selftests/bpf: Exercise unsafe obj drops from tracing progs

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Add task_kfunc failure cases for bpf_obj_drop() on local objects with
referenced kptr fields from tracing and NMI tracing programs. These programs
must be rejected because dropping the object would run full special-field
destruction synchronously in an unsafe context.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260609202548.3571690-4-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Kumar Kartikeya Dwivedi 2026-06-09 22:25:45 +02:00 • committed by Alexei Starovoitov

parent a3a81d2476

commit 4b84518137

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tools/testing/selftests/bpf/progs/task_kfunc_failure.c

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