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[IA64] signal : fix missing error checkings

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Not all the return value of __copy_from_user and
__put_user is checked.This patch fixed it.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Shi Weihua 2007-12-03 12:57:50 +08:00 committed by Tony Luck
parent bdc2619ab9
commit b9ab117c2f
1 changed files with 4 additions and 4 deletions
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8
arch/ia64/kernel/signal.c
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@ -98,7 +98,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr)
if ((flags & IA64_SC_FLAG_FPH_VALID) != 0) {
struct ia64_psr *psr = ia64_psr(&scr->pt);
__copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16);
err |= __copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16);
psr->mfh = 0; /* drop signal handler's fph contents... */
preempt_disable();
if (psr->dfh)
@ -244,7 +244,7 @@ static long
setup_sigcontext (struct sigcontext __user *sc, sigset_t *mask, struct sigscratch *scr)
{
unsigned long flags = 0, ifs, cfm, nat;
long err;
long err = 0;
ifs = scr->pt.cr_ifs;
@ -257,12 +257,12 @@ setup_sigcontext (struct sigcontext __user *sc, sigset_t *mask, struct sigscratc
ia64_flush_fph(current);
if ((current->thread.flags & IA64_THREAD_FPH_VALID)) {
flags |= IA64_SC_FLAG_FPH_VALID;
__copy_to_user(&sc->sc_fr[32], current->thread.fph, 96*16);
err = __copy_to_user(&sc->sc_fr[32], current->thread.fph, 96*16);
}
nat = ia64_get_scratch_nat_bits(&scr->pt, scr->scratch_unat);
err = __put_user(flags, &sc->sc_flags);
err |= __put_user(flags, &sc->sc_flags);
err |= __put_user(nat, &sc->sc_nat);
err |= PUT_SIGSET(mask, &sc->sc_mask);
err |= __put_user(cfm, &sc->sc_cfm);