Bug 68896

Summary:	Weston and TTY's hang when weston-launch is SIGKILL'd and weston is SIGTERM'd
Product:	Wayland	Reporter:	U. Artie Eoff <ullysses.a.eoff>
Component:	weston	Assignee:	Wayland bug list <wayland-bugs>
Status:	VERIFIED FIXED	QA Contact:
Severity:	critical
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:
Attachments:	Weston hangs in drm_destroy

Description U. Artie Eoff 2013-09-03 16:49:25 UTC

Bug 62910 addressed weston-launch issues with all signals except SIGKILL.  Some of the SIGKILL woes were discussed in https://bugs.freedesktop.org/show_bug.cgi?id=62910#c1.

Killing weston-launch with SIGKILL still hangs the ttys and is an issue that still needs addressed eventually.

Comment 1 U. Artie Eoff 2013-09-03 18:24:54 UTC

Clarification:

If weston-launch is SIGKILL'd, then the Weston process continues to run.  However, when attempting to SIGTERM Weston afterwards, the TTY's hang and Weston does not exit.  A gdb backtrace indicates that Weston is stuck in drm_destroy().

$ weston-launch &
$ killall -SIGKILL weston-launch
$ killall -SIGTERM weston
# observe that "sudo chvt 1" blocks and that weston never exits.  weston-desktop-shell is also <defunct>.

Comment 2 U. Artie Eoff 2013-09-03 18:25:50 UTC

Created attachment 85138 [details]
Weston hangs in drm_destroy

Comment 3 Brian Lovin 2013-09-23 23:18:49 UTC

Tested this on the 1.3RC:
Fedora 19
wayland (HEAD) 1.2.91-0-g4125367
drm (HEAD) libdrm-2.4.46-0-gc6d73cf
mesa (9.2) heads/9.2-0-g2cda3f0
weston (HEAD) 1.2.91-0-g7799385


This issue has been fixed. Weston-launch can be SIGKILL'd and will quit gracefully and Weston will now also quit.

Comment 4 Brian Lovin 2013-09-23 23:19:18 UTC

Verified from previous comment.

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