From 9216dfad4fc97ab639ef0885efc713f3d7a20d5b Mon Sep 17 00:00:00 2001 From: Christoph Lameter Date: Fri, 23 Jun 2006 02:03:57 -0700 Subject: [PATCH] move_pages: fix 32 -> 64 bit compat function The definition of the third parameter is a pointer to an array of virtual addresses which give us some trouble. The existing code calculated the wrong address in the array since I used void to avoid having to specify a type. I now use the correct type "compat_uptr_t __user *" in the definition of the function in kernel/compat.c. However, I used __u32 in syscalls.h. Would have to include compat.h there in order to provide the same definition which would generate an ugly include situation. On both ia64 and x86_64 compat_uptr_t is u32. So this works although parameter declarations differ. Signed-off-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/compat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/compat.c') diff --git a/kernel/compat.c b/kernel/compat.c index ccea93e28954..2f672332430f 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -938,7 +938,7 @@ asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp) #ifdef CONFIG_NUMA asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages, - void __user *pages32, + compat_uptr_t __user *pages32, const int __user *nodes, int __user *status, int flags) @@ -950,7 +950,7 @@ asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_pages, for (i = 0; i < nr_pages; i++) { compat_uptr_t p; - if (get_user(p, (compat_uptr_t *)(pages32 + i)) || + if (get_user(p, pages32 + i) || put_user(compat_ptr(p), pages + i)) return -EFAULT; } -- cgit v1.2.3