Your message dated Sat, 02 Jan 2016 18:21:23 +0000
with message-id <[email protected]>
and subject line Bug#808333: fixed in transmission 2.84-3
has caused the Debian Bug report #808333,
regarding transmission-daemon: SIGSEGV due to racing in list node allocation
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
808333: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808333
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: transmission-daemon
Version: 2.84-0.2
Severity: normal
Tags: patch upstream fixed-upstream
Dear Maintainer,
transmission-daemon died on SIGSEGV (probably triggered by starting
torrent with webseed), backtrace seems same as in upstream ticket
https://trac.transmissionbt.com/ticket/5735
and it was fixed in upstream/trunk:
https://trac.transmissionbt.com/changeset/14319
I guess, it will be included in yet-to-be-released 2.90, upstream patch
attached.
Ticket suggests this bug affects other variants of transmission as well
(gtk and qt).
I don't see serious security implications (DoS at worst); but crashes
are annoying and fix is trivial, so maybe it worth fixing for next
jessie point release.
-- System Information:
Debian Release: 8.1
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (x86_64)
Foreign Architectures: amd64
Kernel: Linux 3.16.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=ru_RU.KOI8-R, LC_CTYPE=ru_RU.KOI8-R (charmap=KOI8-R)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages transmission-daemon depends on:
ii adduser 3.113+nmu3
ii init-system-helpers 1.22
ii libc6 2.19-18
ii libcurl3-gnutls 7.38.0-4+deb8u2
ii libevent-2.0-5 2.0.21-stable-2
ii libminiupnpc10 1.9.20140610-2
ii libnatpmp1 20110808-3
ii libssl1.0.0 1.0.1k-3+deb8u1
ii libsystemd0 215-17+deb8u1
ii lsb-base 4.1+Debian13+nmu1
ii transmission-common 2.84-0.2
ii zlib1g 1:1.2.8.dfsg-2+b1
Versions of packages transmission-daemon recommends:
ii transmission-cli 2.84-0.2
transmission-daemon suggests no packages.
-- Configuration Files:
/etc/transmission-daemon/settings.json [Errno 13] Permission denied:
u'/etc/transmission-daemon/settings.json'
-- no debconf information
(gdb) bt
#0 node_alloc () at list.c:43
#1 0xf7788d5d in tr_list_append (list=0xf77ea7a4 <paused_easy_handles>,
data=0xf3894a18) at list.c:99
#2 0xf777b337 in writeFunc (ptr=0xf38f9208, size=1, nmemb=16384,
vtask=0xf6359e00)
at web.c:127
#3 0xf763a943 in ?? () from /usr/lib/i386-linux-gnu/libcurl-gnutls.so.4
#4 0xf764fc01 in curl_easy_pause () from
/usr/lib/i386-linux-gnu/libcurl-gnutls.so.4
#5 0xf777b80b in tr_webThreadFunc (vsession=0xf8f8ae80) at web.c:448
#6 0xf775fac9 in ThreadFunc (_t=0xf6316218) at platform.c:105
#7 0xf73ffefb in start_thread (arg=0xf62ffb40) at pthread_create.c:309
#8 0xf733862e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129
(gdb) p ret
$1 = (tr_list *) 0x0
(gdb) p recycled_nodes
$2 = (tr_list *) 0x0
--- a/libtransmission/list.c (revision 14318)
+++ b/libtransmission/list.c (revision 14319)
@@ -30,20 +30,24 @@
static tr_list*
node_alloc (void)
{
- tr_list * ret;
+ tr_list * ret = NULL;
+ tr_lock * lock = getRecycledNodesLock ();
- if (recycled_nodes == NULL)
+ tr_lockLock (lock);
+
+ if (recycled_nodes != NULL)
{
- ret = tr_new (tr_list, 1);
- }
- else
- {
- tr_lockLock (getRecycledNodesLock ());
ret = recycled_nodes;
recycled_nodes = recycled_nodes->next;
- tr_lockUnlock (getRecycledNodesLock ());
}
+ tr_lockUnlock (lock);
+
+ if (ret == NULL)
+ {
+ ret = tr_new (tr_list, 1);
+ }
+
*ret = TR_LIST_CLEAR;
return ret;
}
@@ -51,13 +55,15 @@
static void
node_free (tr_list* node)
{
+ tr_lock * lock = getRecycledNodesLock ();
+
if (node != NULL)
{
*node = TR_LIST_CLEAR;
- tr_lockLock (getRecycledNodesLock ());
+ tr_lockLock (lock);
node->next = recycled_nodes;
recycled_nodes = node;
- tr_lockUnlock (getRecycledNodesLock ());
+ tr_lockUnlock (lock);
}
}
--- End Message ---
--- Begin Message ---
Source: transmission
Source-Version: 2.84-3
We believe that the bug you reported is fixed in the latest version of
transmission, which is due to be installed in the Debian FTP archive.
