[asterisk-bugs] [JIRA] (ASTERISK-21395) High CPU use due to invalid time limit passed to kevent() in pbx_spool.c:scanthread

[Matt Jordan (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-21395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Jordan closed ASTERISK-21395.
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    Resolution: Duplicate

This is a duplicate of ASTERISK-21176, which will be fixed in Asterisk 11.4.0. There is currently an RC available with this fix, Asterisk 11.4.0-rc1. Please test with that version. If you still have an issue, please let a bug marshal know and we will reopen this issue. Thanks!
                
> High CPU use due to invalid time limit passed to kevent() in pbx_spool.c:scanthread
> -----------------------------------------------------------------------------------
>
>                 Key: ASTERISK-21395
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-21395
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/PBX
>    Affects Versions: 11.3.0
>         Environment: OpenBSD since switching to kernel backed threads (in 5.1)
>            Reporter: Stuart Henderson
>
> scan_thread() (pbx_spool.c:754) passes an invalid time limit (INT_MAX) to kevent() if the directory list is empty. This results in high CPU use as the call fails with EINVAL (see line 613 of http://www.openbsd.org/cgi-bin/cvsweb/src/sys/kern/kern_time.c?annotate=1.77) and hits the "continue". So in the case where next == INT_MAX, NULL should be passed instead.
> Obvious patch is in OpenBSD ports, I won't submit it here directly as I don't particularly want to sign a license disclaimer, but it wouldn't be a big surprise if anyone looking at this came up with an identical fix ;)

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