neighbour: fix unaligned access to pneigh_entry

commit ed779fe4c9 upstream.

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: 62dd93181a ("[IPV6] NDISC: Set per-entry is_router flag in Proxy NA.")
Signed-off-by: Qingfang DENG <qingfang.deng@siflower.com.cn>
Link: https://lore.kernel.org/r/20230601015432.159066-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This commit is contained in:

Qingfang DENG

2023-06-01 09:54:32 +08:00

committed by

Greg Kroah-Hartman

parent f6141cbc2b

commit f451d1a013

1 changed files with 1 additions and 1 deletions

									
										include/net/neighbour.h
									
		+1
		-1
	
												View File
												
				@@ -172,7 +172,7 @@ struct pneigh_entry {

					possible_net_t		net;

					struct net_device	*dev;

					u8			flags;

					u8			key[0];

					u32			key[0];

				};

				/*