This is a note to let you know that I've just added the patch titled
qed: Correct doorbell configuration for !4Kb pages
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: qed-correct-doorbell-configuration-for-4kb-pages.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 Mon Apr 9 17:09:24 CEST 2018
From: Ram Amrani Ram.Amrani@cavium.com Date: Tue, 9 May 2017 15:07:50 +0300 Subject: qed: Correct doorbell configuration for !4Kb pages
From: Ram Amrani Ram.Amrani@cavium.com
[ Upstream commit a82dadbce47395747824971db08a128130786fdc ]
When configuring the doorbell DPI address, driver aligns the start address to 4KB [HW-pages] instead of host PAGE_SIZE. As a result, RoCE applications might receive addresses which are unaligned to pages [when PAGE_SIZE > 4KB], which is a security risk.
Fixes: 51ff17251c9c ("qed: Add support for RoCE hw init") Signed-off-by: Ram Amrani Ram.Amrani@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@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/qlogic/qed/qed_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -850,7 +850,7 @@ qed_hw_init_pf_doorbell_bar(struct qed_h NULL) + qed_cxt_get_proto_cid_count(p_hwfn, PROTOCOLID_ETH, NULL); - norm_regsize = roundup(QED_PF_DEMS_SIZE * non_pwm_conn, 4096); + norm_regsize = roundup(QED_PF_DEMS_SIZE * non_pwm_conn, PAGE_SIZE); min_addr_reg1 = norm_regsize / 4096; pwm_regsize = db_bar_size - norm_regsize;
Patches currently in stable-queue which might be from Ram.Amrani@cavium.com are
queue-4.9/qed-correct-doorbell-configuration-for-4kb-pages.patch