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| author | Michal Kubecek <mkubecek@suse.cz> | 2017-11-15 13:09:32 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-16 10:49:00 +0900 |
| commit | 0a833c29d89656025443cb9f0ebff7052dd95ce0 (patch) | |
| tree | 136494be53be2512054e257ae0cc0e0e4d011910 /net/wireless | |
| parent | 423852f89034492cc40920c00908f6de7d2dbe4f (diff) | |
| download | linux-stable-0a833c29d89656025443cb9f0ebff7052dd95ce0.tar.gz linux-stable-0a833c29d89656025443cb9f0ebff7052dd95ce0.tar.bz2 linux-stable-0a833c29d89656025443cb9f0ebff7052dd95ce0.zip | |
genetlink: fix genlmsg_nlhdr()
According to the description, first argument of genlmsg_nlhdr() points to
what genlmsg_put() returns, i.e. beginning of user header. Therefore we
should only subtract size of genetlink header and netlink message header,
not user header.
This also means we don't need to pass the pointer to genetlink family and
the same is true for genl_dump_check_consistent() which is the only caller
of genlmsg_nlhdr(). (Note that at the moment, these functions are only
used for families which do not have user header so that they are not
affected.)
Fixes: 670dc2833d14 ("netlink: advertise incomplete dumps")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/nl80211.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index bb16f1ec766e..a0e1951227fa 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -6291,7 +6291,7 @@ static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, if (!hdr) return -1; - genl_dump_check_consistent(cb, hdr, &nl80211_fam); + genl_dump_check_consistent(cb, hdr); if (nl80211_put_regdom(regdom, msg)) goto nla_put_failure; @@ -7722,7 +7722,7 @@ static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, if (!hdr) return -1; - genl_dump_check_consistent(cb, hdr, &nl80211_fam); + genl_dump_check_consistent(cb, hdr); if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) goto nla_put_failure; |