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| author | Joseph Qi <joseph.qi@linux.alibaba.com> | 2022-03-16 16:15:09 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-23 09:10:44 +0100 |
| commit | 7869543b1542ae0f9dbaf6004ea1218748b66362 (patch) | |
| tree | b7fa7642ae10992cc1f185035b8ae58933abce3d /fs | |
| parent | a8e32bbb96c25b7ab29b1894dcd45e0b3b08fd9d (diff) | |
| download | linux-stable-7869543b1542ae0f9dbaf6004ea1218748b66362.tar.gz linux-stable-7869543b1542ae0f9dbaf6004ea1218748b66362.tar.bz2 linux-stable-7869543b1542ae0f9dbaf6004ea1218748b66362.zip | |
ocfs2: fix crash when initialize filecheck kobj fails
commit 7b0b1332cfdb94489836b67d088a779699f8e47e upstream.
Once s_root is set, genric_shutdown_super() will be called if
fill_super() fails. That means, we will call ocfs2_dismount_volume()
twice in such case, which can lead to kernel crash.
Fix this issue by initializing filecheck kobj before setting s_root.
Link: https://lkml.kernel.org/r/20220310081930.86305-1-joseph.qi@linux.alibaba.com
Fixes: 5f483c4abb50 ("ocfs2: add kobject for online file check")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ocfs2/super.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index b5aa60430a6a..7a08053d95c2 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1150,17 +1150,6 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) goto read_super_error; } - root = d_make_root(inode); - if (!root) { - status = -ENOMEM; - mlog_errno(status); - goto read_super_error; - } - - sb->s_root = root; - - ocfs2_complete_mount_recovery(osb); - osb->osb_dev_kset = kset_create_and_add(sb->s_id, NULL, &ocfs2_kset->kobj); if (!osb->osb_dev_kset) { @@ -1178,6 +1167,17 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent) goto read_super_error; } + root = d_make_root(inode); + if (!root) { + status = -ENOMEM; + mlog_errno(status); + goto read_super_error; + } + + sb->s_root = root; + + ocfs2_complete_mount_recovery(osb); + if (ocfs2_mount_local(osb)) snprintf(nodestr, sizeof(nodestr), "local"); else |