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Fourth -rc update for 4.14 kernel

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- Fix an oops issue in the new RDMA netlink code
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fix from Doug Ledford:
 "Fix an oops issue in the new RDMA netlink code"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  RDMA/netlink: OOPs in rdma_nl_rcv_msg() from misinterpreted flag
This commit is contained in:
Linus Torvalds 2017-10-26 23:04:14 +02:00
commit 15f859ae5c
1 changed files with 12 additions and 1 deletions
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13
drivers/infiniband/core/netlink.c
View file

@ -175,13 +175,24 @@ static int rdma_nl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
!netlink_capable(skb, CAP_NET_ADMIN))
return -EPERM;
/*
* LS responses overload the 0x100 (NLM_F_ROOT) flag. Don't
* mistakenly call the .dump() function.
*/
if (index == RDMA_NL_LS) {
if (cb_table[op].doit)
return cb_table[op].doit(skb, nlh, extack);
return -EINVAL;
}
/* FIXME: Convert IWCM to properly handle doit callbacks */
if ((nlh->nlmsg_flags & NLM_F_DUMP) || index == RDMA_NL_RDMA_CM ||
index == RDMA_NL_IWCM) {
struct netlink_dump_control c = {
.dump = cb_table[op].dump,
};
return netlink_dump_start(nls, skb, nlh, &c);
if (c.dump)
return netlink_dump_start(nls, skb, nlh, &c);
return -EINVAL;
}
if (cb_table[op].doit)