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(parent: a729dc1) | patch
netlink: not trim skb for mmaped socket when dump
authorKen-ichirou MATSUZAWA <chamaken@gmail.com>
Fri, 29 Jan 2016 01:45:50 +0000 (10:45 +0900)
committerDavid S. Miller <davem@davemloft.net>
Sat, 30 Jan 2016 04:25:17 +0000 (20:25 -0800)
commit9a9d83738e02011700b5edc8f9b6581a64384e06
tree71b2557ea8cbafc6f6080614b43f86a15df54b9ctree | snapshot
parenta729dc1c1b312e242564e58bc858fa78fe48de23commit | diff
netlink: not trim skb for mmaped socket when dump

We should not trim skb for mmaped socket since its buf size is fixed
and userspace will read as frame which data equals head. mmaped
socket will not call recvmsg, means max_recvmsg_len is 0,
skb_reserve was not called before commit: cb0692f262fa.

Fixes: cb0692f262fa (netlink: Trim skb to alloc size to avoid MSG_TRUNC)
Signed-off-by: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/netlink/af_netlink.c diff | blob | history
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