From unknown Mon Aug 18 14:21:24 2025 X-Loop: help-debbugs@gnu.org Subject: bug#43583: [PATCH 0/4] Fix DFLTCC segfault when compressing or decompressing two files Resent-From: Ilya Leoshkevich Original-Sender: "Debbugs-submit" Resent-CC: bug-gzip@gnu.org Resent-Date: Wed, 23 Sep 2020 22:10:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 43583 X-GNU-PR-Package: gzip X-GNU-PR-Keywords: patch To: Jim Meyering , Paul Eggert Cc: iii@linux.ibm.com, 43583@debbugs.gnu.org X-Debbugs-Original-Cc: Ilya Leoshkevich , bug-gzip@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160089898419249 (code B ref -1); Wed, 23 Sep 2020 22:10:02 +0000 Received: (at submit) by debbugs.gnu.org; 23 Sep 2020 22:09:44 +0000 Received: from localhost ([127.0.0.1]:38085 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kLCxM-00050M-Db for submit@debbugs.gnu.org; Wed, 23 Sep 2020 18:09:44 -0400 Received: from lists.gnu.org ([209.51.188.17]:41400) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kLCxI-000504-C4 for submit@debbugs.gnu.org; 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We found an issue with IBM Z hardware compression support: gzip segfaults when processing two files. This patch series fixes the issue, adds a test and performs two minor cleanups: fixes clang build and updates .gitignore files. Best regards, Ilya Ilya Leoshkevich (4): Update .gitignore files Fix building DFLTCC with clang Fix DFLTCC segfault when compressing or decompressing two files Add a test for compressing and decompressing two files dfltcc.c | 21 ++++++++++++++------- lib/.gitignore | 14 ++++++++++++++ m4/.gitignore | 3 +++ tests/Makefile.am | 1 + tests/two-files | 31 +++++++++++++++++++++++++++++++ 5 files changed, 63 insertions(+), 7 deletions(-) create mode 100755 tests/two-files -- 2.25.4 From unknown Mon Aug 18 14:21:24 2025 X-Loop: help-debbugs@gnu.org Subject: bug#43583: [PATCH 2/4] Fix building DFLTCC with clang Resent-From: Ilya Leoshkevich Original-Sender: "Debbugs-submit" Resent-CC: bug-gzip@gnu.org Resent-Date: Wed, 23 Sep 2020 22:11:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43583 X-GNU-PR-Package: gzip X-GNU-PR-Keywords: patch To: Jim Meyering , Paul Eggert Cc: iii@linux.ibm.com, 43583@debbugs.gnu.org X-Debbugs-Original-Cc: Ilya Leoshkevich , bug-gzip@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160089900619362 (code B ref -1); 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Wed, 23 Sep 2020 22:09:58 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma04ams.nl.ibm.com with ESMTP id 33payubbd9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 23 Sep 2020 22:09:57 +0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 08NM9tnZ12059006 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 23 Sep 2020 22:09:55 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8212811C052; Wed, 23 Sep 2020 22:09:55 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3AD9311C050; Wed, 23 Sep 2020 22:09:55 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.183.66]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 23 Sep 2020 22:09:55 +0000 (GMT) From: Ilya Leoshkevich Date: Thu, 24 Sep 2020 00:08:55 +0200 Message-Id: <20200923220857.137527-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200923220857.137527-1-iii@linux.ibm.com> References: <20200923220857.137527-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-23_16:2020-09-23, 2020-09-23 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 suspectscore=0 mlxlogscore=989 clxscore=1015 impostorscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 spamscore=0 mlxscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009230166 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/23 