Re: [PATCH 01/16] xfs: sb verifier doesn't handle uncached sb buffer

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Jul 14, 2021 at 02:18:57PM +1000, Dave Chinner wrote:
> From: Dave Chinner <dchinner@xxxxxxxxxx>
> 
> The verifier checks explicitly for bp->b_bn == XFS_SB_DADDR to match
> the primary superblock buffer, but the primary superblock is an
> uncached buffer and so bp->b_bn is always -1ULL. Hence this never
> matches and the CRC error reporting is wholly dependent on the
> mount superblock already being populated so CRC feature checks pass
> and allow CRC errors to be reported.
> 
> Fix this so that the primary superblock CRC error reporting is not
> dependent on already having read the superblock into memory.

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

.. in the long run we really need to kill of b_bn to avoid this
kind of confusion.



[Index of Archives]     [XFS Filesystem Development (older mail)]     [Linux Filesystem Development]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux RAID]     [Linux SCSI]


  Powered by Linux