diff mbox series

[mptcp-next,v4,2/7] mptcp: add a build check for userspace_pm_dump_addr

Message ID 477b35468fde94e852135a0c701a8631339d60b4.1737012165.git.tanggeliang@kylinos.cn (mailing list archive)
State New
Headers show
Series BPF path manager, part 3 | expand

Checks

Context Check Description
matttbe/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
matttbe/shellcheck success MPTCP selftests files have not been modified
matttbe/build success Build and static analysis OK
matttbe/KVM_Validation__normal success Success! ✅
matttbe/KVM_Validation__debug success Success! ✅
matttbe/KVM_Validation__btf-normal__only_bpftest_all_ success Success! ✅
matttbe/KVM_Validation__btf-debug__only_bpftest_all_ success Success! ✅

Commit Message

Geliang Tang Jan. 16, 2025, 7:26 a.m. UTC 
From: Geliang Tang <tanggeliang@kylinos.cn>

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.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 net/mptcp/pm_userspace.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index b50462b527bd..540b2080f02b 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -642,6 +642,8 @@  int mptcp_userspace_pm_dump_addr(struct sk_buff *msg,
 	int ret = -EINVAL;
 	struct sock *sk;
 
+	BUILD_BUG_ON(sizeof(struct id_bitmap) > sizeof(cb->ctx));
+
 	bitmap = (struct id_bitmap *)cb->ctx;
 
 	msk = mptcp_userspace_pm_get_sock(info);