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Rao" To: Michael Ellerman , Nicholas Piggin , Jordan Niethe , Daniel Borkmann , Alexei Starovoitov , Christophe Leroy , Johan Almbladh , Song Liu Cc: , Subject: [PATCH v2 08/10] powerpc/bpf ppc32: Fix JMP32_JSET_K Date: Wed, 6 Oct 2021 01:55:27 +0530 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: qcCvMgW-hM8w19HAvotSv5VL3jNJ7MJI X-Proofpoint-ORIG-GUID: rJJrQq6I2QWj-A7Vnxrome7EFaryljy8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1,Aquarius:18.0.790,Hydra:6.0.391,FMLib:17.0.607.475 definitions=2021-10-05_04,2021-10-04_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 spamscore=0 impostorscore=0 mlxscore=0 phishscore=0 clxscore=1015 malwarescore=0 mlxlogscore=999 lowpriorityscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2109230001 definitions=main-2110050117 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org 'andi' only takes an unsigned 16-bit value. Correct the imm range used when emitting andi. Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32") Signed-off-by: Naveen N. Rao --- arch/powerpc/net/bpf_jit_comp32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c index 519ecb9ab67266..7c65de9ed4fa64 100644 --- a/arch/powerpc/net/bpf_jit_comp32.c +++ b/arch/powerpc/net/bpf_jit_comp32.c @@ -1075,7 +1075,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context * break; case BPF_JMP32 | BPF_JSET | BPF_K: /* andi does not sign-extend the immediate */ - if (imm >= -32768 && imm < 32768) { + if (imm >= 0 && imm < 32768) { /* PPC_ANDI is _only/always_ dot-form */ EMIT(PPC_RAW_ANDI(_R0, dst_reg, imm)); } else { -- 2.33.0