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authorEric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>2008-09-24 16:22:22 -0500
committerEric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>2008-09-24 16:22:22 -0500
commit16ec4700127d479143c77fd9128dfa17ab572963 (patch)
tree0b1264d7d8242997dece96868be033503e55be55
parent62aa528e0299ffef8e138d9d92d13e631d06c5ff (diff)
9p: fix put_data error handling
Abhishek Kulkarni pointed out an inconsistency in the way errors are returned from p9_put_data. On deeper exploration it seems the error handling for this path was completely wrong. This patch adds checks for allocation problems and propagates errors correctly. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
-rw-r--r--net/9p/conv.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/9p/conv.c b/net/9p/conv.c
index 44547201f5bc..5ad3a3bd73b2 100644
--- a/net/9p/conv.c
+++ b/net/9p/conv.c
@@ -451,8 +451,10 @@ p9_put_data(struct cbuf *bufp, const char *data, int count,
unsigned char **pdata)
{
*pdata = buf_alloc(bufp, count);
+ if (*pdata == NULL)
+ return -ENOMEM;
memmove(*pdata, data, count);
- return count;
+ return 0;
}
static int
@@ -460,6 +462,8 @@ p9_put_user_data(struct cbuf *bufp, const char __user *data, int count,
unsigned char **pdata)
{
*pdata = buf_alloc(bufp, count);
+ if (*pdata == NULL)
+ return -ENOMEM;
return copy_from_user(*pdata, data, count);
}