linux-kernel - [PATCH 4.13 25/28] staging: ccree: fix 64 bit scatter/gather DMA ops

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

Message-Id: <20171119144312.890462088@linuxfoundation.org>
Date:   Sun, 19 Nov 2017 15:44:12 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Stuart Yoder <stuart.yoder@....com>,
        Gilad Ben-Yossef <gilad@...yossef.com>
Subject: [PATCH 4.13 25/28] staging: ccree: fix 64 bit scatter/gather DMA ops

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gilad Ben-Yossef <gilad@...yossef.com>

commit e0b3f39092a1cff5548cbaf40096ec25e7721de6 upstream.

Fix a wrong offset used in splitting a 64 DMA address to MSB/LSB
parts needed for scatter/gather HW descriptors causing operations
relying on them to fail on 64 bit platforms.

Fixes: c6f7f2f4591f ("staging: ccree: refactor LLI access macros")
Reported-by: Stuart Yoder <stuart.yoder@....com>
Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/ccree/cc_lli_defs.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/ccree/cc_lli_defs.h
+++ b/drivers/staging/ccree/cc_lli_defs.h
@@ -59,7 +59,7 @@ static inline void cc_lli_set_addr(u32 *
 	lli_p[LLI_WORD0_OFFSET] = (addr & U32_MAX);
 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
 	lli_p[LLI_WORD1_OFFSET] &= ~LLI_HADDR_MASK;
-	lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 16));
+	lli_p[LLI_WORD1_OFFSET] |= FIELD_PREP(LLI_HADDR_MASK, (addr >> 32));
 #endif /* CONFIG_ARCH_DMA_ADDR_T_64BIT */
 }