Revision f555befd185dc097ede887eb7b308c2e1c1369d4 authored by Jan Stancek on 12 January 2021, 23:49:21 UTC, committed by Linus Torvalds on 13 January 2021, 02:12:54 UTC
After commit 236c32eb1096 ("mm: migrate: clean up migrate_prep{_local}")',
do_migrate_pages can return uninitialized variable 'err' (which is
propagated to user-space as error) when 'from' and 'to' nodesets are
identical. This can be reproduced with LTP migrate_pages01, which calls
migrate_pages() with same set for both old/new_nodes.
Add 'err' initialization back.
Link: https://lkml.kernel.org/r/456a021c7ef3636d7668cec9dcb4a446a4244812.1609855564.git.jstancek@redhat.com
Fixes: 236c32eb1096 ("mm: migrate: clean up migrate_prep{_local}")
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Yang Shi <shy828301@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent c22ee52
altera.h
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* altera.h
*
* altera FPGA driver
*
* Copyright (C) Altera Corporation 1998-2001
* Copyright (C) 2010 NetUP Inc.
* Copyright (C) 2010 Igor M. Liplianin <liplianin@netup.ru>
*/
#ifndef _ALTERA_H_
#define _ALTERA_H_
struct altera_config {
void *dev;
u8 *action;
int (*jtag_io) (void *dev, int tms, int tdi, int tdo);
};
#if defined(CONFIG_ALTERA_STAPL) || \
(defined(CONFIG_ALTERA_STAPL_MODULE) && defined(MODULE))
extern int altera_init(struct altera_config *config, const struct firmware *fw);
#else
static inline int altera_init(struct altera_config *config,
const struct firmware *fw)
{
printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
return 0;
}
#endif /* CONFIG_ALTERA_STAPL */
#endif /* _ALTERA_H_ */
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