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linux-user: check return value of malloc()

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Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Acked-by: Riku Voipio <riku.voipio@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
zhanghailiang 2014-08-14 15:29:18 +08:00 committed by Riku Voipio
parent 29560a6cb7
commit 29e03fcb62
1 changed files with 4 additions and 0 deletions
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4
linux-user/syscall.c
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@ -2904,6 +2904,10 @@ static inline abi_long do_msgsnd(int msqid, abi_long msgp,
if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0)) if (!lock_user_struct(VERIFY_READ, target_mb, msgp, 0))
return -TARGET_EFAULT; return -TARGET_EFAULT;
host_mb = malloc(msgsz+sizeof(long)); 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); host_mb->mtype = (abi_long) tswapal(target_mb->mtype);
memcpy(host_mb->mtext, target_mb->mtext, msgsz); memcpy(host_mb->mtext, target_mb->mtext, msgsz);
ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg)); ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));