6 Commits

Author SHA1 Message Date
Evgenii Stepanov
237b024b06 [hwasan] Fix tests when vm.overcommit_memory=1.
Remove an invalid check from sizes.cpp that only passes when overcommit is disabled.

Fixes PR48274.

Differential Revision: https://reviews.llvm.org/D91999
2020-11-23 16:05:56 -08:00
Evgenii Stepanov
b3ccfa1e0c [hwasan] Increase max allocation size to 1Tb.
2Gb is unreasonably low on devices with 12Gb RAM and more.

Differential Revision: https://reviews.llvm.org/D89750
2020-10-20 14:01:48 -07:00
Peter Collingbourne
e757cadb07 hwasan: Untag global variable addresses in tests.
Once we start instrumenting globals, all addresses including those of string literals
that we pass to the operating system will start being tagged. Since we can't rely
on the operating system to be able to cope with these addresses, we need to untag
them before passing them to the operating system. This change introduces a macro
that does so and uses it everywhere it is needed.

Differential Revision: https://reviews.llvm.org/D65768

llvm-svn: 367938
2019-08-05 21:46:10 +00:00
Evgeniy Stepanov
d1a710047b [sanitizer] Implement reallocarray.
Summary:
It's a cross of calloc and realloc. Sanitizers implement calloc-like check for size
overflow.

Reviewers: vitalybuka, kcc

Subscribers: kubamracek, #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D61108

llvm-svn: 359708
2019-05-01 17:33:01 +00:00
Peter Collingbourne
6141b037a9 gn build: Upgrade to NDK r19.
NDK r19 includes a sysroot that can be used directly by the compiler
without creating a standalone toolchain, so we just need a handful
of flags to point Clang there.

Differential Revision: https://reviews.llvm.org/D57733

llvm-svn: 353139
2019-02-05 05:10:19 +00:00
Evgeniy Stepanov
5b332abd66 [hwasan] Fix malloc overflow detection.
Check size limit before rounding up, otherwise malloc((size_t)-1)
would happily allocate 0 bytes.

Steal a nice test case from scudo.

llvm-svn: 341612
2018-09-07 00:27:11 +00:00