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.
Sandro Tosi <[email protected]> (supplier of updated transmission 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: SHA256
Format: 1.8
Date: Sat, 02 Jan 2016 17:54:56 +0000
Source: transmission
Binary: transmission transmission-common transmission-dbg transmission-cli
transmission-gtk transmission-qt transmission-daemon
Architecture: source amd64 all
Version: 2.84-3
Distribution: unstable
Urgency: medium
Maintainer: Sandro Tosi <[email protected]>
Changed-By: Sandro Tosi <[email protected]>
Description:
transmission - lightweight BitTorrent client
transmission-cli - lightweight BitTorrent client (command line programs)
transmission-common - lightweight BitTorrent client (common files)
transmission-daemon - lightweight BitTorrent client (daemon)
transmission-dbg - lightweight BitTorrent client (debug symbols)
transmission-gtk - lightweight BitTorrent client (GTK+ interface)
transmission-qt - lightweight BitTorrent client (Qt interface)
Closes: 801299 801300 808333
Changes:
transmission (2.84-3) unstable; urgency=medium
.
* [6b8bb2a] fix a SIGSEGV due to racing in list node allocation;
Closes: #808333
* [40ec5cb] remove libappindicator3-dev from b-d; Closes: #801299
* [7ceb8fe] Fix black lines to be rendered when scrolling; Closes: #801300
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transmission-cli_2.84-3_amd64.deb
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transmission-dbg_2.84-3_amd64.deb
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transmission-qt_2.84-3_amd64.deb
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Checksums-Sha256:
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transmission_2.84-3.dsc
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transmission_2.84-3.debian.tar.xz
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transmission-cli_2.84-3_amd64.deb
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transmission-gtk_2.84-3_amd64.deb
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transmission-qt_2.84-3_amd64.deb
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transmission_2.84-3_all.deb
Files:
5619c544acbb7f0a7fd0e7fe03751794 2657 net optional transmission_2.84-3.dsc
308d1d6c8b0a1b6ab08a241d55b7d9d9 19748 net optional
transmission_2.84-3.debian.tar.xz
7426ba614bdc84a78f5189113e1bb4fb 393374 net optional
transmission-cli_2.84-3_amd64.deb
d95b4af0989df6f158a6a5646ed3bd42 257372 net optional
transmission-common_2.84-3_all.deb
deaa7fa095d5af1dc6d70f8affac6e03 210478 net optional
transmission-daemon_2.84-3_amd64.deb
ba00945979f02f2062029616e668e450 7007362 debug extra
transmission-dbg_2.84-3_amd64.deb
22acd74a20820cbf9011416cffb42df5 691026 net optional
transmission-gtk_2.84-3_amd64.deb
1aa0b014a40c2d50eb8d49805eaf2a1e 585656 net optional
transmission-qt_2.84-3_amd64.deb
4ae3e01d5a36c920ae329a185b4c5c4b 1142 net optional transmission_2.84-3_all.deb
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--- End Message ---
