am335x ext4格式后，进入系统报错

请问您的根文件系统是NFS还是SD卡呢?

Jian Zhou 说：

请问您的根文件系统是NFS还是SD卡呢?

根文件系统是nfs，格式化的是mmc0的第二个分区

请问是mount这个SD卡的ext4分区时报的错吗？

Jian Zhou 说：

请问是mount这个SD卡的ext4分区时报的错吗？

开机时使用mdev自动挂载(配置mdev.conf)。所以是开机时会自动挂载。

最新测试发现格式化ext3分区也不好使，挂载时好使，但是输入命令ls后直接报错

advantech inserting

advantech inserting

[    4.041412] kjournald starting.  Commit interval 5 seconds

[    4.051727] EXT3-fs (mmcblk0p2): using internal journal

[    4.057250] EXT3-fs (mmcblk0p2): recovery complete

[    4.068786] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode

advantech inserting

Processing /etc/profile... Done

[root@sunplusedu ]# umount  /media/mmcblk0p2/

[root@sunplusedu ]# mkfs.ext3 /dev/mmcblk0p2

mke2fs 1.42.9 (28-Dec-2013)

Discarding device blocks: done                           

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

238560 inodes, 953859 blocks

47692 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=977272832

30 block groups

32768 blocks per group, 32768 fragments per group

7952 inodes per group

Superblock backups stored on blocks:

        32768, 98304, 163840, 229376, 294912, 819200, 884736

Allocating group tables: done                           

Writing inode tables: done                           

Creating journal (16384 blocks): done

Writing superblocks and filesystem accounting information: done

[root@sunplusedu ]# mount /dev/mmcblk0p2  /media/mmcblk0p2/

[  232.148345] kjournald starting.  Commit interval 5 seconds

[  232.350158] EXT3-fs (mmcblk0p2): using internal journal

[  232.355651] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode

[root@sunplusedu ]# cd /media/mmcblk0p2/

[root@sunplusedu mmcblk0p2]# ls

[  241.015319] ------------[ cut here ]------------

[  241.020172] kernel BUG at fs/jbd/transaction.c:2047!

[  241.025329] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT

[  241.032318] Modules linked in:

[  241.035522] CPU: 0    Not tainted  (3.2.0-rt10-gf164d14 #6)

[  241.041351] PC is at __journal_file_buffer+0xc/0x10

[  241.046447] LR is at do_get_write_access+0x328/0x470

[  241.051605] pc : [<c016394c>]    lr : [<c016400c>]    psr: 60000013

[  241.051635] sp : cf2d7df0  ip : cf2d7e00  fp : cf2d7dfc

[  241.063598] r10: cf30be00  r9 : c6a4b4c8  r8 : ce92fe08

[  241.069030] r7 : 00000000  r6 : c69e03c8  r5 : cf2cb1c0  r4 : cf2d6000

[  241.075866] r3 : 00000002  r2 : 00000007  r1 : cf2cb1c0  r0 : c6a4b4c8

[  241.082672] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user

[  241.090118] Control: 10c5387d  Table: 8f740019  DAC: 00000015

[  241.096099] Process ls (pid: 888, stack limit = 0xcf2d62f0)

[  241.101898] Stack: (0xcf2d7df0 to 0xcf2d8000)

[  241.106445] 7de0:                                     cf2d7e54 cf2d7e00 c016400c c016394c

[  241.114990] 7e00: cf2d7e34 00000000 c00adc7c c048b544 00000029 cf2d6000 ce92fe08 ce92fe08

[  241.123535] 7e20: c06d6744 ce969d08 cf2d7e54 c6a4b4c8 c69e03c8 ce92fe08 c049eb08 ce969d08

[  241.132080] 7e40: cf2d6000 ce969d6c cf2d7e6c cf2d7e58 c01642e0 c0163cf0 00000000 c69e03c8

[  241.140594] 7e60: cf2d7e94 cf2d7e70 c0127acc c01642c0 cf2d6000 ce969d6c 00000000 ce969d08

[  241.149139] 7e80: cf2d7ebc c69e03c8 cf2d7eb4 cf2d7e98 c011a80c c0127ab0 ce969d08 c69e03c8

[  241.157684] 7ea0: 00000000 cf2d7f78 cf2d7edc cf2d7eb8 c011a860 c011a7c0 cf2d7f78 ce92fe08

[  241.166198] 7ec0: 00000100 00000000 c69e03c8 ce969d08 cf2d7efc cf2d7ee0 c011d400 c011a84c

[  241.174743] 7ee0: c011d3a0 00000001 ce969d08 cf2d7f28 cf2d7f24 cf2d7f00 c00d45a4 c011d3ac

[  241.183288] 7f00: ce969d3c ce969d08 cf3350c0 cf2d7f28 cf2d7f78 ce969d08 cf2d7f4c cf2d7f28

[  241.191802] 7f20: c00c9808 c00d457c 386d4e43 00000000 cf2d7f78 cf0452c0 00000000 c00c1f78

