Subject: linux-next: build failure after merge of the ipsec-next tree

From: Mark Brown <[email-masked]>
Date: Mon, 26 Jan 2026 17:33:22 +0000

Hi all,

After merging the ipsec-next tree, today's linux-next build (arm64
defconfig) failed like this:

/tmp/next/build/net/core/sysctl_net_core.c: In function 'proc_do_rss_key':
/tmp/next/build/net/core/sysctl_net_core.c:333:23: error: implicit declaration of function 'hex_byte_pack' [-Wimplicit-function-declaration]
  333 |                 pos = hex_byte_pack(pos, netdev_rss_key[i]);
      |                       ^~~~~~~~~~~~~
/tmp/next/build/net/core/sysctl_net_core.c:333:21: error: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
  333 |                 pos = hex_byte_pack(pos, netdev_rss_key[i]);
      |                     ^

Caused by commit

   37b0ea8fef56c (net: expand NETDEV_RSS_KEY_LEN to 256 bytes)

I have used the tree from 20260123 instead.