0000379: Control-C (SIGINT) is ignored or creates zombie processes

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000379

[BusyBox] Other

minor

always

08-11-05 21:34

02-14-08 04:37

Reporter

swth

View Status

public

Assigned To

BusyBox

Priority

normal

Resolution

fixed

Status

closed

Product Version

1.00

Summary

0000379: Control-C (SIGINT) is ignored or creates zombie processes

Description

1) Control-C (SIGINT) is ignored

During system initialization (inittab - script invoked by ::sysinit:/etc/init.d/rcS) I acquire information from a file in the file system. If the expected file is not there, the script waits for it. During development the file is never there. Thus, I use Control-C to kill that script. Unfortunately, Control-C does not terminate the script. Why?

2) Control-C (SIGINT) creates zombie process

After removing the above mentioned startup script, initialization of system completes and a login prompt is presented to the user. System seems fine. However, any running program terminated by a Control-C hang indefinitely. Switching to another terminal (<ctrl>-<alt>-<f2>) and then executing the "ps" command yields a zombie process named the same a the killed process. Why?

Additional Information

The attached file contains my configuration files:

buildroot.config
busybox.config
uClibc.config

Please let me know if I can provide any further information.

Attached Files

configs.tar.gz [^] (5,889 bytes) 08-11-05 21:34

Relationships

Notes
(0001659) vda 09-29-06 16:58	Point (1) - correct behavior. User shouldn't be able to interrupt boot process just because he happens to have access to console's keyboard. Point (2) is not ok. Which init process do you use? Add print in the relevant place(s) for debugging that... /* Now run the looping stuff for the rest of forever */ while (1) { ... wpid = wait(NULL); ... }

(0004644) vda 02-14-08 04:37	I beileve "no reaping of children while sysinit actions are run" is fixed in current svn: static void waitfor(pid_t pid) { /* waitfor(run(x)): protect against failed fork inside run() / if (pid <= 0) return; / Wait for any child (prevent zombies from exiting orphaned processes) * but exit the loop only when specified one has exited. */ while (wait(NULL) != pid) continue; }

Issue History
Date Modified	Username	Field	Change
08-11-05 21:34	swth	New Issue
08-11-05 21:34	swth	Status	new => assigned
08-11-05 21:34	swth	Assigned To	=> BusyBox
08-11-05 21:34	swth	File Added: configs.tar.gz
09-29-06 16:58	vda	Note Added: 0001659
02-14-08 04:37	vda	Status	assigned => closed
02-14-08 04:37	vda	Note Added: 0004644
02-14-08 04:37	vda	Resolution	open => fixed