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| author | Justin Cady <desk@justincady.com> | 2023-06-07 10:59:07 -0400 |
|---|---|---|
| committer | Justin Cady <desk@justincady.com> | 2023-06-07 10:59:07 -0400 |
| commit | a3a4369ea100d8693d45dc21eda9c2c8171b1068 (patch) | |
| tree | ca3cd58d96732f44337a7e5086d0a8146ef863b1 /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 2878282dc550e6a8174917480a2dc22bbe283ed1 (diff) | |
| download | llvm-a3a4369ea100d8693d45dc21eda9c2c8171b1068.zip llvm-a3a4369ea100d8693d45dc21eda9c2c8171b1068.tar.gz llvm-a3a4369ea100d8693d45dc21eda9c2c8171b1068.tar.bz2 | |
[ASAN] Fix validation size for dirent on FreeBSD
Typically the size required to represent a dirent is stored in `d_reclen`. But
this not always the case for FreeBSD (for example, when walking a directory
over NFS).
This leads to ASAN false positives for `scandir` and similar functions. Because
ASAN uses `d_reclen` for the range to validate, it can overrun when `d_reclen` is
incorrect (too large).
This change adds `__sanitizer_dirsiz` which fixes the dirent size calculation
for FreeBSD. Other platforms continue to use `d_reclen`.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D151583
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions