On 9/3/24 11:37, Eelco Chaudron wrote:
> The odp_flow_format() function applies a wildcard mask when a
> mask for a given key was not present. However, in the context of
> installing flows in the datapath, the absence of a mask actually
> indicates that the key should be ignored, meaning it should not
> be masked at all.
> 
> To address this inconsistency, odp_flow_format() now includes an
> option to skip formatting keys that are missing a mask.
> 
> Signed-off-by: Eelco Chaudron <[email protected]>
> ---
>  lib/dpctl.c            |  4 ++--
>  lib/dpif-netdev.c      |  6 +++---
>  lib/dpif.c             |  4 ++--
>  lib/odp-util.c         | 31 ++++++++++++++++++-------------
>  lib/odp-util.h         |  2 +-
>  lib/tnl-ports.c        |  2 +-
>  ofproto/ofproto-dpif.c |  2 +-
>  tests/test-odp.c       |  6 ++++--
>  8 files changed, 32 insertions(+), 25 deletions(-)


Hi, Eelco.

I got a notification from oss-fuzz that this change broke the build
of the fuzzing target:
  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=71524

Step #3 - "compile-afl-address-x86_64": mv -f $depbase.Tpo $depbase.Po
Step #3 - "compile-afl-address-x86_64": tests/oss-fuzz/odp_target.c:84:72: 
error: too few arguments to function call, expected 8, have 7
Step #3 - "compile-afl-address-x86_64":    83 |         
odp_flow_format(odp_key.data, odp_key.size,
Step #3 - "compile-afl-address-x86_64":       |         ~~~~~~~~~~~~~~~
Step #3 - "compile-afl-address-x86_64":    84 |                         
odp_mask.data, odp_mask.size, NULL, &out, false);
Step #3 - "compile-afl-address-x86_64":       |                                 
                                       ^
Step #3 - "compile-afl-address-x86_64": ./lib/odp-util.h:171:6: note: 
'odp_flow_format' declared here
Step #3 - "compile-afl-address-x86_64":   171 | void odp_flow_format(const 
struct nlattr *key, size_t key_len,
Step #3 - "compile-afl-address-x86_64":       |      ^               
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step #3 - "compile-afl-address-x86_64":   172 |                      const 
struct nlattr *mask, size_t mask_len,
Step #3 - "compile-afl-address-x86_64":       |                      
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step #3 - "compile-afl-address-x86_64":   173 |                      const 
struct hmap *portno_names, struct ds *,
Step #3 - "compile-afl-address-x86_64":       |                      
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step #3 - "compile-afl-address-x86_64":   174 |                      bool 
verbose, bool skip_no_mask);
Step #3 - "compile-afl-address-x86_64":       |                      
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Step #3 - "compile-afl-address-x86_64": 1 error generated.
Step #3 - "compile-afl-address-x86_64": make: *** [Makefile:4718: 
tests/oss-fuzz/odp_target.o] Error 1
Step #3 - "compile-afl-address-x86_64": 
********************************************************************************
Step #3 - "compile-afl-address-x86_64": Failed to build.
Step #3 - "compile-afl-address-x86_64": To reproduce, run:
Step #3 - "compile-afl-address-x86_64": python infra/helper.py build_image 
openvswitch
Step #3 - "compile-afl-address-x86_64": python infra/helper.py build_fuzzers 
--sanitizer address --engine afl --architecture x86_64 openvswitch
Step #3 - "compile-afl-address-x86_64": 
********************************************************************************
Finished Step #3 - "compile-afl-address-x86_64"
ERROR
ERROR: build step 3 "gcr.io/cloud-builders/docker" failed: step exited with 
non-zero status: 1


Could you, please, send a fix?

Best regards, Ilya Maximets.
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