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platform_system_core/debuggerd/handler
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Peter Collingbourne f03af8844a Read fault address on arm64 using proposed kernel API. 
On aarch64, the top 8 bits of the address (i.e. the tag bits) of
the fault address in si_addr are always clear. This isn't ideal for
MTE which will require these bits in order to correctly diagnose
tag mismatches.

A proposed kernel patch [1] exposes the full fault address including
the tag bits as part of the ucontext. Change debuggerd to read this
fault address if available.

[1] https://patchwork.kernel.org/patch/11435077/

Bug: 135772972
Change-Id: Ia05be574113860f4e9ecc36a310c4b740e0c4afb
2020-03-27 20:00:06 -07:00
..
debuggerd_fallback.cpp debuggerd: switch to using platform headers for DEBUGGER_SIGNAL. 2019-12-17 16:36:05 -08:00
debuggerd_fallback_nop.cpp debuggerd_handler: implement missing fallback functionality. 2017-03-09 11:26:05 -08:00
debuggerd_handler.cpp Read fault address on arm64 using proposed kernel API. 2020-03-27 20:00:06 -07:00
fallback.h Fix multithreaded backtraces for seccomp processes. 2018-09-12 18:12:13 -07:00