[PATCH 2/5] staging: hv: Fixed lockup problem with bounce_buffer scatter list
Greg KH
greg at kroah.com
Mon Aug 30 23:49:02 UTC 2010
On Thu, Aug 05, 2010 at 07:29:53PM +0000, Hank Janssen wrote:
> From: Hank Janssen <hjanssen at microsoft.com>
>
> Fixed lockup problem with bounce_buffer scatter list which caused
> crashes in heavy loads. Under heavy loads with many clients we this
> problem appear, it causes a kernel Panic.
>
> Signed-off-by:Hank Janssen <hjanssen at microsoft.com>
> Signed-off-by:Haiyang Zhang <haiyangz at microsoft.com>
> Cc: stable <stable at kernel.org>
> ---
> drivers/staging/hv/storvsc_drv.c | 9 ++++++---
> 1 files changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
> index 3b9ccb0..169d701 100644
> --- a/drivers/staging/hv/storvsc_drv.c
> +++ b/drivers/staging/hv/storvsc_drv.c
> @@ -615,6 +615,7 @@ static int storvsc_queuecommand(struct scsi_cmnd *scmnd,
> unsigned int request_size = 0;
> int i;
> struct scatterlist *sgl;
> + unsigned int sg_count = 0;
>
> DPRINT_DBG(STORVSC_DRV, "scmnd %p dir %d, use_sg %d buf %p len %d "
> "queue depth %d tagged %d", scmnd, scmnd->sc_data_direction, @@ -697,6 +698,7 @@ static int storvsc_queuecommand(struct scsi_cmnd *scmnd,
> request->DataBuffer.Length = scsi_bufflen(scmnd);
This patch is corrupted. It applies, but doesn't do what you want it to
do :(
Care to resend?
thanks,
greg k-h
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