0001079: telnetd quits on SIGPIPE - BusyBox Bug and Patch Tracking

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Category

Severity

Reproducibility

Date Submitted

Last Update

0001079

[BusyBox] Networking Support

crash

random

11-01-06 01:42

11-29-06 06:40

Reporter

jmunsin

View Status

public

Assigned To

BusyBox

Priority

normal

Resolution

fixed

Status

closed

Product Version

1.00

Summary

0001079: telnetd quits on SIGPIPE

Description

The line

w = write(ts->sockfd, ts->buf2 + ts->wridx2, maxlen);

in telnetd.c may cause a SIGPIPE. The default handler for
SIGPIPE is to terminate => telnetd quits. This is wrong,
at least if you are using telnetd in stand alone mode.

Reproducing this is a bit tricky (timing/load dependant?),
but my scripts can reproduce it after connecting 200-300 times.

A quick fix is to run signal(SIGPIPE, SIG_IGN);, but perhaps there
is a better way to handle this.

Additional Information

Attached Files

Relationships

Notes
(0001768) vda 11-22-06 13:12	Added signal(SIGPIPE, SIG_IGN) among many other changes (standalone+inetd support, fixed IPv6 and IPv6+IPv4 support). Can you test current svn version?

Issue History
Date Modified	Username	Field	Change
11-01-06 01:42	jmunsin	New Issue
11-01-06 01:42	jmunsin	Status	new => assigned
11-01-06 01:42	jmunsin	Assigned To	=> BusyBox
11-22-06 13:12	vda	Note Added: 0001768
11-22-06 13:12	vda	Status	assigned => feedback
11-29-06 06:40	vda	Status	feedback => closed
11-29-06 06:40	vda	Resolution	open => fixed
11-29-06 06:40	vda	Fixed in Version	=> 1.2.x