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net/9p: fix client code to fail more gracefully on protocol error
author
Eric Van Hensbergen
<ericvh@gmail.com>
Thu, 14 Jul 2011 00:12:18 +0000
(19:12 -0500)
committer
Eric Van Hensbergen
<ericvh@gmail.com>
Sat, 23 Jul 2011 14:32:29 +0000
(09:32 -0500)
There was a BUG_ON to protect against a bad id which could be dealt with
more gracefully.
Reported-by: Natalie Orlin <norlin@us.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
net/9p/client.c
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diff --git
a/net/9p/client.c
b/net/9p/client.c
index
9e3b0e6
..
81e667b
100644
(file)
--- a/
net/9p/client.c
+++ b/
net/9p/client.c
@@
-280,7
+280,8
@@
struct p9_req_t *p9_tag_lookup(struct p9_client *c, u16 tag)
* buffer to read the data into */
tag++;
- BUG_ON(tag >= c->max_tag);
+ if(tag >= c->max_tag)
+ return NULL;
row = tag / P9_ROW_MAXTAG;
col = tag % P9_ROW_MAXTAG;