Date: Wed, 29 Aug 2001 04:50:02 -0700 (PDT) From: Chris Pockele <chrisp@belgacom.net> To: freebsd-bugs@FreeBSD.org Subject: Re: misc/30168: 4-stable, crash when writing to msdos fs Message-ID: <200108291150.f7TBo2N93142@freefall.freebsd.org>
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The following reply was made to PR misc/30168; it has been noted by GNATS.
From: Chris Pockele <chrisp@belgacom.net>
To: Kris Kennaway <kris@obsecurity.org>
Cc: freebsd-gnats-submit@FreeBSD.org, chrisp@belgacom.net
Subject: Re: misc/30168: 4-stable, crash when writing to msdos fs
Date: Wed, 29 Aug 2001 13:43:33 +0200
> That's still not a traceback..please try and obtain that.
>
Here is the output of
gdb -k /sys/compile/DEBUG/kernel.debug /var/crash/vmcore.1
(kgdb) where
----
Script started on Wed Aug 29 13:34:24 2001
freedaemon# gdb -k /sys/compile/DEBUG/kernel.debug
/var/crash/vmESC[Kcore.1^M
GNU gdb 4.18
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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"...
IdlePTD 4874240
initial pcb at 3ee7e0
panicstr: page fault
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xe0f6effc
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01f8dd3
stack pointer = 0x10:0xc8565d14
frame pointer = 0x10:0xc8565d24
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 = 273 (cp)
interrupt mask = none
trap number = 12
panic: page fault
syncing disks... 46 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1: dev:#ad/0x60002, flags:00100020, blkno:8344, lblkno:8344
giving up on 1 buffers
Uptime: 37s
dumping to dev #ad/0x30001, offset 269872
dump ata0: resetting devices .. done
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 5
8 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 dumpsys () at ../../kern/kern_shutdown.c:473
473 if (dumping++) {
(kgdb) where
#0 dumpsys () at ../../kern/kern_shutdown.c:473
#1 0xc01bda74 in boot (howto=256) at ../../kern/kern_shutdown.c:313
#2 0xc01bde54 in poweroff_wait (junk=0xc03a07ea, howto=-1069939985)
at ../../kern/kern_shutdown.c:581
#3 0xc03339c3 in trap_fatal (frame=0xc8565cd4, eva=3774279676)
at ../../i386/i386/trap.c:956
#4 0xc033367d in trap_pfault (frame=0xc8565cd4, usermode=0,
eva=3774279676)
at ../../i386/i386/trap.c:849
#5 0xc03331e7 in trap (frame={tf_fs = -933887984, tf_es = -1071775728,
tf_ds = -933625840, tf_edi = 8344, tf_esi = -1057558528,
tf_ebp = -933864156, tf_isp = -933864192, tf_ebx = -1057562624,
tf_edx = 134217727, tf_ecx = 31, tf_eax = -2147483648, tf_trapno =
12,
tf_err = 0, tf_eip = -1071673901, tf_cs = 8, tf_eflags = 66182,
tf_esp = 268435455, tf_ss = 268435455}) at
../../i386/i386/trap.c:448
#6 0xc01f8dd3 in updatefats (pmp=0xc0f6e000, bp=0xc3703284, fatbn=8344)
at ../../msdosfs/msdosfs_fat.c:353
#7 0xc01f947e in fatchain (pmp=0xc0f6e000, start=1064363, count=0,
fillwith=4294967295) at ../../msdosfs/msdosfs_fat.c:674
#8 0xc01f959a in chainalloc (pmp=0xc0f6e000, start=1064363, count=1,
fillwith=4294967295, retcluster=0xc8565df0, got=0xc8565dec)
at ../../msdosfs/msdosfs_fat.c:748
#9 0xc01f979a in clusteralloc (pmp=0xc0f6e000, start=0, count=1,
fillwith=4294967295, retcluster=0xc8565df0, got=0xc8565dec)
at ../../msdosfs/msdosfs_fat.c:842
---Type <return> to continue, or q <return> to quit---
#10 0xc01f9c2a in extendfile (dep=0xc0f5c400, count=1, bpp=0x0, ncp=0x0,
flags=0) at ../../msdosfs/msdosfs_fat.c:1034
#11 0xc01fcf0e in msdosfs_write (ap=0xc8565e78)
at ../../msdosfs/msdosfs_vnops.c:725
#12 0xc01f28a2 in vn_write (fp=0xc0f69bc0, uio=0xc8565ee4,
cred=0xc0f64600,
flags=0, p=0xc7b665e0) at vnode_if.h:363
#13 0xc01cc93a in dofilewrite (p=0xc7b665e0, fp=0xc0f69bc0, fd=4,
buf=0x28058000, nbyte=187, offset=-1, flags=0) at
../../sys/file.h:162
#14 0xc01cc7eb in write (p=0xc7b665e0, uap=0xc8565f80)
at ../../kern/sys_generic.c:329
#15 0xc0333c39 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 671449088, tf_esi = 671449088, tf_ebp = -1077937572,
tf_isp = -933863468, tf_ebx = 187, tf_edx = 4, tf_ecx = 1, tf_eax
= 4,
tf_trapno = 12, tf_err = 2, tf_eip = 134561808, tf_cs = 31,
tf_eflags = 663, tf_esp = -1077937632, tf_ss = 47})
at ../../i386/i386/trap.c:1155
#16 0xc0324d75 in Xint0x80_syscall ()
#17 0x8048989 in ?? ()
#18 0x804851a in ?? ()
#19 0x8048135 in ?? ()
(kgdb) exit
Undefined command: "exit". Try "help".
(kgdb) quit
freedaemon# exit
Script done on Wed Aug 29 13:35:00 2001
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