Public bug reported: Using Xubuntu 16.04, including light-locker, whenever the screen has been locked the X server will SIGABRT crash as soon as the user has entered their credentials. This happens 100% of the time.
The only related information I can find is a Debian bug report: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838462 I ran the crash report through gdb and it seems there is a null pointer dereference attempt for the 'device' without checking the pointer is valid. signo = 11 #6 <signal handler called> No locals. #7 libinput_device_config_tap_get_finger_count (device=0x0) at libinput.c:3075 No locals. #8 0x00007fcb5c100953 in xf86libinput_parse_tap_option (device=0x0, pInfo=0x5616b20d54e0) at ../../src/xf86libinput.c:1686 tap = <optimised out> #9 xf86libinput_parse_options (device=0x0, driver_data=0x5616b23406a0, pInfo=0x5616b20d54e0) at ../../src/xf86libinput.c:2134 options = 0x5616b2340700 #10 xf86libinput_pre_init (drv=<optimised out>, pInfo=0x5616b20d54e0, flags=<optimised out>) at ../../src/xf86libinput.c:2465 driver_data = 0x5616b23406a0 shared_device = <optimised out> libinput = <optimised out> device = 0x0 path = <optimised out> #11 0x00005616b0d0f998 in xf86NewInputDevice (pInfo=0x5616b20d54e0, pdev=pdev@entry=0x7ffce92a7c60, enable=<optimised out>) at ../../../../hw/xfree86/common/xf86Xinput.c:900 drv = 0x5616b1c9a840 dev = 0x0 paused = 0 rval = <optimised out> path = 0x5616b2092fb0 "libinput" #12 0x00005616b0d1091e in NewInputDeviceRequest (options=<optimised out>, attrs=0x5616b23a4ad0, pdev=pdev@entry=0x7ffce92a7c60) at ../../../../hw/xfree86/common/xf86Xinput.c:1049 pInfo = <optimised out> option = <optimised out> rval = <optimised out> is_auto = <optimised out> #13 0x00007fcb5c0ff5e7 in xf86libinput_hotplug_device (hotplug=0x5616b23482c0) at ../../src/xf86libinput.c:2224 dev = 0x5616b10c8a40 <LastSelectMask> #14 0x00007fcb5c0ff82c in xf86libinput_hotplug_device_cb (client=<optimised out>, closure=<optimised out>) at ../../src/xf86libinput.c:2241 hotplug = <optimised out> #15 0x00005616b0cc5c71 in ProcessWorkQueue () at ../../dix/dixutils.c:526 q = 0x5616b23a4960 p = 0x5616b10c15d8 <workQueue> #16 0x00005616b0e1c6dd in WaitForSomething (pClientsReady=pClientsReady@entry=0x5616b208caf0) at ../../os/WaitFor.c:176 i = <optimised out> waittime = {tv_sec = 0, tv_usec = 32} wt = 0x0 timeout = <optimised out> clientsReadable = {fds_bits = {0 <repeats 16 times>}} clientsWritable = {fds_bits = {0 <repeats 16 times>}} selecterr = <optimised out> nready = 0 devicesReadable = {fds_bits = {0 <repeats 16 times>}} now = <optimised out> someReady = 0 ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: xserver-xorg-core 2:1.18.4-0ubuntu0.2 Uname: Linux 4.9.0-040900rc5-lowlatency x86_64 ApportVersion: 2.20.1-0ubuntu2.4 Architecture: amd64 CrashCounter: 1 Date: Wed Jan 11 18:06:23 2017 ExecutablePath: /usr/lib/xorg/Xorg ExecutableTimestamp: 1478124781 ProcCmdline: /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch ProcCwd: / ProcEnviron: Signal: 6 SourcePackage: xorg-server StacktraceTop: libinput_device_config_tap_get_finger_count (device=0x0) at libinput.c:3075 xf86libinput_parse_tap_option (device=0x0, pInfo=0x5616b20d54e0) at ../../src/xf86libinput.c:1686 xf86libinput_parse_options (device=0x0, driver_data=0x5616b23406a0, pInfo=0x5616b20d54e0) at ../../src/xf86libinput.c:2134 xf86libinput_pre_init (drv=<optimised out>, pInfo=0x5616b20d54e0, flags=<optimised out>) at ../../src/xf86libinput.c:2465 xf86NewInputDevice (pInfo=0x5616b20d54e0, pdev=pdev@entry=0x7ffce92a7c60, enable=<optimised out>) at ../../../../hw/xfree86/common/xf86Xinput.c:900 Title: Xorg crashed with SIGABRT in libinput_device_config_tap_get_finger_count() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: ** Affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Affects: xorg-server (Debian) Importance: Unknown Status: Unknown ** Tags: amd64 apport-crash need-amd64-retrace third-party-packages xenial ** Information type changed from Private to Public ** Bug watch added: Debian Bug tracker #838462 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838462 ** Also affects: xorg-server (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838462 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1655752 Title: Xorg crashed with SIGABRT in libinput_device_config_tap_get_finger_count() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1655752/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
