diff options
Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index 7a76ee48a95..995f8543cb5 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -676,10 +676,8 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5, if (restore_sigcontext(regs, NULL, 1, &uc->uc_mcontext)) goto badframe; - /* do_sigaltstack expects a __user pointer and won't modify - * what's in there anyway - */ - do_sigaltstack(&uc->uc_stack, NULL, regs->gpr[1]); + if (restore_altstack(&uc->uc_stack)) + goto badframe; set_thread_flag(TIF_RESTOREALL); return 0; @@ -723,10 +721,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info, /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(regs->gpr[1]), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= __save_altstack(&frame->uc.uc_stack, regs->gpr[1]); #ifdef CONFIG_PPC_TRANSACTIONAL_MEM if (MSR_TM_ACTIVE(regs->msr)) { /* The ucontext_t passed to userland points to the second |