Created attachment 8360518 [details] stack Spawned off from bug 921622 comment 24 / 25. When I run this in my Linux64 ASAN build it crashes quite quickly: ./mach mochitest-plain --debugger=gdb --repeat=1000 content/media/test/test_playback_rate.html It might be the same underlying problem as bug 950390, but in this case the address is not near zero as it is in that bug. Marking dependent for now.
This is almost certainly this ASan bug present in Clang 3.3: https://code.google.com/p/address-sanitizer/issues/detail?id=193 You can either work around it by defining ASAN_OPTIONS=check_malloc_usable_size=0 in your environment, or you can try building with Clang 3.4 instead, where it is supposed to be fixed. Please needinfo' me rather than assign to me or if you really think I should work on something, needinfo Milan ;-)
Assignee: bjacob → nobody
Note: this is mentioned on this wiki page: https://intranet.mozilla.org/User:Bjacob@mozilla.com/Gfx_IPC_fuzzing
I can confirm I was using Clang 3.3 at the time and I can't reproduce it using clang 3.4, so the cited clang bug seems very likely to be the cause.
Status: NEW → RESOLVED
Last Resolved: 5 years ago
Resolution: --- → INVALID
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