Re: [PATCH net-next] rds: rds_msg_zcopy should return error of null rm->data.op_mmp_znotifier
From: Santosh Shilimkar <hidden>
Date: 2018-02-23 00:01:56
On 2/22/2018 1:40 PM, Sowmini Varadhan wrote:
if either or both of MSG_ZEROCOPY and SOCK_ZEROCOPY have not been
specified, the rm->data.op_mmp_znotifier allocation will be skipped.
In this case, it is invalid ot pass down a cmsghdr with
RDS_CMSG_ZCOPY_COOKIE, so return EINVAL from rds_msg_zcopy for this
case.
Reported-by: syzbot+f893ae7bb2f6456dfbc3@syzkaller.appspotmail.com
Fixes: 0cebaccef3ac ("rds: zerocopy Tx support.")
Signed-off-by: Sowmini Varadhan <redacted>
---Acked-by: Santosh Shilimkar <redacted>