• Georgia Kouveli's avatar
    Reland "[arm64] Protect return addresses stored on stack" · 73f88b5f
    Georgia Kouveli authored
    This is a reland of 137bfe47
    
    Original change's description:
    > [arm64] Protect return addresses stored on stack
    > 
    > This change uses the Arm v8.3 pointer authentication instructions in
    > order to protect return addresses stored on the stack.  The generated
    > code signs the return address before storing on the stack and
    > authenticates it after loading it. This also changes the stack frame
    > iterator in order to authenticate stored return addresses and re-sign
    > them when needed, as well as the deoptimizer in order to sign saved
    > return addresses when creating new frames. This offers a level of
    > protection against ROP attacks.
    > 
    > This functionality is enabled with the v8_control_flow_integrity flag
    > that this CL introduces.
    > 
    > The code size effect of this change is small for Octane (up to 2% in
    > some cases but mostly much lower) and negligible for larger benchmarks,
    > however code size measurements are rather noisy. The performance impact
    > on current cores (where the instructions are NOPs) is single digit,
    > around 1-2% for ARES-6 and Octane, and tends to be smaller for big
    > cores than for little cores.
    > 
    > Bug: v8:10026
    > Change-Id: I0081f3938c56e2f24d8227e4640032749f4f8368
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1373782
    > Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
    > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
    > Reviewed-by: Georg Neis <neis@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#66239}
    
    Bug: v8:10026
    Change-Id: Id1adfa2e6c713f6977d69aa467986e48fe67b3c2
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2051958Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
    Reviewed-by: 's avatarRoss McIlroy <rmcilroy@chromium.org>
    Commit-Queue: Georgia Kouveli <georgia.kouveli@arm.com>
    Cr-Commit-Position: refs/heads/master@{#66254}
    73f88b5f
Name
Last commit
Last update
..
benchmarks Loading commit data...
cctest Loading commit data...
common Loading commit data...
debugger Loading commit data...
fuzzer Loading commit data...
inspector Loading commit data...
intl Loading commit data...
js-perf-test Loading commit data...
memory Loading commit data...
message Loading commit data...
mjsunit Loading commit data...
mkgrokdump Loading commit data...
mozilla Loading commit data...
test262 Loading commit data...
torque Loading commit data...
unittests Loading commit data...
wasm-api-tests Loading commit data...
wasm-js Loading commit data...
wasm-spec-tests Loading commit data...
webkit Loading commit data...
BUILD.gn Loading commit data...
OWNERS Loading commit data...