Date: Sun, 10 Feb 2019 23:47:49 -0600 From: Karl Denninger <karl@denninger.net> To: freebsd-stable@freebsd.org Subject: Re: Oddball error from "batch" Message-ID: <762222d2-42bd-1a01-30c7-d6e52833bb14@denninger.net> In-Reply-To: <e51cb44a-d06c-e6cd-5fe1-ca7bc973ba16@denninger.net> References: <e51cb44a-d06c-e6cd-5fe1-ca7bc973ba16@denninger.net>
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This is a cryptographically signed message in MIME format. --------------ms040609070207010106010309 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 2/10/2019 16:01, Karl Denninger wrote: > Note -- working fine on 11.1 and 11.2, upgraded machine to 12.0-STABLE > and everything is ok that I'm aware of *except*..... > > # batch > who > df > ^D > > Job 170 will be executed using /bin/sh > > Then the time comes and... no output is emailed to me. > > In the cron log file I find: > > Feb 10 16:00:00 NewFS atrun[65142]: cannot open input file > E000aa018a24c3: No such file or directory > > Note that scheduled cron jobs are running as expected, and the > permissions on /var/at are correct (match exactly my 11. 1 and 11.2 > boxes), and in addition of looking BEFORE the job runs the named job > number IS THERE. > > [\u@NewFS /var/at/jobs]# ls -al > total 13 > drwxr-xr-x=C2=A0 2 daemon=C2=A0 wheel=C2=A0=C2=A0=C2=A0 5 Feb 10 15:55 = =2E > drwxr-xr-x=C2=A0 4 root=C2=A0=C2=A0=C2=A0 wheel=C2=A0=C2=A0=C2=A0 5 Oct= =C2=A0 8=C2=A0 2013 .. > -rw-r--r--=C2=A0 1 root=C2=A0=C2=A0=C2=A0 wheel=C2=A0=C2=A0=C2=A0 6 Feb= 10 15:55 .SEQ > -rw-------=C2=A0 1 root=C2=A0=C2=A0=C2=A0 wheel=C2=A0=C2=A0=C2=A0 0 Jul= =C2=A0 5=C2=A0 2008 .lockfile > -rwx------=C2=A0 1 root=C2=A0=C2=A0=C2=A0 wheel=C2=A0 615 Feb 10 15:55 = E000aa018a24c3 > > After the error.... the file isn't there.=C2=A0 It was removed (as one = would > expect when the job is complete.) > > What the blankety-blank?! Turns out it's a nasty race in the atrun code.... I have no idea why this hasn't bit the living daylights out of lots of people before, but it's sure biting me! https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235657 Includes a proposed fix... :) --=20 Karl Denninger karl@denninger.net <mailto:karl@denninger.net> /The Market Ticker/ /[S/MIME encrypted email preferred]/ --------------ms040609070207010106010309 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgMFADCABgkqhkiG9w0BBwEAAKCC DdgwggagMIIEiKADAgECAhMA5EiKghDOXrvfxYxjITXYDdhIMA0GCSqGSIb3DQEBCwUAMIGL MQswCQYDVQQGEwJVUzEQMA4GA1UECAwHRmxvcmlkYTESMBAGA1UEBwwJTmljZXZpbGxlMRkw FwYDVQQKDBBDdWRhIFN5c3RlbXMgTExDMRgwFgYDVQQLDA9DdWRhIFN5c3RlbXMgQ0ExITAf BgNVBAMMGEN1ZGEgU3lzdGVtcyBMTEMgMjAxNyBDQTAeFw0xNzA4MTcxNjQyMTdaFw0yNzA4 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