Re: mount stuck, khubd blocked

[Jeff Moyer]

Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> 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++;
--
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