Patch "neighbour: fix unaligned access to pneigh_entry" has been added to the 6.1-stable tree

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

    neighbour: fix unaligned access to pneigh_entry

to the 6.1-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:
     neighbour-fix-unaligned-access-to-pneigh_entry.patch
and it can be found in the queue-6.1 subdirectory.

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



commit 91e3af3f7ec6df3c7b7dbb0e5a2535caa71a0a6e
Author: Qingfang DENG <qingfang.deng@xxxxxxxxxxxxxxx>
Date:   Thu Jun 1 09:54:32 2023 +0800

    neighbour: fix unaligned access to pneigh_entry
    
    [ Upstream commit ed779fe4c9b5a20b4ab4fd6f3e19807445bb78c7 ]
    
    After the blamed commit, the member key is longer 4-byte aligned. On
    platforms that do not support unaligned access, e.g., MIPS32R2 with
    unaligned_action set to 1, this will trigger a crash when accessing
    an IPv6 pneigh_entry, as the key is cast to an in6_addr pointer.
    
    Change the type of the key to u32 to make it aligned.
    
    Fixes: 62dd93181aaa ("[IPV6] NDISC: Set per-entry is_router flag in Proxy NA.")
    Signed-off-by: Qingfang DENG <qingfang.deng@xxxxxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230601015432.159066-1-dqfext@xxxxxxxxx
    Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 2f2a6023fb0e5..94a1599824d8f 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -180,7 +180,7 @@ struct pneigh_entry {
 	netdevice_tracker	dev_tracker;
 	u32			flags;
 	u8			protocol;
-	u8			key[];
+	u32			key[];
 };
 
 /*



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