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Date:      Mon, 09 Oct 2023 17:54:13 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 274380] ctld -u segfaults if ctl.conf contains a chap section within a target
Message-ID:  <bug-274380-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D274380

            Bug ID: 274380
           Summary: ctld -u segfaults if ctl.conf contains a chap section
                    within a target
           Product: Base System
           Version: 15.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: asomers@FreeBSD.org

When using the UCL configuration format, ctld segfaults if the configuration
file contains per-target chap settings.  This crash is observed on both
15.0-CURRENT and 13.2-RELEASE.

Stack Trace
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

#0  uclparse_chap (auth_group=3D0x0, obj=3Dobj@entry=3D0x2212d1a37940)
    at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/uclparse.c:66
#1  0x0000014e7e066079 in uclparse_target (name=3D<optimized out>,=20
    top=3D0x2212d1a37240)
    at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/uclparse.c:762
#2  uclparse_toplevel (top=3D0x2212d1a371c0)
    at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/uclparse.c:376
#3  uclparse_conf (newconf=3Dnewconf@entry=3D0x2212d1a320a0,=20
    path=3Dpath@entry=3D0x14e7e050b3e "/etc/ctl.conf")
    at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/uclparse.c:1007
#4  0x0000014e7e05b359 in conf_new_from_file (
    path=3Dpath@entry=3D0x14e7e050b3e "/etc/ctl.conf", oldconf=3D<optimized=
 out>,=20
    ucl=3Dtrue) at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/ctld.=
c:2719
#5  0x0000014e7e05a9d8 in main (argc=3D<optimized out>, argv=3D0x1569e17057=
0)
    at /usr/home/somers/src/freebsd.org/src/usr.sbin/ctld/ctld.c:2804


Steps to Reproduce
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

Create a /etc/ctl.conf file like this:
auth-group {
        myag {
                auth-type =3D none
        }
}
portal-group {
        pg0 {
                discovery-auth-group myag
                listen 0.0.0.0
        }
}
lun {
         example_1 { path =3D "/tmp/luns/lun.1" }
 }
 target {
         "iqn.2012-06.com.example:target1" {
                portal-group { name =3D pg0 }
                lun =3D [ { number =3D 1, name =3D example_1 } ]
                chap =3D [=20
                    {
                        user =3D "user_1"
                        secret =3D "secret_1"
                    }
                ]
        }
 }

Then start ctld like this:
# ctld -ut
Segmentation fault (core dumped)

--=20
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