diff options
| author | Shi Weihua <shiwh@cn.fujitsu.com> | 2007-12-03 05:57:50 +0100 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-12-08 01:10:59 +0100 |
| commit | b9ab117c2f2eac8432def6a2ea03711bfa7f35d5 (patch) | |
| tree | 28dc232ed814d137ad3db21759054420e41e526c /arch/ia64/kernel/signal.c | |
| parent | [IA64] export copy_page() to modules (diff) | |
| download | linux-b9ab117c2f2eac8432def6a2ea03711bfa7f35d5.tar.xz linux-b9ab117c2f2eac8432def6a2ea03711bfa7f35d5.zip | |
[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 <shiwh@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/signal.c')
| -rw-r--r-- | arch/ia64/kernel/signal.c | 8 |
1 files changed, 4 insertions, 4 deletions
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); |