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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-11-10 11:39:27 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-11-10 11:39:27 +0100 |
| commit | 974a481d12bf430891725bd3662876358e57e11a (patch) | |
| tree | cad011151456251fef2f1b8d02ef4b4e45fad61a /js/src/jit/ProcessExecutableMemory.cpp | |
| parent | 6bd66b1728eeddb058066edda740aaeb2ceaec23 (diff) | |
| parent | 736d25cbec4541186ed46c935c117ce4d1c7f3bb (diff) | |
| download | UXP-974a481d12bf430891725bd3662876358e57e11a.tar UXP-974a481d12bf430891725bd3662876358e57e11a.tar.gz UXP-974a481d12bf430891725bd3662876358e57e11a.tar.lz UXP-974a481d12bf430891725bd3662876358e57e11a.tar.xz UXP-974a481d12bf430891725bd3662876358e57e11a.zip | |
Merge branch 'master' into js-modules
# Conflicts:
# modules/libpref/init/all.js
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. // |