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batman-adv: avoid WARN_ON for orig_ifinfo allocation failure

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batadv_orig_ifinfo_new() returns NULL only when its GFP_ATOMIC
allocation fails, which is a normal runtime condition and not a bug.
batadv_v_ogm_forward() already handles this the same way, simply
checking for NULL without a WARN_ON.

Do the same in batadv_iv_ogm_update_seqnos() to avoid a spurious
WARN_ON splat when the allocation fails (e.g. under fault injection).

Fixes: 7351a4822d ("batman-adv: split out router from orig_node")
Reported-by: syzbot+a079f084653164a652d1@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=a079f084653164a652d1
Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
This commit is contained in:
Deepanshu Kartikey 2026-09-13 08:49:06 +05:30 committed by Sven Eckelmann
parent d1807b20d5
commit dfa953ba53
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1 changed files with 1 additions and 1 deletions
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2
net/batman-adv/bat_iv_ogm.c
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@ -1410,7 +1410,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,
return BATADV_NO_DUP;
orig_ifinfo = batadv_orig_ifinfo_new(orig_node, if_outgoing);
if (WARN_ON(!orig_ifinfo)) {
if (!orig_ifinfo) {
batadv_orig_node_put(orig_node);
return 0;
}