Bluetooth: L2CAP ERTM shutdown protect sk and chan

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During execution of l2cap_sock_shutdown() which might
sleep, the sk and chan structures can be in an unlocked
condition which potentially allows the structures to be
freed by other running threads. Therefore, there is a
possibility of a malfunction or memory reuse after being
freed.

Keep the sk and chan structures alive during the
execution of l2cap_sock_shutdown() by using their
respective hold and put functions. This allows the structures
to be freeable at the end of l2cap_sock_shutdown().

Signed-off-by: Kautuk Consul <Kautuk_Consul@mentor.com>
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

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Dean Jenkins 2015-06-23 17:59:32 +01:00 • committed by Marcel Holtmann

parent d10270ce94

commit 2baea85dec

1 changed files with 8 additions and 0 deletions

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net/bluetooth/l2cap_sock.c

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