Broken ubifs-zstd

Broken ubifs-zstd

[Enrico Scholz]

Hello,

trying to mount a zstd compressed ubifs fails on an iMX6ULL with

| ERROR: UBIFS error (ubi0:0): 9fe6691d: cannot decompress 2612 bytes, compressor zstd, error -22
| ERROR: UBIFS error (ubi0:0): 9fe6692d: cannot decompress 2612 bytes, compressor zstd, error -22
| ERROR: UBIFS error (ubi0:0): 9fe66a65: bad data node (block 0, inode 815)
| ERROR:  magic          0x6101831

(2022.09 and master).


After reverting

| commit b4a9782d4f56333e897dccc35c2c27e2605f6b93
| Author: Ahmad Fatoum <a.fatoum@pengutronix.de>
| Date:   Wed Jul 13 12:09:18 2022 +0200
| 
|     lib: zstd: sync with Linux

it works again (both in Linux 5.15 and barebox).


ubifs was created by recent OpenEmbedded kirkstone with

| MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 2048 --compr=zstd"


Warnings are triggered (after fixing assert()) at

| WARNING: at lib/zstd/decompress/../common/bitstream.h:390/BIT_reloadDStreamFast()!


Is anybody else experiencing these problems?



Enrico

Re: Broken ubifs-zstd

[Ahmad Fatoum]

Hello Enrico,

On 27.09.22 18:21, Enrico Scholz wrote:
> Hello,
> 
> trying to mount a zstd compressed ubifs fails on an iMX6ULL with
> 
> | ERROR: UBIFS error (ubi0:0): 9fe6691d: cannot decompress 2612 bytes, compressor zstd, error -22
> | ERROR: UBIFS error (ubi0:0): 9fe6692d: cannot decompress 2612 bytes, compressor zstd, error -22
> | ERROR: UBIFS error (ubi0:0): 9fe66a65: bad data node (block 0, inode 815)
> | ERROR:  magic          0x6101831
> 
> (2022.09 and master).
> 
> 
> After reverting
> 
> | commit b4a9782d4f56333e897dccc35c2c27e2605f6b93
> | Author: Ahmad Fatoum <a.fatoum@pengutronix.de>
> | Date:   Wed Jul 13 12:09:18 2022 +0200
> | 
> |     lib: zstd: sync with Linux
> 
> it works again (both in Linux 5.15 and barebox).
> 
> 
> ubifs was created by recent OpenEmbedded kirkstone with
> 
> | MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 2048 --compr=zstd"
> 
> 
> Warnings are triggered (after fixing assert()) at
> 
> | WARNING: at lib/zstd/decompress/../common/bitstream.h:390/BIT_reloadDStreamFast()!
> 
> 
> Is anybody else experiencing these problems?


I am afraid, I didn't properly test this with UBIFS..

> 
> 
> 
> Enrico
> 
> 


-- 
Pengutronix e.K.                           |                             |
Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Re: Broken ubifs-zstd

[Info Skymem]

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Skymem team

On Tue, Sep 27, 2022 at 7:47 PM Ahmad Fatoum <a.fatoum@pengutronix.de> wrote:
>
> Hello Enrico,
>
> On 27.09.22 18:21, Enrico Scholz wrote:
> > Hello,
> >
> > trying to mount a zstd compressed ubifs fails on an iMX6ULL with
> >
> > | ERROR: UBIFS error (ubi0:0): 9fe6691d: cannot decompress 2612 bytes, compressor zstd, error -22
> > | ERROR: UBIFS error (ubi0:0): 9fe6692d: cannot decompress 2612 bytes, compressor zstd, error -22
> > | ERROR: UBIFS error (ubi0:0): 9fe66a65: bad data node (block 0, inode 815)
> > | ERROR:  magic          0x6101831
> >
> > (2022.09 and master).
> >
> >
> > After reverting
> >
> > | commit b4a9782d4f56333e897dccc35c2c27e2605f6b93
> > | Author: Ahmad Fatoum <a.fatoum@pengutronix.de>
> > | Date:   Wed Jul 13 12:09:18 2022 +0200
> > |
> > |     lib: zstd: sync with Linux
> >
> > it works again (both in Linux 5.15 and barebox).
> >
> >
> > ubifs was created by recent OpenEmbedded kirkstone with
> >
> > | MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 2048 --compr=zstd"
> >
> >
> > Warnings are triggered (after fixing assert()) at
> >
> > | WARNING: at lib/zstd/decompress/../common/bitstream.h:390/BIT_reloadDStreamFast()!
> >
> >
> > Is anybody else experiencing these problems?
>
>
> I am afraid, I didn't properly test this with UBIFS..
>
> >
> >
> >
> > Enrico
> >
> >
>
>
> --
> Pengutronix e.K.                           |                             |
> Steuerwalder Str. 21                       | http://www.pengutronix.de/  |
> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
> Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
>