linux-kernel - Re: [reiserfs?] [squashfs?] BUG: Dentry still in use in unmount

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Date: Sun, 17 Dec 2023 11:39:35 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+8608bb4553edb8c78f41@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [reiserfs?] [squashfs?] BUG: Dentry still in use in unmount

please test BUG: Dentry still in use in unmount

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3bd7d7488169
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 4382881b0709..c366b0c6fad2 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -808,6 +808,7 @@ static int ovl_copy_up_workdir(struct ovl_copy_up_ctx *c)
 	return err;
 
 cleanup:
+	ovl_end_write(c->dentry);
 	ovl_cleanup(ofs, wdir, temp);
 	dput(temp);
 	goto unlock;