[app_server] crash in WindowLayer::Frontmost()

[diver]

This was while playing around desktop icons (renaming, Get info, etc). Dunno how to reproduce it yet. Screenshot will follow. Tested with rev16455 under wmvare.

[diver]

debug shot

[marcusoverhagen]

Changing the severity to "blocker" as this problem crashes the whole system.

[marcusoverhagen]

Probably fixing #266 will also fix this problem, as crash is both times in WindowLaxer::Frontmost()

[marcusoverhagen]

should be fixed now

[diver]

Happens again, see attachment 322 in #266 Reopening...

[diver]

Ok, some more information, to speed up this crash press Be Menu-Preferences Select all prefs and start them at once, while they loading switch workspaces (alt+f1, alt+f2) and press team window to select them (as described in #757)

[diver]

(In reply to comment #6) Well, now i just dead lock app_server this way, so it seems that this bug would be more easy to reproduce after #757 will be fixed ;-)

[wkornewald]

typo

[diver]

OK, bug #757 is fixed and i can reproduce this bug again now, cool ;-)

[axeld]

I tried a number of times, but I can't reproduce it over here using the technique that triggered bug #757. Are you doing anything differently here?

[diver]

It seems that now you have to open more apps to crash app_server. Try opening /boot/beos/apps at once and while they are loading start to switch workspaces and clicking team menu.

[stippi]

Is this one still reproducable?

[stippi]

Oh, yeah it is. Sorry for spamming.

[stippi]

I have been working on this bug by changing the locking a bit in app_server. The weird thing is that this crashing bug does not happen in the test_environment. Try running all sorts of apps, including stress_test which opens windows like crazy and then switching workspaces works fine. At least after I fixed a couple of deadlocks which were more easily provoked with my locking changes. When I try this on Haiku though, most apps will hang and not open any window anymore, so I must have messed something up. I will try again with the recent fixes to the kernel and post my results here.

[axeld]

Fixed in r22549.