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Tue, 13 Apr 2021 20:58:17 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F27BD42049; Tue, 13 Apr 2021 20:58:16 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A52E042041; Tue, 13 Apr 2021 20:58:16 +0000 (GMT) Received: from vm.lan (unknown [9.145.157.105]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 13 Apr 2021 20:58:16 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding; s=pp1; bh=bNdm1EJDCaoPjOjPSr9wHraKM0PU5dmT7/WxyuthDPY=; b=m8b3Fz0f+9hw7D1NyYInjDHr8K3TQi9K5O9/n6i2pr3OGs2D8Si0mjF7jnzApi0z2NAL fcywz0ar9DoFFvAlc/4yjhVbBr9xEoOC7shQcgc74UFdU4SVzKkNc2bTdAdFe0doat8x kH2HgO9Qbre0B0lALsxQ7RWfbPh54R8YPyyBaWH/bsvqKWXDW3RH4X8Lv6FhcovMT+Te qLyxo9vMfXwvPHZM5dUFqgWviI6GDzei7+x1ciBGGUI4aPt+eEo2iMY/oKagVRa375hd Edekf0xJeYZnQzXz7pmRgJ2ab63vfa0reETn9/kmDSW/McvH9X6rgBjyCU70cKOV5+M/ uw== From: Ilya Leoshkevich To: Laurent Vivier Subject: [PATCH] linux-user/elfload: fix filling psinfo->pr_psargs Date: Tue, 13 Apr 2021 22:58:14 +0200 Message-Id: <20210413205814.22821-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 5bcOjQipFJe9y1oucx_FjNSgQGjrnzq2 X-Proofpoint-ORIG-GUID: 5bcOjQipFJe9y1oucx_FjNSgQGjrnzq2 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-04-13_15:2021-04-13, 2021-04-13 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 bulkscore=0 adultscore=0 mlxscore=0 mlxlogscore=999 clxscore=1015 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104130137 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christian Borntraeger , qemu-devel@nongnu.org, Ilya Leoshkevich Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @ibm.com) Content-Type: text/plain; charset="utf-8" The current code dumps the memory between arg_start and arg_end, which contains the argv pointers. This results in the Core was generated by `` message when opening the core file in GDB. This is because the code is supposed to dump the actual arg strings. Fix by using arg_strings and env_strings instead of arg_start and arg_end. Signed-off-by: Ilya Leoshkevich --- linux-user/elfload.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 4e45bd1539..cffcebfe45 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -3662,10 +3662,10 @@ static int fill_psinfo(struct target_elf_prpsinfo *= psinfo, const TaskState *ts) =20 (void) memset(psinfo, 0, sizeof (*psinfo)); =20 - len =3D ts->info->arg_end - ts->info->arg_start; + len =3D ts->info->env_strings - ts->info->arg_strings; if (len >=3D ELF_PRARGSZ) len =3D ELF_PRARGSZ - 1; - if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_start, len)) + if (copy_from_user(&psinfo->pr_psargs, ts->info->arg_strings, len)) return -EFAULT; for (i =3D 0; i < len; i++) if (psinfo->pr_psargs[i] =3D=3D 0) --=20 2.29.2