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SubjectRe: mount stuck, khubd blocked
On Wed, 20 Jun 2012, Jeff Moyer wrote:

> Alan Stern <stern@rowland.harvard.edu> writes:
>
> > On Tue, 19 Jun 2012, Dima Tisnek wrote:
> >
> >> I made a microsd flash with 2 partitions, sdb1 is data partition, and
> >> sdb2 is a sentinel partition, 1 block in size.
> >>
> >> I attached the usb-microsd reader with that card in it and by mistake
> >> tried to mount the sentinel partition, I ran:
> >> mount /dev/sdb2 /mnt/flash/
> >>
> >> mount got stuck, I was not able to kill or strace it, I pulled the usb
> >> reader from the port, mount was still stuck, here's the dmesg log:
>
> Hi, Dima,
>
> Could you try the following patch?
>
> Thanks,
> Jeff
>
> diff --git a/fs/buffer.c b/fs/buffer.c
> index 838a9cf..769b30b 100644
> --- a/fs/buffer.c
> +++ b/fs/buffer.c
> @@ -930,7 +930,7 @@ init_page_buffers(struct page *page, struct block_device *bdev,
> bh->b_blocknr = block;
> if (uptodate)
> set_buffer_uptodate(bh);
> - if (block < end_block)
> + if (block <= end_block)
> set_buffer_mapped(bh);
> }
> block++;

Jeff, does this also fix Bugzilla #43269?

Alan Stern



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