The patch titled
Subject: powerpc: ptrace: user_regset_copyin_ignore() always returns 0
has been added to the -mm mm-nonmm-unstable branch. Its filename is
powerpc-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/powerpc-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: powerpc: ptrace: user_regset_copyin_ignore() always returns 0
Date: Sat, 15 Oct 2022 00:22:32 +0300
user_regset_copyin_ignore() always returns 0, so checking its result seems
pointless -- don't do this anymore...
Link: https://lkml.kernel.org/r/20221014212235.10770-11-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>
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/powerpc/kernel/ptrace/ptrace-tm.c | 10 +++++-----
arch/powerpc/kernel/ptrace/ptrace-view.c | 10 +++++-----
2 files changed, 10 insertions(+), 10 deletions(-)
--- a/arch/powerpc/kernel/ptrace/ptrace-tm.c~powerpc-ptrace-user_regset_copyin_ignore-always-returns-0
+++ a/arch/powerpc/kernel/ptrace/ptrace-tm.c
@@ -170,9 +170,9 @@ int tm_cgpr_set(struct task_struct *targ
(PT_MAX_PUT_REG + 1) * sizeof(reg));
if (PT_MAX_PUT_REG + 1 < PT_TRAP && !ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- (PT_MAX_PUT_REG + 1) * sizeof(reg),
- PT_TRAP * sizeof(reg));
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ (PT_MAX_PUT_REG + 1) * sizeof(reg),
+ PT_TRAP * sizeof(reg));
if (!ret && count > 0) {
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, ®,
@@ -183,8 +183,8 @@ int tm_cgpr_set(struct task_struct *targ
}
if (!ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- (PT_TRAP + 1) * sizeof(reg), -1);
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ (PT_TRAP + 1) * sizeof(reg), -1);
return ret;
}
--- a/arch/powerpc/kernel/ptrace/ptrace-view.c~powerpc-ptrace-user_regset_copyin_ignore-always-returns-0
+++ a/arch/powerpc/kernel/ptrace/ptrace-view.c
@@ -267,9 +267,9 @@ static int gpr_set(struct task_struct *t
(PT_MAX_PUT_REG + 1) * sizeof(reg));
if (PT_MAX_PUT_REG + 1 < PT_TRAP && !ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- (PT_MAX_PUT_REG + 1) * sizeof(reg),
- PT_TRAP * sizeof(reg));
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ (PT_MAX_PUT_REG + 1) * sizeof(reg),
+ PT_TRAP * sizeof(reg));
if (!ret && count > 0) {
ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, ®,
@@ -280,8 +280,8 @@ static int gpr_set(struct task_struct *t
}
if (!ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- (PT_TRAP + 1) * sizeof(reg), -1);
+ user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
+ (PT_TRAP + 1) * sizeof(reg), -1);
return ret;
}
_
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
