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authorBorislav Petkov <bp@suse.de>2016-01-15 21:26:44 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2016-01-15 23:14:17 +0300
commit39c01bf933106296e43e46cdbd9edce13ae5a5b7 (patch)
treea11498f5db03a64dd57295dab6b75f848f8cfc48 /drivers/gpu
parente8ecde25f5e08f89b61d86c32bbb56b405e90c32 (diff)
downloadlinux-39c01bf933106296e43e46cdbd9edce13ae5a5b7.tar.xz
amdkfd: Copy from the proper user command pointer
8f1d57c17248 ("amdkfd: don't open-code memdup_user()") mistakenly uses an uninitialized local pointer, gcc complains: drivers/gpu/drm/amd/amdkfd/kfd_chardev.c: In function ‘kfd_ioctl_dbg_address_watch’: drivers/gpu/drm/amd/amdkfd/kfd_chardev.c:562:12: warning: ‘args_buff’ may be used uninitialized in this function [-Wmaybe-uninitialized] args_buff = memdup_user(args_buff, ^ Fix it. Signed-off-by: Borislav Petkov <bp@suse.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/amdkfd/kfd_chardev.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index d321222fd92e..d2b49c026cf6 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -558,8 +558,7 @@ static int kfd_ioctl_dbg_address_watch(struct file *filep,
return -EINVAL;
/* this is the actual buffer to work with */
-
- args_buff = memdup_user(args_buff,
+ args_buff = memdup_user(cmd_from_user,
args->buf_size_in_bytes - sizeof(*args));
if (IS_ERR(args_buff))
return PTR_ERR(args_buff);