mtd: nand: atmel: probe of Spansion S34ML02G1 fails

Wed Jul 26 01:15:13 PDT 2017

Hello,

Am Dienstag, 25. Juli 2017, 20:54:06 schrieb Boris Brezillon:
> Can you try with the following fix?

I tried. The initialization seems to be successful now, at least there 
are no error messages from the nand driver anymore. But later on UBI 
fails, which is strange because it does not fail with earlier kernels. 
Kernel command line is this:

console=ttyS0,115200 panic=1 
mtdparts=atmel_nand:128k(bootstrap)ro,512k(uboot)ro,256k(env1),256k(env2),3M(kernel_rec)ro,768k(fpga_rec)ro,47M(rootfs_rec)ro,3M(kernel),768k(fpga),200M(filesystem),128k(rootfs_update_script),-(free) 
ubi.mtd=rootfs_rec ubi.mtd=filesystem root=ubi1:rootfs1 rootfstype=ubifs

UBI/UBIFS kernel config is like this:

CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MTD_UBI_BEB_LIMIT=50
# CONFIG_MTD_UBI_FASTMAP is not set
# CONFIG_MTD_UBI_GLUEBI is not set
# CONFIG_MTD_UBI_BLOCK is not set

CONFIG_UBIFS_FS=y
CONFIG_UBIFS_FS_ADVANCED_COMPR=y
CONFIG_UBIFS_FS_LZO=y
CONFIG_UBIFS_FS_ZLIB=y
# CONFIG_UBIFS_ATIME_SUPPORT is not set
# CONFIG_UBIFS_FS_ENCRYPTION is not set
CONFIG_UBIFS_FS_SECURITY=y

According to the datasheet the NAND flash (Spansion® S34ML02G1) supports 
1-bit ECC. According to the SAM9G20 datasheet the SMC supports ECC-
enabled NAND flash, but as far as I could see the ECC controller of the 
SAM9G20 has no driver and is not used, but ECC is computed in software?

The nand node in my dts file is like the one in 
arch/arm/boot/dts/at91sam9g20ek_common.dtsi (with different partitions).

See the console output:

