From 43220a61e7b8de21bf7e6742f12ec480552d9d84 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Wed, 17 Nov 2021 09:20:43 -0500 Subject: [PATCH] fs: dlm: fix build with CONFIG_IPV6 disabled [ Upstream commit 1b9beda83e27a0c2cd75d1cb743c297c7b36c844 ] This patch will surround the AF_INET6 case in sk_error_report() of dlm with a #if IS_ENABLED(CONFIG_IPV6). The field sk->sk_v6_daddr is not defined when CONFIG_IPV6 is disabled. If CONFIG_IPV6 is disabled, the socket creation with AF_INET6 should already fail because a runtime check if AF_INET6 is registered. However if there is the possibility that AF_INET6 is set as sk_family the sk_error_report() callback will print then an invalid family type error. Reported-by: kernel test robot Fixes: 4c3d90570bcc ("fs: dlm: don't call kernel_getpeername() in error_report()") Signed-off-by: Alexander Aring Signed-off-by: David Teigland Signed-off-by: Sasha Levin --- fs/dlm/lowcomms.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c index 904855fa2065..68b765369c92 100644 --- a/fs/dlm/lowcomms.c +++ b/fs/dlm/lowcomms.c @@ -491,6 +491,7 @@ static void lowcomms_error_report(struct sock *sk) ntohs(inet->inet_dport), sk->sk_err, sk->sk_err_soft); break; +#if IS_ENABLED(CONFIG_IPV6) case AF_INET6: printk_ratelimited(KERN_ERR "dlm: node %d: socket error " "sending to node %d at %pI6c, " @@ -499,6 +500,7 @@ static void lowcomms_error_report(struct sock *sk) ntohs(inet->inet_dport), sk->sk_err, sk->sk_err_soft); break; +#endif default: printk_ratelimited(KERN_ERR "dlm: node %d: socket error " "invalid socket family %d set, " -- 2.34.1