Commit Graph

3 Commits

Author SHA1 Message Date
Qi Wang
d660683d3d Fix test config of lg_san_uaf_align.
The option may be configure-disabled, which resulted in the invalid options
output from the tests.
2022-01-04 11:03:51 -08:00
Qi Wang
e491cef9ab Add stats for stashed bytes in tcache. 2021-12-29 14:44:43 -08:00
Qi Wang
b75822bc6e Implement use-after-free detection using junk and stash.
On deallocation, sampled pointers (specially aligned) get junked and stashed
into tcache (to prevent immediate reuse).  The expected behavior is to have
read-after-free corrupted and stopped by the junk-filling, while
write-after-free is checked when flushing the stashed pointers.
2021-12-29 14:44:43 -08:00