nand: device found, Manufacturer ID: 0x01, Chip ID: 0xda
nand: AMD/Spansion S34ML02G1
nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
12 cmdlinepart partitions found on MTD device atmel_nand
Creating 12 MTD partitions on "atmel_nand":
0x000000000000-0x000000020000 : "bootstrap"
0x000000020000-0x0000000a0000 : "uboot"
0x0000000a0000-0x0000000e0000 : "env1"
0x0000000e0000-0x000000120000 : "env2"
0x000000120000-0x000000420000 : "kernel_rec"
0x000000420000-0x0000004e0000 : "fpga_rec"
0x0000004e0000-0x0000033e0000 : "rootfs_rec"
0x0000033e0000-0x0000036e0000 : "kernel"
0x0000036e0000-0x0000037a0000 : "fpga"
0x0000037a0000-0x00000ffa0000 : "filesystem"
0x00000ffa0000-0x00000ffc0000 : "rootfs_update_script"
0x00000ffc0000-0x000010000000 : "free"
NET: Registered protocol family 17
ubi0: attaching mtd6
ubi0: MTD device 6 is write-protected, attach in read-only mode
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 1:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 1:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 1
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 2:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 2:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 2:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 2:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 2
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 2
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 3:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 3
ubi0: fixable bit-flip detected at PEB 3
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 4:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 4:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 4:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 4
ubi0: fixable bit-flip detected at PEB 4
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 4
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 5:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 5:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 5:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 5
ubi0: fixable bit-flip detected at PEB 5
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 5
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 6:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 6:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 6:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 6:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 6
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 7:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 7:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 7:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 7:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 7
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 7
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 8:512, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0259200>] 
(ubi_io_read_vid_hdr+0xac/0x32c)
[<c0259200>] (ubi_io_read_vid_hdr) from [<c025f3d8>] 
(scan_all.constprop.0+0x208/0xb80)
[<c025f3d8>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 9
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 9:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 9:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 9:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 9:512, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0259200>] 
(ubi_io_read_vid_hdr+0xac/0x32c)
[<c0259200>] (ubi_io_read_vid_hdr) from [<c025f3d8>] 
(scan_all.constprop.0+0x208/0xb80)
[<c025f3d8>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 129024 
bytes from PEB 9:2048, read only 129024 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 129024 
bytes from PEB 9:2048, read only 129024 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 129024 
bytes from PEB 9:2048, read only 129024 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 129024 
bytes from PEB 9:2048, read 129024 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c025f468>] 
(scan_all.constprop.0+0x298/0xb80)
[<c025f468>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 10:512, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 10
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 10
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 11:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 11:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 11:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 11:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 11:512, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 11
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 11
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 12:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 12:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 12:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 12:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 12
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 13:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 13:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 13:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 13:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 13
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 13
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 14:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 14:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 14:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 14:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 14
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 14
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 15:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 15:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 15:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 15:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 15
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 15
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 16:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 16:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 16:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 16:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
ubi0: fixable bit-flip detected at PEB 16
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 17:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 17:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 17:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 17
ubi0: fixable bit-flip detected at PEB 17
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 18:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 18:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 18:0, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 18:0, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0258ecc>] 
(ubi_io_read_ec_hdr+0xa4/0x32c)
[<c0258ecc>] (ubi_io_read_ec_hdr) from [<c025f320>] 
(scan_all.constprop.0+0x150/0xb80)
[<c025f320>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 18:512, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 18
ubi0 warning: scan_all.constprop.0: valid VID header but corrupted EC 
header at PEB 18
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 19:0, read only 64 bytes, retry
ubi0: fixable bit-flip detected at PEB 19
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 19:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 19:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 19:512, read only 64 bytes, retry
__nand_correct_data: uncorrectable ECC error
ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes 
from PEB 19:512, read 64 bytes
CPU: 0 PID: 1 Comm: swapper Not tainted 4.13.0-rc2+ #13
Hardware name: Atmel AT91SAM9
[<c000f4b8>] (unwind_backtrace) from [<c000d5b4>] (show_stack+0x10/0x14)
[<c000d5b4>] (show_stack) from [<c0258b4c>] (ubi_io_read+0x214/0x328)
[<c0258b4c>] (ubi_io_read) from [<c0259200>] 
(ubi_io_read_vid_hdr+0xac/0x32c)
[<c0259200>] (ubi_io_read_vid_hdr) from [<c025f3d8>] 
(scan_all.constprop.0+0x208/0xb80)
[<c025f3d8>] (scan_all.constprop.0) from [<c0260084>] 
(ubi_attach+0xa0/0x194)
[<c0260084>] (ubi_attach) from [<c02524f8>] 
(ubi_attach_mtd_dev+0x1f4/0x698)
[<c02524f8>] (ubi_attach_mtd_dev) from [<c04d1384>] 
(ubi_init+0x138/0x1d8)
[<c04d1384>] (ubi_init) from [<c00096d8>] (do_one_initcall+0xa8/0x158)
[<c00096d8>] (do_one_initcall) from [<c04b2cf4>] 
(kernel_init_freeable+0x104/0x1c0)
[<c04b2cf4>] (kernel_init_freeable) from [<c0356a94>] 
(kernel_init+0x8/0xf0)
[<c0356a94>] (kernel_init) from [<c000a290>] (ret_from_fork+0x14/0x24)
__nand_correct_data: uncorrectable ECC error
__nand_correct_data: uncorrectable ECC error
__nand_correct_data: uncorrectable ECC error
__nand_correct_data: uncorrectable ECC error
__nand_correct_data: uncorrectable ECC error

[…]

This goes on forever until I cut power, just interrupted by messages 
like this every now and then:

ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 129024 
bytes from PEB 19:2048, read only 129024 bytes, retry

Greets
Alex