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arc: kernel: Return -EFAULT if copy_to_user() fails
authorWang Qing <wangqing@vivo.com>
Mon, 1 Mar 2021 12:05:48 +0000 (20:05 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 28 Apr 2021 10:05:45 +0000 (12:05 +0200)
commita96e0c78b2cedf6b5f54fcda9d1d312ff6d24ca1
tree21cc1ada56f655216632b1bd21db4760e1153041tree | snapshot
parent4e20eb55d6b69bb54856683a34f125c176f20443commit | diff
arc: kernel: Return -EFAULT if copy_to_user() fails

[ Upstream commit 46e152186cd89d940b26726fff11eb3f4935b45a ]

The copy_to_user() function returns the number of bytes remaining to be
copied, but we want to return -EFAULT if the copy doesn't complete.

Signed-off-by: Wang Qing <wangqing@vivo.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/arc/kernel/signal.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git