On Tue, May 29, 2012 at 11:49:24AM +0200, Roberto Nibali wrote: > Hi > > Barebox barfs if I try to copy a file inside a mounted MMC fat partition. > > Steps to reproduce: > > 1.) Load barebox (configured as internal boot MMC) as a second stage boot > loader from uboot. > 2.) Mount MMC fat partition > 3.) Try to copy file to the same partition > > This results in this nice BUG(): > > Board: SID1 NOAH > registered netconsole as cs1 > noah_read_ccm_regs: CCM CRDR = 00000000 > noah_read_ccm_regs: CCM RCSR = 01020820 > noah_read_ccm_regs: Booting from WEIM: NOR > imx-esdhc@mci0: registered as mci0 > mci@mci0: registered disk0 > imx25_devices_init: Adding NOR flash device > cfi_flash@cfi_flash0: cfi flash (id=01000000 vend=000002 manu=000001 > devid=00007E extid=002301) at a0000000, size 64MB > imx25_devices_init: Adding initial NOR flash partitions > ehci@ehci0: USB EHCI 1.00 > Malloc space: 0x83b00000 -> 0x83efffff (size 4 MB) > Stack space : 0x83af8000 -> 0x83b00000 (size 32 kB) > envfs: wrong magic on /dev/env0 > no valid environment found on /dev/env0. Using default environment > running /env/bin/init... > > Hit any key to stop autoboot: 5 > > type update_kernel nor [<imagename>] to update kernel into flash > type update_root nor [<imagename>] to update rootfs into flash > > sid1-noah:/ mkdir /mnt > sid1-noah:/ mount /dev/disk0.0 fat /mnt > sid1-noah:/ time cp /mnt/console_image.jffs2 /mnt/console_image.jffs2-backup > BUG: failure at common/block.c:248/block_put()! > BUG! to BUG here seems a bit harsh. block_put calls block_get and then BUGs when block_get fails. Presumely block_cache fails here. Can you add a printf int block_cache after blk->ops->read and print the error value? I just saw that there's room for optimization. In block_put we call block_get which reads from the device, just to overwrite the data afterwards. > I reckon it might be something I shouldn't be doing, however I thought I > still report it here. What you are trying to do should work. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
