ubifs_decompress: cannot decompress 2293 bytes, compressor lzo, error -22

[Richard Weinberger]

----- Ursprüngliche Mail -----
> Did you run the various nand tests besides nandbiterrs? If they all
> pass then maybe Richard will be more helpful than I am...

[...]
 
>> 
>> But I noticed the lzo decompress error is still there.
>> I did  following actions to test.
>> /dev/mtd3 is mounted on /opt using ubifs.
>> tar zcvf /root/opt.tar.gz /opt  (done without error)
>> format /opt.
>> tar zxvf /root/opt.tar.gz -C /

How did you create ubifs?

Does your nand driver pass ubi tests?

>> Then when I run php program which is in opt. I saw dmesg
>> [  118.850000] UBIFS error (ubi0:0 pid 1526): ubifs_decompress: cannot
>> decompress 2293 bytes, compressor lzo, error -22
>> [  118.860000] UBIFS error (ubi0:0 pid 1526): do_readpage: bad data
>> node (block 15, inode 396)
>> [  118.870000] UBIFS error (ubi0:0 pid 1526): do_readpage: cannot read
>> page 15 of inode 396, error -22
>> [  118.880000] UBIFS error (ubi0:0 pid 1526): ubifs_decompress: cannot
>> decompress 2293 bytes, compressor lzo, error -22
>> [  118.900000] UBIFS error (ubi0:0 pid 1526): do_readpage: bad data
>> node (block 15, inode 396)
>> [  118.900000] UBIFS error (ubi0:0 pid 1526): do_readpage: cannot read
>> page 15 of inode 396, error -22
>> [  118.920000] UBIFS error (ubi0:0 pid 1526): ubifs_decompress: cannot
>> decompress 2293 bytes, compressor lzo, error -22
>> [  118.930000] UBIFS error (ubi0:0 pid 1526): do_readpage: bad data
>> node (block 15, inode 396)
>> [  118.940000] UBIFS error (ubi0:0 pid 1526): do_readpage: cannot read
>> page 15 of inode 396, error -22
>> 
>> I removed the ubifs_dump_node call to avoid many dump text. The
>> problem is when I run php program, lots of above logs dumped.
>> But I don't see any effect of the above logs. the program seems running.
>> Is there a possibility the underlying nand driver data is ok, but the
>> lzo compress/decompress code has bugs ?  I am running linux-5.4.y
>> cloned from kernel.org.

Does the problem only happen with lzo?

Please re-test with no compressor enabled (compr=none) and also mount with
the chk_data_crc mount option.

Thanks,
//richard