0003555: Escaping units with kill orders on them cause segmentation fault on Linux/Mac

Notes
(0013856) Toady One (administrator) 2010-11-15 02:20	I can't reproduce this. If there's a save where it is about to happen or such a save could be created and uploaded to the DF File Depot or wherever, that would likely help a lot.

(0013977) Levitator (reporter) 2010-11-18 10:09 edited on: 2010-11-18 10:12	Toady, I have a save where this happens reliably with a squad of Goblin ambushers. In this save, the goblin is about to leave the top edge, but it also happened when I drove them off to the left, from which they arrived. 31.18 on Ubuntu 32 10.04 http://dffd.wimbli.com/file.php?id=3437 [^] This is my first fortress, don't judge me.

(0013982) greycat (reporter) 2010-11-18 13:08 edited on: 2010-11-18 13:11	Just happened to me in .18, on Debian 5.0 i386. It left a core file but the backtrace was pretty useless-looking: (gdb) bt #0 0x0886a9c0 in ?? () #1 0x08a5ac55 in ?? () #2 0x00000041 in ?? () #3 0x0000000b in ?? () #4 0x00ffffff in ?? () #5 0x00000011 in ?? () #6 0x00000000 in ?? () I deleted the core file at that point, since it was 700 MB. Specifically, my dwarves were chasing the kobold thief, got distracted by a second one, killed him, then ALMOST caught up to the first one before he escaped off the top of the map.

(0013986) Footkerchief (manager) 2010-11-18 13:18	Reminder sent to: Toady One Hey Toady -- as requested, a save was posted for this one. This report and all of the (probable) duplicates are using Linux, so it might not show up in Windows.

(0014020) DrunkenMonk (reporter) 2010-11-19 08:41	This has been happening to me with kobold ambushers, near the edge of the map, always with kill orders on them. I've seen nothing but kobolds and forgotten beasts so I haven't been able to test if other unit types trigger the crash. I'm on df_linux .18, ubuntu 10.10 32 bit.

(0014041) deekoo (reporter) 2010-11-19 23:11	Another savefile demonstrating the crash (with replication instructions) is at http://dffd.wimbli.com/file.php?id=3449 [^]

(0014090) lattenwald (reporter) 2010-11-21 08:12	http://dffd.wimbli.com/file.php?id=3458 [^] In this savegame kobold is ready to leave map. As soon as he is out the game crashes. Tested on Gentoo, 0.31.18

(0014155) schedal (reporter) 2010-11-22 22:06 edited on: 2010-11-22 22:07	Same issue with v0.31.17 mac osx 10.6.4 If my military set kill order on a kobold, when he leaves the map, game crashes hard: 2010-11-22 21:55:19.662 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x2faa35b0 of class NSCFArray autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.662 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1e00f50 of class NSCFNumber autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.663 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1d04f350 of class NSCFDictionary autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.663 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1a63300 of class NSCFString autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.664 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1e00540 of class NSCFNumber autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.665 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1a23a60 of class NSCFDictionary autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.666 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x2fa8e450 of class NSCFArray autoreleased with no pool in place - just leaking 2010-11-22 21:55:19.667 dwarfort.exe[15379:5303] * __NSAutoreleaseNoPool(): Object 0x1a621a0 of class SDL_QuartzWindow autoreleased with no pool in place - just leaking /Applications/df_osx/df: line 5: 15379 Bus error ./dwarfort.exe logout Can provide save file if it is of interest. As a work around, I guess I shouldn't try and kill thieves? :/

(0014204) Draupnir (reporter) 2010-11-25 03:35	Same issue with 0.3.18 If another save is needed or any further information I can post.

(0014247) Silvanus (reporter) 2010-11-27 12:41	Happened also with a Rhesus macaque (or whatever the name) who stole stuff.

(0014269) ethanb (reporter) 2010-11-27 21:21	Just happened to me when I set my kill order from list on a migrating crundle, so it has nothing to do with ITEM_THIEF.

