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linux-stable/net/hsr
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Sebastian Andrzej Siewior 5aa2820177 hsr: Add a rcu-read lock to hsr_forward_skb(). 
hsr_forward_skb() a skb and keeps information in an on-stack
hsr_frame_info. hsr_get_node() assigns hsr_frame_info::node_src which is
from a RCU list. This pointer is used later in hsr_forward_do().
I don't see a reason why this pointer can't vanish midway since there is
no guarantee that hsr_forward_skb() is invoked from an RCU read section.

Use rcu_read_lock() to protect hsr_frame_info::node_src from its
assignment until it is no longer used.

Fixes: f266a683a4 ("net/hsr: Better frame dispatch")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-12-01 20:26:21 -08:00
..
hsr_debugfs.c Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_device.c Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_device.h net: hsr: add offloading support 2021-02-11 13:24:44 -08:00
hsr_forward.c hsr: Add a rcu-read lock to hsr_forward_skb(). 2022-12-01 20:26:21 -08:00
hsr_forward.h net: hsr: fix mac_len checks 2021-05-24 14:10:28 -07:00
hsr_framereg.c Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_framereg.h Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_main.c net: use eth_hw_addr_set() instead of ether_addr_copy() 2021-10-02 14:18:25 +01:00
hsr_main.h Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_netlink.c Revert "net: hsr: use hlist_head instead of list_head for mac addresses" 2022-12-01 20:26:20 -08:00
hsr_netlink.h hsr: enhance netlink socket interface to support PRP 2020-07-27 12:20:40 -07:00
hsr_slave.c net: hsr: fix mac_len checks 2021-05-24 14:10:28 -07:00
hsr_slave.h net: prp: add packet handling support 2020-07-27 12:20:40 -07:00
Kconfig hsr: enhance netlink socket interface to support PRP 2020-07-27 12:20:40 -07:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00