diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 8d64c1bc84743bf8e04a8435eb8cf9becd927369..5f42cfcc1c5ad512f3176ca1183df05de8cfd748 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -444,21 +444,21 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= __put_user(sig, &frame->sig); if (err) - goto give_sigsegv; + return -EFAULT; err |= ia32_setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_COMPAT_NSIG_WORDS > 1) { err |= __copy_to_user(frame->extramask, &set->sig[1], sizeof(frame->extramask)); if (err) - goto give_sigsegv; + return -EFAULT; } if (ka->sa.sa_flags & SA_RESTORER) { @@ -479,7 +479,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, */ err |= __copy_to_user(frame->retcode, &code, 8); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->sp = (unsigned long) frame; @@ -502,10 +502,6 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, @@ -533,14 +529,14 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= __put_user(sig, &frame->sig); err |= __put_user(ptr_to_compat(&frame->info), &frame->pinfo); err |= __put_user(ptr_to_compat(&frame->uc), &frame->puc); err |= copy_siginfo_to_user32(&frame->info, info); if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ if (cpu_has_xsave) @@ -556,7 +552,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; if (ka->sa.sa_flags & SA_RESTORER) restorer = ka->sa.sa_restorer; @@ -571,7 +567,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, */ err |= __copy_to_user(frame->retcode, &code, 8); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->sp = (unsigned long) frame; @@ -599,8 +595,4 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c index b668efc18eae4b671f99d92a44a6b4371fb0944a..1c22e0067fe75a9f7575e603098628f2ba58ebff 100644 --- a/arch/x86/kernel/signal_32.c +++ b/arch/x86/kernel/signal_32.c @@ -349,21 +349,21 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err = __put_user(sig, &frame->sig); if (err) - goto give_sigsegv; + return -EFAULT; err = setup_sigcontext(&frame->sc, fpstate, regs, set->sig[0]); if (err) - goto give_sigsegv; + return -EFAULT; if (_NSIG_WORDS > 1) { err = __copy_to_user(&frame->extramask, &set->sig[1], sizeof(frame->extramask)); if (err) - goto give_sigsegv; + return -EFAULT; } if (current->mm->context.vdso) @@ -388,7 +388,7 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, err |= __put_user(0x80cd, (short __user *)(frame->retcode+6)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->sp = (unsigned long)frame; @@ -403,10 +403,6 @@ __setup_frame(int sig, struct k_sigaction *ka, sigset_t *set, regs->cs = __USER_CS; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, @@ -420,14 +416,14 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, frame = get_sigframe(ka, regs, sizeof(*frame), &fpstate); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; err |= __put_user(sig, &frame->sig); err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); err |= copy_siginfo_to_user(&frame->info, info); if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ if (cpu_has_xsave) @@ -443,7 +439,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. */ restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn); @@ -463,7 +459,7 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(0x80cd, (short __user *)(frame->retcode+5)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->sp = (unsigned long)frame; @@ -478,10 +474,6 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->cs = __USER_CS; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* @@ -506,6 +498,11 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, else ret = __setup_frame(usig, ka, set, regs); + if (ret) { + force_sigsegv(sig, current); + return -EFAULT; + } + return ret; } diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c index 43e6862fc7a2c98e156dbc9d4ed1c7d6c2c69090..3b79e179ba3ae10a18c8be20a6e57edac35bb989 100644 --- a/arch/x86/kernel/signal_64.c +++ b/arch/x86/kernel/signal_64.c @@ -215,12 +215,12 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, frame = get_stack(ka, regs, sizeof(struct rt_sigframe)) - 8; if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; if (ka->sa.sa_flags & SA_SIGINFO) { err |= copy_siginfo_to_user(&frame->info, info); if (err) - goto give_sigsegv; + return -EFAULT; } /* Create the ucontext. */ @@ -248,11 +248,11 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, err |= __put_user(ka->sa.sa_restorer, &frame->pretcode); } else { /* could use a vstub here */ - goto give_sigsegv; + return -EFAULT; } if (err) - goto give_sigsegv; + return -EFAULT; /* Set up registers for signal handler */ regs->di = sig; @@ -272,10 +272,6 @@ static int __setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->cs = __USER_CS; return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } /* @@ -297,6 +293,11 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, #endif ret = __setup_rt_frame(sig, ka, info, set, regs); + if (ret) { + force_sigsegv(sig, current); + return -EFAULT; + } + return ret; }