bpf: arm64: Silence "UBSAN: negation-overflow" warning

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With UBSAN, test_bpf.ko triggers warnings like:

UBSAN: negation-overflow in arch/arm64/net/bpf_jit_comp.c:1333:28
negation of -2147483648 cannot be represented in type 's32' (aka 'int'):

Silence these warnings by casting imm to u32 first.

Reported-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Song Liu <song@kernel.org>
Tested-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20250218080240.2431257-1-song@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Song Liu 2025-02-18 00:02:40 -08:00 • committed by Alexei Starovoitov

parent 201b62ccc8

commit 239860828f

1 changed files with 3 additions and 3 deletions

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arch/arm64/net/bpf_jit_comp.c

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