[asterisk-bugs] [Asterisk 0015719]: [patch] Crash in ast_readaudio_callback

[Asterisk Bug Tracker]

A NOTE has been added to this issue. 
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https://issues.asterisk.org/view.php?id=15719 
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Reported By:                rgj
Assigned To:                
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Project:                    Asterisk
Issue ID:                   15719
Category:                   Core/FileFormatInterface
Reproducibility:            unable to reproduce
Severity:                   crash
Priority:                   normal
Status:                     acknowledged
Target Version:             1.4.28
Asterisk Version:           1.4.26 
Regression:                 No 
SVN Branch (only for SVN checkouts, not tarball releases): N/A 
SVN Revision (number only!):  
Request Review:              
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Date Submitted:             2009-08-14 01:57 CDT
Last Modified:              2009-09-10 14:18 CDT
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Summary:                    [patch] Crash in ast_readaudio_callback
Description: 
We're experiencing almost-daily crashes in ast_readaudio_callback.
There seems to be corruption in the ast_filestream structure.

At first we thought it was just another appearance of issue 15616 (random
crashes) but currently we're experiencing the same crash at the same
point.

Every time it's a different agent, and a different extension. We have been
completely unable to reproduce this behaviour. It occurs at seemingly
random moments.
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Relationships       ID      Summary
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related to          0015109 [patch] Abort by memory allocator, poss...
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 (0110499) rgj (reporter) - 2009-09-10 14:18
 https://issues.asterisk.org/view.php?id=15719#c110499 
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We had another crash yesterday, patch issue_15719-debug1.diff.txt was
applied
Nothing was logged since we started using the patched version

[root at g1 core]# grep "Found a non-zero" full-20090909 
[root at g1 core]# 


(gdb) frame 7
https://issues.asterisk.org/view.php?id=7  0x0809de53 in ast_readaudio_callback
(s=0x9ad9750) at file.c:752
752                     fr = s->fmt->read(s, &whennext);
(gdb) print *s
$3 = {fmt = 0x99158a8, flags = 0, mode = 0, filename = 0x0, realfilename =
0x0, vfs = 0x0, trans = 0x0, tr = 0x0, 
  lastwriteformat = 0, lasttimeout = 160, owner = 0x9a85990, f =
0x9baf9d8, fr = {frametype = AST_FRAME_VOICE, 
    subclass = 64, datalen = 320, samples = 160, mallocd = 0,
mallocd_hdr_len = 0, offset = 64, src = 0x99158a8 "wav", 
    data = 0x9ada80c, delivery = {tv_sec = 0, tv_usec = 0}, frame_list =
{next = 0x0}, flags = 0, ts = 0, len = 0, 
    seqno = 0}, buf = 0x9ada7cc "", {_private = 0x9ada94c, private =
0x9ada94c}, orig_chan_name = 0x0, 
  big_waste_of_memory = '\0' <repeats 4095 times>}

See attachment crash-20090909.txt for more details 

Issue History 
Date Modified    Username       Field                    Change               
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2009-09-10 14:18 rgj            Note Added: 0110499                          
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