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| author | David Howells <dhowells@redhat.com> | 2019-03-21 10:08:08 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-07 18:59:35 +0200 |
| commit | ef1bb2f3c68c6a2262b6a66c57a2ab477b68e34f (patch) | |
| tree | a9ce6cc6b5d8480772c30348a381eb5676ccc8ca | |
| parent | 86fa1c1b3ab11e0a891f301c041c152a2add35e1 (diff) | |
| download | linux-stable-ef1bb2f3c68c6a2262b6a66c57a2ab477b68e34f.tar.gz linux-stable-ef1bb2f3c68c6a2262b6a66c57a2ab477b68e34f.tar.bz2 linux-stable-ef1bb2f3c68c6a2262b6a66c57a2ab477b68e34f.zip | |
hypfs: Fix error number left in struct pointer member
[ Upstream commit b54c64f7adeb241423cd46598f458b5486b0375e ]
In hypfs_fill_super(), if hypfs_create_update_file() fails,
sbi->update_file is left holding an error number. This is passed to
hypfs_kill_super() which doesn't check for this.
Fix this by not setting sbi->update_value until after we've checked for
error.
Fixes: 24bbb1faf3f0 ("[PATCH] s390_hypfs filesystem")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
cc: Heiko Carstens <heiko.carstens@de.ibm.com>
cc: linux-s390@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/s390/hypfs/inode.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index ccad1398abd4..b5cfcad953c2 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -269,7 +269,7 @@ static int hypfs_show_options(struct seq_file *s, struct dentry *root) static int hypfs_fill_super(struct super_block *sb, void *data, int silent) { struct inode *root_inode; - struct dentry *root_dentry; + struct dentry *root_dentry, *update_file; int rc = 0; struct hypfs_sb_info *sbi; @@ -300,9 +300,10 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent) rc = hypfs_diag_create_files(root_dentry); if (rc) return rc; - sbi->update_file = hypfs_create_update_file(root_dentry); - if (IS_ERR(sbi->update_file)) - return PTR_ERR(sbi->update_file); + update_file = hypfs_create_update_file(root_dentry); + if (IS_ERR(update_file)) + return PTR_ERR(update_file); + sbi->update_file = update_file; hypfs_update_update(sb); pr_info("Hypervisor filesystem mounted\n"); return 0; |