UBIFS recovery fail after power-cut

[b w]

Hello list,
        Using kernel 2.6.32 (which have already apply the latest UBIFS
and UBI patches),nor flash.
UBIFS mount fail fail after an power cut due to recovery . Recovery
failed because after power cut ,the flash image is like this:
02ab3eb0h: 00 00 00 00 00 00 00 00 00 E6 0C 00 11 00 00 00
02ab3ec0h: 31 18 10 06 04 80 DE AF FF FF FF FF FF FF FF FF
02ab3ed0h: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
02ab3ee0h: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
02ab3ef0h: 05 89 AB CD EF 89 AB CD EF 20 00 00 00 00 00 00
02ab3f00h: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
First,when ubifs_recover_leb call ubifs_scan_a_node,and found that in
0x02ab3ec8h
had a bad node type,so ubifs_scan_a_node return SCANNED_A_CORRUPT_NODE.
Then in ubifs_recover_leb,when call no_more_nodes this function return
0 (which i think
should be return 1).At last recovery failed,so mount failed too.

The flash device is S29GL01GP12TFI01. I try to reproduce the flash
image by power down,but
not success yet. I reproduce this problem using the flash image which
i dumped after the first problem happened.
I do not know how can reproduce this problem by power down. And also i
know is that this flash internal buffer size is 64 bytes.

I think in this situation, function no_more_nodes not work
correctly,we should fix it.

error log:
[   35.290516] UBIFS error (pid 1110): ubifs_check_node: bad node type 255
[   35.294516] UBIFS error (pid 1110): ubifs_check_node: bad node at
LEB 388:81472
[   35.302725] Call Trace:
[   35.302725]  [<c1156ec3>] ubifs_check_node+0x21d/0x22e
[   35.307600]  [<c115d6db>] ubifs_scan_a_node+0x139/0x297
[   35.311600]  [<c116d894>] ubifs_recover_leb+0x12a/0x63e
[   35.311600]  [<c108fdb4>] ? __slab_free+0x3d/0x1db
[   35.315337]  [<c115e60e>] ubifs_replay_journal+0x7f5/0x14b7
[   35.319337]  [<c1169a1c>] ? ubifs_lpt_init+0x528/0x8b2
[   35.319337]  [<c1153471>] ubifs_fill_super+0xb31/0x198b
[   35.323828]  [<c11553bc>] ubifs_get_sb+0x40f/0x493
[   35.327828]  [<c10952d9>] vfs_kern_mount+0x80/0x115
[   35.330298]  [<c1095415>] do_kern_mount+0x32/0xbe
[   35.330298]  [<c10a55e0>] do_mount+0x550/0x5af
[   35.333543]  [<c1399518>] ? do_page_fault+0x0/0x26e
[   35.333543]  [<c107c544>] ? strndup_user+0x40/0x5f
[   35.338891]  [<c10a56a0>] sys_mount+0x61/0x8f
[   35.342891]  [<c1002b64>] sysenter_do_call+0x12/0x22
[   35.345633] found corruption - -3
[   35.345633] UBIFS error (pid 1110): ubifs_check_node: bad node type 255
[   35.350654] UBIFS error (pid 1110): ubifs_check_node: bad node at
LEB 388:81472
[   35.359341] Call Trace:
[   35.359341]  [<c1156ec3>] ubifs_check_node+0x21d/0x22e
[   35.363515]  [<c116d99b>] ubifs_recover_leb+0x231/0x63e
[   35.367515]  [<c108fdb4>] ? __slab_free+0x3d/0x1db
[   35.367515]  [<c115e60e>] ubifs_replay_journal+0x7f5/0x14b7
[   35.371324]  [<c1169a1c>] ? ubifs_lpt_init+0x528/0x8b2
[   35.375324]  [<c1153471>] ubifs_fill_super+0xb31/0x198b
[   35.375324]  [<c11553bc>] ubifs_get_sb+0x40f/0x493
[   35.379321]  [<c10952d9>] vfs_kern_mount+0x80/0x115
[   35.383321]  [<c1095415>] do_kern_mount+0x32/0xbe
[   35.383321]  [<c10a55e0>] do_mount+0x550/0x5af
[   35.386657]  [<c1399518>] ? do_page_fault+0x0/0x26e
[   35.390657]  [<c107c544>] ? strndup_user+0x40/0x5f
[   35.390657]  [<c10a56a0>] sys_mount+0x61/0x8f
[   35.393861]  [<c1002b64>] sysenter_do_call+0x12/0x22
[   35.393861] unexpected bad common header at 388:81472
[   35.398954] UBIFS error (pid 1110): ubifs_recover_leb: corruptio -3
[   35.407615] UBIFS error (pid 1110): ubifs_check_node: bad node type 255
[   35.409498] UBIFS error (pid 1110): ubifs_check_node: bad node at
LEB 388:81472
[   35.417522] Call Trace:
[   35.417522]  [<c1156ec3>] ubifs_check_node+0x21d/0x22e
[   35.421699]  [<c115d6db>] ubifs_scan_a_node+0x139/0x297
[   35.425699]  [<c116dd3d>] ubifs_recover_leb+0x5d3/0x63e
[   35.425699]  [<c108fdb4>] ? __slab_free+0x3d/0x1db
[   35.429345]  [<c115e60e>] ubifs_replay_journal+0x7f5/0x14b7
[   35.429345]  [<c1169a1c>] ? ubifs_lpt_init+0x528/0x8b2
[   35.434631]  [<c1153471>] ubifs_fill_super+0xb31/0x198b
[   35.434631]  [<c11553bc>] ubifs_get_sb+0x40f/0x493
[   35.439765]  [<c10952d9>] vfs_kern_mount+0x80/0x115
[   35.443765]  [<c1095415>] do_kern_mount+0x32/0xbe
[   35.443765]  [<c10a55e0>] do_mount+0x550/0x5af
[   35.447007]  [<c1399518>] ? do_page_fault+0x0/0x26e
[   35.447007]  [<c107c544>] ? strndup_user+0x40/0x5f
[   35.451007]  [<c10a56a0>] sys_mount+0x61/0x8f
[   35.454462]  [<c1002b64>] sysenter_do_call+0x12/0x22
[   35.458825] UBIFS error (pid 1110): ubifs_scanned_corruption:
corruption at LEB 388:81472
[   35.463297] UBIFS error (pid 1110): ubifs_scanned_corruption: first
8192 bytes from LEB 388:81472
[   35.481198] UBIFS error (pid 1110): ubifs_recover_leb: LEB 388
scanning failed
mount: mounting ubi0 on /mtd3 failed: Structure needs cleaning