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[NETLINK]: Do precise netlink message allocations where possible

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Account for the netlink message header size directly in nlmsg_new()
instead of relying on the caller calculate it correctly.

Replaces error handling of message construction functions when
constructing notifications with bug traps since a failure implies
a bug in calculating the size of the skb.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2006-11-10 14:10:15 -08:00 • committed by David S. Miller
commit 339bf98ffc
1 changed files with 233 additions and 107 deletions
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3
kernel/taskstats.c
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@ -77,8 +77,7 @@ static int prepare_reply(struct genl_info *info, u8 cmd, struct sk_buff **skbp,
/*
* If new attributes are added, please revisit this allocation
*/
size = nlmsg_total_size(genlmsg_total_size(size));
skb = nlmsg_new(size, GFP_KERNEL);
skb = nlmsg_new(genlmsg_total_size(size), GFP_KERNEL);
if (!skb)
return -ENOMEM;