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| author | wolfbeast <mcwerewolf@gmail.com> | 2018-04-19 12:08:25 +0200 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@gmail.com> | 2018-04-19 12:08:25 +0200 |
| commit | d7df65954a585e97ccee21fa9cb50cb116efddcc (patch) | |
| tree | 9ed9a1f46f5d2e8373dcab553bad55b54bb8103b /js/src/jit/ProcessExecutableMemory.h | |
| parent | ba71cc45fef6dfaecef8f5edf65ce1f1ff457624 (diff) | |
| parent | 9135a11e8c8f0837738fd976b28d36a53fd1de27 (diff) | |
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Merge branch 'ported-upstream'
Diffstat (limited to 'js/src/jit/ProcessExecutableMemory.h')
| -rw-r--r-- | js/src/jit/ProcessExecutableMemory.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/jit/ProcessExecutableMemory.h b/js/src/jit/ProcessExecutableMemory.h index 078ce7cb7..a0e2fab98 100644 --- a/js/src/jit/ProcessExecutableMemory.h +++ b/js/src/jit/ProcessExecutableMemory.h @@ -17,6 +17,14 @@ namespace jit { // alignment though. static const size_t ExecutableCodePageSize = 64 * 1024; +// 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 + enum class ProtectionSetting { Protected, // Not readable, writable, or executable. Writable, |