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[2620:52:3:1:0:246e:9693:128c]) by mx.google.com with ESMTPS id 2-20020a170906300200b00777581091d9si9660202ejz.634.2022.10.04.04.26.27 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Oct 2022 04:26:27 -0700 (PDT) Received-SPF: pass (google.com: domain of binutils-bounces+ouuuleilei=gmail.com@sourceware.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) client-ip=2620:52:3:1:0:246e:9693:128c; Authentication-Results: mx.google.com; dkim=pass header.i=@sourceware.org header.s=default header.b=KqUZXaTy; spf=pass (google.com: domain of binutils-bounces+ouuuleilei=gmail.com@sourceware.org designates 2620:52:3:1:0:246e:9693:128c as permitted sender) smtp.mailfrom="binutils-bounces+ouuuleilei=gmail.com@sourceware.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 5BB223854161 for ; Tue, 4 Oct 2022 11:26:22 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 5BB223854161 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1664882782; bh=wpHcPiSSXKc1QxV0/yGioZB88u8tR1HzgkErFOSWd44=; h=To:Subject:Date:In-Reply-To:References:List-Id:List-Unsubscribe: List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc: From; b=KqUZXaTyN4y28c3T1WsQpUV17Ci75At6BPu641xDT+OYd4rUsYadSTEKvzJHMJgCi PJ5VqA6HoN6uCSAJKhwZKFGnA4qokwsF5xavGiZuAwh4Cb9TXK9oKcyYpu/Fv8HFEx ZM0yt+MCH1t5+ubYeHkc6S3JFykgyu0n5ZYI0dTE= X-Original-To: binutils@sourceware.org Delivered-To: binutils@sourceware.org Received: from mail-sender-0.a4lg.com (mail-sender.a4lg.com [153.120.152.154]) by sourceware.org (Postfix) with ESMTPS id D8CA8385C33F; Tue, 4 Oct 2022 11:26:13 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org D8CA8385C33F Received: from [127.0.0.1] (localhost [127.0.0.1]) by mail-sender-0.a4lg.com (Postfix) with ESMTPSA id 2076F300089; Tue, 4 Oct 2022 11:26:11 +0000 (UTC) To: Tsukasa OI , Nelson Chu , Kito Cheng , Palmer Dabbelt , Andrew Burgess , Jan Beulich , Andreas Schwab Subject: [PATCH v3 1/2] RISC-V: Fix buffer overflow on print_insn_riscv Date: Tue, 4 Oct 2022 11:25:56 +0000 Message-Id: In-Reply-To: References: Mime-Version: 1.0 X-Spam-Status: No, score=-12.0 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, GIT_PATCH_0, KAM_MANYTO, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Tsukasa OI via Binutils From: Tsukasa OI Reply-To: Tsukasa OI Cc: binutils@sourceware.org, gdb-patches@sourceware.org Errors-To: binutils-bounces+ouuuleilei=gmail.com@sourceware.org Sender: "Binutils" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1745746991619630293?= X-GMAIL-MSGID: =?utf-8?q?1745756133801873040?= Because riscv_insn_length started to support instructions up to 176-bit, we need to increase packet buffer size to 176-bit in size. include/ChangeLog: * opcode/riscv.h (RISCV_MAX_INSN_LEN): Max instruction length for use in buffer size. opcodes/ChangeLog: * riscv-dis.c (print_insn_riscv): Increase buffer size for max 176-bit length instructions. --- include/opcode/riscv.h | 2 ++ opcodes/riscv-dis.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/opcode/riscv.h b/include/opcode/riscv.h index 9417dcf00c5..b14f3d998b3 100644 --- a/include/opcode/riscv.h +++ b/include/opcode/riscv.h @@ -40,6 +40,8 @@ static inline unsigned int riscv_insn_length (insn_t insn) /* 80- ... 176-bit instructions. */ if ((insn & 0x7f) == 0x7f && (insn & 0x7000) != 0x7000) return 10 + ((insn >> 11) & 0xe); + /* Maximum value returned by this function. */ +#define RISCV_MAX_INSN_LEN 22 /* Longer instructions not supported at the moment. */ return 2; } diff --git a/opcodes/riscv-dis.c b/opcodes/riscv-dis.c index 031c19334fa..2c0aed13e75 100644 --- a/opcodes/riscv-dis.c +++ b/opcodes/riscv-dis.c @@ -1000,7 +1000,7 @@ riscv_disassemble_data (bfd_vma memaddr ATTRIBUTE_UNUSED, int print_insn_riscv (bfd_vma memaddr, struct disassemble_info *info) { - bfd_byte packet[8]; + bfd_byte packet[RISCV_MAX_INSN_LEN]; insn_t insn = 0; bfd_vma dump_size; int status;