diff options
Diffstat (limited to 'arch/sh/kernel/sys_sh.c')
| -rw-r--r-- | arch/sh/kernel/sys_sh.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index 58dfc02c7af1..e3a7e36639ef 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -63,6 +63,15 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long fd, unsigned long pgoff) { + /* + * The shift for mmap2 is constant, regardless of PAGE_SIZE + * setting. + */ + if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1)) + return -EINVAL; + + pgoff >>= PAGE_SHIFT - 12; + return do_mmap2(addr, len, prot, flags, fd, pgoff); } |