Re: strace build error static assertion failed: "XFRM_MSG_MAPPING != 0x26"

[Dmitry V. Levin]

On Wed, Oct 06, 2021 at 09:43:11PM +0000, Chris Packham wrote:
> Hi,
> 
> When compiling strace-5.14 (although it looks like the same problem 
> would exist with bleeding edge strace) with headers from the tip of 
> Linus's tree (5.15.0-rc4) I get the following error
> 
> strace: In file included from static_assert.h:11,
> strace:                  from print_fields.h:12,
> strace:                  from defs.h:1901,
> strace:                  from netlink.c:10:
> strace: xlat/nl_xfrm_types.h:162:1: error: static assertion failed: 
> "XFRM_MSG_MAPPING != 0x26"
> strace:  static_assert((XFRM_MSG_MAPPING) == (0x26), "XFRM_MSG_MAPPING 
> != 0x26");
> strace:  ^~~~~~~~~~~~~
> 
> It looks like commit 2d151d39073a ("xfrm: Add possibility to set the 
> default to block if we have no policy") added some XFRM messages and the 
> numbers shifted. Is this considered an ABI breakage?
> 
> I'm not sure if this is a strace problem or a linux problem so I'm 
> reporting it in both places.

Yes, this is already covered by 
https://lore.kernel.org/lkml/20210912122234.GA22469@xxxxxxxxxxxxxxxxx/T/#u

Thanks,


-- 
ldv