On Mon, Aug 07, 2023 at 02:14:01PM +0000, Michael Kelley (LINUX) wrote: > From: gregkh@xxxxxxxxxxxxxxxxxxx <gregkh@xxxxxxxxxxxxxxxxxxx> Sent: Monday, August 7, 2023 12:17 AM > > > > This is a note to let you know that I've just added the patch titled > > > > scsi: storvsc: Limit max_sectors for virtual Fibre Channel devices > > > > to the 5.15-stable tree which can be found at: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git > > This commit should not need backporting to 5.15. The commit that > it is fixing first appeared in 5.19. Yes, but: > > Michael > > > > > The filename of the patch is: > > scsi-storvsc-limit-max_sectors-for-virtual-fibre-channel-devices.patch > > and it can be found in the queue-5.15 subdirectory. > > > > If you, or anyone else, feels it should not be added to the stable tree, > > please let <stable@xxxxxxxxxxxxxxx> know about it. > > > > > > From 010c1e1c5741365dbbf44a5a5bb9f30192875c4c Mon Sep 17 00:00:00 2001 > > From: Michael Kelley <mikelley@xxxxxxxxxxxxx> > > Date: Thu, 20 Jul 2023 14:05:02 -0700 > > Subject: scsi: storvsc: Limit max_sectors for virtual Fibre Channel devices > > > > From: Michael Kelley <mikelley@xxxxxxxxxxxxx> > > > > commit 010c1e1c5741365dbbf44a5a5bb9f30192875c4c upstream. > > > > The Hyper-V host is queried to get the max transfer size that it supports, > > and this value is used to set max_sectors for the synthetic SCSI > > controller. However, this max transfer size may be too large for virtual > > Fibre Channel devices, which are limited to 512 Kbytes. If a larger > > transfer size is used with a vFC device, Hyper-V always returns an error, > > and storvsc logs a message like this where the SRB status and SCSI status > > are both zero: > > > > hv_storvsc <GUID>: tag#197 cmd 0x8a status: scsi 0x0 srb 0x0 hv 0xc0000001 > > > > Add logic to limit the max transfer size to 512 Kbytes for vFC devices. > > > > Fixes: 1d3e0980782f ("scsi: storvsc: Correct reporting of Hyper-V I/O size limits") This commit is in 5.15.51, so why wouldn't the fix also be needed in this tree? thanks, greg k-h
