linux-kernel - WARNING: modpost: "cmpxchg8b_emu" [fs/btrfs/btrfs.ko] has no CRC!

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Message-ID: <202501190030.Jlbk07o8-lkp@intel.com>
Date: Sun, 19 Jan 2025 00:09:20 +0800
From: kernel test robot <lkp@...el.com>
To: Filipe Manana <fdmanana@...e.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	David Sterba <dsterba@...e.com>, Josef Bacik <josef@...icpanda.com>
Subject: WARNING: modpost: "cmpxchg8b_emu" [fs/btrfs/btrfs.ko] has no CRC!

Hi Filipe,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   595523945be0a5a2f12a1c04772383293fbc04a1
commit: 1020443840569535f6025a855958f07ea3eebf71 btrfs: make the extent map shrinker run asynchronously as a work queue job
date:   10 weeks ago
config: um-randconfig-r054-20230701 (https://download.01.org/0day-ci/archive/20250119/202501190030.Jlbk07o8-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250119/202501190030.Jlbk07o8-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501190030.Jlbk07o8-lkp@intel.com/

All warnings (new ones prefixed by >>, old ones prefixed by <<):

WARNING: modpost: EXPORT symbol "cmpxchg8b_emu" [vmlinux] version generation failed, symbol will not be versioned.
Is "cmpxchg8b_emu" prototyped in <asm/asm-prototypes.h>?
WARNING: modpost: EXPORT symbol "csum_partial" [vmlinux] version generation failed, symbol will not be versioned.
Is "csum_partial" prototyped in <asm/asm-prototypes.h>?
WARNING: modpost: EXPORT symbol "csum_partial_copy_generic" [vmlinux] version generation failed, symbol will not be versioned.
Is "csum_partial_copy_generic" prototyped in <asm/asm-prototypes.h>?
WARNING: modpost: "csum_partial" [fs/nfsd/nfsd.ko] has no CRC!
>> WARNING: modpost: "cmpxchg8b_emu" [fs/btrfs/btrfs.ko] has no CRC!
WARNING: modpost: "cmpxchg8b_emu" [fs/ceph/ceph.ko] has no CRC!
WARNING: modpost: "cmpxchg8b_emu" [lib/test_lockup.ko] has no CRC!
WARNING: modpost: "csum_partial" [drivers/net/vxlan/vxlan.ko] has no CRC!
WARNING: modpost: "csum_partial" [drivers/net/geneve.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/sched/act_csum.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/sched/act_mpls.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/ipv4/fou.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/ipv6/ip6_tunnel.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/dsa/dsa_core.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/dsa/tag_dsa.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/dsa/tag_lan9303.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/dsa/tag_ocelot.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/wireless/cfg80211.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/sunrpc/sunrpc.ko] has no CRC!
WARNING: modpost: "cmpxchg8b_emu" [net/sunrpc/auth_gss/rpcsec_gss_krb5.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/mac80211/mac80211.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/batman-adv/batman-adv.ko] has no CRC!
WARNING: modpost: "csum_partial" [net/openvswitch/openvswitch.ko] has no CRC!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki