[Bug 98854] New: segfault with javafx fullscreen + yakuake when compositing disabled

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98854

            Bug ID: 98854
           Summary: segfault with javafx fullscreen + yakuake when
                    compositing disabled
           Product: xorg
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: haagch at frickel.club
        QA Contact: xorg-team at lists.x.org

Found this while testing this program
https://gist.github.com/ChristophHaag/661be992429b451218e9ee1fb0eacdec
Happens on X.org 1.18 and 1.19.

Steps to reproduce:
Disable compositing
start java Jfxtest
quickly press the hotkey for opening yakuake, possibly several times
X.org will likely crash.

With debug symbols I caught this assert:

#0  0x00007ffff5cc804f in raise () at /usr/lib/libc.so.6
#1  0x00007ffff5cc947a in abort () at /usr/lib/libc.so.6
#2  0x00007ffff5cc0ea7 in __assert_fail_base () at /usr/lib/libc.so.6
#3  0x00007ffff5cc0f52 in  () at /usr/lib/libc.so.6
#4  0x000055555568a9cb in  ()
#5  0x00007ffff158d0da in amdgpu_present_vblank_handler (crtc=0x555555afa180,
msc=921668, usec=15442866662, data=0x555556c130f0) at amdgpu_present.c:132
        event = 0x555556c130f0
#6  0x00007ffff1587194 in amdgpu_drm_queue_handler (fd=13, frame=921668,
sec=15442, usec=866662, user_ptr=0x5d) at amdgpu_drm_queue.c:70
        seq = 93
        e = 0x5555569ed520
        tmp = 0x555556a3bec0
#7  0x00007ffff704d5c6 in drmHandleEvent () at /usr/lib/libdrm.so.2
#8  0x00007ffff15935f6 in drmmode_notify_fd (fd=13, notify=1,
data=0x5555559f9e78) at drmmode_display.c:2120
        drmmode = 0x5555559f9e78
#9  0x000055555570cf89 in  ()
#10 0x0000555555705c6d in WaitForSomething ()
#11 0x00005555555a56ca in  ()
#12 0x00005555555a9a48 in  ()
#13 0x00007ffff5cb5291 in __libc_start_main () at /usr/lib/libc.so.6

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