linux-kernel - Re: metag build error in -next due to 'fs, elf: drop MAP_FIXED usage from elf

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Date:   Sun, 7 Jan 2018 09:50:31 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     James Hogan <jhogan@...nel.org>, linux-metag@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: metag build error in -next due to 'fs, elf: drop MAP_FIXED usage
 from elf_map'

On Sat 06-01-18 17:07:33, Guenter Roeck wrote:
> The following build error is seen when building metag:meta2_defconfig
> or metag:tz1090_defconfig.
> 
> arch/metag/kernel/process.c: In function '__metag_elf_map':
> arch/metag/kernel/process.c:421: error: 'tsk' undeclared

Sorry about that and thanks for your report. The following should fix
the issue. Andrew, could you fold it to the original patch please?
---
>From 64da2e0c134ecf3936a4c36b949bcf2cdc98977e Mon Sep 17 00:00:00 2001
From: Michal Hocko <mhocko@...e.com>
Date: Sun, 7 Jan 2018 09:47:41 +0100
Subject: [PATCH] fs-elf-drop-map_fixed-usage-from-elf_map-fix-fix

The following build error is seen when building metag:meta2_defconfig
or metag:tz1090_defconfig.

arch/metag/kernel/process.c: In function '__metag_elf_map':
arch/metag/kernel/process.c:421: error: 'tsk' undeclared

Reported-by: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Michal Hocko <mhocko@...e.com>
---
 arch/metag/kernel/process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/metag/kernel/process.c b/arch/metag/kernel/process.c
index 9e007195038d..0cca2c95a091 100644
--- a/arch/metag/kernel/process.c
+++ b/arch/metag/kernel/process.c
@@ -419,7 +419,7 @@ unsigned long __metag_elf_map(struct file *filep, unsigned long addr,
 
 	if ((type & MAP_FIXED_NOREPLACE) && BAD_ADDR(map_addr))
 		pr_info("%d (%s): Uhuuh, elf segment at %p requested but the memory is mapped already\n",
-				task_pid_nr(current), tsk->comm, (void *)addr);
+				task_pid_nr(current), current->comm, (void *)addr);
 
 	if (!BAD_ADDR(map_addr) && tcm_tag != TCM_INVALID_TAG) {
 		struct tcm_allocation *tcm;
-- 
2.15.1

-- 
Michal Hocko
SUSE Labs