(0014272) Meekohi (reporter) 2010-11-27 22:38	I just experienced the same behavior, but with a goblin on Mac: 2010-11-28 01:33:02.570 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1a9a360 of class NSCFArray autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x906c3937 0x907289e2 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.571 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1af9630 of class NSCFString autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x906be607 0x97db138a 0x97d403cd 0x97d4074d 0x943c07db 0x906bc331 0x90728a67 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.572 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1a0eb50 of class NSCFNumber autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x906bc3e6 0x90728a67 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.572 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1a3ddf0 of class NSCFDictionary autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x97e261be 0x906bc40e 0x90728a67 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.573 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1a0d950 of class NSCFNumber autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x906bc3e6 0x90728ac4 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.573 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x21d6e9e0 of class NSCFDictionary autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x97e261be 0x906bc40e 0x90728ac4 0x9072898c 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.573 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1d36f520 of class NSCFArray autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x90728fb4 0x90728d1a 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.574 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x21de0670 of class NSCFArray autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x906c3937 0x90728e33 0x907988f0 0x90784c14 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.575 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x21dc1cd0 of class NSCFArray autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x97e1ebf5 0x943ff0fb 0x9072bb8b 0x90784ca1 0x9078405c 0x90798809 0x907da1ad 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) 2010-11-28 01:33:02.575 dwarfort.exe[11066:4e03] * _NSAutoreleaseNoPool(): Object 0x1af3a70 of class SDL_QuartzWindow autoreleased with no pool in place - just leaking Stack: (0x944abf4f 0x943b8432 0x907da210 0x17a31ca 0x17a3d27 0x1797af5 0x179cef5 0x179cfb2 0x179cb5f 0x9322e2bb 0xffffffff) ./df: line 5: 11066 Bus error ./dwarfort.exe

(0014376) thgndrd (reporter) 2010-12-02 14:52	same issue also with a kobold thief, just when the thief is able to run out of the map border http://dl.dropbox.com/u/3080927/region1.7z [^] happens about 10-20 minutes in game (forgot to save to a closer time)

(0014416) dai-rasa (reporter) 2010-12-05 13:49	I just ran in to this issue as well, after driving off a raiding party. Running 0.31.18 on Ubuntu 10.10 Natively. The save is right at the point several goblins, both raiders and thief's and think even some snatchers try to run off from my 'army'. http://dffd.wimbli.com/file.php?id=3527 [^] Thankfully, I'd auto-save on seasonal so it could not have picked a better spot.

(0014667) dglidden (reporter) 2010-12-21 07:42	I'm getting the same with 31.18 on mac with the same "no pool in place - just leaking" errors and segfault. I've had kill orders on some groundhogs and various other animals, so as mentioned, it's not just on goblin/kobold thieves, but any old thing that runs off the map while there is a kill order on it.

(0014678) Puersenexa (reporter) 2010-12-22 06:46	I get the same issue on Mac - kill target running off map causes no pool in place - just leaking crash. I'm still new, so not sure how to set up autosave, I just keep making new fortresses lol

(0014683) burlingk (reporter) 2010-12-23 06:49	I am getting this as well. 31.8 under Linux. I just let a kobold run off the screen, and got a segfault. However, second time through, I took the kill order off before he left the screen, and no crash. It only happens if the kill order is in place when they leave. In 31.16 the unit would just be left "unable to fulfill order" until you noticed it and canceled the kill order manually. Now it crashes.

(0014727) tracyam (reporter) 2010-12-27 15:15	Same or similar problem with 31.18 under Ubuntu 10.10 x64. Mine seems to segfault any time a kill order is assigned if the target tries to run, they don't have to make it to the map edge, just far enough for my militia to give up.

(0014783) FlyingBishop (reporter) 2011-01-04 09:59	Same as tracyam, though it segfaulted the instant I gave the kill order.

(0014827) nickajeglin (reporter) 2011-01-07 19:52	Just had this happen on 31.18 in Ubuntu 10.10. Segfault immediately as the kobold left the map. No "no pool in place" errors.

(0014840) hyperactiveChipmunk (reporter) 2011-01-10 12:25	"No pool in place" is a Mac thing, referring to the NSAutoreleasePool object used for managing memory allocations. It doesn't specifically have any relevance to this bug; the messages are likely just a side effect of all the other badness going on.

(0014851) Xadism (reporter) 2011-01-12 16:22	Fast/easy reproduction: http://dffd.wimbli.com/file.php?id=3687 [^] This is a fortress saved a few steps before an attack-designated kobold exits the map. After unpause, it will crash within a few seconds on a Mac. (But runs fine on Windows).

(0014941) royal_shadow (reporter) 2011-01-26 18:43	Yeah, playing on a mac, at least I am not the first to find it, makes me feel better. Has happened every time I send someone to chase down the beastie and it runs away like brave, brave Sir Robin.

(0015332) ricree (reporter) 2011-02-20 11:26	The issue is definitely present on 0.31.19 running Ubuntu 10.04. Seems to be any creature that flees from contact. Gremlins, in particular, are a unit I've experienced it against.

(0015454) Infiltrator (reporter) 2011-02-24 10:28 edited on: 2011-02-24 10:29	Speculation: I would say that the reason this crash happens on Linux and not windoze is because the Linux kernel (also used by mac osx) is a lot more strict with segfaults than windoze, but the actual underlying problem is the same. Toady, I'm guessing that when a unit leaves the map, you delete/free* the object, but the squad still references it, and tries to get something (perhaps its name) from it, and so it segfaults. Just a guess, but hope it helps you in the correct direction. Windows users: what do you see when you have a squad targeting a unit that leaves the map? What do you see in your squad screen? Does it still say "kill x"? * What programming language are you using, anyway?

