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>

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