Patch "inet: shrink struct flowi_common" has been added to the 6.6-stable tree

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

    inet: shrink struct flowi_common

to the 6.6-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:
     inet-shrink-struct-flowi_common.patch
and it can be found in the queue-6.6 subdirectory.

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



commit 276e70d6dc5b22a326a29ece54464b60351ec716
Author: Eric Dumazet <edumazet@xxxxxxxxxx>
Date:   Wed Oct 25 14:10:37 2023 +0000

    inet: shrink struct flowi_common
    
    [ Upstream commit 1726483b79a72e0150734d5367e4a0238bf8fcff ]
    
    I am looking at syzbot reports triggering kernel stack overflows
    involving a cascade of ipvlan devices.
    
    We can save 8 bytes in struct flowi_common.
    
    This patch alone will not fix the issue, but is a start.
    
    Fixes: 24ba14406c5c ("route: Add multipath_hash in flowi_common to make user-define hash")
    Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
    Cc: wenxu <wenxu@xxxxxxxxx>
    Reviewed-by: David Ahern <dsahern@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20231025141037.3448203-1-edumazet@xxxxxxxxxx
    Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/include/net/flow.h b/include/net/flow.h
index 7f0adda3bf2fe..335bbc52171c1 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -40,8 +40,8 @@ struct flowi_common {
 #define FLOWI_FLAG_KNOWN_NH		0x02
 	__u32	flowic_secid;
 	kuid_t  flowic_uid;
-	struct flowi_tunnel flowic_tun_key;
 	__u32		flowic_multipath_hash;
+	struct flowi_tunnel flowic_tun_key;
 };
 
 union flowi_uli {



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