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| author | Arnd Bergmann <arnd@arndb.de> | 2022-02-14 20:22:10 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2022-02-25 09:36:05 +0100 |
| commit | 23fc539e81295b14b50c6ccc5baeb4f3d59d822d (patch) | |
| tree | c4efbc0e265a797a6284fa49a66c19b16b6c5005 /lib/test_lockup.c | |
| parent | 52fe8d125c9afecc6fff6afd9950a388488df2ce (diff) | |
| download | linux-stable-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.tar.gz linux-stable-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.tar.bz2 linux-stable-23fc539e81295b14b50c6ccc5baeb4f3d59d822d.zip | |
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/test_lockup.c')
| -rw-r--r-- | lib/test_lockup.c | 4 |
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); |