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ipv6: annotate data-races around devconf->rpl_seg_enabled

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devconf->rpl_seg_enabled can be changed concurrently from
/proc/sys/net/ipv6/conf, annotate lockless reads on it.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Link: https://patch.msgid.link/20250901123726.1972881-2-yuehaibing@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Yue Haibing 2025-09-01 20:37:25 +08:00 • committed by Jakub Kicinski
parent 41ec374bde
commit 3a5f55500f
1 changed files with 2 additions and 4 deletions
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6
net/ipv6/exthdrs.c
View file

@ -494,10 +494,8 @@ static int ipv6_rpl_srh_rcv(struct sk_buff *skb)
idev = __in6_dev_get(skb->dev);
accept_rpl_seg = net->ipv6.devconf_all->rpl_seg_enabled;
if (accept_rpl_seg > idev->cnf.rpl_seg_enabled)
accept_rpl_seg = idev->cnf.rpl_seg_enabled;
accept_rpl_seg = min(READ_ONCE(net->ipv6.devconf_all->rpl_seg_enabled),
READ_ONCE(idev->cnf.rpl_seg_enabled));
if (!accept_rpl_seg) {
kfree_skb(skb);
return -1;