/* Asymmetric public-key cryptography data parser
*
* See Documentation/crypto/asymmetric-keys.txt
*
* Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public Licence
* as published by the Free Software Foundation; either version
* 2 of the Licence, or (at your option) any later version.
*/
#ifndef _KEYS_ASYMMETRIC_PARSER_H
#define _KEYS_ASYMMETRIC_PARSER_H
/*
* Key data parser. Called during key instantiation.
*/
struct asymmetric_key_parser {
struct list_head link;
struct module *owner;
const char *name;
/* Attempt to parse a key from the data blob passed to add_key() or
* keyctl_instantiate(). Should also generate a proposed description
* that the caller can optionally use for the key.
*
* Return EBADMSG if not recognised.
*/
int (*parse)(struct key_preparsed_payload *prep);
};
extern int register_asymmetric_key_parser(struct asymmetric_key_parser *);
extern void unregister_asymmetric_key_parser(struct asymmetric_key_parser *);
#endif /* _KEYS_ASYMMETRIC_PARSER_H */
move
Erik reported that on a preproduction hardware a CMCI storm triggers the
BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is
started by the CMCI logic before the MCE CPU hotplug callback starts the
timer with add_timer_on(). So the timer is already queued which triggers
the BUG.
Using add_timer_on() is pretty pointless in this code because the timer is
strictlty per CPU, initialized as pinned and all operations which arm the
timer happen on the CPU to which the timer belongs.
Simplify the whole machinery by using mod_timer() instead of add_timer_on()
which avoids the problem because mod_timer() can handle already queued
timers. Use __start_timer() everywhere so the earliest armed expiry time is
preserved.
Reported-by: Erik Veijola <erik.veijola@intel.com>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>