Signed-off-by: Xiao Ni <xni@xxxxxxxxxx> --- mdmon.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mdmon.c b/mdmon.c index 5fdb5cdb5a49..b8f71e5db555 100644 --- a/mdmon.c +++ b/mdmon.c @@ -199,7 +199,8 @@ static void try_kill_monitor(pid_t pid, char *devname, int sock) * clearing the non-blocking flag */ fl = fcntl(sock, F_GETFL, 0); fl &= ~O_NONBLOCK; - fcntl(sock, F_SETFL, fl); + if (fcntl(sock, F_SETFL, fl) < 0) + return; n = read(sock, buf, 100); /* If there is I/O going on it might took some time to get to @@ -249,7 +250,10 @@ static int make_control_sock(char *devname) listen(sfd, 10); fl = fcntl(sfd, F_GETFL, 0); fl |= O_NONBLOCK; - fcntl(sfd, F_SETFL, fl); + if (fcntl(sfd, F_SETFL, fl) < 0) { + close(sfd); + return -1; + } return sfd; } -- 2.32.0 (Apple Git-132)