[Bug nscd/16453] New: nscd segfaults with a large number of members in a netgroup

["siddhesh at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=16453

            Bug ID: 16453
           Summary: nscd segfaults with a large number of members in a
                    netgroup
           Product: glibc
           Version: 2.18
            Status: NEW
          Severity: normal
          Priority: P2
         Component: nscd
          Assignee: siddhesh at redhat dot com
          Reporter: siddhesh at redhat dot com
                CC: drepper.fsp at gmail dot com

nscd crashes with a segfault when there are a large number of members in a
netgroup and the netgroup is defined in terms of another netgroup.

How Reproducible:

Always

Steps to Reproduce:

cat > /etc/netgroup
foo_000_01 \
        (foo-000-000.bar.com.au,,) \
        (foo-000-001.bar.com.au,,) \
        (foo-000-002.bar.com.au,,) \
        (foo-000-003.bar.com.au,,) \
        (foo-000-004.bar.com.au,,) \
        (foo-000-005.bar.com.au,,) \
        (foo-000-006.bar.com.au,,) \
        (foo-000-007.bar.com.au,,) \
        (foo-000-008.bar.com.au,,) \
        (foo-000-009.bar.com.au,,) \
        (foo-000-010.bar.com.au,,) \
        (foo-000-011.bar.com.au,,) \
        (foo-000-012.bar.com.au,,) \
        (foo-000-013.bar.com.au,,) \
        (foo-000-014.bar.com.au,,) \
        (foo-000-015.bar.com.au,,) \
        (foo-000-016.bar.com.au,,) \
        (foo-000-017.bar.com.au,,) \
        (foo-000-018.bar.com.au,,) \
        (foo-000-019.bar.com.au,,) \
        (foo-000-020.bar.com.au,,) \
        (foo-000-021.bar.com.au,,) \
        (foo-000-022.bar.com.au,,) \
        (foo-000-023.bar.com.au,,) \
        (foo-000-024.bar.com.au,,) \
        (foo-000-025.bar.com.au,,) \
        (foo-000-026.bar.com.au,,) \
        (foo-000-027.bar.com.au,,) \
        (foo-000-028.bar.com.au,,) \
        (foo-000-029.bar.com.au,,)
rhtest3 \
        foo_000_01 \
        (foo-000-030.bar.com.au,,) (foo-000-031.bar.com.au,,)
(foo-000-032.bar.com.au,,) (foo-000-033.bar.com.au,,)
(foo-000-034.bar.com.au,,) (foo-000-035.bar.com.au,,)
(foo-000-036.bar.com.au,,) (foo-000-037.bar.com.au,,)
(foo-000-038.bar.com.au,,) (foo-000-039.bar.com.au,,)
(foo-000-040.bar.com.au,,) (foo-000-041.bar.com.au,,)
(foo-000-042.bar.com.au,,)
^d

service nscd start
getent netgroup rhtest3

Actual Results:

nscd crashes with a segfault

Expected Result:

nscd does not crash.

Patch coming up.

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