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authorHeiko Carstens <heiko.carstens@de.ibm.com>2019-02-04 16:44:55 +0100
committerAlexei Starovoitov <ast@kernel.org>2019-02-04 09:45:09 -0800
commitecc15f113c8e8748cc304ed6d8beb825a432b34c (patch)
tree3e1016b4cfadbb538207e92d9fb582a2364f1852 /tools
parentMerge branch 'change-libbpf-print-api' (diff)
downloadlinux-dev-ecc15f113c8e8748cc304ed6d8beb825a432b34c.tar.xz
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s390: bpf: fix JMP32 code-gen
Commit 626a5f66da0d19 ("s390: bpf: implement jitting of JMP32") added JMP32 code-gen support for s390. However it triggers the warning below due to some unusual gotos in the original s390 bpf jit code. Add a couple of additional "is_jmp32" initializations to fix this. Also fix the wrong opcode for the "llilf" instruction that was introduced with the same commit. arch/s390/net/bpf_jit_comp.c: In function 'bpf_jit_insn': arch/s390/net/bpf_jit_comp.c:248:55: warning: 'is_jmp32' may be used uninitialized in this function [-Wmaybe-uninitialized] _EMIT6(op1 | reg(b1, b2) << 16 | (rel & 0xffff), op2 | mask); \ ^ arch/s390/net/bpf_jit_comp.c:1211:8: note: 'is_jmp32' was declared here bool is_jmp32 = BPF_CLASS(insn->code) == BPF_JMP32; Fixes: 626a5f66da0d19 ("s390: bpf: implement jitting of JMP32") Cc: Jiong Wang <jiong.wang@netronome.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Jiong Wang <jiong.wang@netronome.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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