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authorArnd Bergmann <arnd@arndb.de>2022-02-14 20:22:10 +0100
committerArnd Bergmann <arnd@arndb.de>2022-02-25 09:36:05 +0100
commit23fc539e81295b14b50c6ccc5baeb4f3d59d822d (patch)
treec4efbc0e265a797a6284fa49a66c19b16b6c5005 /lib
parent52fe8d125c9afecc6fff6afd9950a388488df2ce (diff)
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uaccess: fix type mismatch warnings from access_ok()
On some architectures, access_ok() does not do any argument type checking, so replacing the definition with a generic one causes a few warnings for harmless issues that were never caught before. Fix the ones that I found either through my own test builds or that were reported by the 0-day bot. Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Dinh Nguyen <dinguyen@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'lib')
-rw-r--r--lib/test_lockup.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/test_lockup.c b/lib/test_lockup.c
index 906b598740a7..6a0f329a794a 100644
--- a/lib/test_lockup.c
+++ b/lib/test_lockup.c
@@ -417,8 +417,8 @@ static bool test_kernel_ptr(unsigned long addr, int size)
return false;
/* should be at least readable kernel address */
- if (access_ok(ptr, 1) ||
- access_ok(ptr + size - 1, 1) ||
+ if (access_ok((void __user *)ptr, 1) ||
+ access_ok((void __user *)ptr + size - 1, 1) ||
get_kernel_nofault(buf, ptr) ||
get_kernel_nofault(buf, ptr + size - 1)) {
pr_err("invalid kernel ptr: %#lx\n", addr);