荔枝plus,内核起来后mmc卡就出问题了，检查了mmc也没坏啊，重做系统也是如此，原来一切正常，插上otg插了一次usb网卡，就出现mmc错误
再启就启不来了
[ 1.211399] Waiting for root device /dev/mmcblk0p2...
[ 1.242544] mmc0: host does not support reading read-only switch, assuming write-enable
[ 1.252627] mmc0: new high speed SDHC card at address 1234
[ 1.259906] mmcblk0: mmc0:1234 SA04G 3.71 GiB
[ 1.266462] mmcblk0: p1 p2 p3
[ 1.296216] random: fast init done
[ 1.304707] EXT4-fs (mmcblk0p2): recovery complete
[ 1.309667] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 1.317907] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 1.325373] devtmpfs: mounted
[ 1.329617] Freeing unused kernel memory: 1024K
[ 1.334308] Run /sbin/init as init process
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Saving random seed: [ 1.870926] random: dd: uninitialized urandom read (512 bytes read)
OK
Starting haveged: haveged: command socket is listening at fd 3
OK
Starting system message bus: [ 2.775434] sunxi-mmc 1c0f000.mmc: fatal err update clk timeout
[ 2.786495] mmc0: card 1234 removed
/etc/init.d/S30dbus: line 23: /usr/bin/dbus-uuidgen: Input/output error
[ 2.806459] JBD2: Error -5 detected when updating journal superblock for mmcblk0p2-8.
[ 2.814302] Aborting journal on device mmcblk0p2-8.
[ 2.820483] EXT4-fs (mmcblk0p2): I/O error while writing superblock
[ 2.826889] EXT4-fs error (device mmcblk0p2): ext4_journal_check_start:61: Detected aborted journal
[ 2.835959] EXT4-fs (mmcblk0p2): Remounting filesystem read-only
[ 2.845733] JBD2: Error -5 detected when updating journal superblock for mmcblk0p2-8.
[ 3.625424] sunxi-mmc 1c0f000.mmc: fatal err update clk timeout
[ 4.375412] sunxi-mmc 1c0f000.mmc: fatal err update clk timeout
[ 4.381943] EXT4-fs error (device mmcblk0p2): __ext4_find_entry:1531: inode #2: comm syslogd: reading directory lblock 0
[ 4.392989] EXT4-fs (mmcblk0p2): I/O error while writing superblock
[ 4.399355] ------------[ cut here ]------------
[ 4.403993] WARNING: CPU: 0 PID: 122 at fs/fs-writeback.c:2232 __mark_inode_dirty+0x1dc/0x278
[ 4.412528] bdi-block not registered
[ 4.416108] Modules linked in:
[ 4.419168] CPU: 0 PID: 122 Comm: S30dbus Not tainted 5.2.0-leon #47
[ 4.425510] Hardware name: Allwinner sun8i Family
[ 4.430237] [<c010ede4>] (unwind_backtrace) from [<c010b774>] (show_stack+0x10/0x14)
[ 4.437978] [<c010b774>] (show_stack) from [<c05f6818>] (dump_stack+0x88/0x9c)
[ 4.445198] [<c05f6818>] (dump_stack) from [<c011db1c>] (__warn+0xdc/0xf4)
[ 4.452067] [<c011db1c>] (__warn) from [<c011db7c>] (warn_slowpath_fmt+0x48/0x6c)
[ 4.459544] [<c011db7c>] (warn_slowpath_fmt) from [<c0240658>] (__mark_inode_dirty+0x1dc/0x278)
[ 4.468239] [<c0240658>] (__mark_inode_dirty) from [<c0230f7c>] (generic_update_time+0xd8/0xfc)
[ 4.476930] [<c0230f7c>] (generic_update_time) from [<c0232df0>] (touch_atime+0xb8/0xd4)
[ 4.485017] [<c0232df0>] (touch_atime) from [<c01c3858>] (generic_file_read_iter+0x820/0xa3c)
[ 4.493539] [<c01c3858>] (generic_file_read_iter) from [<c0215adc>] (__vfs_read+0x128/0x1c0)
[ 4.501970] [<c0215adc>] (__vfs_read) from [<c0215c00>] (vfs_read+0x8c/0x118)
[ 4.509099] [<c0215c00>] (vfs_read) from [<c0215cb8>] (kernel_read+0x2c/0x44)
[ 4.516230] [<c0215cb8>] (kernel_read) from [<c021c1c8>] (prepare_binprm+0xe8/0x168)
[ 4.523967] [<c021c1c8>] (prepare_binprm) from [<c021d2f0>] (__do_execve_file+0x570/0x790)
[ 4.532225] [<c021d2f0>] (__do_execve_file) from [<c021d8f8>] (sys_execve+0x34/0x3c)
[ 4.539962] [<c021d8f8>] (sys_execve) from [<c0101000>] (ret_fast_syscall+0x0/0x54)
[ 4.547606] Exception stack(0xc7bebfa8 to 0xc7bebff0)
[ 4.552656] bfa0: 000bf1a0 000ce890 000ce890 000cea58 000cbd20 000bdbf4
[ 4.560825] bfc0: 000bf1a0 000ce890 000ce880 0000000b 000cbd20 000cea20 00000000 000bc724
[ 4.568990] bfe0: b6dcdc61 bef454c4 00038578 b6dcdc68
[ 4.574068] ---[ end trace c6f207a5ddfe7556 ]---离线