You have been subscribed to a public bug: ==32480== Invalid read of size 4 ==32480== at 0xA22E394: sna_dri_create_buffer (sna_dri.c:252) ==32480== by 0x27BF7A: allocate_or_reuse_buffer.isra.6 (dri2.c:448) ==32480== by 0x27CCE6: do_get_buffers (dri2.c:573) ==32480== by 0x27D11F: DRI2GetBuffersWithFormat (dri2.c:690) ==32480== by 0x27EAFF: ProcDRI2Dispatch (dri2ext.c:306) ==32480== by 0x15CFCD: Dispatch (dispatch.c:432) ==32480== by 0x14C529: main (main.c:298) ==32480== Address 0xb98d18c is 12 bytes inside a block of size 120 free'd ==32480== at 0x4C2B60C: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==32480== by 0xA19FC6D: sna_destroy_pixmap.part.69 (sna_accel.c:1393) ==32480== by 0xA19FCBE: sna_destroy_pixmap (sna_accel.c:1347) ==32480== by 0x234DC0: damageDestroyPixmap (damage.c:1559) ==32480== by 0x1F7B68: XvDestroyPixmap (xvmain.c:372) ==32480== by 0x1F66BE: ShmDestroyPixmap (shm.c:273) ==32480== by 0x86987D5: xmir_resize (xmir-output.c:453) ==32480== by 0x1DA7D6: xf86RandR12ScreenSetSize (xf86RandR12.c:699) ==32480== by 0x22231A: ProcRRSetScreenSize (rrscreen.c:286) ==32480== by 0x15CFCD: Dispatch (dispatch.c:432) ==32480== by 0x14C529: main (main.c:298)
** Affects: xorg-server (Ubuntu) Importance: Critical Assignee: Chris Halse Rogers (raof) Status: Triaged ** Tags: make-xmir-default -- xmir_resize() releases a pixmap it does not own, leading to freed memory reads https://bugs.launchpad.net/bugs/1221616 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs