netfilter buglog - Oct 2014 - [Bug 983] New: mnl_socket_recvfrom hangs in example code

https://bugzilla.netfilter.org/show_bug.cgi?id=983

            Bug ID: 983
           Summary: mnl_socket_recvfrom hangs in example code
           Product: nftables
           Version: unspecified
          Hardware: x86_64
                OS: Fedora
            Status: NEW
          Severity: normal
          Priority: P5
         Component: nft
          Assignee: pablo at netfilter.org
          Reporter: porjo38 at yahoo.com.au

Running examples/nft-rule-parse-add.c with the following JSON:

{"rule":{"family":"ip","table":"filter","chain":"input","expr":[{"type":"payload","dreg":1,"offset":9,"len":1,"base":"network"},{"type":"cmp","sreg":1,"op":"eq","data_reg":{"type":"value","len":1,"data0":"0x00000006"}},{"type":"payload","dreg":1,"offset":1,"len":2,"base":"transport"},{"type":"cmp","sreg":1,"op":"eq","data_reg":{"type":"value","len":2,"data0":"0x00001600"}}]}}

The program outputs the JSON to stdout then hangs. If I hit ctrl+c the program
ends. There is no error message.

 I've inserted printf statements into the program and can see that the hang
happens on the first call to mnl_socket_recvfrom().

I've tested using libmnl and libnftnl from git repo.

-- 
You are receiving this mail because:
You are watching all bug changes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.netfilter.org/pipermail/netfilter-buglog/attachments/20141026/80566f7d/attachment.html>

https://bugzilla.netfilter.org/show_bug.cgi?id=983

porjo38 at yahoo.com.au changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|nft                         |libmnl
            Product|nftables                    |libmnl

--- Comment #1 from porjo38 at yahoo.com.au ---
I've re-assinged this to product 'libmnl' as that seems a better
fit. Just to
clarify, the example I am running is: libnftnl/examples/nft-rule-parse-add.c

-- 
You are receiving this mail because:
You are watching all bug changes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.netfilter.org/pipermail/netfilter-buglog/attachments/20141026/1a088c3d/attachment.html>

https://bugzilla.netfilter.org/show_bug.cgi?id=983

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|libmnl                      |nft
            Product|libmnl                      |nftables

-- 
You are receiving this mail because:
You are watching all bug changes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.netfilter.org/pipermail/netfilter-buglog/attachments/20160630/36d2e13e/attachment.html>

https://bugzilla.netfilter.org/show_bug.cgi?id=983

Phil Sutter <phil at nwl.cc> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |phil at nwl.cc
         Resolution|---                         |WORKSFORME

--- Comment #2 from Phil Sutter <phil at nwl.cc> ---
After fixing the provided json snippet ('data_reg' has changed to
'data:{reg:...}', this works fine for me - so input is accepted by
nft-rule-parse-add program, returns immediately and 'nft list ruleset'
shows
the added rule.

I therefore assume this problem has been fixed already. If you still run into
problems with a recent version of libnftnl, please feel free to reopen.

-- 
You are receiving this mail because:
You are watching all bug changes.
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.netfilter.org/pipermail/netfilter-buglog/attachments/20170210/09c5e78c/attachment.html>