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| author | Chunyan Zhang <zhang.lyra@gmail.com> | 2017-12-01 03:51:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-03 10:19:41 +0100 |
| commit | 5f63882e762ebe312cc58404f959fc3de98b4491 (patch) | |
| tree | b0bff90f4c15d4dd22d4628cb1fde6588fd46140 /fs | |
| parent | aa79bac9953c99d13c2bc7b43c9ed157ff5b031a (diff) | |
ARM: 8731/1: Fix csum_partial_copy_from_user() stack mismatch
[ Upstream commit 36b0cb84ee858f02c256d26f0cb4229c78e3399e ]
An additional 'ip' will be pushed to the stack, for restoring the
DACR later, if CONFIG_CPU_SW_DOMAIN_PAN defined.
However, the fixup still get the err_ptr by add #8*4 to sp, which
results in the fact that the code area pointed by the LR will be
overwritten, or the kernel will crash if CONFIG_DEBUG_RODATA is enabled.
This patch fixes the stack mismatch.
Fixes: a5e090acbf54 ("ARM: software-based priviledged-no-access support")
Signed-off-by: Lvqiang Huang <Lvqiang.Huang@spreadtrum.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions