Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=19bb3506e27096eea5f7b71b89621ad1203ed318 Commit: 19bb3506e27096eea5f7b71b89621ad1203ed318 Parent: 0304ff8a2d5f57defb011c7f261b4c1b3eff96d1 Author: Evgeny Kravtsunov <[EMAIL PROTECTED]> AuthorDate: Tue Apr 17 12:31:24 2007 -0700 Committer: David S. Miller <[EMAIL PROTECTED]> CommitDate: Tue Apr 17 14:16:00 2007 -0700
[BRIDGE]: Unaligned access when comparing ethernet addresses compare_ether_addr() implicitly requires that the addresses passed are 2-bytes aligned in memory. This is not true for br_stp_change_bridge_id() and br_stp_recalculate_bridge_id() in which one of the addresses is unsigned char *, and thus may not be 2-bytes aligned. Signed-off-by: Evgeny Kravtsunov <[EMAIL PROTECTED]> Signed-off-by: Kirill Korotaev <[EMAIL PROTECTED]> Signed-off-by: Pavel Emelianov <[EMAIL PROTECTED]> --- net/bridge/br_stp_if.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-) diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c index 58d13f2..a285897 100644 --- a/net/bridge/br_stp_if.c +++ b/net/bridge/br_stp_if.c @@ -126,7 +126,9 @@ void br_stp_disable_port(struct net_bridge_port *p) /* called under bridge lock */ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr) { - unsigned char oldaddr[6]; + /* should be aligned on 2 bytes for compare_ether_addr() */ + unsigned short oldaddr_aligned[ETH_ALEN >> 1]; + unsigned char *oldaddr = (unsigned char *)oldaddr_aligned; struct net_bridge_port *p; int wasroot; @@ -151,11 +153,14 @@ void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr) br_become_root_bridge(br); } -static const unsigned char br_mac_zero[6]; +/* should be aligned on 2 bytes for compare_ether_addr() */ +static const unsigned short br_mac_zero_aligned[ETH_ALEN >> 1]; /* called under bridge lock */ void br_stp_recalculate_bridge_id(struct net_bridge *br) { + const unsigned char *br_mac_zero = + (const unsigned char *)br_mac_zero_aligned; const unsigned char *addr = br_mac_zero; struct net_bridge_port *p; - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html