Date: Wed, 28 May 2003 01:31:50 -0300 (ADT) From: "Marc G.Fournier" <scrappy@hub.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/52745: Fatal trap 12: page fault while in kernel mode Message-ID: <20030528043150.5D4396B989C@hub.org> Resent-Message-ID: <200305280440.h4S4eB0V015296@freefall.freebsd.org>
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>Number: 52745 >Category: kern >Synopsis: Fatal trap 12: page fault while in kernel mode >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue May 27 21:40:10 PDT 2003 >Closed-Date: >Last-Modified: >Originator: Marc G. Fournier >Release: FreeBSD 4.8-STABLE i386 >Organization: Hub.Org Networking Services (http://www.hub.org) >Environment: System: FreeBSD hub.org 4.8-STABLE FreeBSD 4.8-STABLE #0: Fri May 9 20:57:33 ADT 2003 root@pluto.hub.org:/usr/obj/usr/src/sys/kernel i386 >Description: I'm suspecting that the following crash is the result of trying to start up an INN news server on a unionfs'd file system ... the server crashed twice, with a third averted by removing the startup file for INN ... I have two core dump's of the crash, both of which seem to show the same 'trace' ... Script started on Wed May 28 01:26:02 2003 pluto# gdb -k kernel.debug vmcore.0 GNU gdb 4.18 (FreeBSD) Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 2627 in elfstab_build_psymtabs Deprecated bfd_read called at /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c line 933 in fill_symbuf SMP 2 cpus IdlePTD at phsyical address 0x0033c000 initial pcb at physical address 0x002ade40 panicstr: page fault panic messages: --- Fatal trap 12: page fault while in kernel mode mp_lock = 00000002; cpuid = 0; lapic.id = 03000000 fault virtual address = 0x0 fault code = supervisor read, page not present instruction pointer = 0x8:0x8023c10a stack pointer = 0x10:0xb902ac04 frame pointer = 0x10:0xb902ac30 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 6 (syncer) interrupt mask = none <- SMP: XXX trap number = 12 panic: page fault mp_lock = 00000002; cpuid = 0; lapic.id = 03000000 boot() called on cpu#0 syncing disks... Fatal trap 12: page fault while in kernel mode mp_lock = 00000003; cpuid = 0; lapic.id = 03000000 fault virtual address = 0x0 fault code = supervisor read, page not present instruction pointer = 0x8:0x8023c10a stack pointer = 0x10:0xb902a794 frame pointer = 0x10:0xb902a7c0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 6 (syncer) interrupt mask = none <- SMP: XXX trap number = 12 panic: page fault mp_lock = 00000003; cpuid = 0; lapic.id = 03000000 boot() called on cpu#0 Uptime: 14h36m33s dumping to dev #da/0x20001, offset 8519808 dump 4031 4030 4029 4028 4027 4026 4025 4024 4023 4022 4021 4020 4019 4018 4017 4016 4015 4014 4013 4012 4011 4010 4009 4008 4007 4006 4005 4004 4003 4002 4001 4000 3999 3998 3997 3996 3995 3994 3993 3992 3991 3990 3989 3988 3987 3986 3985 3984 3983 3982 3981 3980 3979 3978 3977 3976 3975 3974 3973 3972 3971 3970 3969 3968 3967 3966 3965 3964 3963 3962 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202 201 200 199 198 197 196 195 194 193 192 191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 --- #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 487 if (dumping++) { (kgdb) where #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 #1 0x80150b97 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:316 #2 0x80151009 in panic (fmt=0x802726b9 "%s") at /usr/src/sys/kern/kern_shutdown.c:595 #3 0x8023d739 in trap_fatal (frame=0xb902a754, eva=0) at /usr/src/sys/i386/i386/trap.c:974 #4 0x8023d3a5 in trap_pfault (frame=0xb902a754, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:867 #5 0x8023cf03 in trap (frame={tf_fs = -1900019688, tf_es = -1989345264, tf_ds = -1989345264, tf_edi = -1531273216, tf_esi = 0, tf_ebp = -1191008320, tf_isp = -1191008384, tf_ebx = 4096, tf_edx = -1531273216, tf_ecx = 1024, tf_eax = -1531273216, tf_trapno = 12, tf_err = 0, tf_eip = -2145140470, tf_cs = 8, tf_eflags = 66054, tf_esp = -1191008080, tf_ss = -1191008108}) at /usr/src/sys/i386/i386/trap.c:466 #6 0x8023c10a in generic_bcopy () #7 0x801f3b51 in ffs_write (ap=0xb902a858) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:545 #8 0x8018f5ad in union_write (ap=0xb902a89c) at vnode_if.h:363 #9 0x8020ac38 in vnode_pager_generic_putpages (vp=0xc068ea80, m=0xb902a970, bytecount=4096, flags=12, rtvals=0xb902a940) at vnode_if.h:363 #10 0x8018f41e in union_putpages (ap=0xb902a904) at /usr/src/sys/miscfs/union/union_vnops.c:1041 #11 0x8020aa5a in