The patch titled
Subject: arc: ptrace: user_regset_copyin_ignore() always returns 0
has been added to the -mm mm-nonmm-unstable branch. Its filename is
arc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sergey Shtylyov <s.shtylyov@xxxxxx>
Subject: arc: ptrace: user_regset_copyin_ignore() always returns 0
Date: Sat, 15 Oct 2022 00:22:23 +0300
Patch series "Make user_regset_copyin_ignore() *void*".
user_regset_copyin_ignore() apparently cannot fail and so always returns 0.
Let's first remove the result checks in several architectures that call this
function and then make user_regset_copyin_ignore() return *void* instead of
*int*...
This patch (of 13):
user_regset_copyin_ignore() always returns 0, so checking its result seems
pointless -- don't do this anymore...
Link: https://lkml.kernel.org/r/20221014212235.10770-1-s.shtylyov@xxxxxx
Link: https://lkml.kernel.org/r/20221014212235.10770-2-s.shtylyov@xxxxxx
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
Cc: Brian Cain <bcain@xxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> # powerpc
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Dinh Nguyen <dinguyen@xxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Stafford Horne <shorne@xxxxxxxxx>
Cc: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arc/kernel/ptrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arc/kernel/ptrace.c~arc-ptrace-user_regset_copyin_ignore-always-returns-0
+++ a/arch/arc/kernel/ptrace.c
@@ -185,7 +185,7 @@ static int genregs_set(struct task_struc
#define REG_IGNORE_ONE(LOC) \
if (!ret) \
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, \
offsetof(struct user_regs_struct, LOC), \
offsetof(struct user_regs_struct, LOC) + 4);
_
Patches currently in -mm which might be from s.shtylyov@xxxxxx are
arc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
arm-ptrace-user_regset_copyin_ignore-always-returns-0.patch
arm64-ptrace-user_regset_copyin_ignore-always-returns-0.patch
hexagon-ptrace-user_regset_copyin_ignore-always-returns-0.patch
ia64-ptrace-user_regset_copyin_ignore-always-returns-0.patch
mips-ptrace-user_regset_copyin_ignore-always-returns-0.patch
nios2-ptrace-user_regset_copyin_ignore-always-returns-0.patch
openrisc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
parisc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
powerpc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
sh-ptrace-user_regset_copyin_ignore-always-returns-0.patch
sparc-ptrace-user_regset_copyin_ignore-always-returns-0.patch
regset-make-user_regset_copyin_ignore-void.patch
