diff options
| author | Todd Kjos <tkjos@android.com> | 2019-02-13 11:48:53 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-14 08:13:56 +0100 |
| commit | 36f30937922ce75390c73f99e650e4f2eb56b0e6 (patch) | |
| tree | 9472761de1936735f9001bff16496d69a2c14690 | |
| parent | ca5dc2d11787d72dd11f5af77ef07a93a293bea6 (diff) | |
binder: fix sparse issue in binder_alloc_selftest.c
Fixes sparse issues reported by the kbuild test robot running
on https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
char-misc-testing: bde4a19fc04f5 ("binder: use userspace pointer as base
of buffer space")
Error output (drivers/android/binder_alloc_selftest.c):
sparse: warning: incorrect type in assignment (different address spaces)
sparse: expected void *page_addr
sparse: got void [noderef] <asn:1> *user_data
sparse: error: subtraction of different types can't work
Fixed by adding necessary "__user" tags.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/android/binder_alloc_selftest.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/android/binder_alloc_selftest.c b/drivers/android/binder_alloc_selftest.c index f0f4d7d02635..b72708918b06 100644 --- a/drivers/android/binder_alloc_selftest.c +++ b/drivers/android/binder_alloc_selftest.c @@ -102,10 +102,11 @@ static bool check_buffer_pages_allocated(struct binder_alloc *alloc, struct binder_buffer *buffer, size_t size) { - void *page_addr, *end; + void __user *page_addr; + void __user *end; int page_index; - end = (void *)PAGE_ALIGN((uintptr_t)buffer->user_data + size); + end = (void __user *)PAGE_ALIGN((uintptr_t)buffer->user_data + size); page_addr = buffer->user_data; for (; page_addr < end; page_addr += PAGE_SIZE) { page_index = (page_addr - alloc->buffer) / PAGE_SIZE; |