tequilaOS/platform_bionic
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Author SHA1 Message Date
Peter Collingbourne
b8d1348788 Handle the alternate signal stack correctly in android_unsafe_frame_pointer_chase. 
If an alternate signal stack is set and the frame record is in bounds of
that stack, we need to use the top of the alternate signal stack for bounds
checking rather than the normal stack.

Bug: 150215618
Change-Id: I78b760d61b27da44f8e0cfee3fe94a791011fe58
 2020-02-27 10:44:15 -08:00
Peter Collingbourne
5f45c18a7f Add an android_unsafe_frame_pointer_chase function. 
This function will be used by Scudo and GWP-ASan to efficiently collect
stack traces for frames built with frame pointers.

Bug: 135634846
Bug: 135772972
Change-Id: Ic63efdbafe11dfbb1226b5b4b403d53c4dbf28f3
Merged-In: Ic63efdbafe11dfbb1226b5b4b403d53c4dbf28f3
 2020-02-03 10:30:45 -08:00