From owner-freebsd-current@freebsd.org Wed Sep 27 22:13:27 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A3E9EE10AD7 for ; Wed, 27 Sep 2017 22:13:27 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "troutmask", Issuer "troutmask" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 7C7333FF0 for ; Wed, 27 Sep 2017 22:13:27 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) by troutmask.apl.washington.edu (8.15.2/8.15.2) with ESMTPS id v8RMDLVx001129 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 27 Sep 2017 15:13:21 -0700 (PDT) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.15.2/8.15.2/Submit) id v8RMDL1o001128 for freebsd-current@freebsd.org; Wed, 27 Sep 2017 15:13:21 -0700 (PDT) (envelope-from sgk) Date: Wed, 27 Sep 2017 15:13:21 -0700 From: Steve Kargl To: freebsd-current@freebsd.org Subject: panic: softdep_deallocate_dependencies: dangling deps Message-ID: <20170927221321.GA1023@troutmask.apl.washington.edu> Reply-To: sgk@troutmask.apl.washington.edu MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.7.2 (2016-11-26) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 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: Wed, 27 Sep 2017 22:13:27 -0000 Just got this panic on FreeBSD troutmask.apl.washington.edu 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r321800: Mon Jul 31 13:48:43 PDT 2017 kargl@:/data/obj/usr/src/sys/SPEW amd64 core.txt.0 contains panic: softdep_deallocate_dependencies: dangling deps cpuid = 7 time = 1506549566 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe023a281710 vpanic() at vpanic+0x19c/frame 0xfffffe023a281790 panic() at panic+0x43/frame 0xfffffe023a2817f0 softdep_deallocate_dependencies() at softdep_deallocate_dependencies+0x76/frame 0xfffffe023a281810 brelse() at brelse+0x149/frame 0xfffffe023a281870 bufwrite() at bufwrite+0x65/frame 0xfffffe023a2818b0 softdep_process_journal() at softdep_process_journal+0x7a8/frame 0xfffffe023a281950 softdep_process_worklist() at softdep_process_worklist+0x80/frame 0xfffffe023a2819b0 softdep_flush() at softdep_flush+0xff/frame 0xfffffe023a2819f0 fork_exit() at fork_exit+0x75/frame 0xfffffe023a281a30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe023a281a30 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- __curthread () at ./machine/pcpu.h:232 232 __asm("movq %%gs:%1,%0" : "=r" (td) (kgdb) #0 __curthread () at ./machine/pcpu.h:232 #1 doadump (textdump=1) at /usr/src/sys/kern/kern_shutdown.c:318 #2 0xffffffff805879eb in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:386 #3 0xffffffff80587e66 in vpanic (fmt=, ap=0xfffffe023a2817d0) at /usr/src/sys/kern/kern_shutdown.c:779 #4 0xffffffff80587c83 in panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:710 #5 0xffffffff80787f56 in softdep_deallocate_dependencies ( bp=0xfffffe01f008d8b8) at /usr/src/sys/ufs/ffs/ffs_softdep.c:14304 #6 0xffffffff8061dd69 in buf_deallocate (bp=0xfffffe01f008d8b8) at /usr/src/sys/sys/buf.h:429 #7 brelse (bp=0xfffffe01f008d8b8) at /usr/src/sys/kern/vfs_bio.c:2348 #8 0xffffffff8061b9e5 in bufwrite (bp=0xfffffe01f008d8b8) at /usr/src/sys/kern/vfs_bio.c:1914 #9 0xffffffff8079bec8 in softdep_process_journal (mp=, needwk=0x0, flags=) at /usr/src/sys/ufs/ffs/ffs_softdep.c:3559 #10 0xffffffff80785dc0 in softdep_process_worklist (mp=0xfffff80007eef000, full=0) at /usr/src/sys/ufs/ffs/ffs_softdep.c:1592 #11 0xffffffff807894ff in softdep_flush (addr=0xfffff80007eef000) at /usr/src/sys/ufs/ffs/ffs_softdep.c:1397 #12 0xffffffff80555075 in fork_exit ( callout=0xffffffff80789400 , arg=0xfffff80007eef000, frame=0xfffffe023a281a40) at /usr/src/sys/kern/kern_fork.c:1038 #13 (kgdb) Hmmm, % kgdb /usr/lib/debug/boot/kernel/kernel.debug vmcore.0 GNU gdb (GDB) 8.0 [GDB v8.0 for FreeBSD] Copyright (C) 2017 Free Software Foundation, Inc. Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/lib/debug/boot/kernel/kernel.debug...done. ABI doesn't support a vmcore target OK, so debugging is broken :-/ -- Steve 20170425 https://www.youtube.com/watch?v=VWUpyCsUKR4 20161221 https://www.youtube.com/watch?v=IbCHE-hONow