From: Sasha Levin <sasha.levin@oracle.com>
Date: Sat, 7 Dec 2013 22:26:27 +0000 (-0500)
Subject: net: unix: allow set_peek_off to fail
X-Git-Tag: v3.13-rc4~3^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12663bfc97c8b3fdb292428105dd92d563164050;p=pandora-kernel.git

net: unix: allow set_peek_off to fail

unix_dgram_recvmsg() will hold the readlock of the socket until recv
is complete.

In the same time, we may try to setsockopt(SO_PEEK_OFF) which will hang until
unix_dgram_recvmsg() will complete (which can take a while) without allowing
us to break out of it, triggering a hung task spew.

Instead, allow set_peek_off to fail, this way userspace will not hang.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Acked-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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