bpf: Do not ignore offsets for loads from insn_arrays

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When a pointer to PTR_TO_INSN is dereferenced, the offset field
of the BPF_LDX_MEM instruction can be nonzero. Patch the verifier
to not ignore this field.

Reported-by: Jiyong Yang <ksur673@gmail.com>
Fixes: 493d9e0d60 ("bpf, x86: add support for indirect jumps")
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Link: https://lore.kernel.org/r/20260406160141.36943-2-a.s.protopopov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Anton Protopopov 2026-04-06 16:01:40 +00:00 • committed by Alexei Starovoitov

parent 18474aed5d

commit 43cd9d9520

1 changed files with 20 additions and 0 deletions

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kernel/bpf/verifier.c

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