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From:   Pintu Agarwal <pintu.ping@gmail.com>
Date:   Tue, 15 Jun 2021 15:31:01 +0530
Message-ID: <CAOuPNLio33vrJ_1am-hbgMunUJereC5GOy3QVU6PDDk-3QeneA@mail.gmail.com>
Subject: Re: Kernel 4.14: SQUASHFS error: xz decompression failed, data
 probably corrupt
To:     Florian Fainelli <f.fainelli@gmail.com>
Cc:     open list <linux-kernel@vger.kernel.org>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        linux-mtd <linux-mtd@lists.infradead.org>,
        Phillip Lougher <phillip@squashfs.org.uk>,
        Sean Nyekjaer <sean@geanix.com>
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On Tue, 15 Jun 2021 at 10:42, Pintu Agarwal <pintu.ping@gmail.com> wrote:
>
> On Tue, 15 Jun 2021 at 03:53, Florian Fainelli <f.fainelli@gmail.com> wrote:
> >
> >
> >
> > On 6/14/2021 3:39 AM, Pintu Agarwal wrote:
> > > Hi All,
> > >
> > > With Kernel 4.14 we are getting squashfs error during bootup resulting
> > > in kernel panic.
> > > The details are below:
> > > Device: ARM-32 board with Cortex-A7 (Single Core)
> > > Storage: NAND Flash 512MiB
> > > Kernel Version: 4.14.170 (maybe with some Linaro updates)
> > > File system: Simple busybox with systemd (without Android)
> > > File system type: UBIFS + SQUASHFS
> > > UBI Volumes supported: rootfs (ro), others (rw)
> > > -------------------
> > >
> > > When we try to flash the UBI images and then try to boot the device,
> > > we observe the below errors:
> >
> > Someone in The OpenWrt community seems to have run into this problem,
> > possibly on the exact same QCOM SoC than you and came up with the following:
> >
> > https://forum.openwrt.org/t/patch-squashfs-data-probably-corrupt/70480
> >
> Thanks!
> Yes I have already seen this and even one more.
> https://www.programmersought.com/article/31513579159/
>
> But I think these changes are not yet in the mainline right ?
>
> So, I wanted to know which are the exact patches which are already
> accepted in mainline ?
> Or, is it already mainlined ?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/fs/squashfs?h=next-20210611
> From here, I see that we are only till this:
> ==> 2018-08-02: Squashfs: Compute expected length from inode size
> rather than block length
>
@Phillip Lougher, do you have any suggestions/comments on these errors ?
Why do you think these errors occur ?
Also, I noticed that even if these errors occur, the device may boot normally.
However, for some people it does not boot at all.

Thanks,
Pintu