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net: hsr: align sup_multicast_addr in struct hsr_priv to u16 boundary

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sup_multicast_addr is passed to ether_addr_equal for address comparison
which casts the address inputs to u16 leading to an unaligned access.
Aligning the sup_multicast_addr to u16 boundary fixes the issue.

Signed-off-by: Andreas Oetken <andreas.oetken@siemens.com>
Link: https://lore.kernel.org/r/20210202090304.2740471-1-ennoerlangen@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Andreas Oetken 2021-02-02 10:03:04 +01:00 committed by Jakub Kicinski
parent 5a4cb54675
commit 6c9f18f294
1 changed files with 4 additions and 1 deletions
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5
net/hsr/hsr_main.h
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@ -217,7 +217,10 @@ struct hsr_priv {
u8 net_id; /* for PRP, it occupies most significant 3 bits
* of lan_id
*/
unsigned char sup_multicast_addr[ETH_ALEN];
unsigned char sup_multicast_addr[ETH_ALEN] __aligned(sizeof(u16));
/* Align to u16 boundary to avoid unaligned access
* in ether_addr_equal
*/
#ifdef CONFIG_DEBUG_FS
struct dentry *node_tbl_root;
#endif