Done. There doesn't appear to be any way that Mir itself can screw up that call.
It's possible qtmir might be messing up with an incorrect 'this' pointer to the Mir DisplayBuffer. But I think much more likely that it's a nouveau driver bug. If it wasn't then we'd be seeing similar crashes with intel and radeon, but we don't. ** Changed in: libdrm (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to libdrm in Ubuntu. https://bugs.launchpad.net/bugs/1553328 Title: unity8 crashed with SIGSEGV on nouveau, in eglMakeCurrent() ... nv50_flush() ... pushbuf_kref() Status in Mir: Invalid Status in libdrm package in Ubuntu: New Status in mir package in Ubuntu: Invalid Status in qtmir package in Ubuntu: Incomplete Bug description: Unit8 froze up while I was trying to open system settings. ProblemType: Crash DistroRelease: Ubuntu 16.04 Package: unity8 8.11+16.04.20160216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.4.0-9.24-generic 4.4.3 Uname: Linux 4.4.0-9-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 Date: Fri Mar 4 19:12:54 2016 ExecutablePath: /usr/bin/unity8 InstallationDate: Installed on 2015-05-10 (299 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) ProcCmdline: unity8 SegvAnalysis: Segfault happened at: 0x7f58d568706c: mov 0x8(%rsi),%edx PC (0x7f58d568706c) ok source "0x8(%rsi)" (0x00000008) not located in a known VMA region (needed readable region)! destination "%edx" ok Stack memory exhausted (SP below stack segment) SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity8 StacktraceTop: ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2 ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so ?? () from /usr/lib/x86_64-linux-gnu/mesa-egl/libEGL.so.1 Title: unity8 crashed with SIGSEGV UpgradeStatus: Upgraded to xenial on 2015-11-07 (118 days ago) UserGroups: adm autopilot cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1553328/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
