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Patch "ibmvscsis: Fix sleeping in interrupt context" has been added to the 4.9-stable tree

PATCH [email protected] 1 participant 1 message Jan 23, 2017

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

ibmvscsis: Fix sleeping in interrupt context

to the 4.9-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:
ibmvscsis-fix-sleeping-in-interrupt-context.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From a5b0e4062fb225155189e593699bbfcd0597f8b5 Mon Sep 17 00:00:00 2001

From: "Bryant G. Ly" <[email protected]>
Date: Wed, 11 Jan 2017 13:16:42 -0600
Subject: ibmvscsis: Fix sleeping in interrupt context

From: Bryant G. Ly <[email protected]>

commit a5b0e4062fb225155189e593699bbfcd0597f8b5 upstream.

Currently, dma_alloc_coherent is being called with a GFP_KERNEL flag which allows it to sleep in an interrupt context, need to change to GFP_ATOMIC.

---
 drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c +2 -2
@@ -1239,7 +1239,7 @@ static long ibmvscsis_adapter_info(struc
 	}
 
 	info = dma_alloc_coherent(&vscsi->dma_dev->dev, sizeof(*info), &token,
-				  GFP_KERNEL);
+				  GFP_ATOMIC);
 	if (!info) {
 		dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
 			iue->target);
@@ -1357,7 +1357,7 @@ static int ibmvscsis_cap_mad(struct scsi
 	}
 
 	cap = dma_alloc_coherent(&vscsi->dma_dev->dev, olen, &token,
-				 GFP_KERNEL);
+				 GFP_ATOMIC);
 	if (!cap) {
 		dev_err(&vscsi->dev, "bad dma_alloc_coherent %p\n",
 			iue->target);

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/ibmvscsis-fix-max-transfer-length.patch queue-4.9/ibmvscsis-fix-sleeping-in-interrupt-context.patch