From d8d14bd09cddbaf0168d61af638455a26bd027ff Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 29 Jan 2014 14:05:46 -0800 Subject: fs/compat: fix lookup_dcookie() parameter handling Commit d5dc77bfeeab ("consolidate compat lookup_dcookie()") coverted all architectures to the new compat_sys_lookup_dcookie() syscall. The "len" paramater of the new compat syscall must have the type compat_size_t in order to enforce zero extension for architectures where the ABI requires that the caller of a function performed zero and/or sign extension to 64 bit of all parameters. Signed-off-by: Heiko Carstens Cc: Al Viro Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Hendrik Brueckner Cc: Martin Schwidefsky Cc: [v3.10+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/compat.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/compat.h') diff --git a/include/linux/compat.h b/include/linux/compat.h index c5642b83e02b..19f6003291de 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -422,7 +422,7 @@ extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, compat_long_t addr, compat_long_t data); -asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, size_t); +asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); /* * epoll (fs/eventpoll.c) compat bits follow ... */ -- cgit v1.2.3-59-g8ed1b