diff options
| author | Geliang Tang <tanggeliang@kylinos.cn> | 2025-02-21 16:43:56 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-02-24 18:23:43 -0800 |
| commit | 63132fb054744e58de61d45a6d4f2a707cdfcfb3 (patch) | |
| tree | 7636cf21e64c32aa24611ba521b25e451dcc83ba | |
| parent | 145dc6cc4abdb3b76eb01a0943a540db2a01ebe6 (diff) | |
mptcp: pm: add a build check for userspace_pm_dump_addr
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>
| -rw-r--r-- | net/mptcp/pm_userspace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 277cf092a870..b69fb5b18130 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -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); |