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| author | 2023-01-27 11:38:55 -0800 | |
|---|---|---|
| committer | 2023-01-31 20:20:29 +0000 | |
| commit | d04ed700190056ecd367ee41e6b7f3b87dc7f901 (patch) | |
| tree | a02f40a3ca163491adf5685d63a3fd293c7dbf1c /runtime/monitor_linux.cc | |
| parent | ef0b1544519f91fc5663b06d433da474115feb5a (diff) | |
Call the debuggerd first chance handler in sigchain for recoverable GWP-ASan
Recoverable GWP-ASan is a new feature in Android U that allows GWP-ASan
to detect use-after-free and heap-buffer-overflow (like it currently
does), and for a bug report to be printed, but *now* the app that
contained the bug won't crash.
This may allow us to deploy GWP-ASan as an opt-out feature, rather than
an opt-in feature as it currently is. Previously, AppCompat meant that
we couldn't have opt-in GWP-ASan, because an OS upgrade could now cause
"working before" (just with silent memory corruption) apps to suddenly
crash.
Bug: 247012630
Test: Patch an OS build with aosp/2394588, then use `setprop
libc.debug.gwp_asan.recoverable.com.sanitizers.app.none true` (where
com.sanitizers.app.none is an app that can trigger a use-after-free) to
enable recoverable GWP-ASan. Then, trigger the use-after-free, and make
sure that the sigchain handler calls the debuggerd handler first,
returning from sigchain.
Change-Id: I01ff2ad6bf16cbebec4e86156d5a0357b1f98e59
Diffstat (limited to 'runtime/monitor_linux.cc')
0 files changed, 0 insertions, 0 deletions