From d4bc855afd2e1b93bbc94f67e98b8ce867d89f09 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 25 Oct 2019 00:03:11 -0400 Subject: [PATCH] autofs: fix a leak in autofs_expire_indirect() [ Upstream commit 03ad0d703df75c43f78bd72e16124b5b94a95188 ] if the second call of should_expire() in there ends up grabbing and returning a new reference to dentry, we need to drop it before continuing. Signed-off-by: Al Viro Signed-off-by: Sasha Levin --- fs/autofs/expire.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/autofs/expire.c b/fs/autofs/expire.c index 28d9c2b1b3bb..70e9afe589fb 100644 --- a/fs/autofs/expire.c +++ b/fs/autofs/expire.c @@ -501,9 +501,10 @@ static struct dentry *autofs_expire_indirect(struct super_block *sb, */ how &= ~AUTOFS_EXP_LEAVES; found = should_expire(expired, mnt, timeout, how); - if (!found || found != expired) - /* Something has changed, continue */ + if (found != expired) { // something has changed, continue + dput(found); goto next; + } if (expired != dentry) dput(dentry);