On Mon, 2026-07-13 at 14:35 +0800, Shung-Hsi Yu wrote: > > 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.
Shung-Hsi, Thank you for figuring this out. I'd suggest we switch to bpf_testmod_test_writable_bare_tp() [1] from the test module to avoid the config dependency and let Sun pack all of this as a single patch-set to simplify backports (if such are necessary). Wdyt? [1] https://lore.kernel.org/bpf/[email protected]/2-tp-test.diff