[  241.200347] 7f40: cf2d7f74 cf2d7f50 c00c226c c00c9720 00000000 0015a938 00008000 cf0452c0

[  241.208892] 7f60: c0014aa8 00000000 cf2d7fa4 cf2d7f78 c00c23fc c00c21c0 0015a988 0015a970

[  241.217437] 7f80: 00007fb0 ffffffea 001441c8 0015a920 0015a924 000000d9 00000000 cf2d7fa8

[  241.225952] 7fa0: c0014900 c00c23a4 001441c8 0015a920 00000003 0015a938 00008000 00000000

[  241.234497] 7fc0: 001441c8 0015a920 0015a924 000000d9 001594c0 00000000 00000000 0015a920

[  241.243041] 7fe0: 000000d9 bec57c74 000da247 00009976 60000030 00000003 8fffe821 8fffec21

[  241.251556] Backtrace:

[  241.254119] [<c0163940>] (__journal_file_buffer+0x0/0x10) from [<c016400c>] (do_get_write_access+0x328/0x470)

[  241.264465] [<c0163ce4>] (do_get_write_access+0x0/0x470) from [<c01642e0>] (journal_get_write_access+0x2c/0x40)

[  241.275024] [<c01642b4>] (journal_get_write_access+0x0/0x40) from [<c0127acc>] (__ext3_journal_get_write_access+0x28/0x58)

[  241.286529]  r5:c69e03c8 r4:00000000

[  241.290283] [<c0127aa4>] (__ext3_journal_get_write_access+0x0/0x58) from [<c011a80c>] (ext3_reserve_inode_write+0x58/0x8c)

[  241.301788]  r7:c69e03c8 r6:cf2d7ebc r5:ce969d08 r4:00000000

[  241.307739] [<c011a7b4>] (ext3_reserve_inode_write+0x0/0x8c) from [<c011a860>] (ext3_mark_inode_dirty+0x20/0x40)

[  241.318328]  r7:cf2d7f78 r6:00000000 r5:c69e03c8 r4:ce969d08

[  241.324279] [<c011a840>] (ext3_mark_inode_dirty+0x0/0x40) from [<c011d400>] (ext3_dirty_inode+0x60/0x88)

[  241.334167]  r5:ce969d08 r4:c69e03c8

[  241.337890] [<c011d3a0>] (ext3_dirty_inode+0x0/0x88) from [<c00d45a4>] (__mark_inode_dirty+0x34/0x224)

[  241.347595]  r6:cf2d7f28 r5:ce969d08 r4:00000001 r3:c011d3a0

[  241.353546] [<c00d4570>] (__mark_inode_dirty+0x0/0x224) from [<c00c9808>] (touch_atime+0xf4/0x15c)

[  241.362884]  r8:ce969d08 r7:cf2d7f78 r6:cf2d7f28 r5:cf3350c0 r4:ce969d08

[  241.369720] r3:ce969d3c

[  241.372467] [<c00c9714>] (touch_atime+0x0/0x15c) from [<c00c226c>] (vfs_readdir+0xb8/0xc4)

[  241.381072]  r6:c00c1f78 r5:00000000 r4:cf0452c0

[  241.385925] [<c00c21b4>] (vfs_readdir+0x0/0xc4) from [<c00c23fc>] (sys_getdents64+0x64/0xc4)

[  241.394744] [<c00c2398>] (sys_getdents64+0x0/0xc4) from [<c0014900>] (ret_fast_syscall+0x0/0x30)

[  241.403900]  r7:000000d9 r6:0015a924 r5:0015a920 r4:001441c8

[  241.409820] Code: eaffffbf e1a0c00d e92dd800 e24cb004 (e7f001f2)

[  241.416229] ---[ end trace 016dbec988a00c1a ]---

[  241.421051] note: ls[888] exited with preempt_count 2

[  241.426391] BUG: scheduling while atomic: ls/888/0x40000003

[  241.432220] Modules linked in:

[  241.435394] Backtrace:

[  241.437988] [<c0018018>] (dump_backtrace+0x0/0x10c) from [<c048a524>] (dump_stack+0x18/0x1c)

[  241.446807]  r6:c0678f30 r5:c0678f30 r4:00000000 r3:20000013

[  241.452728] [<c048a50c>] (dump_stack+0x0/0x1c) from [<c048a7ac>] (__schedule_bug+0x54/0x60)

[  241.461456] [<c048a758>] (__schedule_bug+0x0/0x60) from [<c048e6f4>] (__schedule+0x2f4/0x334)

[  241.470367]  r4:cf2d6000 r3:00000000

[  241.474090] [<c048e400>] (__schedule+0x0/0x334) from [<c0039d64>] (__cond_resched+0x28/0x44)

[  241.482910] [<c0039d3c>] (__cond_resched+0x0/0x44) from [<c048e774>] (_cond_resched+0x40/0x48)

[  241.491912]  r4:00000000 r3:00000002

[  241.495666] [<c048e734>] (_cond_resched+0x0/0x48) from [<c009a004>] (unmap_vmas+0x4a4/0x6cc)

