Patch "qed: Fix possible system hang in the dcbnl-getdcbx() path." has been added to the 4.9-stable tree

Patch "qed: Fix possible system hang in the dcbnl-getdcbx() path." has been added to the 4.9-stable tree

[gregkh]

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

    qed: Fix possible system hang in the dcbnl-getdcbx() path.

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:
     qed-fix-possible-system-hang-in-the-dcbnl-getdcbx-path.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 <stable@vger.kernel.org> know about it.


>From foo@baz Thu Oct  5 10:28:31 CEST 2017
From: "sudarsana.kalluru@cavium.com" <sudarsana.kalluru@cavium.com>
Date: Wed, 19 Apr 2017 03:19:54 -0700
Subject: qed: Fix possible system hang in the dcbnl-getdcbx() path.

From: "sudarsana.kalluru@cavium.com" <sudarsana.kalluru@cavium.com>


[ Upstream commit 62289ba27558553871fd047baadaaeda886c6a63 ]

qed_dcbnl_get_dcbx() API uses kmalloc in GFT_KERNEL mode. The API gets
invoked in the interrupt context by qed_dcbnl_getdcbx callback. Need
to invoke this kmalloc in atomic mode.

Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/ethernet/qlogic/qed/qed_dcbx.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dcbx.c
@@ -1222,7 +1222,7 @@ static struct qed_dcbx_get *qed_dcbnl_ge
 {
 	struct qed_dcbx_get *dcbx_info;
 
-	dcbx_info = kzalloc(sizeof(*dcbx_info), GFP_KERNEL);
+	dcbx_info = kmalloc(sizeof(*dcbx_info), GFP_ATOMIC);
 	if (!dcbx_info)
 		return NULL;
 


Patches currently in stable-queue which might be from sudarsana.kalluru@cavium.com are

queue-4.9/qed-fix-possible-system-hang-in-the-dcbnl-getdcbx-path.patch