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author | Greg Edwards <gedwards@ddn.com> | 2018-07-26 15:52:54 -0400 |
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committer | Ben Hutchings <ben@decadent.org.uk> | 2018-12-16 22:08:27 +0000 |
commit | 56b0417092e4c12793276637e010e53b4482d658 (patch) | |
tree | 23f8ba88ffda1f18b7dfff8c682c98d8c03494fd /drivers/dio | |
parent | ed1a4f65447b5475afaf2f13a74cddf332e3e5ad (diff) | |
download | linux-stable-56b0417092e4c12793276637e010e53b4482d658.tar.gz linux-stable-56b0417092e4c12793276637e010e53b4482d658.tar.bz2 linux-stable-56b0417092e4c12793276637e010e53b4482d658.zip |
scsi: virtio_scsi: fix pi_bytes{out,in} on 4 KiB block size devices
commit cdcdcaae8450a975e7d07e1bfec21f9b8c016d0c upstream.
When the underlying device is a 4 KiB logical block size device with a
protection interval exponent of 0, i.e. 4096 bytes data + 8 bytes PI, the
driver miscalculates the pi_bytes{out,in} by a factor of 8x (64 bytes).
This leads to errors on all reads and writes on 4 KiB logical block size
devices when CONFIG_BLK_DEV_INTEGRITY is enabled and the
VIRTIO_SCSI_F_T10_PI feature bit has been negotiated.
Fixes: e6dc783a38ec0 ("virtio-scsi: Enable DIF/DIX modes in SCSI host LLD")
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Edwards <gedwards@ddn.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/dio')
0 files changed, 0 insertions, 0 deletions