| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.14 72/79] fib_rules: Fix dump_rules() not to exit early | Date | Sat, 17 Oct 2015 19:06:04 -0700 |
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3.14-stable review patch. If anyone has any objections, please let me know.
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From: Roland Dreier <roland@purestorage.com>
Backports of 41fc014332d9 ("fib_rules: fix fib rule dumps across multiple skbs") introduced a regression in "ip rule show" - it ends up dumping the first rule over and over and never exiting, because 3.19 and earlier are missing commit 053c095a82cf ("netlink: make nlmsg_end() and genlmsg_end() void"), so fib_nl_fill_rule() ends up returning skb->len (i.e. > 0) in the success case.
Fix this by checking the return code for < 0 instead of != 0.
Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- net/core/fib_rules.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/fib_rules.c +++ b/net/core/fib_rules.c @@ -631,7 +631,7 @@ static int dump_rules(struct sk_buff *sk err = fib_nl_fill_rule(skb, rule, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, RTM_NEWRULE, NLM_F_MULTI, ops); - if (err) + if (err < 0) break; skip: idx++;
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