vnode_pager_putpages (object=0xc1db6a80, m=0xb902a970, count=1, sync=12, rtvals=0xb902a940) at vnode_if.h:1147 #12 0x8020799f in vm_pageout_flush (mc=0xb902a970, count=1, flags=12) at /usr/src/sys/vm/vm_pager.h:147 #13 0x8020491f in vm_object_page_collect_flush (object=0xc1db6a80, p=0x81d7060c, curgeneration=4212, pagerflags=12) at /usr/src/sys/vm/vm_object.c:806 #14 0x802044fd in vm_object_page_clean (object=0xc1db6a80, start=0, end=0, flags=4) at /usr/src/sys/vm/vm_object.c:605 #15 0x80180c5c in vfs_msync (mp=0x8aaad400, flags=2) at /usr/src/sys/kern/vfs_subr.c:2722 #16 0x80181d88 in sync (p=0x802c2720, uap=0x0) at /usr/src/sys/kern/vfs_syscalls.c:576 #17 0x80150932 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:235 #18 0x80151009 in panic (fmt=0x802726b9 "%s") at /usr/src/sys/kern/kern_shutdown.c:595 #19 0x8023d739 in trap_fatal (frame=0xb902abc4, eva=0) at /usr/src/sys/i386/i386/trap.c:974 #20 0x8023d3a5 in trap_pfault (frame=0xb902abc4, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:867 #21 0x8023cf03 in trap (frame={tf_fs = -1894973416, tf_es = 16, tf_ds = 204996624, tf_edi = -1472946176, tf_esi = 0, tf_ebp = -1191007184, tf_isp = -1191007248, tf_ebx = 8192, tf_edx = -1472946176, tf_ecx = 2048, tf_eax = -1472946176, tf_trapno = 12, tf_err = 0, tf_eip = -2145140470, tf_cs = 8, tf_eflags = 66054, tf_esp = -1191006944, tf_ss = -1191006972}) at /usr/src/sys/i386/i386/trap.c:466 #22 0x8023c10a in generic_bcopy () #23 0x801f3b51 in ffs_write (ap=0xb902acc8) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:545 #24 0x8018f5ad in union_write (ap=0xb902ad0c) at vnode_if.h:363 #25 0x8020ac38 in vnode_pager_generic_putpages (vp=0xc1735800, m=0xb902ade4, bytecount=8192, flags=12, rtvals=0xb902adb0) at vnode_if.h:363 #26 0x8018f41e in union_putpages (ap=0xb902ad74) at /usr/src/sys/miscfs/union/union_vnops.c:1041 #27 0x8020aa5a in vnode_pager_putpages (object=0xc439f120, m=0xb902ade4, count=2, sync=12, rtvals=0xb902adb0) at vnode_if.h:1147 #28 0x8020799f in vm_pageout_flush (mc=0xb902ade4, count=2, flags=12) at /usr/src/sys/vm/vm_pager.h:147 #29 0x8020491f in vm_object_page_collect_flush (object=0xc439f120, p=0x81aa150c, curgeneration=1464, pagerflags=12) at /usr/src/sys/vm/vm_object.c:806 #30 0x802044fd in vm_object_page_clean (object=0xc439f120, start=0, end=0, flags=4) at /usr/src/sys/vm/vm_object.c:605 #31 0x80180c5c in vfs_msync (mp=0x8aaad400, flags=2) at /usr/src/sys/kern/vfs_subr.c:2722 #32 0x8018102a in sync_fsync (ap=0xb902af7c) at /usr/src/sys/kern/vfs_subr.c:2983 #33 0x8017f313 in sched_sync () at vnode_if.h:558 (kgdb) up 7 #7 0x801f3b51 in ffs_write (ap=0xb902a858) at /usr/src/sys/ufs/ufs/ufs_readwrite.c:545 545 error = (kgdb) list 540 541 size = BLKSIZE(fs, ip, lbn) - bp->b_resid; 542 if (size < xfersize) 543 xfersize = size; 544 545 error = 546 uiomove((char *)bp->b_data + blkoffset, (int)xfersize, uio); 547 if ((ioflag & (IO_VMIO|IO_DIRECT)) && 548 (LIST_FIRST(&bp->b_dep) == NULL)) { 549 bp->b_flags |= B_RELBUF; (kgdb) print *bp $1 = {b_hash = {le_next = 0xa259d6ec, le_prev = 0xa27fa230}, b_vnbufs = {tqe_next = 0xa27f53cc, tqe_prev = 0xc238e22c}, b_freelist = { tqe_next = 0xa2484940, tqe_prev = 0xa2601b38}, b_act = {tqe_next = 0xa25e11d0, tqe_prev = 0x89673000}, b_flags = 806354976, b_qindex = 0, b_xflags = 2 '\002', b_lock = {lk_interlock = {lock_data = 0}, lk_flags = 1024, lk_sharecount = 0, lk_waitcount = 0, lk_exclusivecount = 1, lk_prio = 20, lk_wmesg = 0x80259ab0 "bufwait", lk_timo = 0, lk_lockholder = 6}, b_error = 0, b_bufsize = 16384, b_runningbufspace = 0, b_bcount = 16384, b_resid = 0, b_dev = 0xffffffff, b_data = 0xa4baa000 "", b_kvabase = 0xa4baa000 "", b_kvasize = 16384, b_lblkno = 0, b_blkno = 42976672, b_offset = 0, b_iodone = 0, b_iodone_chain = 0x0, b_vp = 0xc238e200, b_dirtyoff = 0, b_dirtyend = 0, b_rcred = 0x0, b_wcred = 0x0, b_pblkno = 86290511, b_saveaddr = 0x0, b_driver1 = 0x0, b_driver2 = 0x0, b_caller1 = 0x0, b_caller2 = 0x0, b_pager = {pg_spc = 0x0, pg_reqpage = 0}, b_cluster = {cluster_head = {tqh_first = 0x0, tqh_last = 0xa2450048}, cluster_entry = {tqe_next = 0x0, tqe_prev = 0xa2450048}}, b_pages = {0x842d800c, 0x82f953c8, 0x82a9c984, 0x80f8c7c0, 0x0 <repeats 28 times>}, b_npages = 4, b_dep = {lh_first = 0x0}, b_chain = {parent = 0x0, count = 0}} (kgdb) quit pluto# exit exit Script done on Wed May 28 01:26:39 2003 >How-To-Repeat: Install and start up INN on a unionfs ... >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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