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staging: lustre: prevent underflows in lnet_parse_reply()

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I don't know if "hdr->payload_length;" can really be negative, but if so
then we shouldn't allow it.  Do the comparison as an unsigned.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2015-04-01 11:13:03 +03:00 committed by Greg Kroah-Hartman
parent faec8ab42b
commit 005b23d6b6
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/lustre/lnet/lnet/lib-move.c
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@ -1530,7 +1530,7 @@ lnet_parse_reply(lnet_ni_t *ni, lnet_msg_t *msg)
LASSERT(md->md_offset == 0);
rlength = hdr->payload_length;
mlength = min_t(int, rlength, md->md_length);
mlength = min_t(uint, rlength, md->md_length);
if (mlength < rlength &&
(md->md_options & LNET_MD_TRUNCATE) == 0) {