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Message-Id: <35482701-95A3-48B2-9A8E-B7E0092119B1@yahoo.com> Date: Wed, 28 Apr 2021 23:50:33 -0700 To: FreeBSD-STABLE Mailing List , freebsd-current X-Mailer: Apple Mail (2.3654.60.0.2.21) References: <35482701-95A3-48B2-9A8E-B7E0092119B1.ref@yahoo.com> X-Rspamd-Queue-Id: 4FW5jp5zsbz3vck X-Spamd-Bar: -- X-Spamd-Result: default: False [-2.50 / 15.00]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; RBL_DBL_DONT_QUERY_IPS(0.00)[98.137.65.206:from]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; SUBJECT_ENDS_QUESTION(1.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; SPAMHAUS_ZRD(0.00)[98.137.65.206:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.65.206:from]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.65.206:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-stable] X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Apr 2021 06:50:39 -0000 I did 2 test buildworld's based on: # ~/fbsd-based-on-what-freebsd.sh=20 branch: releng/13.0 merge-base: ea31abc261ffc01b6ff5671bffb15cf910a07f4b merge-base: CommitDate: 2021-04-09 00:14:30 +0000 ea31abc261ff (HEAD -> releng/13.0, tag: release/13.0.0, = freebsd/releng/13.0) 13.0: update to RELEASE n244733 (--first-parent --count for merge-base) and produced separate build trees. I also installed the world build into two separate directory trees: /usr/obj/DESTDIRs/13_0R-CA7-chroot/ vs. /usr/obj/DESTDIRs/13_0R-CA7-poud/ This was for other reasons. But eventually I happened to do a diff -rq of the two trees and ended up with the output showing some differing files: Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/sbin/ping and = /usr/obj/DESTDIRs/13_0R-CA7-poud/sbin/ping differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/sbin/ping6 and = /usr/obj/DESTDIRs/13_0R-CA7-poud/sbin/ping6 differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/bin/ntpq and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/bin/ntpq differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/lib/debug/sbin/ping.debug = and /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/lib/debug/sbin/ping.debug = differ Files = /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/lib/debug/usr/sbin/ntpd.debug and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/lib/debug/usr/sbin/ntpd.debug = differ Files = /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/lib/debug/usr/tests/sbin/ping/in_ck= sum_test.debug and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/lib/debug/usr/tests/sbin/ping/in_cksu= m_test.debug differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/sbin/ntp-keygen and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/sbin/ntp-keygen differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/sbin/ntpd and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/sbin/ntpd differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/sbin/ntpdate and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/sbin/ntpdate differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/sbin/ntpdc and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/sbin/ntpdc differ Files /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/sbin/sntp and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/sbin/sntp differ Files = /usr/obj/DESTDIRs/13_0R-CA7-chroot/usr/tests/sbin/ping/in_cksum_test and = /usr/obj/DESTDIRs/13_0R-CA7-poud/usr/tests/sbin/ping/in_cksum_test = differ (That is all.) For as much as I've looked at (not much), it looks to be variations in byte-padding values. The builds both were set up to tune for cortex-a7 explicitly. I patch top's source code. I patch the OOM kill code to report the specific reason for a kill. I still have some bcm2838 pci/xhci patching in place from an old investigation, but that would be kernel code. None of the patching is specific to the above list of files. The hosting context was: # uname -apKU FreeBSD CA72_4c8G_ZFS 13.0-RELEASE FreeBSD 13.0-RELEASE #1 = releng/13.0-n244733-ea31abc261ff-dirty: Wed Apr 28 05:45:27 PDT 2021 = root@CA72_4c8G_ZFS:/usr/obj/BUILDs/13_0R-CA72-nodbg-clang/usr/src/arm64.aa= rch64/sys/GENERIC-NODBG-CA72 arm64 aarch64 1300139 1300139 based on building the same source code (tuning for cortex-a72). It was the same media for all the activity. Unlike the past many years for me, the context is using ZFS instead of UFS, not that I think that makes a difference here. The differences do not mess up my activity but others might notice and care about such differences. =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)