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[MIPS] N32: Make sure pointer is good before passing it to sys_waitid().

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After all we're calling sys_waitid() with fs set to KERNEL_DS ...

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-02-19 03:42:11 +00:00
parent 82ad93f4a0
commit f3468e0c34
1 changed files with 3 additions and 0 deletions
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3
arch/mips/kernel/linux32.c
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@ -230,6 +230,9 @@ sysn32_waitid(int which, compat_pid_t pid,
long ret; long ret;
mm_segment_t old_fs = get_fs(); mm_segment_t old_fs = get_fs();
if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
return -EFAULT;
set_fs (KERNEL_DS); set_fs (KERNEL_DS);
ret = sys_waitid(which, pid, uinfo, options, ret = sys_waitid(which, pid, uinfo, options,
uru ? (struct rusage __user *) &ru : NULL); uru ? (struct rusage __user *) &ru : NULL);