kern/114155: sigsuspend gets interrupted by ptrace

Michiel Boland michiel at boland.org
Sat Jun 30 13:20:02 UTC 2007


>Number:         114155
>Category:       kern
>Synopsis:       sigsuspend gets interrupted by ptrace
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jun 30 13:20:01 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     Michiel Boland
>Release:        FreeBSD 7.0-CURRENT amd64
>Organization:
>Environment:
FreeBSD aja.boland.org 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Fri Jun 29 02:55:35 CEST 2007     root at aja.boland.org:/usr/obj/usr/src/sys/AJA  amd64
>Description:
The sigsuspend() system call gets interrupted when
another process attaches itself via ptrace.

>How-To-Repeat:
#include
<unistd.h>

int main(void)
{
        pause();
        return 0;
}
 
$ ./a.out &
$ truss -p `pgrep a.out`
process exit, rval = 0  
[1]   Done                    ./a.out
$

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted:


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