emo/hardened_malloc
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MREMAP_DONTUNMAP may be usable in realloc

Browse Source
This commit is contained in:
Daniel Micay 2021-05-12 10:51:52 -04:00
parent 96a322bcbe
commit a71ab1a2eb
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
KERNEL_FEATURE_WISHLIST.md
View File

@ -16,6 +16,8 @@ Somewhat important and an easy sell:
* also needed by jemalloc for different reasons * also needed by jemalloc for different reasons
* not needed if the kernel gets first class support for arbitrarily sized * not needed if the kernel gets first class support for arbitrarily sized
guard pages and a virtual memory quarantine feature guard pages and a virtual memory quarantine feature
* `MREMAP_DONTUNMAP` is now available but doesn't support expanding the
mapping which may be an issue due to VMA merging being unreliable
Fairly infeasible to land but could reduce overhead and extend coverage of Fairly infeasible to land but could reduce overhead and extend coverage of
security features to other code directly using mmap: security features to other code directly using mmap: