Patch "vTPM: fix memory allocation flag for rtce buffer at kernel boot" has been added to the 4.3-stable tree

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

vTPM: fix memory allocation flag for rtce buffer at kernel boot

to the 4.3-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:
vtpm-fix-memory-allocation-flag-for-rtce-buffer-at-kernel-boot.patch
and it can be found in the queue-4.3 subdirectory.

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

From: "Hon Ching \\(Vicky\\) Lo" <[email protected]>
Date: Wed, 7 Oct 2015 20:11:51 -0400
Subject: vTPM: fix memory allocation flag for rtce buffer at kernel boot

From: Hon Ching \(Vicky\) Lo <[email protected]>

commit 60ecd86c4d985750efa0ea3d8610972b09951715 upstream.

At ibm vtpm initialzation, tpm_ibmvtpm_probe() registers its interrupt handler, ibmvtpm_interrupt, which calls ibmvtpm_crq_process to allocate memory for rtce buffer. The current code uses 'GFP_KERNEL' as the type of kernel memory allocation, which resulted a warning at kernel/lockdep.c. This patch uses 'GFP_ATOMIC' instead so that the allocation is high-priority and does not sleep.

---
 drivers/char/tpm/tpm_ibmvtpm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -491,7 +491,7 @@ static void ibmvtpm_crq_process(struct i
 			}
 			ibmvtpm->rtce_size = be16_to_cpu(crq->len);
 			ibmvtpm->rtce_buf = kmalloc(ibmvtpm->rtce_size,
-						    GFP_KERNEL);
+						    GFP_ATOMIC);
 			if (!ibmvtpm->rtce_buf) {
 				dev_err(ibmvtpm->dev, "Failed to allocate memory for rtce buffer\n");
 				return;

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

queue-4.3/vtpm-fix-memory-allocation-flag-for-rtce-buffer-at-kernel-boot.patch