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IB/ipath: ipath_skip_sge() can break if num_sge > 1

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ipath_skip_sge() doesn't exactly duplicate the side effects of
ipath_copy_sge() if num_sge > 1 since it doesn't decrement ss->num_sge.
This could result in the sg_list being accessed out of bounds.
Since ipath_skip_sge() is almost always called with num_sge == 1,
the original "optimization" is almost never used.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Ralph Campbell 2006-07-17 18:21:24 -07:00 committed by Roland Dreier
parent c9f79bdc21
commit 16c59419a0
1 changed files with 0 additions and 4 deletions
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4
drivers/infiniband/hw/ipath/ipath_verbs.c
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@ -191,10 +191,6 @@ void ipath_skip_sge(struct ipath_sge_state *ss, u32 length)
{ {
struct ipath_sge *sge = &ss->sge; struct ipath_sge *sge = &ss->sge;
while (length > sge->sge_length) {
length -= sge->sge_length;
ss->sge = *ss->sg_list++;
}
while (length) { while (length) {
u32 len = sge->length; u32 len = sge->length;