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authorDave Watson <davejwatson@fb.com>2018-03-26 22:31:21 +0300
committerDavid S. Miller <davem@davemloft.net>2018-03-27 18:00:18 +0300
commitcd00edc179863848abab5cc5683de5b7b5f70954 (patch)
treec11ac851909a6456a87b4308b26963fbf0ecd2bf /net/strparser
parent734549eb550c0c720bc89e50501f1b1e98cdd841 (diff)
downloadlinux-cd00edc179863848abab5cc5683de5b7b5f70954.tar.xz
strparser: Fix sign of err codes
strp_parser_err is called with a negative code everywhere, which then calls abort_parser with a negative code. strp_msg_timeout calls abort_parser directly with a positive code. Negate ETIMEDOUT to match signed-ness of other calls. The default abort_parser callback, strp_abort_strp, sets sk->sk_err to err. Also negate the error here so sk_err always holds a positive value, as the rest of the net code expects. Currently a negative sk_err can result in endless loops, or user code that thinks it actually sent/received err bytes. Found while testing net/tls_sw recv path. Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages") Signed-off-by: Dave Watson <davejwatson@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/strparser')
-rw-r--r--net/strparser/strparser.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/strparser/strparser.c b/net/strparser/strparser.c
index 1fdab5c4eda8..b9283ce5cd85 100644
--- a/net/strparser/strparser.c
+++ b/net/strparser/strparser.c
@@ -60,7 +60,7 @@ static void strp_abort_strp(struct strparser *strp, int err)
struct sock *sk = strp->sk;
/* Report an error on the lower socket */
- sk->sk_err = err;
+ sk->sk_err = -err;
sk->sk_error_report(sk);
}
}
@@ -458,7 +458,7 @@ static void strp_msg_timeout(struct work_struct *w)
/* Message assembly timed out */
STRP_STATS_INCR(strp->stats.msg_timeouts);
strp->cb.lock(strp);
- strp->cb.abort_parser(strp, ETIMEDOUT);
+ strp->cb.abort_parser(strp, -ETIMEDOUT);
strp->cb.unlock(strp);
}