Johannes Berg 48044eb490 netlink: fix netlink_ack() extack race ... It seems that it's possible to toggle NETLINK_F_EXT_ACK through setsockopt() while another thread/CPU is building a message inside netlink_ack(), which could then trigger the WARN_ON()s I added since if it goes from being turned off to being turned on between allocating and filling the message, the skb could end up being too small. Avoid this whole situation by storing the value of this flag in a separate variable and using that throughout the function instead. Fixes: 2d4bc93368 ("netlink: extended ACK reporting") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-10-18 12:22:28 +01:00
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af_netlink.c	netlink: fix netlink_ack() extack race	2017-10-18 12:22:28 +01:00
af_netlink.h	netlink: extended ACK reporting	2017-04-13 13:58:20 -04:00
diag.c	netlink/diag: report flags for netlink sockets	2017-04-05 07:13:56 -07:00
genetlink.c	netlink: pass extended ACK struct where available	2017-04-13 13:58:22 -04:00
Kconfig	netlink: remove mmapped netlink support	2016-02-18 11:42:18 -05:00
Makefile	netlink: Diag core and basic socket info dumping (v2)	2013-03-21 12:38:03 -04:00