> I tried putting up to 5 sync() and even moving the close_partition() call at
> the end (making a total of 10 sync()). It still crashes but less frequently
> with this mod.
Another idea: increase the sync delay or number of syncs before the ioctl.
> Find below the disasm of the whole function as you asked.
Mapping to this section of invalidate_bdev():
write_lock(&hash_table_lock);
/* All buffers in the lru lists are mapped */
if (!buffer_mapped(bh))
BUG(); <-- here
if (buffer_dirty(bh)) <-- or here
printk("invalidate: dirty buffer\n");
if (!atomic_read(&bh->b_count)) {
if (destroy_dirty_buffers || !buffer_dirty(bh))
{
remove_inode_queue(bh);
}
} else
printk("invalidate: busy buffer\n");
> The crash always happens with lr pointing to c0039d14 so apparently the test
> at c0039cf0 fails and the kernel is trying to tell me something (printk)
> except that I don't see it (no flush?). Apparently the message is still for
> x86 (ead is a x86 right?).
Maybe you don't see it because BUG() maps to calling both printk and
xmon.. That would mean we hit a buffer head that has just been unmapped
from under us. Turn that BUG() into a call to printk and panic instead...
My guess is it crashes on the next line (buffer_dirty(bh))... what's in
r31?
Michael
