I can still produce this bug on Debian stable. It requires me to run a process that does a lot of random io in a a large file, such that some swap is consumed.
I also had an instance of X crashing as a result: [ 84441.029] BUG: triggered 'if (priv->num_active_touches > priv->num_slots)' [ 84441.029] BUG: ../../src/synaptics.c:3122 in UpdateTouchState() [ 84441.029] [ 84441.029] Backtrace: [ 84441.029] 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f9db58fbd16] [ 84441.029] 1: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x3067) [0x7f9dafb4b067] [ 84441.029] 2: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x4733) [0x7f9dafb4c733] [ 84441.029] 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x7164) [0x7f9dafb4f164] [ 84441.029] 4: /usr/bin/X (0x7f9db577d000+0x8d947) [0x7f9db580a947] [ 84441.029] 5: /usr/bin/X (0x7f9db577d000+0xb1c18) [0x7f9db582ec18] [ 84441.029] 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f9db4aa5000+0xf0a0) [0x7f9db4ab40a0] [ 84441.029] 7: /lib/x86_64-linux-gnu/libc.so.6 (__select+0x13) [0x7f9db3881293] [ 84441.029] 8: /usr/bin/X (WaitForSomething+0x190) [0x7f9db58f9150] [ 84441.029] 9: /usr/bin/X (0x7f9db577d000+0x52bb1) [0x7f9db57cfbb1] [ 84441.029] 10: /usr/bin/X (0x7f9db577d000+0x41ec5) [0x7f9db57beec5] [ 84441.029] 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xfd) [0x7f9db37c9ead] [ 84441.029] 12: /usr/bin/X (0x7f9db577d000+0x4219d) [0x7f9db57bf19d] [ 84441.029] [ 84441.115] BUG: triggered 'if (priv->num_active_touches > priv->num_slots)' [ 84441.115] BUG: ../../src/synaptics.c:3122 in UpdateTouchState() [ 84441.115] [ 84441.115] Backtrace: [ 84441.115] 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f9db58fbd16] [ 84441.115] 1: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x3067) [0x7f9dafb4b067] [ 84441.115] 2: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x4733) [0x7f9dafb4c733] [ 84441.115] 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x7164) [0x7f9dafb4f164] [ 84441.115] 4: /usr/bin/X (0x7f9db577d000+0x8d947) [0x7f9db580a947] [ 84441.115] 5: /usr/bin/X (0x7f9db577d000+0xb1c18) [0x7f9db582ec18] [ 84441.115] 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f9db4aa5000+0xf0a0) [0x7f9db4ab40a0] [ 84441.115] 7: /lib/x86_64-linux-gnu/libc.so.6 (__select+0x13) [0x7f9db3881293] [ 84441.115] 8: /usr/bin/X (WaitForSomething+0x190) [0x7f9db58f9150] [ 84441.115] 9: /usr/bin/X (0x7f9db577d000+0x52bb1) [0x7f9db57cfbb1] [ 84441.115] 10: /usr/bin/X (0x7f9db577d000+0x41ec5) [0x7f9db57beec5] [ 84441.115] 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xfd) [0x7f9db37c9ead] [ 84441.115] 12: /usr/bin/X (0x7f9db577d000+0x4219d) [0x7f9db57bf19d] [ 84441.115] [ 84442.200] BUG: triggered 'if (priv->num_active_touches > priv->num_slots)' [ 84442.200] BUG: ../../src/synaptics.c:3122 in UpdateTouchState() [ 84442.200] [ 84442.200] Backtrace: [ 84442.200] 0: /usr/bin/X (xorg_backtrace+0x36) [0x7f9db58fbd16] [ 84442.200] 1: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x3067) [0x7f9dafb4b067] [ 84442.200] 2: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x4733) [0x7f9dafb4c733] [ 84442.200] 3: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7f9dafb48000+0x7164) [0x7f9dafb4f164] [ 84442.200] 4: /usr/bin/X (0x7f9db577d000+0x8d947) [0x7f9db580a947] [ 84442.200] 5: /usr/bin/X (0x7f9db577d000+0xb1c18) [0x7f9db582ec18] [ 84442.200] -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/956071 Title: Xorg crashed with SIGSEGV in XIGetDeviceProperty() To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/956071/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
