| Message ID | 20190313175427.62271-1-nbd@nbd.name (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Johannes Berg |
| Headers | show |
| Series | mac80211: fix unaligned access in mesh table hash function | expand |
diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c index 8822c4f3dc48..0a1148328f19 100644 --- a/net/mac80211/mesh_pathtbl.c +++ b/net/mac80211/mesh_pathtbl.c @@ -23,7 +23,7 @@ static void mesh_path_free_rcu(struct mesh_table *tbl, struct mesh_path *mpath); 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 = {
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 <nbd@nbd.name> --- net/mac80211/mesh_pathtbl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)