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Bug 22300 - bind & syslogd deadlock under high load
bind & syslogd deadlock under high load
Product: Red Hat Linux
Classification: Retired
Component: sysklogd (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Bill Nottingham
David Lawrence
Depends On:
  Show dependency treegraph
Reported: 2000-12-14 10:26 EST by Kirill Pushkin
Modified: 2014-03-16 22:17 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2000-12-15 11:02:31 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Kirill Pushkin 2000-12-14 10:26:30 EST
Speciality: syslogd is configured to receive external messages from
Cisco router.

Sometimes (may take a week) under high load named hangs until its restart.
strace -p <named_pid> says:
send(3,"<syslog message>

After disabling of receiving of external messages by syslogd all work
just fine.

Possible problem: syslog resolves IP to name for external message, but
named is busy by sending message to syslog in that time.
Comment 1 Kirill Pushkin 2000-12-14 10:28:22 EST
btw, rpm -q bind sysklogd :

Comment 2 Bill Nottingham 2000-12-30 02:01:11 EST
This will be fixed in sysklogd-1.4-4, which will be in the next
rawhide release; you will be able to start syslogd with the '-x'
option that disables reverse lookups of incoming messages.

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