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Bug 163201 - pppd leaks comm channel file descriptor to /etc/ppp/ip-up
Summary: pppd leaks comm channel file descriptor to /etc/ppp/ip-up
Alias: None
Product: Fedora
Classification: Fedora
Component: ppp
Version: 4
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Thomas Woerner
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2005-07-13 23:57 UTC by Krzysztof Halasa
Modified: 2007-11-30 22:11 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-08-29 12:11:35 UTC

Attachments (Terms of Use)
This patch to pppd seems to fix this bug. (deleted)
2005-07-14 00:02 UTC, Krzysztof Halasa
no flags Details | Diff

Description Krzysztof Halasa 2005-07-13 23:57:25 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050524 Fedora/1.0.4-4 Firefox/1.0.4

Description of problem:
pppd is designed to execute /etc/ppp/ip-up after IP negotiation is complete. To accomplish this is forks, closes internat file descriptors and execs ip-ip. However, it fails to close devfd, the file descriptor of the communication channel. If ip-up spawns further programs (such as a daemon), the file descriptor may remain open and pppd is unable to close/free the channel (in my case, ATM PVC
over Speed Touch DSL). For example, I can't restart pppd etc.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. add "sleep 3600" to /etc/ppp/ip-up
2. run pppd (I use speedtch and pppoatm kernel drivers as the channel)
3. kill the pppd process

Actual Results:  pppd failed to free communication channel - cat /proc/net/atm/vc shows the PVC connection is still in use. It will be closed when "sleep 3600" timeouts or is killed.

Expected Results:  ppp should have closed (destroyed) the PVC.

Additional info:

Comment 1 Krzysztof Halasa 2005-07-14 00:02:43 UTC
Created attachment 116728 [details]
This patch to pppd seems to fix this bug.

Comment 2 Christian Iseli 2007-01-22 11:57:55 UTC
This report targets the FC3 or FC4 products, which have now been EOL'd.

Could you please check that it still applies to a current Fedora release, and
either update the target product or close it ?


Comment 3 Thomas Woerner 2007-07-23 15:32:30 UTC
Can you please try to rebuild and use the FC-5 ppp package, it contains lots of
fd fixes.

Comment 4 Thomas Woerner 2007-08-29 12:11:35 UTC
This bug entry was in needinfo for some time. Closing due to user inactivity as

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