Date: Wed, 15 Dec 2021 18:44:52 +0100 From: FreeBSD User <freebsd@walstatt-de.de> To: Daniel O'Connor via freebsd-current <freebsd-current@freebsd.org> Cc: darius@dons.net.au, FreeBSD CURRENT <freebsd-current@freebsd.org> Subject: Re: CURRENT: llvm13 seem to miscompile dns/bind916 (9.16.23) Message-ID: <20211215184452.3d6481cb@hermann> In-Reply-To: <A099E29A-0598-43C9-AAE2-55DCFB01440D@dons.net.au> References: <20211125092054.4696b6f2@hermann> <A099E29A-0598-43C9-AAE2-55DCFB01440D@dons.net.au>
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On Fri, 10 Dec 2021 19:41:07 +1030 Daniel O'Connor via freebsd-current <freebsd-current@freebsd.org> wrote: > > On 25 Nov 2021, at 18:50, FreeBSD User <freebsd@walstatt-de.de> wrote: > > > > Running CURRENT (FreeBSD 14.0-CURRENT #7 main-n250911-a11983366ea7: Mon Nov 22 > > 18:17:54 CET 2021 amd64) troubles me with our DNS server/service. > > Aproximately the same time we switched on CURRENT to the CURRENT LLVM13 version and > > also, after the compilation of a fresh OS with LLVM13, the upgrade from bind-9.16.22 > > to bind-9.16.23 took place as well as ASLR being the default. > > > > Since then named is crashing with a mysterious segmentation fault (see PR 259921, > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259921). > > > > Disabling ASLR as recommended to check whether ASLR triggers the SegFault did not > > solve the problem, so I suspect a miscompilation due to llvm13. > > > > On 13-STABLE bind-9.16.23 seem not to have this behaviour. > > > > I'm floating like a dead man in the water, can someone help? > > lang/sdcc also seg faults (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260303), > although there disabling ASLR via proccontrol does fix it. > > Can you show a stacktrace for your seg fault? Hello. I have to prepare the boxes for debugging first, we switched everything off including core dumping. In the meanwhile, bind-9.16.24_1 has been issued in ports - the same problem occurs with that version, too, when compiled with llvm13. Kind regards, O. Hartmann > -- > Daniel O'Connor > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum > >
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