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mn10300: finish verify_area() off

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2016-09-03 18:05:00 -04:00
parent 08435d89dd
commit 81029b1f77
2 changed files with 3 additions and 9 deletions
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6
arch/mn10300/include/asm/uaccess.h
View File

@ -72,12 +72,6 @@ static inline int ___range_ok(unsigned long addr, unsigned int size)
#define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0)
#define __access_ok(addr, size) (__range_ok((addr), (size)) == 0)
static inline int verify_area(int type, const void *addr, unsigned long size)
{
return access_ok(type, addr, size) ? 0 : -EFAULT;
}
/*
* The exception table consists of pairs of addresses: the first is the
* address of an instruction that is allowed to fault, and the second is

6
arch/mn10300/kernel/signal.c
View File

@ -75,7 +75,7 @@ static int restore_sigcontext(struct pt_regs *regs,
struct fpucontext *buf;
err |= __get_user(buf, &sc->fpucontext);
if (buf) {
if (verify_area(VERIFY_READ, buf, sizeof(*buf)))
if (!access_ok(VERIFY_READ, buf, sizeof(*buf)))
goto badframe;
err |= fpu_restore_sigcontext(buf);
}
@ -98,7 +98,7 @@ asmlinkage long sys_sigreturn(void)
long d0;
frame = (struct sigframe __user *) current_frame()->sp;
if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
if (__get_user(set.sig[0], &frame->sc.oldmask))
goto badframe;
@ -130,7 +130,7 @@ asmlinkage long sys_rt_sigreturn(void)
long d0;
frame = (struct rt_sigframe __user *) current_frame()->sp;
if (verify_area(VERIFY_READ, frame, sizeof(*frame)))
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
goto badframe;
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;