[RFC PATCH bpf-next v2 04/16] MIPS: eBPF: support BPF_JMP32 in JIT static analysis
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STALE1827d
From: Tony Ambardar <hidden>
Date: 2021-10-05 08:30:41
Also in:
bpf, linux-mips
Subsystem:
bpf jit for mips (32-bit and 64-bit), bpf [general] (safe dynamic programs and tools), mips, the rest · Maintainers:
Johan Almbladh, Paul Burton, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Thomas Bogendoerfer, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
While the MIPS64 JIT rejects programs with JMP32 insns, it still performs
initial static analysis. Add support in reg_val_propagate_range() for
BPF_JMP32, fixing kernel log WARNINGs ("Unhandled BPF_JMP case") seen
during JIT testing. Handle code BPF_JMP32 the same as BPF_JMP.
Fixes: 092ed0968bb6 ("bpf: verifier support JMP32")
Signed-off-by: Tony Ambardar <redacted>
---
arch/mips/net/ebpf_jit.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/mips/net/ebpf_jit.c b/arch/mips/net/ebpf_jit.c
index b41ebcfb90c4..dbde5d6eefa6 100644
--- a/arch/mips/net/ebpf_jit.c
+++ b/arch/mips/net/ebpf_jit.c@@ -1686,6 +1686,7 @@ static int reg_val_propagate_range(struct jit_ctx *ctx, u64 initial_rvt, rvt[idx] |= RVT_DONE; break; case BPF_JMP: + case BPF_JMP32: switch (BPF_OP(insn->code)) { case BPF_EXIT: rvt[idx] = RVT_DONE | exit_rvt;
--
2.25.1