From 4404070f6a8cf2c86c76176e4b7221fa6edd5368 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/autofs4/expire.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c index 141f9bc213a3..94a0017c923b 100644 --- a/fs/autofs4/expire.c +++ b/fs/autofs4/expire.c @@ -472,9 +472,10 @@ struct dentry *autofs4_expire_indirect(struct super_block *sb, */ flags &= ~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);