Bharath Vedartham wrote on Thu, May 23, 2019: > v9fs_cache_session_get_cookie assigns a random cachetag to v9ses->cachetag, > if the cachetag is not assigned previously. > > v9fs_random_cachetag allocates memory to v9ses->cachetag with kmalloc and uses > scnprintf to fill it up with a cachetag. > > But if scnprintf fails, v9ses->cachetag is not freed in the current > code causing a memory leak. > > Fix this by freeing v9ses->cachetag it v9fs_random_cachetag fails. > > This was reported by syzbot, the link to the report is below: > https://syzkaller.appspot.com/bug?id=f012bdf297a7a4c860c38a88b44fbee43fd9bbf3 > > Reported-by: syzbot+3a030a73b6c1e9833...@syzkaller.appspotmail.com > Signed-off-by: Bharath Vedartham <linux.b...@gmail.com>
Thanks! I'm on limited internet right now but will run tests and queue this up tomorrow -- Dominique
