cee4034a3d
Christoph reports a lockdep splat in the mptcp_subflow_create_socket()
error path, when such function is invoked by
mptcp_pm_nl_create_listen_socket().
Such code path acquires two separates, nested socket lock, with the
internal lock operation lacking the "nested" annotation. Adding that
in sock_release() for mptcp's sake only could be confusing.
Instead just add a new lockclass to the in-kernel msk socket,
re-initializing the lockdep infra after the socket creation.
Fixes:
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| bpf.c | ||
| crypto.c | ||
| crypto_test.c | ||
| ctrl.c | ||
| diag.c | ||
| fastopen.c | ||
| mib.c | ||
| mib.h | ||
| mptcp_diag.c | ||
| options.c | ||
| pm.c | ||
| pm_netlink.c | ||
| pm_userspace.c | ||
| protocol.c | ||
| protocol.h | ||
| sockopt.c | ||
| subflow.c | ||
| syncookies.c | ||
| token.c | ||
| token_test.c | ||