diff options
Diffstat (limited to 'arch/x86/ia32/ia32_signal.c')
-rw-r--r-- | arch/x86/ia32/ia32_signal.c | 39 |
1 files changed, 12 insertions, 27 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 799ca5b31b87..7018c2c325a1 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -236,7 +236,6 @@ int ia32_setup_frame(int sig, struct ksignal *ksig, { struct sigframe_ia32 __user *frame; void __user *restorer; - int err = 0; void __user *fp = NULL; /* copy_to_user optimizes that into a single 8 byte store */ @@ -252,21 +251,6 @@ int ia32_setup_frame(int sig, struct ksignal *ksig, frame = get_sigframe(ksig, regs, sizeof(*frame), &fp); - if (!access_ok(frame, sizeof(*frame))) - return -EFAULT; - - if (__put_user(sig, &frame->sig)) - return -EFAULT; - - if (!user_access_begin(&frame->sc, sizeof(struct sigcontext_32))) - return -EFAULT; - - unsafe_put_sigcontext32(&frame->sc, fp, regs, set, Efault); - user_access_end(); - - if (__put_user(set->sig[1], &frame->extramask[0])) - return -EFAULT; - if (ksig->ka.sa.sa_flags & SA_RESTORER) { restorer = ksig->ka.sa.sa_restorer; } else { @@ -278,19 +262,20 @@ int ia32_setup_frame(int sig, struct ksignal *ksig, restorer = &frame->retcode; } - put_user_try { - put_user_ex(ptr_to_compat(restorer), &frame->pretcode); - - /* - * These are actually not used anymore, but left because some - * gdb versions depend on them as a marker. - */ - put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode); - } put_user_catch(err); - - if (err) + if (!user_access_begin(frame, sizeof(*frame))) return -EFAULT; + unsafe_put_user(sig, &frame->sig, Efault); + unsafe_put_sigcontext32(&frame->sc, fp, regs, set, Efault); + unsafe_put_user(set->sig[1], &frame->extramask[0], Efault); + unsafe_put_user(ptr_to_compat(restorer), &frame->pretcode, Efault); + /* + * These are actually not used anymore, but left because some + * gdb versions depend on them as a marker. + */ + unsafe_put_user(*((u64 *)&code), (u64 __user *)frame->retcode, Efault); + user_access_end(); + /* Set up registers for signal handler */ regs->sp = (unsigned long) frame; regs->ip = (unsigned long) ksig->ka.sa.sa_handler; |