bpf: Return proper address for non-zero offsets in insn array

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The map_direct_value_addr() function of the instruction
array map incorrectly adds offset to the resulting address.
This is a bug, because later the resolve_pseudo_ldimm64()
function adds the offset. Fix it. Corresponding selftests
are added in a consequent commit.

Fixes: 493d9e0d60 ("bpf, x86: add support for indirect jumps")
Signed-off-by: Anton Protopopov <a.s.protopopov@gmail.com>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260111153047.8388-2-a.s.protopopov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Anton Protopopov 2026-01-11 15:30:45 +00:00 • committed by Alexei Starovoitov

parent bbdbed193b

commit e3bd7bdf5f

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kernel/bpf/bpf_insn_array.c

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