Re: report bug: System reboots when accessing a loop-device over a second loop-device with 2.4.2-ac7

[Jens Axboe]

On Thu, Mar 01 2001, Mario Hermann wrote:
> I tried the following commands with 2.4.2-ac7:
> 
> losetup /dev/loop0 test.dat
> losetup /dev/loop1 /dev/loop0
> mke2fs /dev/loop1
> 
> My System reboots immediatly. I tried it with 2.4.2-ac4,ac5 too -> same
> effect.
> 
> With 2.4.2 it hangs immediatly.

This should make it work again.

-- 
Jens Axboe


--- /opt/kernel/linux-2.4.2-ac7/drivers/block/loop.c    Thu Mar  1 15:46:14 2001
+++ drivers/block/loop.c        Thu Mar  1 17:17:13 2001
@@ -397,10 +397,10 @@
        if (!buffer_locked(rbh))
                BUG();
 
-       if (MINOR(rbh->b_dev) >= max_loop)
+       if (MINOR(rbh->b_rdev) >= max_loop)
                goto out;
 
-       lo = &loop_dev[MINOR(rbh->b_dev)];
+       lo = &loop_dev[MINOR(rbh->b_rdev)];
        spin_lock_irq(&lo->lo_lock);
        if (lo->lo_state != Lo_bound)
                goto inactive;