From b9ab117c2f2eac8432def6a2ea03711bfa7f35d5 Mon Sep 17 00:00:00 2001 From: Shi Weihua Date: Mon, 3 Dec 2007 12:57:50 +0800 Subject: [IA64] signal : fix missing error checkings Not all the return value of __copy_from_user and __put_user is checked.This patch fixed it. Signed-off-by: Shi Weihua Signed-off-by: Tony Luck --- arch/ia64/kernel/signal.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'arch') diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index cdb64cc4d9c8..4c730099d58f 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -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); -- cgit v1.2.3