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Patch "net: clear sk_err_soft in sk_clone_lock()" has been added to the 4.4-stable tree

PATCH [email protected] 1 participant 1 message Nov 18, 2016

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This is a note to let you know that I've just added the patch titled

net: clear sk_err_soft in sk_clone_lock()

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
net-clear-sk_err_soft-in-sk_clone_lock.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From foo@baz Fri Nov 18 11:09:43 CET 2016

From: Eric Dumazet <[email protected]>
Date: Fri, 28 Oct 2016 13:40:24 -0700
Subject: net: clear sk_err_soft in sk_clone_lock()

From: Eric Dumazet <[email protected]>

[ Upstream commit e551c32d57c88923f99f8f010e89ca7ed0735e83 ]

At accept() time, it is possible the parent has a non zero sk_err_soft, leftover from a prior error.

Make sure we do not leave this value in the child, as it makes future getsockopt(SO_ERROR) calls quite unreliable.

---
 net/core/sock.c |    1 +
 1 file changed, 1 insertion(+)
net/core/sock.c +1 -0
@@ -1562,6 +1562,7 @@ struct sock *sk_clone_lock(const struct
 		}
 
 		newsk->sk_err	   = 0;
+		newsk->sk_err_soft = 0;
 		newsk->sk_priority = 0;
 		newsk->sk_incoming_cpu = raw_smp_processor_id();
 		atomic64_set(&newsk->sk_cookie, 0);

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/net-__skb_flow_dissect-must-cap-its-return-value.patch queue-4.4/tcp-take-care-of-truncations-done-by-sk_filter.patch queue-4.4/net-clear-sk_err_soft-in-sk_clone_lock.patch queue-4.4/net-mangle-zero-checksum-in-skb_checksum_help.patch queue-4.4/ipv6-dccp-fix-out-of-bound-access-in-dccp_v6_err.patch queue-4.4/ipv6-dccp-add-missing-bind_conflict-to-dccp_ipv6_mapped.patch queue-4.4/tcp-fix-potential-memory-corruption.patch queue-4.4/dccp-do-not-send-reset-to-already-closed-sockets.patch queue-4.4/dccp-fix-out-of-bound-access-in-dccp_v4_err.patch queue-4.4/sock-fix-sendmmsg-for-partial-sendmsg.patch