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| author | Helge Deller <deller@gmx.de> | 2023-02-01 16:41:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-15 17:22:19 +0100 |
| commit | 71a4f39f99e85cf6bb140af6322a4364e81cf1f6 (patch) | |
| tree | 83654ca6c0488cd272aeb4a7ccef448cfbf06ac6 /arch | |
| parent | 2982b473d764b4d02a40c84246a2d576d411427d (diff) | |
| download | linux-71a4f39f99e85cf6bb140af6322a4364e81cf1f6.tar.gz linux-71a4f39f99e85cf6bb140af6322a4364e81cf1f6.tar.bz2 linux-71a4f39f99e85cf6bb140af6322a4364e81cf1f6.zip | |
parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case
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@gmx.de>
Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/parisc/kernel/ptrace.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index 2127974982df..df9b9f0591bf 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -127,6 +127,12 @@ long arch_ptrace(struct task_struct *child, long request, 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 *child, long request, 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_struct *child, compat_long_t request, } } 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); |