This is a note to let you know that I've just added the patch titled
parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-wire-up-ptrace_getregs-ptrace_setregs-for-compat-case.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Wed, 1 Feb 2023 16:41:54 +0100
Subject: parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case
From: Helge Deller <deller@xxxxxx>
commit 316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e upstream.
Wire up the missing ptrace requests PTRACE_GETREGS, PTRACE_SETREGS,
PTRACE_GETFPREGS and PTRACE_SETFPREGS when running 32-bit applications
on 64-bit kernels.
Signed-off-by: Helge Deller <deller@xxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 4.7+
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/kernel/ptrace.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
--- a/arch/parisc/kernel/ptrace.c
+++ b/arch/parisc/kernel/ptrace.c
@@ -128,6 +128,12 @@ long arch_ptrace(struct task_struct *chi
unsigned long tmp;
long ret = -EIO;
+ unsigned long user_regs_struct_size = sizeof(struct user_regs_struct);
+#ifdef CONFIG_64BIT
+ if (is_compat_task())
+ user_regs_struct_size /= 2;
+#endif
+
switch (request) {
/* Read the word at location addr in the USER area. For ptraced
@@ -183,14 +189,14 @@ long arch_ptrace(struct task_struct *chi
return copy_regset_to_user(child,
task_user_regset_view(current),
REGSET_GENERAL,
- 0, sizeof(struct user_regs_struct),
+ 0, user_regs_struct_size,
datap);
case PTRACE_SETREGS: /* Set all gp regs in the child. */
return copy_regset_from_user(child,
task_user_regset_view(current),
REGSET_GENERAL,
- 0, sizeof(struct user_regs_struct),
+ 0, user_regs_struct_size,
datap);
case PTRACE_GETFPREGS: /* Get the child FPU state. */
@@ -304,6 +310,11 @@ long compat_arch_ptrace(struct task_stru
}
}
break;
+ case PTRACE_GETREGS:
+ case PTRACE_SETREGS:
+ case PTRACE_GETFPREGS:
+ case PTRACE_SETFPREGS:
+ return arch_ptrace(child, request, addr, data);
default:
ret = compat_ptrace_request(child, request, addr, data);
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-4.19/fbcon-check-font-dimension-limits.patch
queue-4.19/parisc-wire-up-ptrace_getregs-ptrace_setregs-for-compat-case.patch
queue-4.19/parisc-fix-return-code-of-pdc_iodc_print.patch
