Re: [Bug] mtd: rawnand: gpmi

From: Sean Nyekjaer <sean@geanix.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: mkl@pengutronix.de, linux-mtd@lists.infradead.org,
	"Martin Hundebøll" <martin@geanix.com>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>
Subject: Re: [Bug] mtd: rawnand: gpmi
Date: Mon, 23 Sep 2019 12:37:52 +0200	[thread overview]
Message-ID: <965e4192-26de-f654-c41f-e6420b008dc5@geanix.com> (raw)
In-Reply-To: <20190920091726.qitfnktswgvpqxj5@pengutronix.de>

On 20/09/2019 11.17, Sascha Hauer wrote:
> I don't think that U-Boot is corrupting the table. Apparently
> ef347c0cfd619a925 introduces a unwanted change in the page layout of the
> NAND. I would expect that with the known good kernel you have a bbt
> written by either the Kernel or U-Boot, doesn't matter, both parties can
> read it. Once you start the broken Kernel the kernel can no longer read
> the table, re-writes it, can now read it itself, but U-Boot no longer
> can read it, then re-writes it with the effect that Linux re-writes it
> again.
> 
> I don't know how the differences look, you have to nail that down
> yourself by systematically using nandwrite and nandread, maybe with or
> without oob. Once you found the differences I can help you in finding
> the issue in my patch. Alternatively I can offer you to have a look
> myself, but you would have to provide me a board, either physically
> by mail or virtually by ssh.
> 
> Sascha
> 

We are using suspend (to ram).
And it seems that it's suspend that triggers the UBI errors.

I'm getting this in the log:
[  661.348790] gpmi_reset_block(5cbb0f7e): module reset timeout
[  661.348889] gpmi-nand 1806000.gpmi-nand: Error setting GPMI : -110
[  661.348928] PM: dpm_run_callback(): platform_pm_resume+0x0/0x44 
returns -110
[  661.348961] PM: Device 1806000.gpmi-nand failed to resume: error -110

[  686.595724] ubi0 error: ubi_io_read: error -74 (ECC error) while 
reading 188 bytes from PEB 949:247208, read 188 bytes
[  686.607767] UBIFS error (ubi0:8 pid 284): ubifs_read_node: bad node 
type (0 but expected 9)
[  686.616592] UBIFS error (ubi0:8 pid 284): ubifs_read_node: bad node 
at LEB 204:239016, LEB mapping status 1
[  686.626462] Not a node, first 24 bytes:
[  686.626482] 00000000: 00 5e 04 00 00 2d 05 00 20 bb 00 00 00 a0 44 02 
00 bc 00 00 00 5e 04 00                          .^...-.. .....D......^..
[  686.645435] UBIFS error (ubi0:8 pid 284): ubifs_evict_inode: can't 
delete inode 1118, error -22
[  686.655449] UBIFS error (ubi0:8 pid 252): make_reservation: cannot 
reserve 328 bytes in jhead 1, error -30
[  716.895990] UBIFS error (ubi0:8 pid 272): make_reservation: cannot 
reserve 160 bytes in jhead 1, error -30
[  716.905996] UBIFS error (ubi0:8 pid 272): ubifs_write_inode: can't 
write inode 1119, error -30

/Sean

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