• Clemens Backes's avatar
    Reland "Reland: [wasm] Check correctness of thread-local write protection" · 3fd8025d
    Clemens Backes authored
    This is a reland of 1c0cca0f. It is
    modified now to use V8_HAS_PTHREAD_JIT_WRITE_PROTECT and is rebased on
    https://crrev.com/c/3085271 which fixes the definition of that macro.
    
    Original change's description:
    > Reland: [wasm] Check correctness of thread-local write protection
    >
    > The fix landed as a separate CL: https://crrev.com/c/3081522
    > This is an unmodified reland.
    >
    > Original description:
    > We make an undocumented assumption in {CodeSpaceWriteScope} that a
    > single thread will only work on one module at a time. If this is
    > violated, the thread-local {code_space_write_nesting_level_} would
    > prevent the second module from being switched to writable.
    >
    > This CL adds a second thread local (in debug only) to check that if
    > there is already a {CodeSpaceWriteScope} open that it contains the same
    > {NativeModule} as any nested scope.
    >
    > R=jkummerow@chromium.org
    >
    > Bug: v8:11974
    > Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg_ng
    > Cq-Include-Trybots: luci.v8.try:v8_mac64_gc_stress_dbg_ng
    > Change-Id: Id827b6ca472f695e4500584349aba159aa07eed1
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3080578
    > Commit-Queue: Clemens Backes <clemensb@chromium.org>
    > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#76177}
    
    Bug: v8:11974
    Change-Id: Iffc510e85c8c56f26bfa88115ed3a8bdd33ef422
    Cq-Include-Trybots: luci.v8.try:v8_linux_gc_stress_dbg_ng
    Cq-Include-Trybots: luci.v8.try:v8_mac64_gc_stress_dbg_ng
    Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_rel_ng
    Cq-Include-Trybots: luci.v8.try:v8_mac_arm64_dbg_ng
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3085269Reviewed-by: 's avatarJakob Kummerow <jkummerow@chromium.org>
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#76235}
    3fd8025d
code-space-access.h 3.13 KB