Bug 72808

Summary:	SIGSEGV in Weston when unfullscreening clients
Product:	Wayland	Reporter:	U. Artie Eoff <ullysses.a.eoff>
Component:	weston	Assignee:	Wayland bug list <wayland-bugs>
Status:	VERIFIED FIXED	QA Contact:
Severity:	blocker
Priority:	high
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	weston sigsegv gdb backtrace

Description U. Artie Eoff 2013-12-17 20:15:26 UTC

Created attachment 90897 [details]
weston sigsegv gdb backtrace

Weston segfaults in weston_view_unmap when unfullscreening client applications.  See attached gdb backtrace.  This regression was caught with wayland-fits efl/egl/WindowFullscreenTest, but can be reproduced manually with weston-terminal:

1. Launch weston-terminal
2. Fullscreen the weston-terminal with <F11>
3. Unfullscreen the weston-terminal with <F11>
4. Observe segfault

Tested on:

wayland (master) 1.3.91-0-g01bde63
drm (master) libdrm-2.4.50-0-g4c5de72
mesa (10.0) heads/10.0-0-g6f7da01
libva (master) libva-1.2.1-0-g88ed1eb
intel-driver (master) 1.2.1-0-g8f306e3
weston (master) heads/master-0-ge22f3bb
efl (efl-1.8) heads/efl-1.8-0-g3b57d1f
elementary (elementary-1.8) heads/elementary-1.8-0-gcf89ada
wayland-fits (master) heads/master-0-gcd75d94

and

wayland (master) 1.3.91-0-g01bde63
drm (master) heads/master-0-g068ea68
mesa (master) heads/master-0-g188630d
libva (master) heads/master-0-g73a11b3
intel-driver (master) 1.2.2-0-g121e70d
weston (master) 1.3.91-0-gfccb57d
efl (master) heads/master-0-g0947bae
elementary (master) heads/master-0-gde76b3c
wayland-fits (master) heads/master-0-gcd75d94

Comment 1 U. Artie Eoff 2013-12-17 20:23:12 UTC

Multiple weston check tests also fail intermittently due to the same sigsegv backtrace.

Comment 2 Kristian Høgsberg 2013-12-17 22:58:37 UTC

commit df42a80ea2ac7ce837d0d058ceb96964ba6e471d
Author: Kristian Høgsberg <krh@bitplanet.net>
Date:   Tue Dec 17 14:58:19 2013 -0800

    compositor: Initialize output listener links
    
    Make sure the links are initialized so we can safely remove the listeners
    in weston_view_unmap().
    
    https://bugs.freedesktop.org/show_bug.cgi?id=72808

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