On Thu, 2012-07-12 at 16:28 +0200, Stevie Trujillo wrote: > Hello, > > I was trying to create a bootdisk to update my BIOS, and accidentially > made a 512byte image with only the FreeDOS header in it. > > ( Linux 3.4.4 ) > # mount -o loop dosdisk.img /tmp > ^C^C^C > It uses 100% CPU and doesn't listen to me when I do ^C, kill -9 etc. I > think this means it's stuck in the kernel?
Here is the stack trace I get for the mount process: [root@telezart smagnani]# cat /proc/1334/stack [<ffffffff81077a5a>] __cond_resched+0x2a/0x40 [<ffffffff8110c4bb>] find_lock_page+0x3b/0x80 [<ffffffff8110cbaf>] find_or_create_page+0x3f/0xb0 [<ffffffff8119a692>] __getblk+0xf2/0x2a0 [<ffffffff8119a893>] __bread+0x13/0xb0 [<ffffffffa00fd1fe>] fat__get_entry+0x14e/0x220 [fat] [<ffffffffa00fd596>] fat_get_short_entry+0x66/0xc0 [fat] [<ffffffffa00ff765>] fat_subdirs+0x55/0x80 [fat] [<ffffffffa0103d30>] fat_fill_super+0x810/0xa80 [fat] [<ffffffffa00e821a>] vfat_fill_super+0x1a/0x20 [vfat] [<ffffffff8116d61b>] mount_bdev+0x1cb/0x210 [<ffffffffa00e81f5>] vfat_mount+0x15/0x20 [vfat] [<ffffffff8116e410>] mount_fs+0x20/0xd0 [<ffffffff81186e4f>] vfs_kern_mount+0x6f/0x100 [<ffffffff81187804>] do_kern_mount+0x54/0x110 [<ffffffff811891d6>] do_mount+0x306/0x8b0 [<ffffffff811898cd>] sys_mount+0x8d/0xe0 [<ffffffff81583629>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff I would think this is more likely a bug in the loopback driver than the FAT filesystem... ------------------------------------------------------------------------ Steven J. Magnani "I claim this network for MARS! www.digidescorp.com Earthling, return my space modulator!" #include <standard.disclaimer> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/