[syzbot ci] Re: net-memcg: Decouple controlled memcg from sk->sk_prot->memory_allocated.

syzbot ci has tested the following series

[v2] net-memcg: Decouple controlled memcg from sk->sk_prot->memory_allocated.
https://lore.kernel.org/all/20250811173116.2829786-1-kuniyu@google.com (local)
* [PATCH v2 net-next 01/12] mptcp: Fix up subflow's memcg when CONFIG_SOCK_CGROUP_DATA=n.
* [PATCH v2 net-next 02/12] mptcp: Use tcp_under_memory_pressure() in mptcp_epollin_ready().
* [PATCH v2 net-next 03/12] tcp: Simplify error path in inet_csk_accept().
* [PATCH v2 net-next 04/12] net: Call trace_sock_exceed_buf_limit() for memcg failure with SK_MEM_RECV.
* [PATCH v2 net-next 05/12] net: Clean up __sk_mem_raise_allocated().
* [PATCH v2 net-next 06/12] net-memcg: Introduce mem_cgroup_from_sk().
* [PATCH v2 net-next 07/12] net-memcg: Introduce mem_cgroup_sk_enabled().
* [PATCH v2 net-next 08/12] net-memcg: Pass struct sock to mem_cgroup_sk_(un)?charge().
* [PATCH v2 net-next 09/12] net-memcg: Pass struct sock to mem_cgroup_sk_under_memory_pressure().
* [PATCH v2 net-next 10/12] net: Define sk_memcg under CONFIG_MEMCG.
* [PATCH v2 net-next 11/12] net-memcg: Store MEMCG_SOCK_ISOLATED in sk->sk_memcg.
* [PATCH v2 net-next 12/12] net-memcg: Decouple controlled memcg from global protocol memory accounting.

and found the following issue:
kernel build error

Full report is available here:
https://ci.syzbot.org/series/6fc666d9-cfec-413c-a98c-75c91ad6c07d

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kernel build error

tree:      net-next
URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net-next.git
base:      37816488247ddddbc3de113c78c83572274b1e2e
arch:      amd64
compiler:  Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7
config:    https://ci.syzbot.org/builds/a5d5d856-2809-4eee-87ca-2cd1630214ae/config

net/tls/tls_device.c:374:8: error: call to undeclared function 'sk_should_enter_memory_pressure'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com

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