mirror of
https://github.com/torvalds/linux.git
synced 2026-09-20 09:40:02 +02:00
a179686b91
mmap() returns MAP_FAILED, which is defined as (void *)-1, on error, not NULL. Several selftests incorrectly check the return value of mmap() using !ptr or ptr == NULL, which would erroneously treat MAP_FAILED as a valid pointer since MAP_FAILED is non-zero and non-NULL. This can lead to segfaults when mmap() actually fails under memory pressure. Link: https://lore.kernel.org/20260513025223.592766-1-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Reviewed-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|---|---|---|
| .. | ||
| crypto/chacha20-s390 | ||
| cxl | ||
| fault-injection | ||
| ktest | ||
| kunit | ||
| memblock | ||
| nvdimm | ||
| radix-tree | ||
| rbtree | ||
| scatterlist | ||
| selftests | ||
| shared | ||
| vma | ||
| vsock | ||