From owner-freebsd-current@FreeBSD.ORG Mon Nov 4 16:43:09 2013 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 8A59EDD1 for ; Mon, 4 Nov 2013 16:43:09 +0000 (UTC) (envelope-from bdrewery@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 67E18226B for ; Mon, 4 Nov 2013 16:43:09 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id rA4Gh9OK025398 for ; Mon, 4 Nov 2013 16:43:09 GMT (envelope-from bdrewery@freefall.freebsd.org) Received: (from bdrewery@localhost) by freefall.freebsd.org (8.14.7/8.14.7/Submit) id rA4Gh9D2025396 for current@freebsd.org; Mon, 4 Nov 2013 16:43:09 GMT (envelope-from bdrewery) Received: (qmail 49473 invoked from network); 4 Nov 2013 10:43:06 -0600 Received: from unknown (HELO roundcube.xk42.net) (10.10.5.5) by sweb.xzibition.com with SMTP; 4 Nov 2013 10:43:06 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 04 Nov 2013 10:43:06 -0600 From: Bryan Drewery To: Konstantin Belousov Subject: Re: (r257598) panic: Assertion =?UTF-8?Q?tmp-=3Etm=5Fpages=5Fused?= =?UTF-8?Q?=20=3D=3D=20=30=20failed=20at=20/usr/src/sys/modules/tmpfs/=2E?= =?UTF-8?Q?=2E/=2E=2E/fs/tmpfs/tmpfs=5Fvfsops=2Ec=3A=33=31=36?= Organization: FreeBSD In-Reply-To: <20131104162731.GQ59496@kib.kiev.ua> References: <5277B0A5.5010506@FreeBSD.org> <20131104162731.GQ59496@kib.kiev.ua> Message-ID: X-Sender: bdrewery@FreeBSD.org User-Agent: Roundcube Webmail/0.9.3 Cc: current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 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: Mon, 04 Nov 2013 16:43:09 -0000 On 2013-11-04 10:27, Konstantin Belousov wrote: > On Mon, Nov 04, 2013 at 08:35:17AM -0600, Bryan Drewery wrote: >> 11.0-CURRENT #87 r257598 >> >> During a poudriere build. >> >> It creates a tmpfs, builds a port in a jail using that tmpfs and then >> removes the tmpfs and recreate the tmpfs before building the next >> port. >> >> > panic: Assertion tmp->tm_pages_used == 0 failed at /usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_vfsops.c:316 >> > cpuid = 9 >> > KDB: stack backtrace: >> > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe1247ee57a0 >> > kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe1247ee5850 >> > vpanic() at vpanic+0x126/frame 0xfffffe1247ee5890 >> > kassert_panic() at kassert_panic+0x136/frame 0xfffffe1247ee5900 >> > tmpfs_unmount() at tmpfs_unmount+0x163/frame 0xfffffe1247ee5930 >> > dounmount() at dounmount+0x41f/frame 0xfffffe1247ee59b0 >> > sys_unmount() at sys_unmount+0x356/frame 0xfffffe1247ee5ae0 >> > amd64_syscall() at amd64_syscall+0x265/frame 0xfffffe1247ee5bf0 >> > Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe1247ee5bf0 >> > --- syscall (22, FreeBSD ELF64, sys_unmount), rip = 0x8008a02fa, rsp = 0x7fffffffd198, rbp = 0x7fffffffd2b0 --- >> > Uptime: 44m40s >> >> > (kgdb) #0 doadump (textdump=1) at pcpu.h:219 >> > #1 0xffffffff808bcf87 in kern_reboot (howto=260) >> > at /usr/src/sys/kern/kern_shutdown.c:447 >> > #2 0xffffffff808bd495 in vpanic (fmt=, >> > ap=) at /usr/src/sys/kern/kern_shutdown.c:754 >> > #3 0xffffffff808bd326 in kassert_panic (fmt=) >> > at /usr/src/sys/kern/kern_shutdown.c:642 >> > #4 0xffffffff81e159d3 in tmpfs_unmount (mp=0xfffff810502cd660, >> > mntflags=) >> > at /usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_vfsops.c:316 >> > #5 0xffffffff8095e1af in dounmount (mp=0xfffff810502cd660, flags=134742016, >> > td=0xfffff8013d57a490) at /usr/src/sys/kern/vfs_mount.c:1324 >> > #6 0xffffffff8095dd66 in sys_unmount (td=0xfffff8013d57a490, >> > uap=0xfffffe1247ee5b80) at /usr/src/sys/kern/vfs_mount.c:1212 >> > #7 0xffffffff80cb7d75 in amd64_syscall (td=0xfffff8013d57a490, traced=0) >> > at subr_syscall.c:134 >> > #8 0xffffffff80c9c90b in Xfast_syscall () >> > at /usr/src/sys/amd64/amd64/exception.S:391 >> > #9 0x00000008008a02fa in ?? () > > Do you have core ? > I want to see the struct tmpfs_mount content for the tmpfs mount point > which caused the panic. Yes. Hopefully this is what you're asking for: (kgdb) frame #4 0xffffffff81e159d3 in tmpfs_unmount (mp=0xfffff810502cd660, mntflags=) at /usr/src/sys/modules/tmpfs/../../fs/tmpfs/tmpfs_vfsops.c:316 316 MPASS(tmp->tm_pages_used == 0); (kgdb) print *mp $2 = {mnt_mtx = {lock_object = {lo_name = 0xffffffff80f11f09 "struct mount mtx", lo_flags = 16973824, lo_data = 0, lo_witness = 0xfffffe00006d3b00}, mtx_lock = 4}, mnt_gen = 1, mnt_list = {tqe_next = 0xfffff8116be06660, tqe_prev = 0xfffff81050257688}, mnt_op = 0xffffffff81e1b940, mnt_vfc = 0xffffffff81e1ba60, mnt_vnodecovered = 0xfffff8104fb0c3b0, mnt_syncer = 0x0, mnt_ref = 1, mnt_nvnodelist = {tqh_first = 0x0, tqh_last = 0xfffff810502cd6c0}, mnt_nvnodelistsize = 0, mnt_activevnodelist = {tqh_first = 0x0, tqh_last = 0xfffff810502cd6d8}, mnt_activevnodelistsize = 0, mnt_writeopcount = 1, mnt_kern_flag = 16777225, mnt_flag = 4096, mnt_opt = 0xfffff80014424ae0, mnt_optnew = 0x0, mnt_maxsymlinklen = 0, mnt_stat = {f_version = 537068824, f_type = 135, f_flags = 4096, f_bsize = 4096, f_iosize = 4096, f_blocks = 17125058, f_bfree = 17049291, f_bavail = 17049291, f_files = 2147483647, f_ffree = 2147473906, f_syncwrites = 0, f_asyncwrites = 0, f_syncreads = 0, f_asyncreads = 0, f_spare = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, f_namemax = 255, f_owner = 0, f_fsid = { val = {-2029977679, 135}}, f_charspare = '\0' , f_fstypename = "tmpfs\000\000\000\000\000\000\000\000\000\000", f_mntfromname = "tmpfs", '\0' , f_mntonname = "/poudriere/data/build/exp-91amd64-default-xzibition/08/usr/local", '\0' }, mnt_cred = 0xfffff8001418e100, mnt_data = 0xfffff80fedf75700, mnt_time = 0, mnt_iosize_max = 65536, mnt_export = 0x0, mnt_label = 0x0, mnt_hashseed = 4132690418, mnt_lockref = 0, mnt_secondary_writes = 0, mnt_secondary_accwrites = 0, mnt_susp_owner = 0x0, mnt_gjprovider = 0x0, mnt_explock = {lock_object = {lo_name = 0xffffffff80f11f1a "explock", lo_flags = 108199936, lo_data = 0, lo_witness = 0xfffffe00006eb280}, lk_lock = 1, lk_exslpfail = 0, lk_timo = 0, lk_pri = 96}, mnt_upper_link = {tqe_next = 0x0, tqe_prev = 0x0}, mnt_uppers = {tqh_first = 0x0, tqh_last = 0xfffff810502cd980}} (kgdb) print *(struct tmpfs_mount *)(mp)->mnt_data $3 = {tm_pages_max = 18446744073709551615, tm_pages_used = 18446744073709551615, tm_root = 0xfffff8104ff44828, tm_nodes_max = 2147483647, tm_ino_unr = 0xfffff8002fd65080, tm_nodes_inuse = 0, tm_maxfilesize = 9223372036854775807, tm_nodes_used = {lh_first = 0x0}, allnode_lock = {lock_object = {lo_name = 0xffffffff81e1aa47 "tmpfs allnode lock", lo_flags = 16908288, lo_data = 0, lo_witness = 0xfffffe00006ecd80}, mtx_lock = 6}, tm_dirent_pool = 0xfffff810500bb000, tm_node_pool = 0xfffff81050046000, tm_ronly = 0} Looks like tm_pages_used is -1. -- Regards, Bryan Drewery