linux-kernel - Re: [PATCH 4.19 026/239] f2fs: fix to do sanity check in is

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Date:   Tue, 1 Feb 2022 20:18:32 +0100
From:   Pavel Machek <pavel@...x.de>
To:     Chao Yu <chao@...nel.org>
Cc:     Pavel Machek <pavel@...x.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Jaegeuk Kim <jaegeuk@...nel.org>
Subject: Re: [PATCH 4.19 026/239] f2fs: fix to do sanity check in is_alive()

Hi!

> Oops, you're right, my bad.
> 
> > 
> > > +++ b/fs/f2fs/gc.c
> > > @@ -589,6 +589,9 @@ static bool is_alive(struct f2fs_sb_info
> > >   		set_sbi_flag(sbi, SBI_NEED_FSCK);
> > >   	}
> > > +	if (f2fs_check_nid_range(sbi, dni->ino))
> > > +		return false;
> > > +
> > >   	*nofs = ofs_of_node(node_page);
> > >   	source_blkaddr = datablock_addr(NULL, node_page, ofs_in_node);
> > >   	f2fs_put_page(node_page, 1);
> > 
> > AFAICT f2fs_put_page() needs to be done in the error path, too.
> > 
> > (Problem seems to exist in mainline, too).
> > 
> > Something like this?
> 
> Could you please send a formal patch to f2fs mailing list for better review?
> 
> Anyway, thanks a lot for the report and the patch!

I'm quite busy with other reviews at the moment. If you could submit a
patch, it would be great, otherwise I'll get to it .. sometime.

Best regards,
									Pavel
									
-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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