<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body><table border="1" cellspacing="0" cellpadding="8"> <tr> <th>Bug ID</th> <td><a class="bz_bug_link bz_status_NEW " title="NEW - Crash in nouveau_dri.so when switching apps with alt-tab in Gnome" href="https://bugs.freedesktop.org/show_bug.cgi?id=99396">99396</a> </td> </tr> <tr> <th>Summary</th> <td>Crash in nouveau_dri.so when switching apps with alt-tab in Gnome </td> </tr> <tr> <th>Product</th> <td>Mesa </td> </tr> <tr> <th>Version</th> <td>git </td> </tr> <tr> <th>Hardware</th> <td>Other </td> </tr> <tr> <th>OS</th> <td>All </td> </tr> <tr> <th>Status</th> <td>NEW </td> </tr> <tr> <th>Severity</th> <td>normal </td> </tr> <tr> <th>Priority</th> <td>medium </td> </tr> <tr> <th>Component</th> <td>Drivers/DRI/nouveau </td> </tr> <tr> <th>Assignee</th> <td>nouveau@lists.freedesktop.org </td> </tr> <tr> <th>Reporter</th> <td>afn2@cornell.edu </td> </tr> <tr> <th>QA Contact</th> <td>nouveau@lists.freedesktop.org </td> </tr></table> <p> <div> <pre>Originally filed as a bug against Gnome (<a href="https://bugzilla.gnome.org/show_bug.cgi?id=777183">https://bugzilla.gnome.org/show_bug.cgi?id=777183</a>) but they directed me here. Intermittently, gnome-shell will crash with SIGSEGV when switching apps with alt-tab. See stack trace below. Generally when this occurs, I'm running Firefox and Chromium, each with several windows open, and gnome-terminal. I'm not certain, but it seems to only happen when I mouse over the app switcher. I'm running gnome-shell 3.22.2+18+gdf7727a-1 on Arch. Please let me know what other information I can gather! I'll update the bug if I can come up with a reproducible way to trigger the crash. Jan 12 12:37:20 mbp systemd-coredump[8769]: Process 8422 (gnome-shell) of user 1000 dumped core. Stack trace of thread 8422: #0 0x00007f63b1771793 __memmove_avx_unaligned_erms (libc.so.6) #1 0x00007f639e0baf40 n/a (nouveau_dri.so) #2 0x00007f639e1cb008 n/a (nouveau_dri.so) #3 0x00007f639e1c0355 n/a (nouveau_dri.so) #4 0x00007f639e1c0537 n/a (nouveau_dri.so) #5 0x00007f639e1cc3c4 n/a (nouveau_dri.so) #6 0x00007f639df1b922 n/a (nouveau_dri.so) #7 0x00007f639ddc6690 n/a (nouveau_dri.so) #8 0x00007f639dd763b7 n/a (nouveau_dri.so) #9 0x00007f639dd7bab5 n/a (nouveau_dri.so) #10 0x00007f639dd7c900 n/a (nouveau_dri.so) #11 0x00007f639dd005e7 n/a (nouveau_dri.so) #12 0x00007f639dd013e0 n/a (nouveau_dri.so) #13 0x00007f63af0e44ed n/a (libmutter-cogl.so) #14 0x00007f63af0d5b14 n/a (libmutter-cogl.so) #15 0x00007f63af10ae56 cogl_texture_allocate (libmutter-cogl.so) #16 0x00007f63af12640b n/a (libmutter-cogl.so) #17 0x00007f63af126909 cogl_texture_new_from_bitmap (libmutter-cogl.so) #18 0x00007f63b277e143 n/a (libmutter-clutter-1.0.so) #19 0x00007f63b275a85d clutter_actor_continue_paint (libmutter-clutter-1.0.so) #20 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #21 0x00007f63b463daa0 n/a (libgnome-shell.so) #22 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #23 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #24 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #25 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #26 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #27 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #28 0x00007f63b4647f90 n/a (libgnome-shell.so) #29 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #30 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #31 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #32 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #33 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #34 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #35 0x00007f63b4656182 n/a (libgnome-shell.so) #36 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #37 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #37 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #38 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #39 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #40 