From owner-freebsd-current@freebsd.org Thu Oct 1 13:25:56 2015 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 0BEBEA0CE2A for ; Thu, 1 Oct 2015 13:25:56 +0000 (UTC) (envelope-from freebsd-listen@fabiankeil.de) Received: from smtprelay04.ispgateway.de (smtprelay04.ispgateway.de [80.67.31.31]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 943A21B4F for ; Thu, 1 Oct 2015 13:25:55 +0000 (UTC) (envelope-from freebsd-listen@fabiankeil.de) Received: from [78.35.158.162] (helo=fabiankeil.de) by smtprelay04.ispgateway.de with esmtpsa (TLSv1.2:AES128-GCM-SHA256:128) (Exim 4.84) (envelope-from ) id 1Zhdq1-0002uB-86 for freebsd-current@FreeBSD.org; Thu, 01 Oct 2015 15:23:57 +0200 Date: Thu, 1 Oct 2015 15:23:56 +0200 From: Fabian Keil To: freebsd-current@FreeBSD.org Subject: panic: getblk: size(131072) > MAXBCACHEBUF(65536) Message-ID: <5afc3b28.65902f68@fabiankeil.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/SjdW4NWbJgsaTY16uk+rExd"; protocol="application/pgp-signature" X-Df-Sender: Nzc1MDY3 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 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, 01 Oct 2015 13:25:56 -0000 --Sig_/SjdW4NWbJgsaTY16uk+rExd Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Shortly after upgrading to a kernel based on r288437 I got the following panic: Unread portion of the kernel message buffer: [5112] panic: getblk: size(131072) > MAXBCACHEBUF(65536) [...] (kgdb) where #0 doadump (textdump=3D0) at pcpu.h:221 #1 0xffffffff8030ca9e in db_dump (dummy=3D, dummy2=3D= false, dummy3=3D0, dummy4=3D0x0) at /usr/src/sys/ddb/db_command.c:533 #2 0xffffffff8030c651 in db_command (cmd_table=3D0x0) at /usr/src/sys/ddb/= db_command.c:440 #3 0xffffffff8030c2e4 in db_command_loop () at /usr/src/sys/ddb/db_command= .c:493 #4 0xffffffff8030ef0b in db_trap (type=3D, code=3D0) = at /usr/src/sys/ddb/db_main.c:251 #5 0xffffffff805d3cd4 in kdb_trap (type=3D3, code=3D0, tf=3D) at /usr/src/sys/kern/subr_kdb.c:654 #6 0xffffffff808651bf in trap (frame=3D0xfffffe009452b5f0) at /usr/src/sys= /amd64/amd64/trap.c:549 #7 0xffffffff80849e4a in calltrap () at /usr/src/sys/amd64/amd64/exception= .S:234 #8 0xffffffff805d33ae in kdb_enter (why=3D0xffffffff80953dc1 "panic", msg= =3D0xffffffff805d9e90 "U[...]") at cpufunc.h:63 #9 0xffffffff805902b9 in vpanic (fmt=3D, ap=3D) at /usr/src/sys/kern/kern_shutdown.c:746 #10 0xffffffff80590103 in panic (fmt=3D0x0) at /usr/src/sys/kern/kern_shutd= own.c:684 #11 0xffffffff806310e7 in getblk (vp=3D, blkno=3D, size=3D, slpflag=3D, slptimeo=3D, flags=3D) at /usr/src/sys/kern/vfs_bio.c:3324 #12 0xffffffff8063cf81 in vop_stdadvise (ap=3D) at /us= r/src/sys/kern/vfs_default.c:1099 #13 0xffffffff808ec827 in VOP_ADVISE_APV (vop=3D, a=3D= ) at vnode_if.c:3848 #14 0xffffffff80662844 in vn_read (fp=3D, uio=3D, active_cred=3D, flags=3D, td=3D0x8) at vnode_if.h:1648 #15 0xffffffff8065e27a in vn_io_fault (fp=3D0xfffff8000631eaf0, uio=3D0xfff= ffe009452baa0, active_cred=3D0xfffffe009452b5a0, flags=3D0, td=3D0x8) at /u= sr/src/sys/kern/vfs_vnops.c:1169 #16 0xffffffff805f0385 in dofileread (td=3D0xfffff800279fd9a0, fd=3D3, fp= =3D0xfffff8000631eaf0, auio=3D0xfffffe009452baa0, offset=3D, flags=3D50) at file.h:300 #17 0xffffffff805f00a8 in kern_readv (td=3D0xfffff800279fd9a0, fd=3D3, auio= =3D0xfffffe009452baa0) at /usr/src/sys/kern/sys_generic.c:273 #18 0xffffffff805f0033 in sys_read (td=3D0x0, uap=3D) = at /usr/src/sys/kern/sys_generic.c:186 #19 0xffffffff808661e8 in amd64_syscall (td=3D0xfffff800279fd9a0, traced=3D= 0) at subr_syscall.c:139 #20 0xffffffff8084a12b in Xfast_syscall () at /usr/src/sys/amd64/amd64/exce= ption.S:394 #21 0x00000008014d752a in ?? () Previous frame inner to this frame (corrupt stack?) Current language: auto; currently minimal The system was running for about 50 minutes before the panic occurred and didn't do anything special at the time (running Xorg, Firefox, ssh ...). I suspect r288431 and am currently compiling a kernel with the commit reverted. The previous kernel was based on r288265. Fabian --Sig_/SjdW4NWbJgsaTY16uk+rExd Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlYNM+cACgkQBYqIVf93VJ3XdACfWGhU7wS0LDP6aWSCkopNK0Eu KaAAoLKQJHpQyNW4zcv7KpzcQk+3qpbN =K99o -----END PGP SIGNATURE----- --Sig_/SjdW4NWbJgsaTY16uk+rExd--