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linux/arch/arm/include
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Russell King 21e1e6192b ARM: BUG if jumping to usermode address in kernel mode 
commit 8bafae202c upstream.

Detect if we are returning to usermode via the normal kernel exit paths
but the saved PSR value indicates that we are in kernel mode.  This
could occur due to corrupted stack state, which has been observed with
"ftracetest".

This ensures that we catch the problem case before we get to user code.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Alex Shi <alex.shi@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2017-12-14 09:53:05 +01:00
..
asm ARM: BUG if jumping to usermode address in kernel mode 2017-12-14 09:53:05 +01:00
debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
uapi/asm License cleanup: add SPDX license identifier to uapi header files with a license 2017-11-02 11:20:11 +01:00