shows gnome-session
blocked in waitpid(2) waiting for the gnome_segv process for itself.
1000 4386 0.0 1.1 20980 10684 ? Ss 11:26 0:00
x-session-manager
1000 4421 0.0 0.0 4488 732 ? Ss 11:26 0:00 \_
/usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session x-session-manager
1000 15113 0.0 0.6 17944 6144 ? S 17:29 0:00 \_
/usr/lib/libgnomeui-0/gnome_segv gnome-session 11 2.16.1
1000 15116 0.0 0.0 1660 472 ? S 17:29 0:00 \_ sh -c
/usr/bin/bug-buddy --appname="gnome-session" --pid=4386 --package-ver="(null)"
1000 15117 0.0 0.6 22028 6312 ? S 17:29 0:00 \_
/usr/bin/bug-buddy --appname=gnome-session --pid=4386 --package-ver=(null)
[...]
1000 4487 0.0 0.8 50452 7412 ? Ss 11:26 0:00
gnome-power-manager
1000 15110 0.0 0.6 17944 6152 ? S 17:29 0:00 \_
/usr/lib/libgnomeui-0/gnome_segv gnome-power-manager 11 2.16.1
1000 15120 0.0 0.0 1660 476 ? S 17:29 0:00 \_ sh -c
/usr/bin/bug-buddy --appname="gnome-power-manager" --pid=4487
--package-ver="(null)"
1000 15121 0.0 0.6 22024 6312 ? S 17:29 0:00 \_
/usr/bin/bug-buddy --appname=gnome-power-manager --pid=4487 --package-ver=(null)
[...]
1000 4478 0.0 1.0 59008 9932 ? Ssl 11:26 0:00
/usr/lib/evolution/2.8/evolution-alarm-notify
1000 15109 0.0 0.6 17948 6148 ? S 17:29 0:00 \_
/usr/lib/libgnomeui-0/gnome_segv evolution-alarm-notify 11 2.8.1
1000 15122 0.0 0.0 1664 468 ? S 17:29 0:00 \_ sh -c
/usr/bin/bug-buddy --appname="evolution-alarm-notify" --pid=4478
--package-ver="(null)"
1000 15123 0.0 0.6 22028 6308 ? S 17:29 0:00 \_
/usr/bin/bug-buddy --appname=evolution-alarm-notify --pid=4478
--package-ver=(null)
[...]
1000 4472 0.0 1.2 52428 11732 ? Ss 11:26 0:00 update-notifier
1000 15111 0.0 0.6 17948 6156 ? S 17:29 0:00 \_
/usr/lib/libgnomeui-0/gnome_segv update-notifier 11
1000 15114 0.0 0.0 1664 472 ? S 17:29 0:00 \_ sh -c
/usr/bin/bug-buddy --appname="update-notifier" --pid=4472
--package-ver="(null)"
1000 15115 0.0 0.6 22028 6308 ? S 17:29 0:00 \_
/usr/bin/bug-buddy --appname=update-notifier --pid=4472 --package-ver=(null)
[...]
1000 4463 0.0 0.6 18256 5432 ? Ss 11:26 0:00
gnome-volume-manager --sm-client-id default4
1000 15112 0.0 0.6 17948 6156 ? S 17:29 0:00 \_
/usr/lib/libgnomeui-0/gnome_segv gnome-volume-manager 11 2.15.0
1000 15118 0.0 0.0 1660 476 ? S 17:29 0:00 \_ sh -c
/usr/bin/bug-buddy --appname="gnome-volume-manager" --pid=4463
--package-ver="(null)"
1000 15119 0.0 0.6 22028 6308 ? S 17:29 0:00 \_
/usr/bin/bug-buddy --appname=gnome-volume-manager --pid=4463
--package-ver=(null)
$ strace -p 4386 # x-session-manager (gnome-session)
Process 4386 attached - interrupt to quit
waitpid(15113, <unfinished ...>
$ strace <anything which attempts to connect to the session manager>
[...]
socket(PF_FILE, SOCK_STREAM, 0) = 10
uname({sys="Linux", node="christina-laptop", ...}) = 0
connect(10, {sa_family=AF_FILE, path="/tmp/.ICE-unix/4386"}, 21) = 0
fcntl64(10, F_SETFD, FD_CLOEXEC) = 0
write(10, "\0\1\0\0\0\0\0\0", 8) = 8
read(10, <unfinished ...> # hangs here indefinitely
No bug-buddy window is visible on the desktop.
No stack traces can be obtained from the processes which apparently
segfaulted ("Failed to read a valid object file image from memory."),
though this may be specific to one system and has not been confirmed.
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
--
Mysterious segfault of many GNOME programs makes gnome-session unresponsive
https://launchpad.net/bugs/74682
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