bpf: abort verification if env->cur_state->loop_entry != NULL

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In addition to warning abort verification with -EFAULT.
If env->cur_state->loop_entry != NULL something is irrecoverably
buggy.

Fixes: bbbc02b744 ("bpf: copy_verifier_state() should copy 'loop_entry' field")
Suggested-by: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20250225003838.135319-1-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Eduard Zingerman 2025-02-24 16:38:38 -08:00 • committed by Alexei Starovoitov

parent 1ffe30efd2

commit f3c2d243a3

1 changed files with 4 additions and 2 deletions

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kernel/bpf/verifier.c

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