From: Arnd Bergmann <arnd@xxxxxxxx>
My patch to rework oabi fcntl64() introduced a harmless
sparse warning when file locking is disabled:
arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected struct flock64 [noderef] __user *user @@ got struct flock64 * @@
arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: expected struct flock64 [noderef] __user *user
arch/arm/kernel/sys_oabi-compat.c:251:51: sparse: got struct flock64 *
arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: sparse: incorrect type in argument 4 (different address spaces) @@ expected struct flock64 [noderef] __user *user @@ got struct flock64 * @@
arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: expected struct flock64 [noderef] __user *user
arch/arm/kernel/sys_oabi-compat.c:265:55: sparse: got struct flock64 *
When file locking is enabled, everything works correctly and the
right data gets passed, but the stub declarations in linux/fs.h
did not get modified when the calling conventions changed in an
earlier patch.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Fixes: 7e2d8c29ecdd ("ARM: 9111/1: oabi-compat: rework fcntl64() emulation")
Fixes: a75d30c77207 ("fs/locks: pass kernel struct flock to fcntl_getlk/setlk")
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
include/linux/fs.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 1cb616fc1105..698d92567841 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1220,13 +1220,13 @@ static inline int fcntl_setlk(unsigned int fd, struct file *file,
#if BITS_PER_LONG == 32
static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
- struct flock64 __user *user)
+ struct flock64 *user)
{
return -EINVAL;
}
static inline int fcntl_setlk64(unsigned int fd, struct file *file,
- unsigned int cmd, struct flock64 __user *user)
+ unsigned int cmd, struct flock64 *user)
{
return -EACCES;
}
--
2.29.2
