When failure occurs during allocating vec[i], also need free all
allocated vec[i] in failure processing code block before return.
If error is EFAULT when "i == 0", vec[i].iov_base is NULL, then can just
skip it, so can still use "while (--i >= 0)" for the free looping.
Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
---
linux-user/syscall.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 290fdea..e6a8e49 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1873,6 +1873,11 @@ static struct iovec *lock_iovec(int type, abi_ulong
target_addr,
return vec;
fail:
+ while (--i >= 0) {
+ if (tswapal(vec[i].iov_len) > 0) {
+ unlock_user(vec[i].iov_base, base, 0);
+ }
+ }
unlock_user(target_vec, target_addr, 0);
fail2:
free(vec);
--
1.9.3 (Apple Git-50)
