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 5.10-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-5.10 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 @@ -127,6 +127,12 @@ 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 @@ -182,14 +188,14 @@ 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. */ @@ -303,6 +309,11 @@ 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-5.10/fbcon-check-font-dimension-limits.patch queue-5.10/parisc-wire-up-ptrace_getregs-ptrace_setregs-for-compat-case.patch queue-5.10/parisc-fix-return-code-of-pdc_iodc_print.patch