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.kratoch...@redhat.com> Signed-off-by: Oleg Nesterov <o...@redhat.com> --- arch/powerpc/kernel/ptrace/ptrace-tm.c | 8 +++++++- arch/powerpc/kernel/ptrace/ptrace-view.c | 8 +++++++- 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/ptrace/ptrace-tm.c b/arch/powerpc/kernel/ptrace/ptrace-tm.c index f8fcbd85d4cb..d0d339f86e61 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-tm.c +++ b/arch/powerpc/kernel/ptrace/ptrace-tm.c @@ -87,6 +87,10 @@ 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; @@ -102,7 +106,9 @@ int tm_cgpr_get(struct task_struct *target, const struct user_regset *regset, 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 39686ede40b3..f554ccfcbfae 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-view.c +++ b/arch/powerpc/kernel/ptrace/ptrace-view.c @@ -218,6 +218,10 @@ 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) @@ -233,7 +237,9 @@ static int gpr_get(struct task_struct *target, const struct user_regset *regset, 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)); } -- 2.25.1.362.g51ebf55
