diff options
Diffstat (limited to 'arch/sparc/kernel/sigutil_32.c')
| -rw-r--r-- | arch/sparc/kernel/sigutil_32.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/sparc/kernel/sigutil_32.c b/arch/sparc/kernel/sigutil_32.c index 0f6eebe71e6c..f25c6daa9f52 100644 --- a/arch/sparc/kernel/sigutil_32.c +++ b/arch/sparc/kernel/sigutil_32.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/kernel.h> #include <linux/types.h> #include <linux/thread_info.h> @@ -48,6 +49,10 @@ int save_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu) int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu) { int err; + + if (((unsigned long) fpu) & 3) + return -EFAULT; + #ifdef CONFIG_SMP if (test_tsk_thread_flag(current, TIF_USEDFPU)) regs->psr &= ~PSR_EF; @@ -60,7 +65,7 @@ int restore_fpu_state(struct pt_regs *regs, __siginfo_fpu_t __user *fpu) set_used_math(); clear_tsk_thread_flag(current, TIF_USEDFPU); - if (!access_ok(VERIFY_READ, fpu, sizeof(*fpu))) + if (!access_ok(fpu, sizeof(*fpu))) return -EFAULT; err = __copy_from_user(¤t->thread.float_regs[0], &fpu->si_float_regs[0], @@ -97,7 +102,10 @@ int restore_rwin_state(__siginfo_rwin_t __user *rp) struct thread_info *t = current_thread_info(); int i, wsaved, err; - __get_user(wsaved, &rp->wsaved); + if (((unsigned long) rp) & 3) + return -EFAULT; + + get_user(wsaved, &rp->wsaved); if (wsaved > NSWINS) return -EFAULT; |