Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.9 04/13] audit_get_nd(): don't unlock parent too early | Date | Fri, 22 Nov 2019 14:49:49 -0500 |
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From: Al Viro <viro@zeniv.linux.org.uk>
[ Upstream commit 69924b89687a2923e88cc42144aea27868913d0e ]
if the child has been negative and just went positive under us, we want coherent d_is_positive() and ->d_inode. Don't unlock the parent until we'd done that work...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Sasha Levin <sashal@kernel.org> --- kernel/audit_watch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c index f036b6ada6efc..712469a3103ac 100644 --- a/kernel/audit_watch.c +++ b/kernel/audit_watch.c @@ -365,12 +365,12 @@ static int audit_get_nd(struct audit_watch *watch, struct path *parent) struct dentry *d = kern_path_locked(watch->path, parent); if (IS_ERR(d)) return PTR_ERR(d); - inode_unlock(d_backing_inode(parent->dentry)); if (d_is_positive(d)) { /* update watch filter fields */ watch->dev = d->d_sb->s_dev; watch->ino = d_backing_inode(d)->i_ino; } + inode_unlock(d_backing_inode(parent->dentry)); dput(d); return 0; } -- 2.20.1
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