netfilter buglog - Oct 2013 - [Bug 869] New: Segmentation fault when listing table/set

https://bugzilla.netfilter.org/show_bug.cgi?id=869

           Summary: Segmentation fault when listing table/set
           Product: nftables
           Version: unspecified
          Platform: All
        OS/Version: Debian GNU/Linux
            Status: NEW
          Severity: major
          Priority: P5
         Component: nft
        AssignedTo: pablo at netfilter.org
        ReportedBy: ave_it_son1 at hotmail.com
   Estimated Hours: 0.0


nft list table filter was working ok until I added the following set command:

root at Deb1:/home/alex/nftables# nft add set filter ipv4_ad { type
ipv4_address\;}
root at Deb1:/home/alex/nftables#
root at Deb1:/home/alex/nftables#
root at Deb1:/home/alex/nftables# nft list table filter
Segmentation fault
root at Deb1:/home/alex/nftables# nft list table filter
Segmentation fault

As you can see I now get a Segfault. I get the same when attempting to list the
set.

root at Deb1:/home/alex/nftables# nft list set filter ipv4_ad
Segmentation fault

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--- Comment #1 from ave_it_son1 at hotmail.com 2013-10-25 16:21:56 CEST ---
Deleting the set has fixed it.

root at Deb1:/home/alex/nftables# nft delete set filter ipv4_ad
root at Deb1:/home/alex/nftables# nft list table filter
table ip filter {
        chain input {
                 type filter hook input priority 0;
        }

        chain forward {
                 type filter hook forward priority 0;
        }

        chain output {
                 type filter hook output priority 0;
        }
}

What does the 'filter' section of the command above refer to? The guide
says to
use 'global' but it does not allow me to enter this.

root at Deb1:/home/alex/nftables# nft add set global ipv4_ad { type
ipv4_address\;}
internal:0:0-0: Error: Could not add set: No such file or directory


As it took 'filter' as a replacement for 'global' I had assumed
they were
somehow linked to the table name.

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ave_it_son1 at hotmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|major                       |normal

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--- Comment #2 from ave_it_son1 at hotmail.com 2013-10-25 16:40:27 CEST ---
Created attachment 416
  --> https://bugzilla.netfilter.org/attachment.cgi?id=416
strace when running command

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Pablo Neira Ayuso <pablo at netfilter.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #3 from Pablo Neira Ayuso <pablo at netfilter.org> 2013-10-25
17:12:34 CEST ---
strace is not very useful, please better post a valgrind/gdb trace

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--- Comment #4 from Phil Oester <netfilter at linuxace.com> 2013-10-25
18:20:50 CEST ---
Created attachment 417
  --> https://bugzilla.netfilter.org/attachment.cgi?id=417
Proposed libnftables patch

The attached patch should fix this for you.

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Phil Oester <netfilter at linuxace.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |netfilter at linuxace.com

--- Comment #5 from Phil Oester <netfilter at linuxace.com> 2013-10-25
18:23:32 CEST ---
(In reply to comment #1)
> What does the 'filter' section of the command above refer to? The
guide says to
> use 'global' but it does not allow me to enter this.
>
> As it took 'filter' as a replacement for 'global' I had
assumed they were
> somehow linked to the table name.
Filter is the name of the table.  There is no table named "global"
unless you
create one (nft add table global).

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Phil Oester <netfilter at linuxace.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #6 from Phil Oester <netfilter at linuxace.com> 2013-10-25
18:27:16 CEST ---
Just looked at bug 868, and this is the same issue.  Closing this bug as dupe.

*** This bug has been marked as a duplicate of bug 868 ***

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--- Comment #7 from ave_it_son1 at hotmail.com 2013-11-05 18:50:00 CET ---
It works for me. Great work thanks guys!

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