Vlad Tsyrklevich 033d7590b1 SafeStack: Prevent OOB reads with mem intrinsics ...

Summary:
Currently, the SafeStack analysis disallows out-of-bounds writes but not
out-of-bounds reads for mem intrinsics like llvm.memcpy. This could
cause leaks of pointers to the safe stack by leaking spilled registers/
frame pointers. Check for allocas used as source or destination pointers
to mem intrinsics.

Reviewers: eugenis

Reviewed By: eugenis

Subscribers: pcc, llvm-commits, kcc

Differential Revision: https://reviews.llvm.org/D51334

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@341116 91177308-0d34-0410-b5e6-96231b3b80d8

2018-08-30 20:44:51 +00:00

..

AArch64

[SafeStack] Handle unreachable code with safe stack coloring.

2018-08-22 21:38:57 +00:00

ARM

[SafeStack] Set debug location for calls to __safestack_pointer_address.

2018-08-24 20:42:32 +00:00

X86

SafeStack: Prevent OOB reads with mem intrinsics

2018-08-30 20:44:51 +00:00