Patch "IB/core: Fix endianness annotation in rdma_is_multicast_addr()" has been added to the 4.14-stable tree

Patch "IB/core: Fix endianness annotation in rdma_is_multicast_addr()" has been added to the 4.14-stable tree

[gregkh]

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

    IB/core: Fix endianness annotation in rdma_is_multicast_addr()

to the 4.14-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:
     ib-core-fix-endianness-annotation-in-rdma_is_multicast_addr.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon Dec 18 13:29:00 CET 2017
From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Wed, 11 Oct 2017 10:48:43 -0700
Subject: IB/core: Fix endianness annotation in rdma_is_multicast_addr()

From: Bart Van Assche <bart.vanassche@wdc.com>


[ Upstream commit 1c3aea2bc8f0b2e5b57375ead40457ff75a3a2ec ]

Since ipv4_addr is a big endian 32-bit number, annotate it as such.

Fixes: commit be1d325a3358 ("IB/core: Set RoCEv2 MGID according to spec")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/rdma/ib_addr.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/rdma/ib_addr.h
+++ b/include/rdma/ib_addr.h
@@ -306,12 +306,12 @@ static inline void rdma_get_ll_mac(struc
 
 static inline int rdma_is_multicast_addr(struct in6_addr *addr)
 {
-	u32 ipv4_addr;
+	__be32 ipv4_addr;
 
 	if (addr->s6_addr[0] == 0xff)
 		return 1;
 
-	memcpy(&ipv4_addr, addr->s6_addr + 12, 4);
+	ipv4_addr = addr->s6_addr32[3];
 	return (ipv6_addr_v4mapped(addr) && ipv4_is_multicast(ipv4_addr));
 }
 


Patches currently in stable-queue which might be from bart.vanassche@wdc.com are

queue-4.14/ib-core-fix-endianness-annotation-in-rdma_is_multicast_addr.patch
queue-4.14/target-iscsi-detect-conn_cmd_list-corruption-early.patch
queue-4.14/target-iscsi-fix-a-race-condition-in-iscsit_add_reject_from_cmd.patch
queue-4.14/rdma-cma-avoid-triggering-undefined-behavior.patch
queue-4.14/scsi-core-fix-a-scsi_show_rq-null-pointer-dereference.patch
queue-4.14/blk-mq-sched-dispatch-from-scheduler-iff-progress-is-made-in-dispatch.patch