Masami Hiramatsu
ca477b42ae
ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
...
commit 0d73c3f8e7f6ee2aab1bb350f60c180f5ae21a2c upstream.
Since do_undefinstr() uses get_user to get the undefined
instruction, it can be called before kprobes processes
recursive check. This can cause an infinit recursive
exception.
Prohibit probing on get_user functions.
Fixes: 24ba613c9d6c ("ARM kprobes: core code")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-22 18:54:00 +02:00
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