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Add test for memory merge after split panic of mprotect

This commit is contained in:
Marsman1996 2026-01-29 20:22:04 +08:00
parent e672ccd940
commit 750187cc72
1 changed files with 14 additions and 0 deletions
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14
test/initramfs/src/apps/mmap/mmap_and_mprotect.c
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@ -69,3 +69,17 @@ FN_TEST(mprotect_invalid_permission)
TEST_SUCC(munmap(addr, PAGE_SIZE));
}
END_TEST()
FN_TEST(mprotect_merge_after_split_mapping)
{
void *addr = TEST_SUCC(mmap(NULL, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
// Split the mapping into two.
TEST_SUCC(mprotect(addr, PAGE_SIZE, PROT_READ));
// After the first mapping is protected, the two mappings will merge.
TEST_SUCC(mprotect(addr, 2 * PAGE_SIZE, PROT_READ | PROT_WRITE));
TEST_SUCC(munmap(addr, 2 * PAGE_SIZE));
}
END_TEST()