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| author | wolfbeast <mcwerewolf@gmail.com> | 2018-09-04 20:53:31 +0200 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@gmail.com> | 2018-09-04 20:53:31 +0200 |
| commit | 580084e9e1d0355c96a54a9641df6c1fee894948 (patch) | |
| tree | 5aff416b5aed2ca9e326054567d837f28c20ed25 /js/src/jit/ProcessExecutableMemory.cpp | |
| parent | fc61780b35af913801d72086456f493f63197da6 (diff) | |
| parent | b28ab55f9675f2e97dda9a4fcac0d4f5267a2bb9 (diff) | |
| download | UXP-580084e9e1d0355c96a54a9641df6c1fee894948.tar UXP-580084e9e1d0355c96a54a9641df6c1fee894948.tar.gz UXP-580084e9e1d0355c96a54a9641df6c1fee894948.tar.lz UXP-580084e9e1d0355c96a54a9641df6c1fee894948.tar.xz UXP-580084e9e1d0355c96a54a9641df6c1fee894948.zip | |
Merge branch 'master' into Basilisk-releasev2018.09.05
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. // |