| commit | 58e253d2442ae44986f5917d833ba67a81083c39 | |
| author | Dominik Gabi <dominik@fb.com> | |
| Fri, 19 Nov 2021 21:48:12 +0000 (19 13:48 -0800) | ||
| committer | Facebook GitHub Bot <facebook-github-bot@users.noreply.github.com> | |
| Fri, 19 Nov 2021 21:49:29 +0000 (19 13:49 -0800) | ||
| tree | 597a87a41dccead3c864ad97da54aadf8eb7e6ec | treesnapshot (tar.gz zip) |
| parent | 75bbb59046b00b21baf4c0a028301a7336c96762 | commitdiff |
keep top when truncating shadow stack
Summary: Instead of truncating and blindly extending the stack on unknown operations; shift the stack to the right and left respectively. This seems to preserve more accurately tainted information (is still a workaround though).
Reviewed By: ricklavoie
Differential Revision: D32517509
fbshipit-source-id: 7e61f6e111caa778d28b0109bb56043027518543
Summary: Instead of truncating and blindly extending the stack on unknown operations; shift the stack to the right and left respectively. This seems to preserve more accurately tainted information (is still a workaround though).
Reviewed By: ricklavoie
Differential Revision: D32517509
fbshipit-source-id: 7e61f6e111caa778d28b0109bb56043027518543
| hphp/runtime/vm/taint/interpreter.cpp | diffblobblamehistory | |
| hphp/runtime/vm/taint/state.cpp | diffblobblamehistory | |
| hphp/runtime/vm/taint/state.h | diffblobblamehistory |