linux-kernel - [PATCH 4.9 28/83] parisc: Fix exported address of os

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: <20181119162618.055170007@linuxfoundation.org>
Date:   Mon, 19 Nov 2018 17:28:54 +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, Helge Deller <deller@....de>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 28/83] parisc: Fix exported address of os_hpmc handler

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

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

[ Upstream commit 99a3ae51d557d8e38a7aece65678a31f9db215ee ]

In the C-code we need to put the physical address of the hpmc handler in
the interrupt vector table (IVA) in order to get HPMCs working.  Since
on parisc64 function pointers are indirect (in fact they are function
descriptors) we instead export the address as variable and not as
function.

This reverts a small part of commit f39cce654f9a ("parisc: Add
cfi_startproc and cfi_endproc to assembly code").

Signed-off-by: Helge Deller <deller@....de>
Cc: <stable@...r.kernel.org>    [4.9+]
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/parisc/kernel/hpmc.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/parisc/kernel/hpmc.S b/arch/parisc/kernel/hpmc.S
index 407b3aa5aa07..e88f4e7f39f3 100644
--- a/arch/parisc/kernel/hpmc.S
+++ b/arch/parisc/kernel/hpmc.S
@@ -84,7 +84,7 @@ END(hpmc_pim_data)
 
 	.import intr_save, code
 	.align 16
-ENTRY_CFI(os_hpmc)
+ENTRY(os_hpmc)
 .os_hpmc:
 
 	/*
@@ -301,7 +301,6 @@ os_hpmc_6:
 	b .
 	nop
 	.align 16	/* make function length multiple of 16 bytes */
-ENDPROC_CFI(os_hpmc)
 .os_hpmc_end:
 
 
-- 
2.17.1