Patch "scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI MPT pass through command" has been added to the 4.13-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI MPT pass through command

to the 4.13-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-megaraid_sas-mismatch-of-allocated-mfi-frame-size-and-length-exposed-in-mfi-mpt-pass-through-command.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From ed2983f458bed9dc827ec60c8486253b1669bb52 Mon Sep 17 00:00:00 2001
From: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Date: Wed, 23 Aug 2017 04:46:55 -0700
Subject: scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI MPT pass through command

From: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>

commit ed2983f458bed9dc827ec60c8486253b1669bb52 upstream.

Driver allocated 256 byte MFI frames bytes but while sending MFI frame
(embedded inside chain frame of MPT frame) to firmware, driver sets the
length as 4k. This results in DMA read error messages during boot.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/megaraid/megaraid_sas_fusion.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -3287,7 +3287,7 @@ build_mpt_mfi_pass_thru(struct megasas_i
 	mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
 		MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
 
-	mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
+	mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
 }
 
 /**


Patches currently in stable-queue which might be from shivasharan.srikanteshwara@broadcom.com are

queue-4.13/scsi-megaraid_sas-check-valid-aen-class-range-to-avoid-kernel-panic.patch
queue-4.13/scsi-megaraid_sas-return-pended-ioctls-with-cmd_status-mfi_stat_wrong_state-in-case-adapter-is-dead.patch
queue-4.13/scsi-megaraid_sas-set-minimum-value-of-resetwaittime-to-be-1-secs.patch
queue-4.13/scsi-megaraid_sas-mismatch-of-allocated-mfi-frame-size-and-length-exposed-in-mfi-mpt-pass-through-command.patch