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IB/core: Clear AH attr variable to prevent garbage data 

commit 8b0f93d949 upstream.

During create-ah from userspace, uverbs is sending garbage data in
attr.dmac and attr.vlan_id.  This patch sets attr.dmac and
attr.vlan_id to zero.

Fixes: dd5f03beb4 ("IB/core: Ethernet L2 attributes in verbs/cm structures")
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Devesh Sharma 2014-09-26 20:45:32 +05:30 committed by Greg Kroah-Hartman
parent ce1d89b64c
commit ff1d3b7890
1 changed files with 2 additions and 0 deletions
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2
drivers/infiniband/core/uverbs_cmd.c
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@ -2425,6 +2425,8 @@ ssize_t ib_uverbs_create_ah(struct ib_uverbs_file *file,
attr.grh.sgid_index = cmd.attr.grh.sgid_index;
attr.grh.hop_limit = cmd.attr.grh.hop_limit;
attr.grh.traffic_class = cmd.attr.grh.traffic_class;
attr.vlan_id = 0;
memset(&attr.dmac, 0, sizeof(attr.dmac));
memcpy(attr.grh.dgid.raw, cmd.attr.grh.dgid, 16);
ah = ib_create_ah(pd, &attr);