When trying to adjust receive buffer size, the second call to setsockopt() was not error-checked.
Signed-off-by: Phil Sutter <[email protected]> --- src/mnl.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/src/mnl.c b/src/mnl.c index 2be8ca14e50da..0d9b7ffc85c76 100644 --- a/src/mnl.c +++ b/src/mnl.c @@ -1425,8 +1425,11 @@ int mnl_nft_event_listener(struct mnl_socket *nf_sock, unsigned int debug_mask, */ ret = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &bufsiz, sizeof(socklen_t)); - nft_print(octx, "# Cannot set up netlink socket buffer size to %u bytes, falling back to %u bytes\n", - NFTABLES_NLEVENT_BUFSIZ, bufsiz); + if (ret < 0) + nft_print(octx, "# Cannot increase netlink socket buffer size, expect message loss\n"); + else + nft_print(octx, "# Cannot set up netlink socket buffer size to %u bytes, falling back to %u bytes\n", + NFTABLES_NLEVENT_BUFSIZ, bufsiz); } while (1) { -- 2.19.0
