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Merge 5.4-rc2 into android-mainline

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Linux 5.4-rc2

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Idfe13500feef5c1095d06c419fa121f751daa459
This commit is contained in:
Greg Kroah-Hartman
2019-10-07 07:09:37 +02:00
parent ecbdae8679 da0c9ea146
commit 8e9e0abf99
292 changed files with 2634 additions and 1806 deletions
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45
kernel/fork.c
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@@ -2532,39 +2532,19 @@ SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,
#ifdef __ARCH_WANT_SYS_CLONE3
noinline static int copy_clone_args_from_user(struct kernel_clone_args *kargs,
struct clone_args __user *uargs,
size_t size)
size_t usize)
{
int err;
struct clone_args args;
if (unlikely(size > PAGE_SIZE))
if (unlikely(usize > PAGE_SIZE))
return -E2BIG;
if (unlikely(size < sizeof(struct clone_args)))
if (unlikely(usize < CLONE_ARGS_SIZE_VER0))
return -EINVAL;
if (unlikely(!access_ok(uargs, size)))
return -EFAULT;
if (size > sizeof(struct clone_args)) {
unsigned char __user *addr;
unsigned char __user *end;
unsigned char val;
addr = (void __user *)uargs + sizeof(struct clone_args);
end = (void __user *)uargs + size;
for (; addr < end; addr++) {
if (get_user(val, addr))
return -EFAULT;
if (val)
return -E2BIG;
}
size = sizeof(struct clone_args);
}
if (copy_from_user(&args, uargs, size))
return -EFAULT;
err = copy_struct_from_user(&args, sizeof(args), uargs, usize);
if (err)
return err;
/*
* Verify that higher 32bits of exit_signal are unset and that
@@ -2611,6 +2591,17 @@ static bool clone3_args_valid(const struct kernel_clone_args *kargs)
return true;
}
/**
* clone3 - create a new process with specific properties
* @uargs: argument structure
* @size: size of @uargs
*
* clone3() is the extensible successor to clone()/clone2().
* It takes a struct as argument that is versioned by its size.
*
* Return: On success, a positive PID for the child process.
* On error, a negative errno number.
*/
SYSCALL_DEFINE2(clone3, struct clone_args __user *, uargs, size_t, size)
{
int err;