[ovs-build] Errored: igsilya/ovs#482 (upstream_freebsd_11.3 - 5764076)

Travis CI builds at travis-ci.org
Tue Oct 1 16:59:41 UTC 2019


Build Update for igsilya/ovs
-------------------------------------

Build: #482
Status: Errored

Duration: 49 mins and 8 secs
Commit: 5764076 (upstream_freebsd_11.3)
Author: Ilya Maximets
Message: flow: Fix using pointer to member of packed struct icmp6_hdr.

OVS has no structure definition for ICMPv6 header with additional
data. More precisely, it has, but this structure named as
'icmp6_error_header' and only suitable to store error related
extended information.  'flow_compose_l4' stores additional
information in reserved bits by using system defined structure
'icmp6_hdr', which is marked as 'packed' and this leads to
build failure with gcc >= 9:

  lib/flow.c:3041:34: error:
    taking address of packed member of 'struct icmp6_hdr' may result
    in an unaligned pointer value [-Werror=address-of-packed-member]

        uint32_t *reserved = &icmp->icmp6_dataun.icmp6_un_data32[0];
                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix that by renaming 'icmp6_error_header' to 'icmp6_data_header'
and allowing it to store not only errors, but any type of additional
information by analogue with 'struct icmp6_hdr'.
All the usages of 'struct icmp6_hdr' replaced with this new structure.
Removed redundant conversions between network and host representations.
Now fields are always in be.

This also, probably, makes flow_compose_l4 more robust by avoiding
possible unaligned accesses to 32 bit value.

Fixes: 9b2b84973db7 ("Support for match & set ICMPv6 reserved and options type fields")
Signed-off-by: Ilya Maximets <i.maximets at ovn.org>

View the changeset: https://github.com/igsilya/ovs/compare/2cfea6b4fedb...57640765bede

View the full build log and details: https://travis-ci.org/igsilya/ovs/builds/592110439?utm_medium=notification&utm_source=email

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