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[v4,22/36] linux-user: Use do_munmap for target_mmap failure

Message ID 20240215062018.795056-23-richard.henderson@linaro.org
State Superseded
Headers show
Series linux-user: Improve host and guest page size handling | expand

Commit Message

Richard Henderson Feb. 15, 2024, 6:20 a.m. UTC 
For the cases for which the host mmap succeeds, but does
not yield the desired address, use do_munmap to restore
the reserved_va memory reservation.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/mmap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Philippe Mathieu-Daudé Feb. 15, 2024, 7:05 a.m. UTC | #1 
On 15/2/24 07:20, Richard Henderson wrote:
> For the cases for which the host mmap succeeds, but does
> not yield the desired address, use do_munmap to restore
> the reserved_va memory reservation.
> 
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>   linux-user/mmap.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff mbox series

Patch

diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 8ebcca4444..cbcd31e941 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -326,7 +326,7 @@  static bool mmap_frag(abi_ulong real_start, abi_ulong start, abi_ulong last,
                        flags | MAP_ANONYMOUS, -1, 0);
         if (p != host_start) {
             if (p != MAP_FAILED) {
-                munmap(p, host_page_size);
+                do_munmap(p, host_page_size);
                 errno = EEXIST;
             }
             return false;
@@ -622,7 +622,7 @@  static abi_long target_mmap__locked(abi_ulong start, abi_ulong len,
             p = mmap(g2h_untagged(start), len, host_prot,
                      flags | MAP_FIXED, fd, host_offset);
             if (p == MAP_FAILED) {
-                munmap(g2h_untagged(start), host_len);
+                do_munmap(g2h_untagged(start), host_len);
                 return -1;
             }
             host_start += offset - host_offset;
@@ -735,7 +735,7 @@  static abi_long target_mmap__locked(abi_ulong start, abi_ulong len,
                      flags, fd, offset1);
             if (p != want_p) {
                 if (p != MAP_FAILED) {
-                    munmap(p, len1);
+                    do_munmap(p, len1);
                     errno = EEXIST;
                 }
                 return -1;