linux-kernel - Re: [PATCH] Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to

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Date:   Fri, 29 Nov 2019 11:28:46 +0100 (CET)
From:   Richard Weinberger <richard@....at>
To:     Joel Stanley <joel@....id.au>
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        linux-mtd <linux-mtd@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>, Hou Tao <houtao1@...wei.com>
Subject: Re: [PATCH] Revert "jffs2: Fix possible null-pointer dereferences
 in jffs2_add_frag_to_fragtree()"

----- Ursprüngliche Mail -----
> Von: "Joel Stanley" <joel@....id.au>
> An: "David Woodhouse" <dwmw2@...radead.org>, "richard" <richard@....at>, "Jia-Ju Bai" <baijiaju1990@...il.com>, "Al
> Viro" <viro@...iv.linux.org.uk>, "OpenBMC Maillist" <openbmc@...ts.ozlabs.org>, "linux-mtd"
> <linux-mtd@...ts.infradead.org>, "linux-kernel" <linux-kernel@...r.kernel.org>
> CC: "stable" <stable@...r.kernel.org>, "Hou Tao" <houtao1@...wei.com>
> Gesendet: Freitag, 29. November 2019 01:19:30
> Betreff: [PATCH] Revert "jffs2: Fix possible null-pointer dereferences in jffs2_add_frag_to_fragtree()"

> This reverts commit f2538f999345405f7d2e1194c0c8efa4e11f7b3a. The patch
> stopped JFFS2 from being able to mount an existing filesystem with the
> following errors:
> 
> jffs2: error: (77) jffs2_build_inode_fragtree: Add node to tree failed -22
> jffs2: error: (77) jffs2_do_read_inode_internal: Failed to build final fragtree
> for inode #5377: error -22
> 
> Fixes: f2538f999345 ("jffs2: Fix possible null-pointer dereferences...")
> Cc: stable@...r.kernel.org
> Suggested-by: Hou Tao <houtao1@...wei.com>
> Signed-off-by: Joel Stanley <joel@....id.au>
> ---
> 5.4 cannot mount (some?) jffs2 filesystems without this fix. Hou pointed
> this out[1] a while back but the fix didn't make it in. It's still
> broken in -next.

queued into -next.

Thanks,
//richard