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Return EFAULT when the address is not a kernel virtual address.

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This commit is contained in:
Marcel Moolenaar 2013-02-16 21:46:27 +00:00
parent 7a4accc1f0
commit cb35030ab3
1 changed files with 2 additions and 0 deletions
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2
sys/ia64/ia64/mem.c
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@ -128,6 +128,8 @@ memrw(struct cdev *dev, struct uio *uio, int flags)
*/
addr = trunc_page(v);
eaddr = round_page(v + c);
if (addr < VM_MAXUSER_ADDRESS)
return (EFAULT);
for (; addr < eaddr; addr += PAGE_SIZE) {
if (pmap_kextract(addr) == 0)
return (EFAULT);