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[192.0.220.237]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4a72a4b148esm50218131cf.40.2025.06.16.06.46.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Jun 2025 06:46:00 -0700 (PDT) Date: Mon, 16 Jun 2025 09:45:58 -0400 From: Mark Johnston To: Warner Losh Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 7b7ba7857ce8 - main - Implement CLOCK_TAI Message-ID: References: <202506121825.55CIPemP006355@gitrepo.freebsd.org> List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202506121825.55CIPemP006355@gitrepo.freebsd.org> X-Spamd-Result: default: False [-1.88 / 15.00]; NEURAL_HAM_SHORT(-0.98)[-0.977]; NEURAL_HAM_MEDIUM(-0.84)[-0.844]; MID_RHS_NOT_FQDN(0.50)[]; NEURAL_HAM_LONG(-0.45)[-0.455]; FORGED_SENDER(0.30)[markj@freebsd.org,markjdb@gmail.com]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; MIME_GOOD(-0.10)[text/plain]; DMARC_POLICY_SOFTFAIL(0.10)[freebsd.org : SPF not aligned (relaxed), DKIM not aligned (relaxed),none]; RSPAMD_URIBL_FAIL(0.00)[syzkaller.appspot.com:server fail]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; ASN_FAIL(0.00)[4.3.7.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.b.8.f.7.0.6.2.asn6.rspamd.com:server fail]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; FROM_HAS_DN(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MLMMJ_DEST(0.00)[dev-commits-src-all@freebsd.org,dev-commits-src-main@freebsd.org]; RCVD_COUNT_TWO(0.00)[2]; FROM_NEQ_ENVFROM(0.00)[markj@freebsd.org,markjdb@gmail.com]; RCVD_TLS_LAST(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RSPAMD_EMAILBL_FAIL(0.00)[imp.freebsd.org:server fail,nwhitehorn.freebsd.org:server fail]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::734:from]; RCPT_COUNT_THREE(0.00)[4]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim] X-Rspamd-Queue-Id: 4bLWVf6xt5z4GQy X-Spamd-Bar: - On Thu, Jun 12, 2025 at 06:25:40PM +0000, Warner Losh wrote: > The branch main has been updated by imp: > > URL: https://cgit.FreeBSD.org/src/commit/?id=7b7ba7857ce8be0bf6ab905d936d8ba1363e4ec2 > > commit 7b7ba7857ce8be0bf6ab905d936d8ba1363e4ec2 > Author: Nathan Whitehorn > AuthorDate: 2025-06-12 17:52:30 +0000 > Commit: Warner Losh > CommitDate: 2025-06-12 18:25:31 +0000 > > Implement CLOCK_TAI > > Provide a clock through clock_gettime() that returns the current TAI > time (UTC without leap seconds) as a complement to CLOCK_REALTIME. This > provides compatibility with Linux, which also provides a CLOCK_TAI since > kernel 2.6.26, and this seems to be becoming the standard way to acquire > TAI time. Unlike Linux, this code will return EINVAL if the TAI offset > (set by ntpd, ptpd, etc.) is not known since it seems pathological for > CLOCK_TAI to silently give the wrong (UTC) time if the offset is not > known as it does on Linux. kern_clock_nanosleep() asserts that kern_clock_gettime() never returns an error, and this new case breaks that: https://syzkaller.appspot.com/bug?extid=e17e46b1f0b65027b005