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stronger secure mode when defining MI_SECURE=4: checks for double free, corrupted free list, and invalid pointer frees. Performance is impacted but not too much -- more perf testing is needed

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daan 2019-10-18 18:11:04 -07:00
parent fdfa6ed260
commit 2affdbbd2e
8 changed files with 121 additions and 20 deletions
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7
include/mimalloc-types.h
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@ -22,8 +22,11 @@ terms of the MIT license. A copy of the license can be found in the file
// Define MI_STAT as 1 to maintain statistics; set it to 2 to have detailed statistics (but costs some performance).
// #define MI_STAT 1
// Define MI_SECURE as 1 to encode free lists
// #define MI_SECURE 1
// Define MI_SECURE to enable security mitigations
// #define MI_SECURE 1 // guard page around metadata
// #define MI_SECURE 2 // guard page around each mimalloc page
// #define MI_SECURE 3 // encode free lists
// #define MI_SECURE 4 // all security enabled (checks for double free, corrupted free list and invalid pointer free)
#if !defined(MI_SECURE)
#define MI_SECURE 0