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net/9p: fix client code to fail more gracefully on protocol error

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commit b85f7d92d7 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Eric Van Hensbergen
2011-07-13 19:12:18 -05:00
committed by Greg Kroah-Hartman
parent f2685ef0fb
commit 7b551b7069
1 changed files with 2 additions and 1 deletions
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3
net/9p/client.c
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@@ -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;