[asterisk-bugs] [JIRA] (ASTERISK-23418) ast_read() on chan '...' called with no recorded file descriptor.

[Walter Doekes (JIRA)]

Walter Doekes created ASTERISK-23418:
----------------------------------------

             Summary: ast_read() on chan '...' called with no recorded file descriptor.
                 Key: ASTERISK-23418
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-23418
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
    Affects Versions: 1.8.26.0, SVN
            Reporter: Walter Doekes
            Severity: Minor


Error:
{noformat}
#ifdef AST_DEVMODE
                /*
                 * The ast_waitfor() code records which of the channel's file
                 * descriptors reported that data is available.  In theory,
                 * ast_read() should only be called after ast_waitfor() reports
                 * that a channel has data available for reading.  However,
                 * there still may be some edge cases throughout the code where
                 * ast_read() is called improperly.  This can potentially cause
                 * problems, so if this is a developer build, make a lot of
                 * noise if this happens so that it can be addressed.
                 *
                 * One of the potential problems is blocking on a dead channel.
                 */
                if (chan->fdno == -1) {
                        ast_log(LOG_ERROR,
                                "ast_read() on chan '%s' called with no recorded file descriptor.\n",
                                chan->name);
                }
#endif
{noformat}

Dialplan:
{noformat}
[default]
exten => channel_read,1,NoOp
 same => n,Dial(Local/channel_read_2 at default)
exten => channel_read_2,1,NoOp
 same => n,Hangup()
{noformat}

Execute:
{noformat}
*CLI> core show version
Asterisk SVN-branch-1.8-r409436 built by walter @ walter-desktop on a x86_64 running Linux on 2014-02-20 13:40:09 UTC

*CLI> channel originate Local/channel_read at default application Wait 1
{noformat}

Output:
{noformat}
    -- Executing [channel_read at default:1] NoOp("Local/channel_read at default-00000000;2", "") in new stack
    -- Executing [channel_read at default:2] Dial("Local/channel_read at default-00000000;2", "Local/channel_read_2 at default") in new stack
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
    -- Called Local/channel_read_2 at default
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
    -- Executing [channel_read_2 at default:1] NoOp("Local/channel_read_2 at default-00000001;2", "") in new stack
    -- Executing [channel_read_2 at default:2] Hangup("Local/channel_read_2 at default-00000001;2", "") in new stack
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
  == Spawn extension (default, channel_read_2, 2) exited non-zero on 'Local/channel_read_2 at default-00000001;2'
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
    -- No one is available to answer at this time (1:0/0/0)
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
    -- Auto fallthrough, channel 'Local/channel_read at default-00000000;2' status is 'NOANSWER'
[Mar  5 16:23:35] ERROR[20861]: channel.c:3870 __ast_read: ast_read() on chan 'Local/channel_read at default-00000000;1' called with no recorded file descriptor.
{noformat}




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