The raw_tp_writable_reject_nbd_invalid test relies on availability of the
nbd_send_request tracepoint, which is only present if the selftest kernel is
built with CONFIG_BLK_DEV_NBD=y and the kernel built from current BPF selftests
config lacks.

Without it, the bpf_raw_tracepoint_open() call always returns with -2, leaving
raw_tp_writable_reject_nbd_invalid test always passing without exercising the
checks bpf_probe_register().

Cc: <[email protected]> # 5.2.0
Link: https://lore.kernel.org/bpf/alRtilWhKw4zzMkI@u94a
Signed-off-by: Shung-Hsi Yu <[email protected]>
---
Not sure if fixes tag is the right thing to use here, so use the cc
stable tag instead to get this config change propogated to other stable
branches to make stable BPF CI's job easier.
---
 tools/testing/selftests/bpf/config | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/config 
b/tools/testing/selftests/bpf/config
index adb25146e88c..e1797bd87904 100644
--- a/tools/testing/selftests/bpf/config
+++ b/tools/testing/selftests/bpf/config
@@ -1,4 +1,5 @@
 CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_NBD=y
 CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y
 CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=1
 CONFIG_BPF=y
-- 
2.54.0


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