diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2020-11-19 17:02:47 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-11-26 22:05:42 +1100 |
| commit | 324a69467f12652b21b17f9644faa967d3d8bbdf (patch) | |
| tree | 6fb3c4f7b5f152ee9a0b3dce7c936a40c321e8fe /arch/powerpc/kernel/ptrace | |
| parent | 640586f8af356096e084d69a9909d217852bde48 (diff) | |
powerpc/ptrace: Hard wire PT_SOFTE value to 1 in gpr_get() too
The commit a8a4b03ab95f ("powerpc: Hard wire PT_SOFTE value to 1 in
ptrace & signals") changed ptrace_get_reg(PT_SOFTE) to report 0x1,
but PTRACE_GETREGS still copies pt_regs->softe as is.
This is not consistent and this breaks the user-regs-peekpoke test
from https://sourceware.org/systemtap/wiki/utrace/tests/
Reported-by: Jan Kratochvil <jan.kratochvil@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201119160247.GB5188@redhat.com
Diffstat (limited to 'arch/powerpc/kernel/ptrace')
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-tm.c | 7 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-view.c | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/ptrace/ptrace-tm.c b/arch/powerpc/kernel/ptrace/ptrace-tm.c index f15cbbab45b7..44045363a903 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-tm.c +++ b/arch/powerpc/kernel/ptrace/ptrace-tm.c @@ -87,6 +87,9 @@ int tm_cgpr_get(struct task_struct *target, const struct user_regset *regset, struct membuf to) { struct membuf to_msr = membuf_at(&to, offsetof(struct pt_regs, msr)); +#ifdef CONFIG_PPC64 + struct membuf to_softe = membuf_at(&to, offsetof(struct pt_regs, softe)); +#endif if (!cpu_has_feature(CPU_FTR_TM)) return -ENODEV; @@ -101,7 +104,9 @@ int tm_cgpr_get(struct task_struct *target, const struct user_regset *regset, membuf_write(&to, &target->thread.ckpt_regs, sizeof(struct user_pt_regs)); membuf_store(&to_msr, get_user_ckpt_msr(target)); - +#ifdef CONFIG_PPC64 + membuf_store(&to_softe, 0x1ul); +#endif return membuf_zero(&to, ELF_NGREG * sizeof(unsigned long) - sizeof(struct user_pt_regs)); } diff --git a/arch/powerpc/kernel/ptrace/ptrace-view.c b/arch/powerpc/kernel/ptrace/ptrace-view.c index 299e0b6d709d..142d58337f40 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-view.c +++ b/arch/powerpc/kernel/ptrace/ptrace-view.c @@ -218,6 +218,9 @@ static int gpr_get(struct task_struct *target, const struct user_regset *regset, struct membuf to) { struct membuf to_msr = membuf_at(&to, offsetof(struct pt_regs, msr)); +#ifdef CONFIG_PPC64 + struct membuf to_softe = membuf_at(&to, offsetof(struct pt_regs, softe)); +#endif int i; if (target->thread.regs == NULL) @@ -232,7 +235,9 @@ static int gpr_get(struct task_struct *target, const struct user_regset *regset, membuf_write(&to, target->thread.regs, sizeof(struct user_pt_regs)); membuf_store(&to_msr, get_user_msr(target)); - +#ifdef CONFIG_PPC64 + membuf_store(&to_softe, 0x1ul); +#endif return membuf_zero(&to, ELF_NGREG * sizeof(unsigned long) - sizeof(struct user_pt_regs)); } |