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| author | Nathan Chancellor <natechancellor@gmail.com> | 2019-10-03 10:11:21 -0700 |
|---|---|---|
| committer | Christian Brauner <christian.brauner@ubuntu.com> | 2019-10-03 21:13:27 +0200 |
| commit | 341115822f8832f0c2d8af2f7e151c4c9a77bcd1 (patch) | |
| tree | bb30a7babcf846bf5e7c03b1f5c7ac9a85743262 /lib | |
| parent | c2ba8f41ad366dc12840dd87d8f1565185845126 (diff) | |
| download | lwn-341115822f8832f0c2d8af2f7e151c4c9a77bcd1.tar.gz lwn-341115822f8832f0c2d8af2f7e151c4c9a77bcd1.zip | |
usercopy: Add parentheses around assignment in test_copy_struct_from_user
Clang warns:
lib/test_user_copy.c:96:10: warning: using the result of an assignment
as a condition without parentheses [-Wparentheses]
if (ret |= test(umem_src == NULL, "kmalloc failed"))
~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lib/test_user_copy.c:96:10: note: place parentheses around the
assignment to silence this warning
if (ret |= test(umem_src == NULL, "kmalloc failed"))
^
( )
lib/test_user_copy.c:96:10: note: use '!=' to turn this compound
assignment into an inequality comparison
if (ret |= test(umem_src == NULL, "kmalloc failed"))
^~
!=
Add the parentheses as it suggests because this is intentional.
Fixes: f5a1a536fa14 ("lib: introduce copy_struct_from_user() helper")
Link: https://github.com/ClangBuiltLinux/linux/issues/731
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Aleksa Sarai <cyphar@cyphar.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20191003171121.2723619-1-natechancellor@gmail.com
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/test_user_copy.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/test_user_copy.c b/lib/test_user_copy.c index 950ee88cd6ac..e365ace06538 100644 --- a/lib/test_user_copy.c +++ b/lib/test_user_copy.c @@ -93,11 +93,11 @@ static int test_copy_struct_from_user(char *kmem, char __user *umem, size_t ksize, usize; umem_src = kmalloc(size, GFP_KERNEL); - if (ret |= test(umem_src == NULL, "kmalloc failed")) + if ((ret |= test(umem_src == NULL, "kmalloc failed"))) goto out_free; expected = kmalloc(size, GFP_KERNEL); - if (ret |= test(expected == NULL, "kmalloc failed")) + if ((ret |= test(expected == NULL, "kmalloc failed"))) goto out_free; /* Fill umem with a fixed byte pattern. */ |