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| author | wolfbeast <mcwerewolf@gmail.com> | 2018-08-30 12:26:26 +0200 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@gmail.com> | 2018-08-30 12:33:56 +0200 |
| commit | 73b202b1e5688c0cff883873950f0261c50018e7 (patch) | |
| tree | af3bc9bfce8c1d47a96ba274d09b5224d6c1567e /js/src/jit/ProcessExecutableMemory.cpp | |
| parent | 21042963de0513abbb74a57733e703a15df6111b (diff) | |
| download | UXP-73b202b1e5688c0cff883873950f0261c50018e7.tar UXP-73b202b1e5688c0cff883873950f0261c50018e7.tar.gz UXP-73b202b1e5688c0cff883873950f0261c50018e7.tar.lz UXP-73b202b1e5688c0cff883873950f0261c50018e7.tar.xz UXP-73b202b1e5688c0cff883873950f0261c50018e7.zip | |
Revert "Bug 1444668 - Avoid allocating large AssemblerBuffers. r=luke, r=bbouvier, a=RyanVM"
This reverts commit 9472136272f01b858412f2d9d7854d2daa82496f.
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. // |