The patch titled
Subject: ia64: ptrace: user_regset_copyin_ignore() always returns 0
has been added to the -mm mm-nonmm-unstable branch. Its filename is
ia64-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/ia64-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: ia64: ptrace: user_regset_copyin_ignore() always returns 0
Date: Sat, 15 Oct 2022 00:22:27 +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/20221014212235.10770-6-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/ia64/kernel/ptrace.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
--- a/arch/ia64/kernel/ptrace.c~ia64-ptrace-user_regset_copyin_ignore-always-returns-0
+++ a/arch/ia64/kernel/ptrace.c
@@ -1481,12 +1481,10 @@ static void do_gpregs_set(struct unw_fra
return;
/* Skip r0 */
if (dst->pos < ELF_GR_OFFSET(1)) {
- dst->ret = user_regset_copyin_ignore(&dst->pos, &dst->count,
- &dst->u.set.kbuf,
- &dst->u.set.ubuf,
- 0, ELF_GR_OFFSET(1));
- if (dst->ret)
- return;
+ user_regset_copyin_ignore(&dst->pos, &dst->count,
+ &dst->u.set.kbuf, &dst->u.set.ubuf,
+ 0, ELF_GR_OFFSET(1));
+ dst->ret = 0;
}
while (dst->count && dst->pos < ELF_AR_END_OFFSET) {
@@ -1560,11 +1558,11 @@ static void do_fpregs_set(struct unw_fra
/* Skip pos 0 and 1 */
if (dst->count > 0 && dst->pos < ELF_FP_OFFSET(2)) {
- dst->ret = user_regset_copyin_ignore(&dst->pos, &dst->count,
- &dst->u.set.kbuf,
- &dst->u.set.ubuf,
- 0, ELF_FP_OFFSET(2));
- if (dst->count == 0 || dst->ret)
+ user_regset_copyin_ignore(&dst->pos, &dst->count,
+ &dst->u.set.kbuf, &dst->u.set.ubuf,
+ 0, ELF_FP_OFFSET(2));
+ dst->ret = 0;
+ if (dst->count == 0)
return;
}
_
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
