GNU bug report logs - #75924
maint: fix s390 buffer flushes

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Package: gzip; Reported by: Eduard Stefes <eduard.stefes@HIDDEN>; merged with #74651, #75911; dated Wed, 29 Jan 2025 14:20:02 UTC; Maintainer for gzip is bug-gzip@HIDDEN.

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From: Eduard Stefes <Eduard.Stefes@HIDDEN>
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Thread-Topic: [EXTERNAL] bug#75924: maint: fix s390 buffer flushes
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Subject: Re:  bug#75924: maint: fix s390 buffer flushes
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IEFuZCB0aGF0IGl0IHdvdWxkIGJlIGdvb2QgdG8gdGVzdCB0aGlzIGNhc2VzLg0KDQoNCj4gDQo+
IC0tIA0KPiBFZHVhcmQgU3RlZmVzIDxFZHVhcmQuU3RlZmVzQGlibS5jb20+DQoNCi0tIA0KRWR1
YXJkIFN0ZWZlcyA8RWR1YXJkLlN0ZWZlc0BpYm0uY29tPg0K




Information forwarded to bug-gzip@HIDDEN:
bug#75924; Package gzip. Full text available.

Message received at 75924 <at> debbugs.gnu.org:


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Subject: Re: bug#75924: maint: fix s390 buffer flushes
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Hi,

the s390x build of gzip 1.12 with this patch applied failed[1] due to
a test failure:

FAIL: hufts
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

+ initial_cwd_=3D/<<PKGBUILDDIR>>/builddir/tests
+ testdir_prefix_
+ printf gt
+ pfx_=3Dgt
+ mktempd_ /<<PKGBUILDDIR>>/builddir/tests gt-hufts.XXXX
+ destdir_=3D/<<PKGBUILDDIR>>/builddir/tests
+ template_=3Dgt-hufts.XXXX
+ MAX_TRIES_=3D4
+ destdir_slash_=3D/<<PKGBUILDDIR>>/builddir/tests/
+ unset TMPDIR
+ d=3D/<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ :
+ test -d /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ ls -dgo /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ perms=3Ddrwx------ 2 4096 Jan 29 19:11
/<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ :
+ echo /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ return
+ test_dir_=3D/<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ cd /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ srcdir=3D../../../tests
+ builddir=3D..
+ export srcdir builddir
+ gl_init_sh_nl_=3D

+ IFS=3D

+ expr 1 + 128
+ eval trap 'Exit 129' 1
+ trap Exit 129 1
+ expr 2 + 128
+ eval trap 'Exit 130' 2
+ trap Exit 130 2
+ expr 3 + 128
+ eval trap 'Exit 131' 3
+ trap Exit 131 3
+ expr 13 + 128
+ eval trap 'Exit 141' 13
+ trap Exit 141 13
+ expr 15 + 128
+ eval trap 'Exit 143' 15
+ trap Exit 143 15
+ saved_IFS=3D

+ IFS=3D:
+ new_PATH=3D
+ sep_=3D
+ test -d /<<PKGBUILDDIR>>/builddir/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir
+ sep_=3D:
+ test -d /usr/local/sbin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin
+ sep_=3D:
+ test -d /usr/local/bin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin
+ sep_=3D:
+ test -d /usr/sbin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/=
sbin
+ sep_=3D:
+ test -d /usr/bin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/=
sbin:/usr/bin
+ sep_=3D:
+ test -d /sbin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/=
sbin:/usr/bin:/sbin
+ sep_=3D:
+ test -d /bin/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/=
sbin:/usr/bin:/sbin:/bin
+ sep_=3D:
+ test -d /usr/games/.
+ new_PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/=
sbin:/usr/bin:/sbin:/bin:/usr/games
+ sep_=3D:
+ IFS=3D

