Commit 8f9bd136 authored Apr 19, 2017 by sudarsana.kalluru@cavium.com Committed by Greg Kroah-Hartman Oct 08, 2017

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




[ 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>

parent f0631685

drivers/net/ethernet/qlogic/qed/qed_dcbx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1222,7 +1222,7 @@ static struct qed_dcbx_get qed_dcbnl_get_dcbx(struct qed_hwfn hwfn,
		{
		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;