[asterisk-bugs] [JIRA] (ASTERISK-26759) Double free, ast_taskprocessor_execute->tps_task_free
Stuart Henderson (JIRA)
noreply at issues.asterisk.org
Mon Jan 30 04:36:10 CST 2017
Stuart Henderson created ASTERISK-26759:
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Summary: Double free, ast_taskprocessor_execute->tps_task_free
Key: ASTERISK-26759
URL: https://issues.asterisk.org/jira/browse/ASTERISK-26759
Project: Asterisk
Issue Type: Bug
Security Level: None
Components: Core/General
Affects Versions: 13.13.1
Environment: OpenBSD 6.0, amd64. Using chan_sip, odbc realtime, http manager.
Reporter: Stuart Henderson
Asterisk had been up and operating normally for a week then exited with a malloc(3) detected "chunk is already free" error (OpenBSD malloc has double-free detection enabled all the time). I get the following backtrace - short bt inline, output from "thread apply all bt full" is at https://junkpile.org/ast13.13.1-20170130.txt.
{noformat}
(gdb) bt
#0 0x00001f1890b581ca in thrkill () at <stdin>:2
#1 0x00001f1890b3e499 in *_libc_abort () at /usr/src/lib/libc/stdlib/abort.c:52
#2 0x00001f1890b82969 in wrterror (d=0x1f18437474d0,
msg=0x1f1890c9980d "chunk is already free", p=0x1f181121f990)
at /usr/src/lib/libc/stdlib/malloc.c:295
#3 0x00001f1890b82b3e in find_chunknum (d=0x1f18437474d0, r=<optimized out>,
ptr=0x1f181121f990) at /usr/src/lib/libc/stdlib/malloc.c:1054
#4 0x00001f1890b839b8 in free_bytes (ptr=<optimized out>, r=<optimized out>,
d=<optimized out>) at /usr/src/lib/libc/stdlib/malloc.c:1072
#5 ofree (pool=0x1f18437474d0, p=0x1f181121f990)
at /usr/src/lib/libc/stdlib/malloc.c:1337
#6 0x00001f1890b83e3b in free (ptr=0x1f1862aae680)
at /usr/src/lib/libc/stdlib/malloc.c:1364
#7 0x00001f15964a7209 in tps_task_free ()
#8 0x00001f15964a72eb in ast_taskprocessor_execute ()
#9 0x00001f15964af641 in worker_start ()
#10 0x00001f15964b97c5 in dummy_start ()
#11 0x00001f180e05e31e in _rthread_start (v=0x0)
at /usr/src/lib/librthread/rthread.c:115
#12 0x00001f1890b0b75b in __tfork_thread ()
at /usr/src/lib/libc/arch/amd64/sys/tfork_thread.S:75
#13 0x0000000000000000 in ?? ()
{noformat}
The following lines were logged 2 seconds before the timestamp of the core, however they have been seen on one previous occasion not associated with a crash.
{noformat}
Jan 30 09:41:50 pbx7 asterisk[39270]: WARNING[-1]: http.c:1948 in httpd_helper_thread: Failed to set TCP_NODELAY on HTTP connection, getprotobyname("tcp") failed
Jan 30 09:41:50 pbx7 asterisk[39270]: WARNING[-1]: http.c:1949 in httpd_helper_thread: Some HTTP requests may be slow to respond.
{noformat}
What other information would be useful? Is there anything I should capture in case it happens again? I have the core in case there's something you'd like me to poke at with gdb. Thanks.
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