From nobody Fri Jun 27 21:58:55 2025 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4bTTwK0bpyz60KKw for ; Fri, 27 Jun 2025 21:58:57 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4bTTwJ57hPz3fXX; Fri, 27 Jun 2025 21:58:56 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Authentication-Results: mx1.freebsd.org; none Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) by troutmask.apl.washington.edu (8.18.1/8.18.1) with ESMTP id 55RLwtEw002498; Fri, 27 Jun 2025 14:58:55 -0700 (PDT) (envelope-from sgk@troutmask.apl.washington.edu) DKIM-Filter: OpenDKIM Filter v2.10.3 troutmask.apl.washington.edu 55RLwtEw002498 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=troutmask.apl.washington.edu; s=troutmask; t=1751061535; bh=4gr/IsSSeGaFRbcCdS7eAYMsDcBuemcMMyDb4Jk1T1Y=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=diox2Ym+rID4fSvNOJ9k9Ytk4uYg4LkGmC19voLEREuUIVg0czFbYqAWhmTFVzXvC CG6lreHlwxezfLVkOnD9A4P4izkr0d3OI/rpKGfPYUtMMKBIY1UnhVkw5zPNqitXF6 6OtOBvlUESneSEzGamy6PKha+gI1JcXxXYEwwvE+sYVBMFouAqT/bt3HWMtnuJchHd IRjVE9LAr5lHgD/Bqw0l/Sga4421pRL89SnC0dTq8ROjmIU+9Opv2a8ZwlFo7MZG1c YIKMw32+AYyOLR7VwlJ4MEIvyJ6OtjX2znd+Fii/gOgVW4jbdmB5ovg/7ZrtOTpY5P pdPZMM0TIlymQ== Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.18.1/8.18.1/Submit) id 55RLwtfa002497; Fri, 27 Jun 2025 14:58:55 -0700 (PDT) (envelope-from sgk) Date: Fri, 27 Jun 2025 14:58:55 -0700 From: Steve Kargl To: Alexander Motin Cc: FreeBSD Current Subject: Re: Panic with "Unrecoverable machine check exception" Message-ID: Reply-To: sgk@troutmask.apl.washington.edu References: List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 4bTTwJ57hPz3fXX X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:73, ipnet:128.95.0.0/16, country:US] Thanks for the quick reply. You're probably correct about a hardware issue. This system is getting long in the tooth. Panic occurs if I run a few very intensive floating point computations. Console logs do not show anything unusual. I need to go investigate how to up BMC. -- steve On Fri, Jun 27, 2025 at 04:52:53PM -0400, Alexander Motin wrote: > Hi. > > It is likely a hardware failure, unless a false positive. Check last > console logs or better BMC logs for detail. > > On Fri, Jun 27, 2025, 16:26 Steve Kargl > wrote: > > > Never seen this type of panic. I can upload > > core.txt.4 and info.4 to freefall if someone > > wants more details. > > > > > > __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > > 57 __asm("movq %%gs:%c1,%0" : "=r" (td) > > (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57 > > td = > > #1 doadump (textdump=textdump@entry=1) > > at /usr/src/sys/kern/kern_shutdown.c:399 > > error = 0 > > coredump = > > #2 0xffffffff80676e30 in kern_reboot (howto=260) > > at /usr/src/sys/kern/kern_shutdown.c:519 > > once = 0 > > __pc = 0x0 > > #3 0xffffffff80677367 in vpanic ( > > fmt=0xffffffff80abdb94 "Unrecoverable machine check exception", > > ap=ap@entry=0xfffffe001c024ed0) at > > /usr/src/sys/kern/kern_shutdown.c:974 > > buf = "Unrecoverable machine check exception", '\000' > times> > > __pc = 0x0 > > __pc = 0x0 > > __pc = 0x0 > > other_cpus = {__bits = {251, 0 }} > > td = 0xfffff80004601000 > > bootopt = > > newpanic = > > #4 0xffffffff80677193 in panic (fmt=) > > at /usr/src/sys/kern/kern_shutdown.c:887 > > ap = {{gp_offset = 8, fp_offset = 48, > > overflow_arg_area = 0xfffffe001c024f00, > > reg_save_area = 0xfffffe001c024ea0}} > > #5 0xffffffff809d391b in mca_intr () at /usr/src/sys/x86/x86/mca.c:1540 > > recoverable = false > > mcg_status = > > count = > > lmcs = > > #6 > > No locals. > > #7 mi_switch (flags=flags@entry=262) at > > /usr/src/sys/kern/kern_synch.c:537 > > __pc = 0x0 > > __pc = 0x0 > > __pc = 0x0 > > __pc = 0x0 > > __pc = 0x0 > > td = 0xfffff80004601000 > > new_switchtime = > > runtime = > > #8 0xffffffff806aaca4 in sched_idletd (dummy=dummy@entry=0x0) > > at /usr/src/sys/kern/sched_4bsd.c:1688 > > __pc = 0x0 > > stat = > > #9 0xffffffff806324b2 in fork_exit ( > > callout=0xffffffff806aac50 , arg=0x0, > > frame=0xfffffe00d5407f40) at /usr/src/sys/kern/kern_fork.c:1153 > > __pc = 0x0 > > __pc = 0x0 > > td = 0xfffff80004601000 > > p = 0xfffffe00c3002040 > > dtd = > > #10 > > > > > > > > > > > > > > -- > > Steve > > > > -- > Alexander Motin -- Steve