18:10:02 X-ACL-Warn: Detected OS = Linux 3.x [generic] [fuzzy] 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) clang does not support .machinemode, so put it under an #ifdef. --- dfltcc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/dfltcc.c b/dfltcc.c index 432c68c..86aa56e 100644 --- a/dfltcc.c +++ b/dfltcc.c @@ -160,10 +160,15 @@ is_dfltcc_enabled (void) /* STFLE is supported since z9-109 and only in z/Architecture mode. When * compiling with -m31, gcc defaults to ESA mode, however, since the kernel * is 64-bit, it's always z/Architecture mode at runtime. */ - __asm__ (".machinemode push\n" + __asm__ ( +#ifndef __clang__ + ".machinemode push\n" ".machinemode zarch\n" +#endif "stfle %[facilities]\n" +#ifndef __clang__ ".machinemode pop\n" +#endif : [facilities] "=Q"(facilities), [r0] "+r"(r0) :: "cc"); return is_bit_set (facilities, DFLTCC_FACILITY); } -- 2.25.4 From unknown Mon Aug 18 14:21:24 2025 X-Loop: help-debbugs@gnu.org Subject: bug#43583: [PATCH 4/4] Add a test for compressing and decompressing two files Resent-From: Ilya Leoshkevich Original-Sender: "Debbugs-submit" Resent-CC: bug-gzip@gnu.org Resent-Date: Wed, 23 Sep 2020 22:12:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43583 X-GNU-PR-Package: gzip X-GNU-PR-Keywords: patch To: Jim Meyering , Paul Eggert Cc: iii@linux.ibm.com, 43583@debbugs.gnu.org X-Debbugs-Original-Cc: Ilya Leoshkevich , bug-gzip@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160089906819521 (code B ref -1); 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envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/23 18:09:35 X-ACL-Warn: Detected OS = Linux 3.x [generic] 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) It ensures that compression and decompression state of the first file does not affect the second file. --- tests/Makefile.am | 1 + tests/two-files | 31 +++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) create mode 100755 tests/two-files diff --git a/tests/Makefile.am b/tests/Makefile.am index a87a594..2f7c9c3 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -27,6 +27,7 @@ TESTS = \ reproducible \ stdin \ timestamp \ + two-files \ trailing-nul \ unpack-invalid \ unpack-valid \ diff --git a/tests/two-files b/tests/two-files new file mode 100755 index 0000000..efdfb4f --- /dev/null +++ b/tests/two-files @@ -0,0 +1,31 @@ +#!/bin/sh +# Ensure that gzip can compress more than one file. + +# Copyright 2020 Free Software Foundation, Inc. + +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . +# limit so don't run it by default. + +. "${srcdir=.}/init.sh"; path_prepend_ .. + +dd if=/dev/urandom of=a count=5000 bs=1 +dd if=/dev/urandom of=b count=5000 bs=1 +cp a a.exp +cp b b.exp +gzip -1 a b || fail=1 +gzip -d a.gz b.gz || fail=1 +compare a.exp a || fail=1 +compare b.exp b || fail=1 + +Exit $fail -- 2.25.4 From unknown Mon Aug 18 14:21:24 2025 X-Loop: help-debbugs@gnu.org Subject: bug#43583: [PATCH 3/4] Fix DFLTCC segfault when compressing or decompressing two files Resent-From: Ilya Leoshkevich Original-Sender: "Debbugs-submit" Resent-CC: bug-gzip@gnu.org Resent-Date: Wed, 23 Sep 2020 22:12:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 43583 X-GNU-PR-Package: gzip X-GNU-PR-Keywords: patch To: Jim Meyering , Paul Eggert Cc: iii@linux.ibm.com, 43583@debbugs.gnu.org X-Debbugs-Original-Cc: Ilya Leoshkevich , bug-gzip@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160089906819528 (code B ref -1); Wed, 23 Sep 2020 22:12:02 +0000 Received: (at submit) by debbugs.gnu.org; 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Wed, 23 Sep 2020 22:10:16 +0000 (GMT) From: Ilya Leoshkevich Date: Thu, 24 Sep 2020 00:08:56 +0200 Message-Id: <20200923220857.137527-4-iii@linux.ibm.