We check if the sk_user_data (the psock in skmsg) is in fact a sockmap
type to late, after we read the refcnt which is an error. This
series moves the check up before reading refcnt and also adds a test
to test_maps to test trying to add a KCM socket into a sockmap.
While reviewig this code I also found an issue with KCM and kTLS
where each uses sk_data_ready hooks and associated stream parser
breaking expectations in kcm, ktls or both. But that fix will need
to go to net.
Thanks to Eric for reporting.
---
John Fastabend (2):
bpf: skmsg, fix psock create on existing kcm/tls port
bpf: test_maps add a test to catch kcm + sockmap
tools/testing/selftests/bpf/Makefile | 2 -
tools/testing/selftests/bpf/sockmap_kcm.c | 14 ++++++
tools/testing/selftests/bpf/test_maps.c | 64 ++++++++++++++++++++++++++++-
3 files changed, 77 insertions(+), 3 deletions(-)
create mode 100644 tools/testing/selftests/bpf/sockmap_kcm.c
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