[  241.504486] [<c0099b60>] (unmap_vmas+0x0/0x6cc) from [<c009fc30>] (exit_mmap+0x110/0x2a4)

[  241.513031] [<c009fb20>] (exit_mmap+0x0/0x2a4) from [<c003dbbc>] (mmput+0x3c/0x118)

[  241.521026] [<c003db80>] (mmput+0x0/0x118) from [<c0041d50>] (exit_mm+0x138/0x158)

[  241.528930]  r5:cf398ac0 r4:cf1eef00

[  241.532684] [<c0041c18>] (exit_mm+0x0/0x158) from [<c0043854>] (do_exit+0x530/0x708)

[  241.540771]  r7:00000001 r6:cf1eef00 r5:00000000 r4:0000000b

[  241.546722] [<c0043324>] (do_exit+0x0/0x708) from [<c0018318>] (die+0x140/0x2f4)

[  241.554412]  r7:00000001

[  241.557067] [<c00181d8>] (die+0x0/0x2f4) from [<c00184f0>] (arm_notify_die+0x24/0x5c)

[  241.565246] [<c00184cc>] (arm_notify_die+0x0/0x5c) from [<c000835c>] (do_undefinstr+0x148/0x1a0)

[  241.574432] [<c0008214>] (do_undefinstr+0x0/0x1a0) from [<c00145a8>] (__und_svc+0x48/0x60)

[  241.583068] Exception stack(0xcf2d7da8 to 0xcf2d7df0)

[  241.588348] 7da0:                   c6a4b4c8 cf2cb1c0 00000007 00000002 cf2d6000 cf2cb1c0

[  241.596893] 7dc0: c69e03c8 00000000 ce92fe08 c6a4b4c8 cf30be00 cf2d7dfc cf2d7e00 cf2d7df0

[  241.605438] 7de0: c016400c c016394c 60000013 ffffffff

[  241.610687]  r8:e7100000 r7:00000000 r6:c0014814 r5:60000013 r4:c0163950

[  241.617706] [<c0163940>] (__journal_file_buffer+0x0/0x10) from [<c016400c>] (do_get_write_access+0x328/0x470)

[  241.628082] [<c0163ce4>] (do_get_write_access+0x0/0x470) from [<c01642e0>] (journal_get_write_access+0x2c/0x40)

[  241.638610] [<c01642b4>] (journal_get_write_access+0x0/0x40) from [<c0127acc>] (__ext3_journal_get_write_access+0x28/0x58)

[  241.650146]  r5:c69e03c8 r4:00000000

[  241.653900] [<c0127aa4>] (__ext3_journal_get_write_access+0x0/0x58) from [<c011a80c>] (ext3_reserve_inode_write+0x58/0x8c)

[  241.665435]  r7:c69e03c8 r6:cf2d7ebc r5:ce969d08 r4:00000000

[  241.671356] [<c011a7b4>] (ext3_reserve_inode_write+0x0/0x8c) from [<c011a860>] (ext3_mark_inode_dirty+0x20/0x40)

[  241.681976]  r7:cf2d7f78 r6:00000000 r5:c69e03c8 r4:ce969d08

[  241.687927] [<c011a840>] (ext3_mark_inode_dirty+0x0/0x40) from [<c011d400>] (ext3_dirty_inode+0x60/0x88)

[  241.697814]  r5:ce969d08 r4:c69e03c8

[  241.701568] [<c011d3a0>] (ext3_dirty_inode+0x0/0x88) from [<c00d45a4>] (__mark_inode_dirty+0x34/0x224)

[  241.711273]  r6:cf2d7f28 r5:ce969d08 r4:00000001 r3:c011d3a0

[  241.717224] [<c00d4570>] (__mark_inode_dirty+0x0/0x224) from [<c00c9808>] (touch_atime+0xf4/0x15c)

[  241.726562]  r8:ce969d08 r7:cf2d7f78 r6:cf2d7f28 r5:cf3350c0 r4:ce969d08

[  241.733398] r3:ce969d3c

[  241.736145] [<c00c9714>] (touch_atime+0x0/0x15c) from [<c00c226c>] (vfs_readdir+0xb8/0xc4)

[  241.744781]  r6:c00c1f78 r5:00000000 r4:cf0452c0

[  241.749603] [<c00c21b4>] (vfs_readdir+0x0/0xc4) from [<c00c23fc>] (sys_getdents64+0x64/0xc4)

[  241.758422] [<c00c2398>] (sys_getdents64+0x0/0xc4) from [<c0014900>] (ret_fast_syscall+0x0/0x30)

[  241.767608]  r7:000000d9 r6:0015a924 r5:0015a920 r4:001441c8

Segmentation fault

[root@sunplusedu mmcblk0p2]#

经过测试，发现是内核问题，某些编译的好使，某些编译的不好使。

blaider wang 说：

经过测试，发现是内核问题，某些编译的好使，某些编译的不好使。

会不会是内核没有打开对ext4的支持。。。

Yaoming Qin 说：

经过测试，发现是内核问题，某些编译的好使，某些编译的不好使。