diff mbox

[v4,07/10] linux-user: check return value of malloc()

Message ID 1407489672-12212-8-git-send-email-zhang.zhanghailiang@huawei.com
State New
Headers show

Commit Message

Zhanghailiang Aug. 8, 2014, 9:21 a.m. UTC 
Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
---
 linux-user/syscall.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index a50229d..8e5ccf1 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2870,6 +2870,10 @@  static inline abi_long do_msgsnd(int msqid, abi_long msgp,
     if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
         return -TARGET_EFAULT;
     host_mb = malloc(msgsz+sizeof(long));
+    if (!host_mb) {
+        unlock_user_struct(target_mb, msgp, 0);
+        return -TARGET_ENOMEM;
+    }
     host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
     memcpy(host_mb->mtext, target_mb->mtext, msgsz);
     ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));