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[85.147.130.226]) by smtp.gmail.com with ESMTPSA id p7sm5535399wro.26.2020.06.11.08.21.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Jun 2020 08:21:32 -0700 (PDT) Subject: Re: Panic "vm_fault_lookup: fault on nofault entry" amd64 r362008 -> r362045 To: freebsd-current@freebsd.org References: <20200611130500.GW1392@albert.catwhisker.org> <20200611132129.GL48478@kib.kiev.ua> From: Johan Hendriks Cc: Konstantin Belousov Message-ID: <43dafecb-93a0-d009-146c-01c493df02f5@gmail.com> Date: Thu, 11 Jun 2020 17:21:32 +0200 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <20200611132129.GL48478@kib.kiev.ua> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: nl X-Rspamd-Queue-Id: 49jSHy46cXz3bxG X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=Yb2ufbsl; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of johhendriks@gmail.com designates 2a00:1450:4864:20::444 as permitted sender) smtp.mailfrom=johhendriks@gmail.com X-Spamd-Result: default: False [-4.35 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-1.31)[-1.314]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.03)[-1.028]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.005]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::444:from]; FREEMAIL_CC(0.00)[gmail.com]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Jun 2020 15:21:35 -0000 Op 11-06-2020 om 15:21 schreef Konstantin Belousov: > On Thu, Jun 11, 2020 at 06:05:00AM -0700, David Wolfskill wrote: >> Build machine (mini-tower) performed the update (r362008 -> r362045) >> without issue, but my laptop panicked quite early on -- before the dump >> device was configured. >> >> I have taken and placed a couple of screen shots in >> http://www.catwhisker.org/~david/FreeBSD/head/r362045/ >> >> Looking at the displayed backtrace, I see: >> >> --- trap 0xc ... >> futex_xchgl_reslover() >> elf_reloc_internal() >> link_elf_reloc_local() >> link_elf_link_preload_finish() >> linker_preload() >> mi_startup() >> >> Any clues? I'm hapy to poke at it or try patches. >> >> Booting from kernel.old (r362008) still works: >> FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #46 r362008M/362008: Wed Jun 10 04:19:33 PDT 2020 root@g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY amd64 1300097 1300097 > The link times out. > > There is not much to access in futex_xchgl_resolver() except for the > data segment. Without full panic message and disassemble of your instance > of futex_xchgl_resolver() it is not possible to ee what is going on. > > Just in case, can you try clean build, if you did -DNO_CLEAN ? Just a me too. I updated from 362042 to 362053 I get this panic very early. (hand typed so could contain some typo's) FreeBSD clang version 10.0.1 (git@github.com:llvm/llvm-project.git llvmorg-10.0.1-rc1-0-gf79cd71e145 VT(vgs): resolution 640x480 kernel trap 12 with interupts disabled panic: vm_fault_lookup: fault on nofault entry, addr: 0xffffffff83a3d000 cpuid = 0 time = 1 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff83a65830 vpanic() at vpanic+0x182/frame 0xffffffff83a65880 panic() ata panic+0x43/frame 0xffffffff83a658e00 vm_fault() at vm_fault+0x1ab5/frame 0xffffffff83a659f0 vm_fault_trap() at vam_fault_trap+0x6-/frame 0xffffffff83a65a30 trap_pfault at trap_pfault+0x19c/frame 0xffffffff83a65a80 trap() at trap+0x271/frame 0xffffffff8365b90 calltrap() at calltrap+0x8/frame 0xffffffff83a65b90 --- trap 0xc, rip = 0xffffffff83a3d470, rsp = 0xffffffff83a65c68, rbp = 0xffffffff83a65cb0 --- opensolaris_utsname_init() at opensolaris_utsname_init/frame 0xffffffff83a65cb0btext() at btext+0x2c KDB: enter : panic [ thread pid 0 tid 0 ] Stopped at         kdb_enter+0x37: movq       $0,0x1fc1686(%rip) db> > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"