linux-hardening - [PATCH 006/141] gfs2: Fix fall-through warnings for Clang

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Date:   Fri, 20 Nov 2020 12:25:03 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Bob Peterson <rpeterso@...hat.com>,
        Andreas Gruenbacher <agruenba@...hat.com>
Cc:     cluster-devel@...hat.com, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: [PATCH 006/141] gfs2: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple
warnings by explicitly adding multiple goto statements instead of just
letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 fs/gfs2/inode.c    | 2 ++
 fs/gfs2/recovery.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 077ccb1b3ccc..9a85214c2505 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -960,6 +960,7 @@ static int gfs2_link(struct dentry *old_dentry, struct inode *dir,
 		break;
 	case 0:
 		error = -EEXIST;
+		goto out_gunlock;
 	default:
 		goto out_gunlock;
 	}
@@ -1500,6 +1501,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
 			break;
 		case 0:
 			error = -EEXIST;
+			goto out_gunlock;
 		default:
 			goto out_gunlock;
 		}
diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c
index c26c68ebd29d..5b2a01d9c463 100644
--- a/fs/gfs2/recovery.c
+++ b/fs/gfs2/recovery.c
@@ -437,6 +437,7 @@ void gfs2_recover_func(struct work_struct *work)
 		case GLR_TRYFAILED:
 			fs_info(sdp, "jid=%u: Busy\n", jd->jd_jid);
 			error = 0;
+			goto fail;
 
 		default:
 			goto fail;
-- 
2.27.0