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200923220857.137527-1-iii@linux.ibm.com> References: <20200923220857.137527-1-iii@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-09-23_16:2020-09-23, 2020-09-23 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 malwarescore=0 spamscore=0 clxscore=1015 bulkscore=0 phishscore=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 adultscore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2009230162 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/23 18:09:35 X-ACL-Warn: Detected OS = Linux 3.1-3.10 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) The value in total_in global variable from processing the first file affected processing of the second file. Fix by making total_in local. --- dfltcc.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/dfltcc.c b/dfltcc.c index 86aa56e..3a5b92d 100644 --- a/dfltcc.c +++ b/dfltcc.c @@ -242,10 +242,8 @@ dfltcc_gdht (struct dfltcc_param_v0 *param) dfltcc (DFLTCC_GDHT, param, NULL, NULL, &next_in, &avail_in, NULL); } -static off_t total_in; - static dfltcc_cc -dfltcc_cmpr_xpnd (struct dfltcc_param_v0 *param, int fn) +dfltcc_cmpr_xpnd (struct dfltcc_param_v0 *param, int fn, off_t *total_in) { uch *next_out = outbuf + outcnt; size_t avail_out = OUTBUFSIZ - outcnt; @@ -257,7 +255,7 @@ dfltcc_cmpr_xpnd (struct dfltcc_param_v0 *param, int fn) window); off_t consumed_in = next_in - (inbuf + inptr); inptr += consumed_in; - total_in += consumed_in; + *total_in += consumed_in; outcnt += ((OUTBUFSIZ - outcnt) - avail_out); return cc; } @@ -349,6 +347,7 @@ dfltcc_deflate (int pack_level) union aligned_dfltcc_param_v0 ctx_v0; struct dfltcc_param_v0 *param = init_param (&ctx_v0); + off_t total_in = 0; /* Compress ifd into ofd in a loop. */ while (true) @@ -398,7 +397,8 @@ dfltcc_deflate (int pack_level) } /* Compress inbuf into outbuf. */ - while (dfltcc_cmpr_xpnd (param, DFLTCC_CMPR) == DFLTCC_CC_AGAIN) + while (dfltcc_cmpr_xpnd (param, DFLTCC_CMPR, &total_in) + == DFLTCC_CC_AGAIN) ; /* Unmask the input data. */ @@ -427,6 +427,7 @@ dfltcc_inflate (void) union aligned_dfltcc_param_v0 ctx_v0; struct dfltcc_param_v0 *param = init_param (&ctx_v0); + off_t total_in = 0; /* Decompress ifd into ofd in a loop. */ while (true) @@ -446,7 +447,8 @@ dfltcc_inflate (void) /* Decompress inbuf into outbuf. */ dfltcc_cc cc; - while ((cc = dfltcc_cmpr_xpnd (param, DFLTCC_XPND)) == DFLTCC_CC_AGAIN) + while ((cc = dfltcc_cmpr_xpnd (param, DFLTCC_XPND, &total_in)) + == DFLTCC_CC_AGAIN) ; if (cc == DFLTCC_CC_OK) { -- 2.25.4 From unknown Mon Aug 18 14:21:24 2025 X-Loop: help-debbugs@gnu.org Subject: bug#43583: [PATCH 0/4] Fix DFLTCC segfault when compressing or 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zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id BgkgPBplm7qt; Thu, 24 Sep 2020 16:38:42 -0700 (PDT) Received: from [192.168.1.9] (cpe-23-243-218-95.socal.res.rr.com [23.243.218.95]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 4709616007A; Thu, 24 Sep 2020 16:38:42 -0700 (PDT) References: <20200923220857.137527-1-iii@linux.ibm.com> From: Paul Eggert Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= LS0tLS1CRUdJTiBQR1AgUFVCTElDIEtFWSBCTE9DSy0tLS0tCgptUUlOQkV5QWNtUUJFQURB QXlIMnhvVHU3cHBHNUQzYThGTVpFb243NGRDdmM0K3ExWEEySjJ0QnkycHdhVHFmCmhweHhk R0E5Smo1MFVKM1BENGJTVUVnTjh0TFowc2FuNDdsNVhUQUZMaTI0NTZjaVNsNW04c0thSGxH ZHQ5WG0KQUF0bVhxZVpWSVlYL1VGUzk2ZkR6ZjR4aEVtbS95N0xiWUVQUWRVZHh1NDd4QTVL aFRZcDVibHRGM1dZRHoxWQpnZDdneDA3QXV3cDdpdzdlTnZub0RUQWxLQWw4S1lEWnpiRE5D UUdFYnBZM2VmWkl2UGRlSStGV1FONFcra2doCnkrUDZhdTZQcklJaFlyYWV1YTdYRGRiMkxT 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