[Bug 1677058] Re: /usr/sbin/lightdm-gtk-greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb
This error hasn't been seen since 18.10. Closing out. ** Changed in: lightdm-gtk-greeter (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1677058 Title: /usr/sbin/lightdm-gtk- greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1677058/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1677058] Re: /usr/sbin/lightdm-gtk-greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb
I hit "post" a bit too soon. Here is the backtrace from the core dump: (gdb) bt #0 0x7fc94980f330 in cairo_surface_get_type () from /usr/lib64/libcairo.so.2 #1 0x00413893 in greeter_background_save_xroot () #2 0x0040e07a in ?? () #3 0x7fc948fa20d4 in ?? () from /usr/lib64/libgobject-2.0.so.0 #4 0x7fc948fbc5a7 in g_signal_emit_valist () from /usr/lib64/libgobject-2.0.so.0 #5 0x7fc948fbcf1f in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0 #6 0x7fc948a6ab31 in ?? () from /usr/lib64/liblightdm-gobject-1.so.0 #7 0x7fc948a6aeed in ?? () from /usr/lib64/liblightdm-gobject-1.so.0 #8 0x7fc948cc84dd in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #9 0x7fc948cc88b0 in ?? () from /usr/lib64/libglib-2.0.so.0 #10 0x7fc948cc8bd2 in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0 #11 0x7fc949fb4645 in gtk_main () from /usr/lib64/libgtk-3.so.0 #12 0x0040c463 in main () (gdb) I cannot compare this to the error report, but "greeter_background_save_xroot" and "cairo_surface_get_type" from the title of this bug ring a bell. Here are some other similar bugs I found while searching for existing reports: https://bugzilla.redhat.com/show_bug.cgi?id=1478720 https://bugzilla.redhat.com/show_bug.cgi?id=1468864 https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1422794 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1677058 Title: /usr/sbin/lightdm-gtk- greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1677058/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1677058] Re: /usr/sbin/lightdm-gtk-greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb
I see this with lightdm-gtk-greeter 2.0.3 on Gentoo. It appears that
this crash happens when the hostname changes between lightdm start and
login.
My system's hostname defaults to "localhost", but I set proper hostnames
via dhcp (the Linux installation boots on multiple computers). Network
setup is handled by networkmanager. It seems that the IP setup happens
somewhen between lightdm starting and the greeter screen appearing.
Not connecting the network (so the hostname stays as "localhost") or
setting the hostname earlier via the kernel's ip=dhcp boot argument
works around the bug.
Here is an excerpt from strace:
connect(11, {sa_family=AF_UNIX, sun_path=@"/tmp/.X11-unix/X0"}, 20) = 0
getpeername(11, {sa_family=AF_UNIX, sun_path=@"/tmp/.X11-unix/X0"}, [124->20])
= 0
uname({sysname="Linux", nodename="ripper", ...}) = 0
access("/root/.Xauthority", R_OK) = 0
open("/root/.Xauthority", O_RDONLY) = 12
fstat(12, {st_mode=S_IFREG|0600, st_size=54, ...}) = 0
read(12, "\1\0\0\tlocalhost\0\0010\0\22MIT-MAGIC-COOK"..., 4096) = 54
read(12, "", 4096) = 0
close(12) = 0
fcntl(11, F_GETFL) = 0x2 (flags O_RDWR)
fcntl(11, F_SETFL, O_RDWR|O_NONBLOCK) = 0
fcntl(11, F_SETFD, FD_CLOEXEC) = 0
poll([{fd=11, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=11, revents=POLLOUT}])
writev(11, [{iov_base="l\0\v\0\0\0\0\0\0\0\0\0", iov_len=12}, {iov_base="",
iov_len=0}], 2) = 12
recvfrom(11, 0x1047e80, 8, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=11, events=POLLIN}], 1, -1) = 1 ([{fd=11, revents=POLLIN|POLLHUP}])
recvfrom(11, "\0\26\v\0\0\0\6\0", 8, 0, NULL, NULL) = 8
recvfrom(11, "No protocol specified\n\0\0", 24, 0, NULL, NULL) = 24
write(2, "No protocol specified\n", 22) = 22
shutdown(11, SHUT_RDWR) = 0
close(11) = 0
ioctl(2, TCGETS, 0x7ffe4bc60930)= -1 ENOTTY (Inappropriate ioctl for
device)
getpid()= 3418
write(2, "\n** (lightdm-gtk-greeter:3418): "..., 86) = 86
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x10} ---
I have attached the greeter log. I do not wish to attach the full strace
log because it will probably contain my password in one way or another.
** Attachment added: "logfile"
https://bugs.launchpad.net/ubuntu/+source/lightdm-gtk-greeter/+bug/1677058/+attachment/5024563/+files/seat0-greeter.log.old
** Bug watch added: Red Hat Bugzilla #1478720
https://bugzilla.redhat.com/show_bug.cgi?id=1478720
** Bug watch added: Red Hat Bugzilla #1468864
https://bugzilla.redhat.com/show_bug.cgi?id=1468864
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https://bugs.launchpad.net/bugs/1677058
Title:
/usr/sbin/lightdm-gtk-
greeter:11:cairo_surface_get_type:set_surface_as_root:greeter_background_save_xroot:start_session:user_combo_key_press_cb
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