+ PATH=3D/<<PKGBUILDDIR>>/builddir:/usr/local/sbin:/usr/local/bin:/usr/sbin=
:/usr/bin:/sbin:/bin:/usr/games
+ export PATH
+ trap remove_tmp_ 0
+ path_prepend_ ..
+ test 1 !=3D 0
+ path_dir_=3D..
+ abs_path_dir_=3D/<<PKGBUILDDIR>>/builddir/tests/..
+ PATH=3D/<<PKGBUILDDIR>>/builddir/tests/..:/<<PKGBUILDDIR>>/builddir:/usr/=
local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
+ create_exe_shims_ /<<PKGBUILDDIR>>/builddir/tests/..
+ return 0
+ shift
+ test 0 !=3D 0
+ export PATH
+ printf \n...: invalid compressed data--format violated\n
+ fail=3D0
+ returns_ 1 gzip -dc /<<PKGBUILDDIR>>/builddir/../tests/hufts-segv.gz
+ compare /dev/null out
+ compare_dev_null_ /dev/null out
+ test 2 =3D 2
+ test x/dev/null =3D x/dev/null
+ test -s out
+ return 0
+ return 0
+ clean_stderr=3D
  s/.*hufts-segv.gz: /...: /
  /^+/d
  /Operation-Ending-Supplemental Code/d

+ sed
  s/.*hufts-segv.gz: /...: /
  /^+/d
  /Operation-Ending-Supplemental Code/d
 err-raw
+ compare exp err
+ compare_dev_null_ exp err
+ test 2 =3D 2
+ test xexp =3D x/dev/null
+ test xerr =3D x/dev/null
+ return 2
+ compare_ exp err
+ diff -u exp err
+ printf \037\213\010\000\060\060\060\060\060\060\144\000\000\000
+ printf \ngzip: stdin: invalid compressed data--format violated\n
+ returns_ 1 gzip -d
+ sed
  s/.*hufts-segv.gz: /...: /
  /^+/d
  /Operation-Ending-Supplemental Code/d
 err33501-raw
+ compare exp33501 err33501
+ compare_dev_null_ exp33501 err33501
+ test 2 =3D 2
+ test xexp33501 =3D x/dev/null
+ test xerr33501 =3D x/dev/null
+ return 2
+ compare_ exp33501 err33501
+ diff -u exp33501 err33501
--- exp33501 2025-01-29 19:11:54.875303836 +0000
+++ err33501 2025-01-29 19:11:54.875303836 +0000
@@ -1,2 +1,2 @@

-gzip: stdin: invalid compressed data--format violated
+gzip: stdin: unexpected end of file
+ fail=3D1
+ Exit 1
+ set +e
+ exit 1
+ exit 1
+ remove_tmp_
+ __st=3D1
+ cleanup_
+ :
+ test  =3D yes
+ cd /<<PKGBUILDDIR>>/builddir/tests
+ chmod -R u+rwx /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ rm -rf /<<PKGBUILDDIR>>/builddir/tests/gt-hufts.whyU
+ exit 1
FAIL hufts (exit status: 1)

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
Testsuite summary for gzip 1.12
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D
# TOTAL: 26
# PASS:  25
# SKIP:  0
# XFAIL: 0
# FAIL:  1
# XPASS: 0
# ERROR: 0


1. https://launchpadlibrarian.net/773464868/buildlog_ubuntu-plucky-s390x.gz=
ip_1.12-1.1ubuntu3~ppa1_BUILDING.txt.gz

On Wed, Jan 29, 2025 at 3:59=E2=80=AFPM Paul Eggert <eggert@HIDDEN> wr=
ote:
>
> Thanks for the bug report. I installed the attached, a bit simpler than
> the patch you suggested; can you please give it a try?
>
> Also, is there a related bug near dfltcc.c line 375? That is, when
> (inptr =3D=3D insize && fill_inbuf (1) =3D=3D EOF && param->cf), won't in=
size
> then be zero, so that gzip will go into an infinite loop attempting to
> read past EOF?




