Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Add fine-grained LLVM CFI support to the Rust compiler #95548

Merged
merged 2 commits into from
Jul 24, 2022
Merged

Add fine-grained LLVM CFI support to the Rust compiler #95548

merged 2 commits into from
Jul 24, 2022

Commits on Jul 23, 2022

  1. Add fine-grained LLVM CFI support to the Rust compiler 

    This commit improves the LLVM Control Flow Integrity (CFI) support in
the Rust compiler by providing forward-edge control flow protection for
Rust-compiled code only by aggregating function pointers in groups
identified by their return and parameter types.

Forward-edge control flow protection for C or C++ and Rust -compiled
code "mixed binaries" (i.e., for when C or C++ and Rust -compiled code
share the same virtual address space) will be provided in later work as
part of this project by identifying C char and integer type uses at the
time types are encoded (see Type metadata in the design document in the
tracking issue rust-lang#89653).

LLVM CFI can be enabled with -Zsanitizer=cfi and requires LTO (i.e.,
-Clto).
    @rcvalle
    rcvalle committed Jul 23, 2022
    Configuration menu
    Copy the full SHA
    5ad7a64 View commit details
    Browse the repository at this point in the history

  2. Update documentation for LLVM CFI support 

    This commit updates the documentation for the LLVM Control Flow
Integrity (CFI) support in the Rust compiler (see rust-lang#95548 and rust-lang#89653).
    @rcvalle
    rcvalle committed Jul 23, 2022
    Configuration menu
    Copy the full SHA
    f792f26 View commit details
    Browse the repository at this point in the history