>Number:         16284
>Category:       kern
>Synopsis:       running function in stoped gdb causes signal 93
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 10 06:09:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Love
>Release:        NetBSD 1.5ZC
>Organization:
	Stacken Computer Club
>Environment:
System: NetBSD nutcracker.stacken.kth.se 1.5ZC NetBSD 1.5ZC (NUTCRACKER) #8: Mon Apr 8 06:06:20 CEST 2002 lha@nutcracker.stacken.kth.se:/usr/src/sys/arch/i386/compile/NUTCRACKER i386
Architecture: i386
Machine: i386
>Description:

Running function in stoped gdb causes signal 93, example:

On a 1.5ZC/i386 host:

	: root@nutcracker ; uname -rm
	1.5ZC i386
	: root@nutcracker ; cp /afs/e.kth.se/home/staff/lha/src/hacks/bar.c /tmp
	: root@nutcracker ; gcc -o bar bar.c -g
	: root@nutcracker ; gdb -q bar
	(gdb) r
	Starting program: /tmp/bar 
	^C
	Program received signal SIGINT, Interrupt.
	0x4809e9ef in select () from /usr/lib/libc.so.12
	(gdb) c  
	Continuing.
	^C
	Program received signal SIGINT, Interrupt.
	0x4809e9ef in select () from /usr/lib/libc.so.12
	(gdb) p foo()
	hej
	$1 = void
	(gdb) c
	Continuing.
	bar: select: Unknown error: 93
	
	Program exited with code 01.

On a 1.5.3_ALPHA/i386 host:

	: root@leif ; uname -rm
	1.5.3_ALPHA i386
	: root@leif ; gcc -o bar bar.c -g
	: root@leif ; gdb -q bar
	(gdb) r
	Starting program: /tmp/bar 
	^C
	Program received signal SIGINT, Interrupt.
	0x48093c4b in select ()
	(gdb) c
	Continuing.
	^C
	Program received signal SIGINT, Interrupt.
	0x48093c4b in select ()
	(gdb) p foo()
	hej
	$1 = void
	(gdb) c
	Continuing.



>How-To-Repeat:

Use the following testprogram bar.c and do like above.

cat > bar.c <<EOF
#include <sys/types.h>
#include <sys/time.h>

#include <stdio.h>
#include <errno.h>
#include <err.h>
#include <unistd.h>

void
foo(void)
{
    write(1, "hej\n", 4);
}

int
main(int argc, char **argv)
{
    int ret;
    struct timeval tv, t = { 1, 0};

    while(1) {
        tv = t;
        ret = select(0, NULL, NULL, NULL, &tv);
        if (ret < 0 && errno != EAGAIN)
            err(1, "select");
    }
}
EOF


>Fix:

	Unknown at this moment.
>Release-Note:
>Audit-Trail:
>Unformatted: