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mptcp: pm: add a build check for userspace_pm_dump_addr

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This patch adds a build check for mptcp_userspace_pm_dump_addr() to make
sure there is enough space in 'cb->ctx' to store an address id bitmap.

Just in case info stored in 'cb->ctx' are increased later.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250221-net-next-mptcp-pm-misc-cleanup-3-v1-3-2b70ab1cee79@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2025-02-21 16:43:56 +01:00 committed by Jakub Kicinski
parent 145dc6cc4a
commit 63132fb054
1 changed files with 2 additions and 0 deletions
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2
net/mptcp/pm_userspace.c
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@ -643,6 +643,8 @@ int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,
struct sock *sk;
void *hdr;
BUILD_BUG_ON(sizeof(struct id_bitmap) > sizeof(cb->ctx));
bitmap = (struct id_bitmap *)cb->ctx;
msk = mptcp_userspace_pm_get_sock(info);