The imx6ull ubifs reports an sqnum error

[mark123]

Hello, nxp engineers

At present, our device will report detected log errors after running for a period of time, and the phenomenon is as follows. I don't know what caused it, bit flip or ecc error correction algorithm problem? Then I searched for this information, it seems that this problem is universal, said that only update the nand driver can be solved? Do you have a patch for 4.1.15?

Kernel version: L4.1.15

Nand: MT29F2G08ABAEAWP

UBIFS (ubi0:0): recovery needed

UBIFS error (ubi0:0 pid 1): replay_log_leb: bad sqnum 266064, commit sqnum 266897

UBIFS error (ubi0:0 pid 1): replay_log_leb: log error detected while replaying the log at LEB 4:2048

  magic          0x6101831

crc            0x8667d5fb

  node_type      7 (master node)

  group_type     0 (no node group)

  sqnum          266064

  len            512

  highest_inum   7018

  commit number  5900

  flags          0x3

  log_lnum       5

  root_lnum      1067

  root_offs      113648

  root_len       68

gc_lnum        539

ihead_lnum     1067

  ihead_offs     114688

  index_size     1018344

  lpt_lnum       9

  lpt_offs       86109

  nhead_lnum     9

  nhead_offs     88064

  ltab_lnum      9

  ltab_offs      86016

  lsave_lnum     0

  lsave_offs     0

  lscan_lnum     1065

  leb_cnt        1868

  empty_lebs     1028

  idx_lebs       186

  total_free     130656256

  total_dirty    39837896

  total_used     64154960

  total_dead     442368

  total_dark     7469664

 List of all partitions:

 0100           65536 ram0  (driver?)

 0101           65536 ram1  (driver?)

 0102           65536 ram2  (driver?)

 0103           65536 ram3  (driver?)

 0104           65536 ram4  (driver?)

 0105           65536 ram5  (driver?)

 0106           65536 ram6  (driver?)

 0107           65536 ram7  (driver?)

 0108           65536 ram8  (driver?)

 0109           65536 ram9  (driver?)

 010a           65536 ram10  (driver?)

010b           65536 ram11  (driver?)

 010c           65536 ram12  (driver?)

010d           65536 ram13  (driver?)

 010e           65536 ram14  (driver?)

 010f           65536 ram15  (driver?)

1f00            5120 mtdblock0  (driver?)

1f01            1024 mtdblock1  (driver?)

1f02           10240 mtdblock2  (driver?)

1f03            1024 mtdblock3  (driver?)

1f04          244736 mtdblock4  (driver?)

No filesystem could mount root, tried:  ubifs

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

 ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

[Zhiming_Liu]

Hi @mark123 

Please refer this patch:

https://patchwork.ozlabs.org/project/linux-mtd/patch/1417461159-2972-1-git-send-email-boris.brezillo...

Best Regards
Zhiming