[LTP] [PATCH v2] mseal02: Handle multiple errnos for 32-bit compat mode

[Wei Gao via ltp <ltp@lists.linux.it>]

In 32-bit compat mode, the overflow_size (calculated using a 32-bit ULONG_MAX)
does not cause a 64-bit integer wrap-around when added to the start address.
Consequently, the kernel see valid range that points to unmapped space, returning
ENOMEM instead of the expected EINVAL.

Signed-off-by: Wei Gao <wegao@suse.com>
---
 testcases/kernel/syscalls/mseal/mseal02.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/testcases/kernel/syscalls/mseal/mseal02.c b/testcases/kernel/syscalls/mseal/mseal02.c
index e11d7dbf4..7e0172bc3 100644
--- a/testcases/kernel/syscalls/mseal/mseal02.c
+++ b/testcases/kernel/syscalls/mseal/mseal02.c
@@ -58,6 +58,9 @@ static void setup(void)
 	SAFE_MUNMAP(start_addr + twopages_size, page_size);
 	unallocated_start_addr = start_addr + twopages_size;
 	unallocated_end_addr = start_addr + page_size;
+
+	if (tst_is_compat_mode())
+		tcases[2].exp_err = ENOMEM;
 }
 
 static void cleanup(void)
-- 
2.52.0


-- 
Mailing list info: https://lists.linux.it/listinfo/ltp