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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f18fa5de5b
This patch initialize stack variables which are used in
frag_lowpan_compare_key to zero. In my case there are padding bytes in the
structures ieee802154_addr as well in frag_lowpan_compare_key. Otherwise
the key variable contains random bytes. The result is that a compare of
two keys by memcmp works incorrect.
Fixes: 648700f76b ("inet: frags: use rhashtables for reassembly units")
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Reported-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __IEEE802154_6LOWPAN_I_H__
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#define __IEEE802154_6LOWPAN_I_H__
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#include <linux/list.h>
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#include <net/ieee802154_netdev.h>
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#include <net/inet_frag.h>
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#include <net/6lowpan.h>
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typedef unsigned __bitwise lowpan_rx_result;
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#define RX_CONTINUE ((__force lowpan_rx_result) 0u)
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#define RX_DROP_UNUSABLE ((__force lowpan_rx_result) 1u)
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#define RX_DROP ((__force lowpan_rx_result) 2u)
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#define RX_QUEUED ((__force lowpan_rx_result) 3u)
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#define LOWPAN_DISPATCH_FRAG1 0xc0
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#define LOWPAN_DISPATCH_FRAGN 0xe0
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struct frag_lowpan_compare_key {
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u16 tag;
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u16 d_size;
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struct ieee802154_addr src;
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struct ieee802154_addr dst;
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};
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/* Equivalent of ipv4 struct ipq
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*/
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struct lowpan_frag_queue {
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struct inet_frag_queue q;
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};
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int lowpan_frag_rcv(struct sk_buff *skb, const u8 frag_type);
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void lowpan_net_frag_exit(void);
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int lowpan_net_frag_init(void);
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void lowpan_rx_init(void);
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void lowpan_rx_exit(void);
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int lowpan_header_create(struct sk_buff *skb, struct net_device *dev,
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unsigned short type, const void *_daddr,
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const void *_saddr, unsigned int len);
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netdev_tx_t lowpan_xmit(struct sk_buff *skb, struct net_device *dev);
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int lowpan_iphc_decompress(struct sk_buff *skb);
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lowpan_rx_result lowpan_rx_h_ipv6(struct sk_buff *skb);
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#endif /* __IEEE802154_6LOWPAN_I_H__ */
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