Bug#752157: gdm-session-worker segfaults after entering the password

Marco d'Itri md at linux.it
Fri Jun 20 04:17:37 UTC 2014


Package: gdm3
Version: 3.8.4-9
Severity: important

This started after an upgrade in the last ~2 months.

If I attach a debugger I get this:

Program received signal SIGSEGV, Segmentation fault.
_int_malloc (av=av at entry=0xf7299420 <main_arena>, bytes=bytes at entry=100) at malloc.c:3489
3489	malloc.c: File o directory non esistente.
(gdb) where
#0  _int_malloc (av=av at entry=0xf7299420 <main_arena>, bytes=bytes at entry=100) at malloc.c:3489
#1  0xf7168521 in __GI___libc_malloc (bytes=bytes at entry=100) at malloc.c:2891
#2  0xf71eae91 in __GI___vasprintf_chk (result_ptr=0xffdc6e3c, flags=1, format=0x806e7a8 "GdmSessionWorker: trying to get updated username", args=0xffdc6f1c "Lo\334\377") at vasprintf_chk.c:48
#3  0xf73e1aba in g_vasprintf () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xf73bb323 in g_strdup_vprintf () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xf73a42df in g_logv () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xf73a4673 in g_log () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x08055d43 in ?? ()
#8  0xf7663927 in pam_vprompt () from /lib/i386-linux-gnu/libpam.so.0
#9  0xf7663adb in pam_prompt () from /lib/i386-linux-gnu/libpam.so.0
#10 0xf5de9f6a in ?? () from /lib/i386-linux-gnu/security/pam_unix.so
#11 0xf5de7342 in pam_sm_authenticate () from /lib/i386-linux-gnu/security/pam_unix.so
#12 0xf765e6ef in ?? () from /lib/i386-linux-gnu/libpam.so.0
#13 0xf765ddba in pam_authenticate () from /lib/i386-linux-gnu/libpam.so.0
#14 0x08056377 in ?? ()
#15 0xf7399d80 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#16 0xf739d1d7 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#17 0xf739d598 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#18 0xf739d89b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#19 0x0804d922 in ?? ()
#20 0xf710ba63 in __libc_start_main (main=0x804d770, argc=1, argv=0xffdc73b4, init=0x806c3c0, fini=0x806c430, rtld_fini=0xf77e3cd0 <_dl_fini>, stack_end=0xffdc73ac) at libc-start.c:287
#21 0x0804d9ae in ?? ()

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 3.14-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gdm3 depends on:
ii  accountsservice                              0.6.37-1
ii  adduser                                      3.113+nmu3
ii  dconf-cli                                    0.20.0-2
ii  dconf-gsettings-backend                      0.20.0-2
ii  debconf [debconf-2.0]                        1.5.53
ii  fvwm [x-window-manager]                      1:2.6.5.ds-3
ii  gir1.2-gdm3                                  3.8.4-9
ii  gnome-session [x-session-manager]            3.8.4-4
ii  gnome-session-bin                            3.8.4-4
ii  gnome-session-flashback [x-session-manager]  3.8.0-3
ii  gnome-settings-daemon                        3.8.5-2+b2
ii  gnome-shell                                  3.8.4-8.1
ii  gnome-terminal [x-terminal-emulator]         3.12.2-3
ii  gsettings-desktop-schemas                    3.8.2-2
ii  libaccountsservice0                          0.6.37-1
ii  libatk1.0-0                                  2.12.0-1
ii  libaudit1                                    1:2.3.6-1
ii  libc6                                        2.19-3
ii  libcairo-gobject2                            1.12.16-2
ii  libcairo2                                    1.12.16-2
ii  libcanberra-gtk3-0                           0.30-2
ii  libcanberra0                                 0.30-2
ii  libgdk-pixbuf2.0-0                           2.30.7-1
ii  libgdm1                                      3.8.4-9
ii  libglib2.0-0                                 2.40.0-3
ii  libglib2.0-bin                               2.40.0-3
ii  libgtk-3-0                                   3.12.2-1+b1
ii  libpam-modules                               1.1.8-3
ii  libpam-runtime                               1.1.8-3
ii  libpam-systemd                               208-1
ii  libpam0g                                     1.1.8-3
ii  libpango-1.0-0                               1.36.3-1
ii  libpangocairo-1.0-0                          1.36.3-1
ii  librsvg2-common                              2.40.0-1
ii  libselinux1                                  2.3-1
ii  libsystemd-daemon0                           208-1
ii  libsystemd-id128-0                           204-10
ii  libsystemd-journal0                          208-1
ii  libsystemd-login0                            208-1
ii  libwrap0                                     7.6.q-25
ii  libx11-6                                     2:1.6.2-2
ii  libxau6                                      1:1.0.8-1
ii  libxdmcp6                                    1:1.1.1-1
ii  libxrandr2                                   2:1.4.2-1
ii  lsb-base                                     4.1+Debian13
ii  metacity [x-window-manager]                  1:2.34.13-1
ii  policykit-1                                  0.105-6
ii  roxterm-gtk3 [x-terminal-emulator]           2.8.2-1
ii  rxvt-unicode [x-terminal-emulator]           9.19-1
ii  upower                                       0.9.23-2+b2
ii  x11-common                                   1:7.7+7
ii  x11-xserver-utils                            7.7+2
ii  xterm [x-terminal-emulator]                  306-1

Versions of packages gdm3 recommends:
ii  at-spi2-core               2.9.5-1
ii  desktop-base               7.0.3
ii  gnome-icon-theme           3.12.0-1
ii  gnome-icon-theme-symbolic  3.12.0-1
ii  x11-xkb-utils              7.7+1
pn  xserver-xephyr             <none>
ii  xserver-xorg               1:7.7+7
ii  zenity                     3.12.1-1

Versions of packages gdm3 suggests:
pn  gnome-orca            <none>
ii  libpam-gnome-keyring  3.12.0-2

-- debconf information:
* shared/default-x-display-manager: gdm3
  gdm3/daemon_name: /usr/sbin/gdm3

-- 
ciao,
Marco
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