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| author | H. Peter Anvin <hpa@zytor.com> | 2006-02-24 21:20:29 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-03-21 13:27:48 +0000 |
| commit | 947df17cb1be4c7239280a77263c249fde1379ef (patch) | |
| tree | 1e32d0e81848e59a9796c3034208aa72432583d0 /arch/mips/kernel/linux32.c | |
| parent | de862b488e81172d4c610945efd9f3fc7f4b84a7 (diff) | |
| download | blackbird-op-linux-947df17cb1be4c7239280a77263c249fde1379ef.tar.gz blackbird-op-linux-947df17cb1be4c7239280a77263c249fde1379ef.zip | |
[MIPS] sys_mmap2 offset argument should always be shifted 12, not PAGE_SHIFT.
This patch adjusts the offset argument passed into sys_mmap2 to be
always shifted 12, even when the native page size isn't 4K. This is
what all existing userspace libraries expect.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
Diffstat (limited to 'arch/mips/kernel/linux32.c')
| -rw-r--r-- | arch/mips/kernel/linux32.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index 1e8d24823d39..013bc93688e8 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -106,6 +106,10 @@ sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, unsigned long error; error = -EINVAL; + if (pgoff & (~PAGE_MASK >> 12)) + goto out; + pgoff >>= PAGE_SHIFT-12; + if (!(flags & MAP_ANONYMOUS)) { error = -EBADF; file = fget(fd); |
