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and subject line Bug#310053: fixed in gzip 1.3.5-10sarge1
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Subject: gzip: gzip hangs in futex(..., FUTEX_WAIT) indefinetely
From: Petter Reinholdtsen <[EMAIL PROTECTED]>
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Package: gzip
Version: 1.3.5-9
Tags: patch
While looking at the ubuntu patches for gzip, I found some changes
which are missing in the debian package. These are the ubuntu
changelog entries related to the fixes:
gzip (1.3.5-9ubuntu3) warty; urgency=low
* Acutually use the abort_gzip_signal routine created in -9ubuntu2
(really Closes: Ubuntu#1854)
-- Matt Zimmerman <[EMAIL PROTECTED]> Wed, 13 Oct 2004 08:15:48 -0700
gzip (1.3.5-9ubuntu2) warty; urgency=low
* Use a separate signal handler function rather than changing abort_gzip,
since abort_gzip is used in non-signal contexts as well
-- Matt Zimmerman <[EMAIL PROTECTED]> Mon, 11 Oct 2004 12:50:02 -0700
gzip (1.3.5-9ubuntu1) warty; urgency=low
* Call _exit rather than the do_exit cleanup routine from abort_gzip.
abort_gzip is a signal handler, and do_exit does a number of things that
signal handlers are not permitted to do (Closes: Ubuntu#1854)
-- Matt Zimmerman <[EMAIL PROTECTED]> Mon, 11 Oct 2004 03:34:02 -0700
The ubuntu bug report is available from
<URL: https://bugzilla.ubuntu.com/show_bug.cgi?id=1854 >. The problem
is described there as:
when running apt-get upgrade, apt-extracttemplates never finishes
due to gzip hanging on a futex.
If I try to strace apt-get, it works, so I'm not able to generate a
useful trace. dpkg by itself on single packages seems to work
still, so I could try to track down if it's a single package that's
causing the trouble.
I'm quite sure this problem exist in Debian as well. Here is the
complete patch from ubuntu:
--- gzip-1.3.5.orig/gzip.c
+++ gzip-1.3.5/gzip.c
@@ -464,16 +467,16 @@
foreground = signal(SIGINT, SIG_IGN) != SIG_IGN;
if (foreground) {
- (void) signal (SIGINT, (sig_type)abort_gzip);
+ (void) signal (SIGINT, (sig_type)abort_gzip_signal);
}
#ifdef SIGTERM
if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
- (void) signal(SIGTERM, (sig_type)abort_gzip);
+ (void) signal(SIGTERM, (sig_type)abort_gzip_signal);
}
#endif
#ifdef SIGHUP
if (signal(SIGHUP, SIG_IGN) != SIG_IGN) {
- (void) signal(SIGHUP, (sig_type)abort_gzip);
+ (void) signal(SIGHUP, (sig_type)abort_gzip_signal);
}
#endif
@@ -580,7 +586,7 @@
#ifdef SIGPIPE
/* Ignore "Broken Pipe" message with --quiet */
if (quiet && signal (SIGPIPE, SIG_IGN) != SIG_IGN)
- signal (SIGPIPE, (sig_type) abort_gzip);
+ signal (SIGPIPE, (sig_type) abort_gzip_signal);
#endif
/* By default, save name and timestamp on compression but do not
@@ -1842,14 +1849,31 @@
}
/* ========================================================================
- * Signal and error handler.
+ * Close and unlink the output file if appropriate. This routine must be
+ * async-signal-safe.
*/
-RETSIGTYPE abort_gzip()
-{
+local void do_remove() {
if (remove_ofname) {
close(ofd);
xunlink (ofname);
}
+}
+
+/* ========================================================================
+ * Error handler.
+ */
+RETSIGTYPE abort_gzip()
+{
+ do_remove();
do_exit(ERROR);
}
+
+/* ========================================================================
+ * Signal handler.
+ */
+RETSIGTYPE abort_gzip_signal()
+{
+ do_remove();
+ _exit(ERROR);
+}
--- gzip-1.3.5.orig/gzip.h
+++ gzip-1.3.5/gzip.h
@@ -273,6 +274,7 @@
/* in gzip.c */
RETSIGTYPE abort_gzip OF((void));
+RETSIGTYPE abort_gzip_signal OF((void));
/* in deflate.c */
void lm_init OF((int pack_level, ush *flags));
---------------------------------------
Received: (at 310053-close) by bugs.debian.org; 17 Dec 2005 05:38:09 +0000
>From [EMAIL PROTECTED] Fri Dec 16 21:38:09 2005
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Received: from katie by spohr.debian.org with local (Exim 4.50)
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From: Bdale Garbee <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
X-Katie: $Revision: 1.17 $
Subject: Bug#310053: fixed in gzip 1.3.5-10sarge1
Message-Id: <[EMAIL PROTECTED]>
Sender: Archive Administrator <[EMAIL PROTECTED]>
Date: Fri, 16 Dec 2005 21:25:24 -0800
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Source: gzip
Source-Version: 1.3.5-10sarge1
We believe that the bug you reported is fixed in the latest version of
gzip, which is due to be installed in the Debian FTP archive:
gzip_1.3.5-10sarge1.diff.gz
to pool/main/g/gzip/gzip_1.3.5-10sarge1.diff.gz
gzip_1.3.5-10sarge1.dsc
to pool/main/g/gzip/gzip_1.3.5-10sarge1.dsc
gzip_1.3.5-10sarge1_i386.deb
to pool/main/g/gzip/gzip_1.3.5-10sarge1_i386.deb
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [EMAIL PROTECTED],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Bdale Garbee <[EMAIL PROTECTED]> (supplier of updated gzip package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [EMAIL PROTECTED])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.7
Date: Tue, 8 Nov 2005 22:25:19 -0700
Source: gzip
Binary: gzip
Architecture: source i386
Version: 1.3.5-10sarge1
Distribution: stable
Urgency: low
Maintainer: Bdale Garbee <[EMAIL PROTECTED]>
Changed-By: Bdale Garbee <[EMAIL PROTECTED]>
Description:
gzip - The GNU compression utility
Closes: 310053 315612
Changes:
gzip (1.3.5-10sarge1) stable; urgency=low
.
* merge patch from Matt Zimmerman for futex hang due to improper signal
handling, closes: #310053, #315612
* backport to stable since this problem affects several debian.org servers
Files:
e784943158191ef223a43eb497ca32b0 566 base required gzip_1.3.5-10sarge1.dsc
029e60691ba58e5b655c2356b4e262fb 56903 base required
gzip_1.3.5-10sarge1.diff.gz
4d739864bdab384c1f03d5f582bd4035 70848 base required
gzip_1.3.5-10sarge1_i386.deb
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