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| author | wicknix <39230578+wicknix@users.noreply.github.com> | 2019-04-15 18:58:07 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-04-15 18:58:07 -0500 |
| commit | 5a1843c9f9e323627f9c35529e6a8c853d4dbb0d (patch) | |
| tree | 62de3cd7cb8a6f75e568863bb73ca2deb80d87a9 /js/src/jit/ProcessExecutableMemory.cpp | |
| parent | 065f6f9e5ebc1ed6cfaadaf7851b6021fa94a013 (diff) | |
| parent | 095ea556855b38138e39e713f482eb440f7da9b2 (diff) | |
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Merge pull request #1 from MoonchildProductions/master
keep up with mc
Diffstat (limited to 'js/src/jit/ProcessExecutableMemory.cpp')
| -rw-r--r-- | js/src/jit/ProcessExecutableMemory.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/jit/ProcessExecutableMemory.cpp b/js/src/jit/ProcessExecutableMemory.cpp index 301541541..71c2ab0dc 100644 --- a/js/src/jit/ProcessExecutableMemory.cpp +++ b/js/src/jit/ProcessExecutableMemory.cpp @@ -385,6 +385,14 @@ class PageBitSet #endif }; +// Limit on the number of bytes of executable memory to prevent JIT spraying +// attacks. +#if JS_BITS_PER_WORD == 32 +static const size_t MaxCodeBytesPerProcess = 128 * 1024 * 1024; +#else +static const size_t MaxCodeBytesPerProcess = 1 * 1024 * 1024 * 1024; +#endif + // Per-process executable memory allocator. It reserves a block of memory of // MaxCodeBytesPerProcess bytes, then allocates/deallocates pages from that. // |