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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, 21 Apr 2021 11:00:51 +0000 (13:00 +0200)
commitb448a6a2fc5aa7c36403ebfb2dcbf767d3b01eb4
tree7cef8b931e61b264e913541c7f73ed1b0d978ff2tree | snapshot
parentf12e8cf6b18013146741e5075983726f7a00903bcommit | 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 | history
Domain: System / Kernel;