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authorJieqiang Wang <jieqiang.wang@arm.com>2021-07-29 17:03:16 +0000
committerDave Barach <dave@barachs.net>2021-10-04 10:30:54 -0400
commit039f289e516b073f6db67f7b35aa3aa64fdc9c82 (patch)
tree0cf73798f3641af66b35b463ac6945e8789e364c /.gitreview
parent2c0dc3e58625062da2018ff7aa15c8a0b2dbbc3c (diff)
vppinfra: fix potential memory access error in _pool_init_fixed
_pool_init_fixed uses mmap to initialize a fixed-size and preallocated pool, whose size is the sum of vector_size and free_index_size with alignment to the CLIB_CACHE_LINE_BYTES and page size. In this way vector_size equals to pool_header_t + vec_header_t + elt_size * max_elts so moving to the end of the pool space should be pool_header_t pointer + vector_size, instead of vec_header_t pointer + vector_size. Simple code to reproduce this error: u64 *pool; pool_init_fixed(pool, 2042); Improve unit test to cover this case Type: fix Signed-off-by: Jieqiang Wang <jieqiang.wang@arm.com> Reviewed-by: Lijian Zhang <lijian.zhang@arm.com> Reviewed-by: Tianyu Li <tianyu.li@arm.com> Change-Id: If088ef89b3dcb2d874ee837ae9da60983b14615c Signed-off-by: Dave Barach <dave@barachs.net>
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