2009-03-03 09:58:38     Kernel-panic mounting spi_mmc

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2009-03-03 09:58:38     Kernel-panic mounting spi_mmc

Michael Heiser (GERMANY)

Message: 70292   

 

Hey guys,

 

Another problem has occured while testing my uClinux-dist 2008R1.5. My MMC card is not mounting and i get following error.

 

root:/> mount -t vfat /dev/spi_mmc /media

New MMC/SD card found: 3843 MB(4029677568 bytes)

spi_mmc:

root:/> BUG: failure at block/elevator.c:780/elv_dequeue_request()!

Kernel panic - not syncing: BUG!

 

What can I do?

 

Regards,

 

Michael

 

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2009-03-03 20:08:47     Re: Kernel-panic mounting spi_mmc

Mike Frysinger (UNITED STATES)

Message: 70307   

 

what hardware exactly are you using ?

 

run `make bugreport` and post the tarball as an attachment

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2009-03-04 01:02:39     Re: Kernel-panic mounting spi_mmc

P SENTHIL KUMAR (INDIA)

Message: 70315   

 

Hi Mike and Michael,

 

I am using BF561 based custom with 2008R1.5 release.

 

I had accidently meet with the below issue at every first time of mounting the spi_mmc driver with msdos filesystem.

 

root:/sdcard> ls

barbie.mp3    flower~1.jpg  flower~2.jpg  jpg04.jpg     jpg18.jpg // Files in sdcard, mounted using vfat filesystem

root:/sdcard> cd ..

root:/> ls

bin     etc     init    mnt     root    sdcard  tmp     var

dev     home    lib     proc    sbin    sys     usr

root:/>

root:/>

root:/>

root:/>

root:/>

root:/>

root:/> umount /sdcard/

root:/> ls

bin     etc     init    mnt     root    sdcard  tmp     var

dev     home    lib     proc    sbin    sys     usr

root:/> cd sdcard/

root:/sdcard> ls

root:/sdcard>

root:/sdcard>

root:/sdcard> cd ..

root:/>

root:/>

root:/>

root:/> cat /proc/spi_mmc

Driver build date: Feb 25 2009

SCLK: 10000 KHz

SPISEL2 as chip select

Driver: Blackfin PIO SPI directly

Total errors: 0

 

SD card :

         Capacity: 252968960 B

         Name: SD256€@

         Rev: 4.0

         Date: 2005/5

         Serial: 0xe13d0c (14761228)

         CSD ver.: 0

         CCC supported: 5f5

         Mult. block writes works: YES

last block:      1005056

users:   0

Performance for last 100 transfers

         Mean read throughput:   4 kB/s

         Mean write throughput:  0 kB/s

root:/>

root:/>

root:/>

root:/>

root:/> mount -t msdos /dev/spi_mmc /tmp/

root:/> BUG: failure at block/elevator.c:780/elv_dequeue_request()!

Kernel panic - not syncing: BUG!

 

Regards, Senthil

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2009-03-04 02:28:25     Re: Kernel-panic mounting spi_mmc

Michael Heiser (GERMANY)

Message: 70327   

 

Hi Mike,

 

Here is the Bugreport of my Distro.

 

Regards

 

Michael

 

bugreport.tgz

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2009-03-04 02:50:02     Re: Kernel-panic mounting spi_mmc

Mike Frysinger (UNITED STATES)

Message: 70333   

 

you guys already have a thread going.  dont start a second one.

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