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| author | Helge Deller <deller@gmx.de> | 2023-02-01 16:41:54 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2023-02-01 21:42:37 +0100 |
| commit | 316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e (patch) | |
| tree | c7e283e79d1f98b4092cf4b524c5428cb90eee6c /arch | |
| parent | 3f0c17809a098d3f0c1ec83f1fb3ca61638d3dcd (diff) | |
| download | lwn-316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e.tar.gz lwn-316f1f42b5cc1d95124c1f0387c867c1ba7b6d0e.zip | |
parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case
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+
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 31735e982b6b..ceb45f51d52e 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -126,6 +126,12 @@ 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 @@ -181,14 +187,14 @@ 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. */ @@ -302,6 +308,11 @@ 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); |