(0015459) Footkerchief (manager) 2011-02-24 12:06	DF is programmed in C++.

(0015632) Meekohi (reporter) 2011-03-01 13:29	Let's get this fixed.

(0015723) carlthuringer (reporter) 2011-03-03 18:30	Just had the crash on Ubuntu. DF v0.31.19. Noticed a goblin survived an ambush and issued a kill order for all my squads. As soon as the gobbo left the map the game window disappeared. Terminal message "Segmentation fault".

(0015923) AbuDhabi (reporter) 2011-03-07 13:30	Happens in 0.31.21: http://dffd.wimbli.com/file.php?id=3920 [^] In this save, there's a kill order on a goblin thief. When he escapes, the game crashes. I have managed to reproduce this reliably.

(0016127) TeachingJoy (reporter) 2011-03-11 14:19	So how are players adapting? Do we just have to be careful about kill orders for a while until a bug fix in an upcoming update, or is there something we can mod now so there's no segfault? (I'm sorry if this is obvious, but my geekery is in 17th century lit instead of programming.)

(0016128) Granite26 (reporter) 2011-03-11 14:30	I would imagine canceling the order when the kobold gets close to the edge would do it. Or just use move orders.

(0016131) Infiltrator (reporter) 2011-03-11 18:48	Yeah; until this bug is fixed I just don't issue kill orders on anything near the edge and savescum just before combat in case I get a crash and have to revert to a save a season ago. :P

(0016180) bombcar (reporter) 2011-03-12 18:19	I am using move orders at this time; however, since I haven't gotten my military to a point where they can kill a butterfly it doesn't make much difference.

