[Webkit-unassigned] [Bug 138867] New: Missing NULL-check in VideoTrack::setLanguage

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138867

            Bug ID: 138867
           Summary: Missing NULL-check in VideoTrack::setLanguage
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pnormand at igalia.com

Here media/track/track-in-band-duplicate-tracks-when-source-changes.html crashes:

#0  0x00007f0ccdfc220b in WebCore::HTMLMediaElement::videoTracks() () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
(gdb) bt
#0  0x00007f0ccdfc220b in WebCore::HTMLMediaElement::videoTracks() () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#1  0x00007f0cce80eabc in WebCore::VideoTrack::setLanguage(WTF::AtomicString const&) () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#2  0x00007f0cce87e929 in WebCore::TrackPrivateBaseGStreamer::notifyTrackOfTagsChanged() () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#3  0x00007f0cceecf5fd in WTF::GThreadSafeMainLoopSource::voidCallback() () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#4  0x00007f0ccbc6ce1a in WTF::GMainLoopSource::voidSourceCallback(WTF::GMainLoopSource*) () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#5  0x00007f0cc93127ed in g_main_dispatch (context=0x10ff820) at gmain.c:3064
#6  g_main_context_dispatch (context=context at entry=0x10ff820) at gmain.c:3663
#7  0x00007f0cc9312b88 in g_main_context_iterate (context=0x10ff820, block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3734
#8  0x00007f0cc9312ea2 in g_main_loop_run (loop=0x16a0130) at gmain.c:3928
#9  0x00007f0ccdb07771 in WebProcessMainUnix () from /home/phil/dev/WebKit/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#10 0x00007f0ccbfbdb45 in __libc_start_main (main=0x400730 <main>, argc=2, argv=0x7fffbed03068, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffbed03058)
    at libc-start.c:287
#11 0x0000000000400784 in _start ()

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