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DateSat, 15 Feb 1997 21:37:52 -0500 (EST)
FromJon Lewis <>
Subjectpppd 2.2.0f strangeness
Has anyone ever seen this sort of thing?

Feb 15 09:17:55 endor pppd[3830]: pppd 2.2.0 started by riherd, uid 333
Feb 15 09:17:55 endor pppd[3830]: Using interface ppp36
Feb 15 09:17:55 endor pppd[3830]: Connect: ppp36 <--> /dev/ttyCh
Feb 15 09:17:56 endor pppd[3830]: local  IP address 205.229.48.4
Feb 15 09:17:56 endor pppd[3830]: remote IP address 205.229.51.146
Feb 15 09:17:56 endor pppd[3830]: local  IP address 205.229.48.4
Feb 15 09:17:56 endor pppd[3830]: remote IP address 205.229.51.146

[this repeats _many_ times/s and then]

Feb 15 09:18:10 endor pppd[3830]: local  IP address 205.229.48.4
Feb 15 09:18:10 endor pppd[3830]: remote IP address 205.229.51.146
Feb 15 09:18:54 endor in.fingerd[4397]: connect from ewok.fdt.net
Feb 15 09:18:46 endor kernel: Couldn't get a free page.....
Feb 15 09:20:09 endor pppd[3776]: Hangup (SIGHUP)
Feb 15 09:20:16 endor pppd[3776]: Modem hangup
Feb 15 09:20:25 endor pppd[3776]: Connection terminated.
Feb 15 09:20:28 endor pppd[3776]: Exit.
Feb 15 09:18:10 endor pppd[3830]: local  IP address 205.229.48.4
Feb 15 09:18:10 endor pppd[3830]: remote IP address 205.229.51.146
[more repetition clipped...then finally pppd seems to terminate]

Feb 15 09:19:30 endor pppd[3830]: IPCP: timeout sending Config-Requests

Note...it looks as if the system ran short on memory...I'm assuming the
pppd process 3830 fell into some sort of "infinite" loop, terminated only
when ipcp timed out, with a memory leak as a side affect.  Look at the
freelog (kept for historic reasons back when these boxes used to be pretty
unstable) 

Here we are just before the problem.  System is at half capacity portwise,
plenty of RAM to spare, no load.

  9:15am  up 34 days, 19:08, 34 users,  load average: 0.04, 0.07, 0.03
             total       used       free     shared    buffers     cached
Mem:         31012      30756        256      18700       2716       6572
-/+ buffers:            21468       9544
Swap:        61696          0      61696

Here we are just after it....and that must have been a monster pppd process
to have just released 17+mb of RAM...and look at that load avg!
Sat Feb 15 09:20:30 EST 1997
  9:20am  up 34 days, 19:13, 34 users,  load average: 96.34, 44.31, 16.85
             total       used       free     shared    buffers     cached
Mem:         31012      13528      17484       3012        196       1136
-/+ buffers:            12196      18816
Swap:        61696       9292      52404

Shortly after this, the system returned to a normal state, and is still
running.  I suspect some of it is because I'm running an older syslogd
that fsync's on every write...so that tight loop with the IP addresses
being syslog'd must have really been a kick in the balls for the disk, not
to mention all the swapping that happened.  Time to upgrade some more
systems.

Kernel is 2.0.27, compiled ELF with gcc 2.7.2.1.  pppd is a.out compiled
with 2.6.3, libc 4.7.6.  I've run a number of similar boxes for nearly 2
years and never seen this happen.

I just went looking for ppp-2.2.0g, and can't find it.  It's not in the
places I know to look, and ftp.sii.com looks as if Al may have left them.
I'd hoped to check to see if this was perhaps a documented/fixed bug.

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 Jon Lewis <jlewis@fdt.net>  |  Unsolicited commercial e-mail will
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