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- From: Felix Fietkau <[email protected]>
- Date: Wed, 13 Mar 2019 18:52:56 +0100
- Subject: [PATCH] mac80211: fix unaligned access in mesh table hash function
- The pointer to the last four bytes of the address is not guaranteed to be
- aligned, so we need to use __get_unaligned_cpu32 here
- Signed-off-by: Felix Fietkau <[email protected]>
- ---
- --- a/net/mac80211/mesh_pathtbl.c
- +++ b/net/mac80211/mesh_pathtbl.c
- @@ -23,7 +23,7 @@ static void mesh_path_free_rcu(struct me
- static u32 mesh_table_hash(const void *addr, u32 len, u32 seed)
- {
- /* Use last four bytes of hw addr as hash index */
- - return jhash_1word(*(u32 *)(addr+2), seed);
- + return jhash_1word(__get_unaligned_cpu32(addr+2), seed);
- }
-
- static const struct rhashtable_params mesh_rht_params = {
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