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13 June 2022, 11:31:42 UTC
Revision 450677dcb0cce5cb751538360b7196c28b733f3e authored by Eric Dumazet on 22 November 2020, 06:16:58 UTC, committed by Linus Torvalds on 22 November 2020, 18:48:22 UTC 
mm/madvise: fix memory leak from process_madvise
 
The early return in process_madvise() will produce a memory leak.

Fix it.

Fixes: ecb8ac8b1f14 ("mm/madvise: introduce process_madvise() syscall: an external memory hinting API")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20201116155132.GA3805951@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent a349e4c
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Tip revision: 450677dcb0cce5cb751538360b7196c28b733f3e authored by Eric Dumazet on 22 November 2020, 06:16:58 UTC
mm/madvise: fix memory leak from process_madvise
Tip revision: 450677d
module-internal.h 
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* Module internals
 *
 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 */

#include <linux/elf.h>
#include <asm/module.h>

struct load_info {
	const char *name;
	/* pointer to module in temporary copy, freed at end of load_module() */
	struct module *mod;
	Elf_Ehdr *hdr;
	unsigned long len;
	Elf_Shdr *sechdrs;
	char *secstrings, *strtab;
	unsigned long symoffs, stroffs, init_typeoffs, core_typeoffs;
	struct _ddebug *debug;
	unsigned int num_debug;
	bool sig_ok;
#ifdef CONFIG_KALLSYMS
	unsigned long mod_kallsyms_init_off;
#endif
	struct {
		unsigned int sym, str, mod, vers, info, pcpu;
	} index;
};

extern int mod_verify_sig(const void *mod, struct load_info *info);
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