selftests/bpf: Add test for bpf_obj_drop with bad reg->off

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Add a selftest for the fix provided in the previous commit. Without the
fix, the selftest passes the verifier while it should fail. The special
logic for detecting graph root or node for reg->off and bypassing
reg->off == 0 guarantee for release helpers/kfuncs has been dropped.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20230822175140.1317749-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Kumar Kartikeya Dwivedi 2023-08-22 23:21:40 +05:30 • committed by Alexei Starovoitov

parent 6785b2edf4

commit fbc5bc4c8e

1 changed files with 20 additions and 0 deletions

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

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