View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0002874 | GNUnet | public | 2013-04-27 15:49 | 2013-12-24 20:55 | |
| Reporter | Florian Dold | Assigned To | Sree Harsha Totakura | ||
| Priority | high | Severity | minor | Reproducibility | N/A |
| Status | closed | Resolution | fixed | ||
| Product Version | Git master | ||||
| Target Version | 0.10.0 | Fixed in Version | 0.10.0 | ||
| Summary | 0002874: Assertion failed at stream_api.c:1345. | ||||
| Description | A stream socket connected to another stream socket on the same host sometimes fails with this assertion in a scheduled task. This bug seems to be non-deterministic and somewhat timing-sensitive, as with -LDEBUG the problem does not occur as often. I can't infer from the source code what the cause of this assertion is, I think this should be commented. | ||||
| Additional Information | #0 0x00007ffff75d6037 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 #1 0x00007ffff75d9698 in __GI_abort () at abort.c:90 #2 0x00007ffff7b89af9 in GNUNET_abort () at common_logging.c:293 #3 0x00007ffff7969ba6 in set_state_established (cls=<optimized out>, socket=0x76b060) at stream_api.c:1344 #4 0x00007ffff7969402 in send_message_notify (cls=0x76b060, size=<optimized out>, buf=<optimized out>) at stream_api.c:634 #5 0x00007ffff66ce5c1 in send_callback (cls=0x76b290, size=236, buf=<optimized out>) at mesh_api.c:1564 #6 0x00007ffff7b85e6c in client_notify (cls=0x76b660, size=236, buf=0x76c570) at client.c:1054 #7 0x00007ffff7b8edae in process_notify (connection=0x76b420) at connection.c:1183 #8 transmit_ready (cls=0x76b420, tc=<optimized out>) at connection.c:1314 #9 0x00007ffff7bb6b79 in run_ready (ws=0x60a3d0, rs=0x60a340) at scheduler.c:597 #10 GNUNET_SCHEDULER_run (task=task@entry=0x7ffff7bbe900 <service_task>, task_cls=task_cls@entry=0x7fffffffddb0) at scheduler.c:786 | ||||
| Tags | No tags attached. | ||||
| parent of | 0002877 | closed | Sree Harsha Totakura | stream doesn't distinguish between the application ports |
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Isolated the bug, execute gnunet-set-bug to see it happen. Not that you may have to execute it multiple times, as it does not always occur. |
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I cannot execute gnunet-set-bug. Stream depends on lockmanager and since the test case doesn't use testing library to start, it is getting blocked when stream tries to access lockmanager server which is not started. How did you execute it? After a default timeout I get this segfault: 0x00007f7f3a77dbc6 in GNUNET_STREAM_read (socket=0x0, timeout=..., proc=0x4008ec <stream_data_processor>, proc_cls=0x0) at stream_api.c:3677 #1 0x0000000000400937 in listen_cb (cls=0x0, socket=0x0, initiator=0x0) at gnunet-set-bug.c:55 #2 0x00007f7f3a77b4d6 in lockmanager_acquire_timeout (cls=0x1f08670, tc=0x7fff1bafebf0) at stream_api.c:3038 #3 0x00007f7f3a9ce3a1 in run_ready (rs=0x1ef6460, ws=0x1ef64f0) at scheduler.c:597 #4 0x00007f7f3a9cebf0 in GNUNET_SCHEDULER_run (task=0x7f7f3a9c9464 <program_main>, task_cls=0x7fff1bafee90) at scheduler.c:786 #5 0x00007f7f3a9c9e9b in GNUNET_PROGRAM_run2 (argc=1, argv=0x7fff1baff068, binaryName=0x400b05 "gnunet-set", binaryHelp=0x400b00 "help", options=0x400b20, task=0x40094c <run>, task_cls=0x0, run_without_scheduler=0) at program.c:273 #6 0x0000000000400a1a in main (argc=1, argv=0x7fff1baff068) at gnunet-set-bug.c:103 |
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Ok, lockmanger dependency seems to be solved if I start my local peer... |
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I don't know if this helps, but I get the following warning, but only the first time the stream assertion fails: fs-12542 WARNING External protocol violation detected at stream_api.c:2973. |
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I can also still reproduce this. |
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Cause of this bug stems from 0002877 as we start the local peer which starts FS to start a stream server. Then, gnunet-bug-set again opens a stream server and its client is confused by 2 servers responding to it. The client should nevertheless be made robust to deal with such mishaps/exploits. |
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fixed in SVN 27014 |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2013-04-27 15:49 | Florian Dold | New Issue | |
| 2013-04-27 15:49 | Florian Dold | Status | new => assigned |
| 2013-04-27 15:49 | Florian Dold | Assigned To | => Sree Harsha Totakura |
| 2013-04-27 16:17 | Florian Dold | Note Added: 0007065 | |
| 2013-04-27 16:27 | Florian Dold | Note Edited: 0007065 | |
| 2013-04-28 06:46 | Sree Harsha Totakura | Note Added: 0007068 | |
| 2013-04-28 06:49 | Sree Harsha Totakura | Note Added: 0007069 | |
| 2013-04-29 14:44 | Florian Dold | Note Added: 0007071 | |
| 2013-04-30 14:08 | Christian Grothoff | Note Added: 0007072 | |
| 2013-04-30 16:06 | Sree Harsha Totakura | Relationship added | parent of 0002877 |
| 2013-04-30 16:10 | Sree Harsha Totakura | Note Added: 0007073 | |
| 2013-05-02 10:26 | Sree Harsha Totakura | Note Added: 0007075 | |
| 2013-05-02 10:26 | Sree Harsha Totakura | Status | assigned => resolved |
| 2013-05-02 10:26 | Sree Harsha Totakura | Fixed in Version | => 0.10.0 |
| 2013-05-02 10:26 | Sree Harsha Totakura | Resolution | open => fixed |
| 2013-05-13 08:49 | Christian Grothoff | Target Version | => 0.10.0 |
| 2013-12-24 20:55 | Christian Grothoff | Status | resolved => closed |
| 2014-12-15 19:13 | Christian Grothoff | Category | stream library => (No Category) |