Issue History
Date Modified	Username	Field	Change
2010-11-12 03:19	kasdaye	New Issue
2010-11-12 10:08	kasdaye	Tag Attached: crash
2010-11-13 16:03	Logical2u	Relationship added	has duplicate 0003591
2010-11-15 02:20	Toady One	Note Added: 0013856
2010-11-15 02:20	Toady One	Assigned To	=> Toady One
2010-11-15 02:20	Toady One	Status	new => acknowledged
2010-11-18 10:09	Levitator	Note Added: 0013977
2010-11-18 10:12	Levitator	Note Edited: 0013977	View Revisions
2010-11-18 13:08	greycat	Note Added: 0013982
2010-11-18 13:11	Footkerchief	Note Edited: 0013982	View Revisions
2010-11-18 13:13	Footkerchief	Relationship added	has duplicate 0003661
2010-11-18 13:14	Footkerchief	Relationship added	has duplicate 0003606
2010-11-18 13:18	Footkerchief	Note Added: 0013986
2010-11-18 13:18	Footkerchief	Note View State: 0013986: private
2010-11-19 08:41	DrunkenMonk	Note Added: 0014020
2010-11-19 20:28	Logical2u	Relationship added	has duplicate 0003679
2010-11-19 23:11	deekoo	Note Added: 0014041
2010-11-20 17:06	Logical2u	Relationship added	has duplicate 0003695
2010-11-21 07:55	Logical2u	Relationship added	has duplicate 0003702
2010-11-21 08:01	Khym Chanur	Issue Monitored: Khym Chanur
2010-11-21 08:12	lattenwald	Note Added: 0014090
2010-11-21 09:07	Logical2u	Relationship added	related to 0000114
2010-11-21 09:10	Logical2u	Issue Monitored: malimbar04
2010-11-22 22:06	schedal	Note Added: 0014155
2010-11-22 22:07	schedal	Note Edited: 0014155	View Revisions
2010-11-24 23:11	Logical2u	Relationship added	has duplicate 0003726
2010-11-25 03:35	Draupnir	Note Added: 0014204
2010-11-26 07:30	Footkerchief	Relationship added	has duplicate 0003729
2010-11-26 12:36	Taranli Maren	Issue Monitored: Taranli Maren
2010-11-26 14:24	Logical2u	Relationship added	has duplicate 0003735
2010-11-27 12:41	Silvanus	Note Added: 0014247
2010-11-27 21:21	ethanb	Note Added: 0014269
2010-11-27 22:38	Meekohi	Note Added: 0014272
2010-11-30 15:33	Logical2u	Relationship added	has duplicate 0003760
2010-11-30 15:33	Logical2u	Issue Monitored: sunfire1226
2010-12-01 08:39	Footkerchief	Sticky Issue	No => Yes
2010-12-01 08:39	Footkerchief	Relationship added	has duplicate 0003464
2010-12-01 08:40	Footkerchief	Relationship added	has duplicate 0003608
2010-12-02 14:52	thgndrd	Note Added: 0014376
2010-12-05 13:49	dai-rasa	Note Added: 0014416
2010-12-05 13:50	dai-rasa	Issue Monitored: dai-rasa
2010-12-05 17:33	hyperactiveChipmunk	Issue Monitored: hyperactiveChipmunk
2010-12-07 19:38	Footkerchief	Relationship added	has duplicate 0003785
2010-12-11 10:06	Footkerchief	Summary	Escaping kobold thief (w/ kill order on it) causes seg fault => Escaping kobold thief (w/ kill order on it) causes seg fault on Linux/Mac
2010-12-16 00:12	Logical2u	Relationship added	has duplicate 0003813
2010-12-16 00:13	Logical2u	Summary	Escaping kobold thief (w/ kill order on it) causes seg fault on Linux/Mac => Escaping units with kill orders on them cause seg fault on Linux/Mac
2010-12-21 07:42	dglidden	Note Added: 0014667
2010-12-22 06:46	Puersenexa	Note Added: 0014678
2010-12-23 06:49	burlingk	Note Added: 0014683
2010-12-24 15:41	Logical2u	Relationship added	has duplicate 0003840
2010-12-27 15:15	tracyam	Note Added: 0014727
2010-12-28 08:39	Footkerchief	Relationship added	has duplicate 0003847
2011-01-04 09:59	FlyingBishop	Note Added: 0014783
2011-01-04 13:55	Hieronymous Alloy	Issue Monitored: Hieronymous Alloy
2011-01-06 00:24	Dwarfu	Relationship added	has duplicate 0003864
2011-01-07 19:52	nickajeglin	Note Added: 0014827
2011-01-10 12:25	hyperactiveChipmunk	Note Added: 0014840
2011-01-12 16:22	Xadism	Note Added: 0014851
2011-01-26 18:43	royal_shadow	Note Added: 0014941
2011-02-05 16:38	Dwarfu	Relationship added	has duplicate 0003933
2011-02-07 21:17	amacleod	Issue Monitored: amacleod
2011-02-17 18:25	tg90nor	Issue Monitored: tg90nor
2011-02-20 11:26	ricree	Note Added: 0015332
2011-02-23 21:12	Supermathie	Issue Monitored: Supermathie
2011-02-24 06:03	Hieronymous Alloy	Issue End Monitor: Hieronymous Alloy
2011-02-24 09:31	Infiltrator	Issue Monitored: Infiltrator
2011-02-24 10:28	Infiltrator	Note Added: 0015454
2011-02-24 10:29	Infiltrator	Note Edited: 0015454	View Revisions
2011-02-24 12:06	Footkerchief	Note Added: 0015459
2011-02-24 23:19	Technomage	Issue Monitored: Technomage
2011-03-01 13:29	Meekohi	Note Added: 0015632
2011-03-03 18:30	carlthuringer	Note Added: 0015723
2011-03-07 12:51	Footkerchief	Relationship added	has duplicate 0004158
2011-03-07 13:30	AbuDhabi	Note Added: 0015923
2011-03-11 09:03	Dwarfu	Relationship added	has duplicate 0004194
2011-03-11 14:19	TeachingJoy	Note Added: 0016127
2011-03-11 14:30	Granite26	Note Added: 0016128
2011-03-11 18:48	Infiltrator	Note Added: 0016131
2011-03-12 05:42	Dwarfu	Relationship added	has duplicate 0004199
2011-03-12 18:19	bombcar	Note Added: 0016180
2011-03-12 18:19	bombcar	Issue Monitored: bombcar
2011-03-13 18:39	Footkerchief	Note View State: 0013986: public
2011-03-16 13:28	Footkerchief	Relationship added	has duplicate 0004240
2011-03-16 13:29	Footkerchief	Summary	Escaping units with kill orders on them cause seg fault on Linux/Mac => Escaping units with kill orders on them cause segmentation fault on Linux/Mac
2011-03-19 14:50	Dawide	Issue Monitored: Dawide
2011-03-19 17:52	Toady One	Status	acknowledged => resolved
2011-03-19 17:52	Toady One	Fixed in Version	=> 0.31.22
2011-03-19 17:52	Toady One	Resolution	open => fixed
2011-03-19 18:37	Dawide	Issue End Monitor: Dawide
2011-03-19 20:02	Khym Chanur	Issue End Monitor: Khym Chanur
2011-03-20 04:27	Infiltrator	Issue End Monitor: Infiltrator
2011-03-21 11:15	dai-rasa	Issue End Monitor: dai-rasa
2011-03-22 22:50	Footkerchief	Sticky Issue	Yes => No
2011-03-24 10:10	hyperactiveChipmunk	Issue End Monitor: hyperactiveChipmunk