Information forwarded to bug-gzip@HIDDEN:
bug#75924; Package gzip. Full text available.

Message received at 75924 <at> debbugs.gnu.org:


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From: Eduard Stefes <Eduard.Stefes@HIDDEN>
To: "eggert@HIDDEN" <eggert@HIDDEN>
Thread-Topic: [EXTERNAL] Re: bug#75924: maint: fix s390 buffer flushes
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Subject: RE: bug#75924: maint: fix s390 buffer flushes
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IFN0ZWZlcyA8RWR1YXJkLlN0ZWZlc0BpYm0uY29tPg0K




Information forwarded to bug-gzip@HIDDEN:
bug#75924; Package gzip. Full text available.
Merged 74651 75911 75924. Request was from Paul Eggert <eggert@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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Subject: Re: bug#75924: maint: fix s390 buffer flushes
To: Eduard Stefes <eduard.stefes@HIDDEN>
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Thanks for the bug report. I installed the attached, a bit simpler than 
the patch you suggested; can you please give it a try?

Also, is there a related bug near dfltcc.c line 375? That is, when 
(inptr == insize && fill_inbuf (1) == EOF && param->cf), won't insize 
then be zero, so that gzip will go into an infinite loop attempting to 
read past EOF?
--------------5LqlOc0V6pAowN6PHGzA9t0E
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Information forwarded to bug-gzip@HIDDEN:
bug#75924; Package gzip. Full text available.

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From: Eduard Stefes <eduard.stefes@HIDDEN>
To: bug-gzip <bug-gzip@HIDDEN>
Subject: maint: fix s390 buffer flushes
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Problem reported by Nick Rosbrook in:
https://bugs.launchpad.net/ubuntu/+source/rsyslog/+bug/2083700

align the behavior of dfltcc_inflate to do the same as gzip_inflate
when it hits a premature EOF
---
 dfltcc.c    | 6 +++++-
 tests/hufts | 6 ++++--
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/dfltcc.c b/dfltcc.c
index 811c1f8..5d421bb 100644
--- a/dfltcc.c
+++ b/dfltcc.c
@@ -18,6 +18,7 @@
 #include <config.h>
 
 #include <stdlib.h>
+#include <errno.h>
 
 #ifdef HAVE_SYS_SDT_H
 # include <sys/sdt.h>
@@ -437,7 +438,10 @@ dfltcc_inflate ()
           if (fill_inbuf (1) == EOF)
             {
               /* Premature EOF.  */
-              return 2;
+              flush_outbuf ();
+              errno = 0;
+              read_error ();
+              __builtin_unreachable ();
             }
           inptr = 0;
         }
diff --git a/tests/hufts b/tests/hufts
index c464ef6..6dbb8ac 100755
--- a/tests/hufts
+++ b/tests/hufts
@@ -40,10 +40,12 @@ compare exp err || fail=1
 
 printf '\037\213\010\000\060\060\060\060\060\060\144\000\000\000' > bug33501 \
   || framework_failure_
-printf '\ngzip: stdin: invalid compressed data--format violated\n' >exp33501 \
+printf '\ngzip: stdin: invalid compressed data--format violated\n' > exp33501.1 \
+  || framework_failure_
+printf '\ngzip: stdin: unexpected end of file\n' > exp33501.2 \
   || framework_failure_
 returns_ 1 gzip -d <bug33501 >out33501 2> err33501-raw || fail=1
 sed "$clean_stderr" err33501-raw > err33501 || framework_failure_
-compare exp33501 err33501 || fail=1
+compare exp33501.1 err33501 || compare exp33501.2 err33501 || fail=1
 
 Exit $fail
-- 
2.48.1





Acknowledgement sent to Eduard Stefes <eduard.stefes@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gzip@HIDDEN. Full text available.
Report forwarded to bug-gzip@HIDDEN:
bug#75924; Package gzip. Full text available.
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