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linux/net/smc
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Kuniyuki Iwashima f6adf7a180 smc: Use __sk_dst_get() and dst_dev_rcu() in smc_vlan_by_tcpsk(). 
[ Upstream commit 0b0e4d51c6 ]

smc_vlan_by_tcpsk() fetches sk_dst_get(sk)->dev before RTNL and
passes it to netdev_walk_all_lower_dev(), which is illegal.

Also, smc_vlan_by_tcpsk_walk() does not require RTNL at all.

Let's use __sk_dst_get(), dst_dev_rcu(), and
netdev_walk_all_lower_dev_rcu().

Note that the returned value of smc_vlan_by_tcpsk() is not used
in the caller.

Fixes: 0cfdd8f92c ("smc: connection and link group creation")
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250916214758.650211-5-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-10-15 12:04:00 +02:00
..
af_smc.c net/smc: fix UAF on smcsk after smc_listen_out() 2025-08-19 18:27:16 -07:00
Kconfig net/smc: introduce loopback-ism for SMC intra-OS shortcut 2024-04-30 13:24:48 +02:00
Makefile net/smc: Introduce IPPROTO_SMC 2024-06-17 13:14:09 +01:00
smc.h smc: Fix various oops due to inet_sock type confusion. 2025-07-14 17:12:42 -07:00
smc_cdc.c net/smc: adapt cursor update when sndbuf and peer DMB are merged 2024-04-30 13:24:48 +02:00
smc_cdc.h net/smc: fix kernel panic caused by race of smc_sock 2021-12-28 12:42:45 +00:00
smc_clc.c smc: Use __sk_dst_get() and dst_dev_rcu() in smc_clc_prfx_match(). 2025-10-15 12:04:00 +02:00
smc_clc.h net/smc: check smcd_v2_ext_offset when receiving proposal msg 2024-12-15 12:34:59 +00:00
smc_close.c net/smc: put sk reference if close work was canceled 2023-11-06 10:01:07 +00:00
smc_close.h net/smc: remove close abort worker 2019-10-22 11:23:44 -07:00
smc_core.c smc: Use __sk_dst_get() and dst_dev_rcu() in smc_vlan_by_tcpsk(). 2025-10-15 12:04:00 +02:00
smc_core.h net/smc: support SMC-R V2 for rdma devices with max_recv_sge equals to 1 2024-12-12 13:50:00 +01:00
smc_diag.c net: remove sock_i_uid() 2025-06-23 17:04:03 -07:00
smc_ib.c net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync() 2025-09-02 10:51:16 +02:00
smc_ib.h net/smc: fix smc clc failed issue when netdevice not in init_net 2023-10-13 16:52:02 -07:00
smc_inet.c net/smc: fix lacks of icsk_syn_mss with IPPROTO_SMC 2024-10-10 08:48:11 -07:00
smc_inet.h net/smc: Introduce IPPROTO_SMC 2024-06-17 13:14:09 +01:00
smc_ism.c net/smc: add operations to merge sndbuf with peer DMB 2024-04-30 13:24:48 +02:00
smc_ism.h net/smc: add operations to merge sndbuf with peer DMB 2024-04-30 13:24:48 +02:00
smc_llc.c net/smc: support SMC-R V2 for rdma devices with max_recv_sge equals to 1 2024-12-12 13:50:00 +01:00
smc_llc.h net/smc: Introduce a specific sysctl for TEST_LINK time 2022-09-22 12:58:21 +02:00
smc_loopback.c net/smc: fix warning in smc_rx_splice() when calling get_page() 2025-09-19 16:44:05 -07:00
smc_loopback.h net/smc: remove unreferenced header in smc_loopback.h file 2024-07-31 11:48:58 +01:00
smc_netlink.c genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
smc_netlink.h net/smc: add support for user defined EIDs 2021-09-14 12:49:10 +01:00
smc_netns.h net/smc: introduce list of pnetids for Ethernet devices 2020-09-28 15:19:03 -07:00
smc_pnet.c smc: Fix use-after-free in __pnet_find_base_ndev(). 2025-10-15 12:04:00 +02:00
smc_pnet.h net/smc: Use a mutex for locking "struct smc_pnettable" 2022-02-24 09:09:33 -08:00
smc_rx.c net/smc: fix data error when recvmsg with MSG_PEEK flag 2025-01-13 18:59:00 -08:00
smc_rx.h net/smc: fix data error when recvmsg with MSG_PEEK flag 2025-01-13 18:59:00 -08:00
smc_stats.c net/smc: introduce statistics for ringbufs usage of net namespace 2024-08-20 11:38:23 +02:00
smc_stats.h net/smc: introduce statistics for ringbufs usage of net namespace 2024-08-20 11:38:23 +02:00
smc_sysctl.c net/smc: add sysctl for smc_limit_hs 2024-09-10 12:11:04 +02:00
smc_sysctl.h net/smc: add sysctl for max conns per lgr for SMC-R v2.1 2023-11-24 12:13:14 +00:00
smc_tracepoint.c net/smc: Introduce tracepoint for smcr link down 2021-11-01 13:39:14 +00:00
smc_tracepoint.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
smc_tx.c net/smc: remove unneeded atomic operations in smc_tx_sndbuf_nonempty 2023-11-24 15:00:47 +00:00
smc_tx.h smc: Drop smc_sendpage() in favour of smc_sendmsg() + MSG_SPLICE_PAGES 2023-06-24 15:50:12 -07:00
smc_wr.c net/smc: support SMC-R V2 for rdma devices with max_recv_sge equals to 1 2024-12-12 13:50:00 +01:00
smc_wr.h net/smc: Use percpu ref for wr tx reference 2023-03-17 08:59:01 +00:00