linux-kernel - [RESEND PATCH] iommu/rockchip: fix zap cache during device attach

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20160601154610.22899-1-john@metanate.com>
Date:	Wed,  1 Jun 2016 16:46:10 +0100
From:	John Keeping <john@...anate.com>
To:	Joerg Roedel <joro@...tes.org>
Cc:	Heiko Stuebner <heiko@...ech.de>, iommu@...ts.linux-foundation.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	John Keeping <john@...anate.com>, stable@...r.kernel.org
Subject: [RESEND PATCH] iommu/rockchip: fix zap cache during device attach

rk_iommu_command() takes a struct rk_iommu and iterates over the slave
MMUs, so this is doubly wrong in that we're passing in the wrong pointer
and talking to MMUs that we shouldn't be.

Fixes: cd6438c5f844 ("iommu/rockchip: Reconstruct to support multi slaves")
Cc: stable@...r.kernel.org
Signed-off-by: John Keeping <john@...anate.com>
Tested-by: Heiko Stuebner <heiko@...ech.de>
Reviewed-by: Heiko Stuebner <heiko@...ech.de>
---
The original was sent just before the merge window [0].  The only
changes are to the commit message:

* add Cc: stable
* add Heiko's {Tested,Reviewed}-by

[0] http://article.gmane.org/gmane.linux.kernel.iommu/13556

 drivers/iommu/rockchip-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index c7d6156ff536..25b4627cb57f 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -815,7 +815,7 @@ static int rk_iommu_attach_device(struct iommu_domain *domain,
 	dte_addr = virt_to_phys(rk_domain->dt);
 	for (i = 0; i < iommu->num_mmu; i++) {
 		rk_iommu_write(iommu->bases[i], RK_MMU_DTE_ADDR, dte_addr);
-		rk_iommu_command(iommu->bases[i], RK_MMU_CMD_ZAP_CACHE);
+		rk_iommu_base_command(iommu->bases[i], RK_MMU_CMD_ZAP_CACHE);
 		rk_iommu_write(iommu->bases[i], RK_MMU_INT_MASK, RK_MMU_IRQ_MASK);
 	}
 
-- 
2.8.2.565.gdb84f68.dirty