diff mbox series

[27/45] bsd-user: Use page_check_range_empty for MAP_EXCL

Message ID 20230709182934.309468-54-richard.henderson@linaro.org
State Superseded
Headers show
Series linux-user: patch roundup | expand

Commit Message

Richard Henderson July 9, 2023, 6:29 p.m. UTC 
The previous check returned -1 when any page within
[start, start+len) is unmapped, not when all are unmapped.

Cc: Warner Losh <imp@bsdimp.com>
Cc: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230707204054.8792-11-richard.henderson@linaro.org>
---
 bsd-user/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index 565b9f97ed..07b5b8055e 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -609,7 +609,7 @@  abi_long target_mmap(abi_ulong start, abi_ulong len, int prot,
         }
 
         /* Reject the mapping if any page within the range is mapped */
-        if ((flags & MAP_EXCL) && page_check_range(start, len, 0) < 0) {
+        if ((flags & MAP_EXCL) && !page_check_range_empty(start, end - 1)) {
             errno = EINVAL;
             goto fail;
         }