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #41 0x00007f63b2760706 n/a (libmutter-clutter-1.0.so) #42 0x00007f63b463daa0 n/a (libgnome-shell.so) #43 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #44 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #45 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #46 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #47 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #48 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #49 0x00007f63b463daa0 n/a (libgnome-shell.so) #50 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #51 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #52 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #53 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #54 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #55 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #56 0x00007f63b463daa0 n/a (libgnome-shell.so) #57 0x00007f63b1f26ecf g_closure_invoke (libgobject-2.0.so.0) #58 0x00007f63b1f3937d n/a (libgobject-2.0.so.0) #59 0x00007f63b1f41bcc g_signal_emit_valist (libgobject-2.0.so.0) #60 0x00007f63b1f41faf g_signal_emit (libgobject-2.0.so.0) #61 0x00007f63b275a8a3 clutter_actor_continue_paint (libmutter-clutter-1.0.so) #62 0x00007f63b2760aab n/a (libmutter-clutter-1.0.so) #63 0x00007f63b27b347a n/a (libmutter-clutter-1.0.so) Stack trace of thread 8432: #0 0x00007f63b172848d poll (libc.so.6) #1 0x00007f63ada92ee1 n/a (libpulse.so.0) #2 0x00007f63ada846f1 pa_mainloop_poll (libpulse.so.0) #3 0x00007f63ada84d8e pa_mainloop_iterate (libpulse.so.0) #4 0x00007f63ada84e40 pa_mainloop_run (libpulse.so.0) #5 0x00007f63ada92e29 n/a (libpulse.so.0) #6 0x00007f63a31fcfe8 n/a (libpulsecommon-9.99.so) #7 0x00007f63b19ee454 start_thread (libpthread.so.0) #8 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8434: #0 0x00007f63b19f410f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f63a492d4e0 PR_WaitCondVar (libnspr4.so) #2 0x00007f63ad55cbab n/a (libmozjs-24.so) #3 0x00007f63a4932d6c n/a (libnspr4.so) #4 0x00007f63b19ee454 start_thread (libpthread.so.0) #5 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8424: #0 0x00007f63b172848d poll (libc.so.6) #1 0x00007f63b1c4e786 n/a (libglib-2.0.so.0) #2 0x00007f63b1c4e89c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f63b1c4e8e1 n/a (libglib-2.0.so.0) #4 0x00007f63b1c760d5 n/a (libglib-2.0.so.0) #5 0x00007f63b19ee454 start_thread (libpthread.so.0) #6 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8433: #0 0x00007f63b19f410f pthread_cond_wait@@GLIBC_2.3.2 (libpthread.so.0) #1 0x00007f63a492d4e0 PR_WaitCondVar (libnspr4.so) #2 0x00007f63ad4e8c0e n/a (libmozjs-24.so) #3 0x00007f63a4932d6c n/a (libnspr4.so) #4 0x00007f63b19ee454 start_thread (libpthread.so.0) #5 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8767: #0 0x00007f63b172cf19 syscall (libc.so.6) #1 0x00007f63b1c9403a g_cond_wait_until (libglib-2.0.so.0) #2 0x00007f63b1c22e89 n/a (libglib-2.0.so.0) #3 0x00007f63b1c76aa6 n/a (libglib-2.0.so.0) #4 0x00007f63b1c760d5 n/a (libglib-2.0.so.0) #5 0x00007f63b19ee454 start_thread (libpthread.so.0) #6 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8429: #0 0x00007f63b172848d poll (libc.so.6) #1 0x00007f63b1c4e786 n/a (libglib-2.0.so.0) #2 0x00007f63b1c4e89c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f639c2404bd n/a (libdconfsettings.so) #4 0x00007f63b1c760d5 n/a (libglib-2.0.so.0) #5 0x00007f63b19ee454 start_thread (libpthread.so.0) #6 0x00007f63b17317df __clone (libc.so.6) Stack trace of thread 8425: #0 0x00007f63b172848d poll (libc.so.6) #1 0x00007f63b1c4e786 n/a (libglib-2.0.so.0) #2 0x00007f63b1c4eb12 g_main_loop_run (libglib-2.0.so.0) #3 0x00007f63b2234316 n/a (libgio-2.0.so.0) #4 0x00007f63b1c760d5 n/a (libglib-2.0.so.0) #5 0x00007f63b19ee454 start_thread (libpthread.so.0) #6 0x00007f63b17317df __clone (libc.so.6)</pre> </div> </p> <hr> <span>You are receiving this mail because:</span> <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>