Eric Dumazet 9b8c88f875 l2tp: do not use sock_hold() in pppol2tp_session_get_sock() ...

pppol2tp_session_get_sock() is using RCU, it must be ready
for sk_refcnt being zero.

Commit ee40fb2e1eb5 ("l2tp: protect sock pointer of
struct pppol2tp_session with RCU") was correct because it
had a call_rcu(..., pppol2tp_put_sk) which was later removed in blamed commit.

pppol2tp_recv() can use pppol2tp_session_get_sock() as well.

Fixes: c5cbaef992d6 ("l2tp: refactor ppp socket/session relationship")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Chapman <jchapman@katalix.com>
Reviewed-by: Guillaume Nault <gnault@redhat.com>
Link: https://patch.msgid.link/20250826134435.1683435-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2025-08-27 17:16:13 -07:00

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Kconfig

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l2tp_core.c

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l2tp_core.h

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l2tp_debugfs.c

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l2tp_eth.c

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l2tp_ip6.c

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l2tp_ip.c

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l2tp_netlink.c

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l2tp_ppp.c

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Makefile

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trace.h

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