linux-kernel - Re: [syzbot] memory leak in keyctl_watch

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Message-ID: <1019067.1647862887@warthog.procyon.org.uk>
Date:   Mon, 21 Mar 2022 11:41:27 +0000
From:   David Howells <dhowells@...hat.com>
To:     syzbot <syzbot+6e2de48f06cdb2884bfc@...kaller.appspotmail.com>
Cc:     dhowells@...hat.com, jarkko@...nel.org, jmorris@...ei.org,
        keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org, serge@...lyn.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] memory leak in keyctl_watch_key

free_watch() is missing a kfree() to actually free the watch.

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git c82efd1dfb229d6aa7e08d57d1c41f034d97b1eb