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Revision e7afe6c1d486b516ed586dcc10b3e7e3e85a9c2b authored by Scott Mayhew on 15 February 2019, 18:42:02 UTC, committed by J. Bruce Fields on 15 February 2019, 19:56:51 UTC 
sunrpc: fix 4 more call sites that were using stack memory with a scatterlist
 
While trying to reproduce a reported kernel panic on arm64, I discovered
that AUTH_GSS basically doesn't work at all with older enctypes on arm64
systems with CONFIG_VMAP_STACK enabled.  It turns out there still a few
places using stack memory with scatterlists, causing krb5_encrypt() and
krb5_decrypt() to produce incorrect results (or a BUG if CONFIG_DEBUG_SG
is enabled).

Tested with cthon on v4.0/v4.1/v4.2 with krb5/krb5i/krb5p using
des3-cbc-sha1 and arcfour-hmac-md5.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
1 parent 3bf6b57
Raw File
symlink.c 
/*
 * Copyright 1997-1998 Transmeta Corporation -- All Rights Reserved
 *
 * This file is part of the Linux kernel and is made available under
 * the terms of the GNU General Public License, version 2, or at your
 * option, any later version, incorporated herein by reference.
 */

#include "autofs_i.h"

static const char *autofs_get_link(struct dentry *dentry,
				   struct inode *inode,
				   struct delayed_call *done)
{
	struct autofs_sb_info *sbi;
	struct autofs_info *ino;

	if (!dentry)
		return ERR_PTR(-ECHILD);
	sbi = autofs_sbi(dentry->d_sb);
	ino = autofs_dentry_ino(dentry);
	if (ino && !autofs_oz_mode(sbi))
		ino->last_used = jiffies;
	return d_inode(dentry)->i_private;
}

const struct inode_operations autofs_symlink_inode_operations = {
	.get_link	= autofs_get_link
};
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