From e37c96c11175dec4f1b49b25180097ecd80c8c8e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 25 Jan 2019 22:43:19 +0100 Subject: [PATCH] net: socket: fix SIOCGIFNAME in compat [ Upstream commit c6c9fee35dc27362b7bac34b2fc9f5b8ace2e22c ] As reported by Robert O'Callahan in https://bugzilla.kernel.org/show_bug.cgi?id=202273 reverting the previous changes in this area broke the SIOCGIFNAME ioctl in compat again (I'd previously fixed it after his previous report of breakage in https://bugzilla.kernel.org/show_bug.cgi?id=199469). This is obviously because I fixed SIOCGIFNAME more or less by accident. Fix it explicitly now by making it pass through the restored compat translation code. Cc: stable@vger.kernel.org Fixes: 4cf808e7ac32 ("kill dev_ifname32()") Reported-by: Robert O'Callahan Signed-off-by: Johannes Berg Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/socket.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/socket.c b/net/socket.c index e74ede56e903..3b954cafd6a9 100644 --- a/net/socket.c +++ b/net/socket.c @@ -3001,6 +3001,7 @@ static int compat_ifreq_ioctl(struct net *net, struct socket *sock, case SIOCGIFTXQLEN: case SIOCGMIIPHY: case SIOCGMIIREG: + case SIOCGIFNAME: if (copy_in_user(uifr32, uifr, sizeof(*uifr32))) err = -EFAULT; break; @@ -3224,6 +3225,7 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, case SIOCSIFTXQLEN: case SIOCBRADDIF: case SIOCBRDELIF: + case SIOCGIFNAME: case SIOCSIFNAME: case SIOCGMIIPHY: case SIOCGMIIREG: @@ -3238,7 +3240,6 @@ static int compat_sock_ioctl_trans(struct file *file, struct socket *sock, case SIOCBONDRELEASE: case SIOCBONDSETHWADDR: case SIOCBONDCHANGEACTIVE: - case SIOCGIFNAME: return sock_do_ioctl(net, sock, cmd, arg); } -- GitLab