• Clemens Backes's avatar
    [wasm] Add unit tests for code protection · c9704cf7
    Clemens Backes authored
    This adds some basic tests for WebAssembly code protection, in four
    different configurations:
    - no protection
    - mprotect-based protection
    - PKU-based protection
    - PKU with fallback to mprotect
    
    If PKU is not supported by the OS or hardware, then PKU is identical to
    no protection, and PKU with fallback is identical to mprotect. We always
    execute all four configurations anyway.
    If protection is effective, we expect code to be writable within a
    {CodeSpaceWriteScope}, and not writable otherwise. When trying to write
    to non-writable code, we expect a crash of the process (checked via
    {ASSERT_DEATH_IF_SUPPORTED}).
    
    R=jkummerow@chromium.org
    CC=​mpdenton@chromium.org
    
    Bug: v8:11974
    Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_rel_ng
    Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_dbg_ng
    Change-Id: I4ec0ce9426f70ff41a292b9ea25be1e8956a670e
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3138210
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Reviewed-by: 's avatarJakob Kummerow <jkummerow@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#76726}
    c9704cf7
wasm-code-manager.h 45.8 KB