Date: Sun, 1 Dec 2002 08:20:11 -0800 (PST) From: Ian Dowse <iedowse@maths.tcd.ie> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/30160: Kernel panic when flash disk is removed and the flash disk is mounted. Message-ID: <200212011620.gB1GKBQf092335@freefall.freebsd.org>
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The following reply was made to PR kern/30160; it has been noted by GNATS.
From: Ian Dowse <iedowse@maths.tcd.ie>
To: freebsd-gnats-submit@freebsd.org
Cc:
Subject: Re: kern/30160: Kernel panic when flash disk is removed and the flash disk is mounted.
Date: Sun, 01 Dec 2002 16:11:00 +0000
Adding to the audit trail:
In message <3DEA2F2C.2010201@servicefactory.se>, =?ISO-8859-1?Q?Jonas_B=FClow?=
writes:
>Hi!
>
>Ian Dowse wrote:
>> Synopsis: Kernel panic when flash disk is removed and the flash disk is moun
>ted.
>>
>> State-Changed-From-To: open->feedback
>> State-Changed-By: iedowse
>> State-Changed-When: Sun Dec 1 04:23:56 PST 2002
>> State-Changed-Why:
>>
>> Do you have any details from the panic? I actually doubt that this
>> has been fixed, but it would be useful to get the panic message and
>> stack trace from a more recent release. You may find that using the
>> mtools package to access the device instead of mounting it is an
>> acceptable workaround.
>
>A triggered a kernel panic by:
>1. Insert flash disk
>2. Mount it as msdos fils system
>3. Access the all files from the mount point.
>4. Remove the flash disk
>5. Access the files from the mount point. Reading files not in cache
>will show "Device not configured"
>6. Insert flash disk again.
>7. Access files now gives a kernel panic
>
>Backtrace:
>
>Program received signal SIGSEGV, Segmentation fault.
>dscheck (bp=0xc4d02634, ssp=0x0) at ../../kern/subr_diskslice.c:159
>159 ../../kern/subr_diskslice.c: No such file or directory.
>(gdb) bt full
>#0 dscheck (bp=0xc4d02634, ssp=0x0) at ../../kern/subr_diskslice.c:159
> blkno = 19641
> endsecno = 18
> labelsect = -889455588
> lp = (struct disklabel *) 0xc4d02634
> msg = 0x8c <Address 0x8c out of bounds>
> nsec = 19641
> pp = (struct partition *) 0x8c
> secno = -992991692
> slicerel_secno = -992991692
> sp = (struct diskslice *) 0x8c
> s = 0
>#1 0xc01629d2 in diskstrategy (bp=0xc4d02634) at ../../kern/subr_disk.c:246
> bp = (struct buf *) 0xc4d02634
> dp = (struct disk *) 0xc0f26d58
>#2 0xc0192b39 in spec_strategy (ap=0xcafbfc64)
> at ../../miscfs/specfs/spec_vnops.c:479
> ap = (struct vop_strategy_args *) 0xcb157540
> bp = (struct buf *) 0xc4d02634
> vp = (struct vnode *) 0xcb157540
> mp = (struct mount *) 0x8c
>#3 0xc0192535 in spec_vnoperate (ap=0xcafbfc64)
> at ../../miscfs/specfs/spec_vnops.c:119
> ap = (struct vop_generic_args *) 0x0
>#4 0xc01d7225 in ufs_vnoperatespec (ap=0xcafbfc64)
> at ../../ufs/ufs/ufs_vnops.c:2440
> ap = (struct vop_generic_args *) 0x0
>#5 0xc017ec72 in bread (vp=0xcb157540, blkno=19641, size=4096, cred=0x0,
> bpp=0xcafbfce4) at vnode_if.h:944
> a = {a_desc = 0xc024fcc0, a_vp = 0xcb157540, a_bp = 0xc4d02634}
> vp = (struct vnode *) 0xcb157540
> bp = (struct buf *) 0xc4d02634
> blkno = 140
> size = 0
> cred = (struct ucred *) 0x0
> bpp = (struct buf **) 0xcafbfce4
> bp = (struct buf *) 0xc4d02634
>#6 0xc0196d51 in readep (pmp=0xc1118800, dirclust=2450, diroffset=0,
> bpp=0xcafbfce4, epp=0xcafbfce8) at ../../msdosfs/msdosfs_lookup.c:876
> pmp = (struct msdosfsmount *) 0xc1118800
> dirclust = 2450
> error = 4096
> bn = 0
> blsize = 4096
>#7 0xc01942a6 in deget (pmp=0xc1118800, dirclust=2450, diroffset=0,
> depp=0xcafbfd60) at ../../msdosfs/msdosfs_denode.c:329
> dirclust = 2450
> error = 1717986919
> dev = 0xc0f65480
> mntp = (struct mount *) 0x66666667
> direntptr = (struct direntry *) 0x0
> ldep = (struct denode *) 0xc10cf900
> nvp = (struct vnode *) 0xcb197f00
> bp = (struct buf *) 0xc4d02634
> p = (struct proc *) 0xc9e1b8e0
> tv = {tv_sec = 1, tv_usec = -889454924}
>#8 0xc019665d in msdosfs_lookup (ap=0xcafbfdc4)
> at ../../msdosfs/msdosfs_lookup.c:539
> ap = (struct vop_cachedlookup_args *) 0x8c
> vdp = (struct vnode *) 0xcb196340
> vpp = (struct vnode **) 0xcafbfea0
> cnp = (struct componentname *) 0xcafbfeb4
> bn = 65
> error = -981147296
> lockparent = 0
> wantparent = 0
> slotcount = 2450
> slotoffset = 0
> frcn = 0
> cluster = 2450
> blkoff = 0
> diroff = 352
> blsize = 4096
> isadir = 16
> scn = 2450
> pdp = (struct vnode *) 0xcb196340
> dp = (struct denode *) 0xc10cdf00
> tdp = (struct denode *) 0x0
> pmp = (struct msdosfsmount *) 0xc1118800
> bp = (struct buf *) 0x0
> dep = (struct direntry *) 0xc584e160
> dosfilename = "XVPICS "
> flags = 49284
> nameiop = 0
> p = (struct proc *) 0xc9e1b8e0
> unlen = 6
> wincnt = 1
> chksum = -1
> olddos = 1
>#9 0xc0182a96 in vfs_cache_lookup (ap=0xcafbfe10) at vnode_if.h:77
> rc = 140
> a = {a_desc = 0xc024f500, a_dvp = 0xcb196340, a_vpp = 0xcafbfea0,
> a_cnp = 0xcafbfeb4}
> dvp = (struct vnode *) 0xcb196340
> vpp = (struct vnode **) 0xcafbfea0
> cnp = (struct componentname *) 0xcafbfeb4
> ap = (struct vop_lookup_args *) 0x8c
> dvp = (struct vnode *) 0xcb196340
> vp = (struct vnode *) 0xc024fc00
> lockparent = 0
> error = 0
> vpp = (struct vnode **) 0xcafbfea0
> cnp = (struct componentname *) 0xcafbfeb4
> cred = (struct ucred *) 0x0
> flags = 49284
> p = (struct proc *) 0xc9e1b8e0
> vpid = 3222859177
>#10 0xc0185a75 in lookup (ndp=0xcafbfe8c) at vnode_if.h:52
> a = {a_desc = 0xc024f4c0, a_dvp = 0xcb196340, a_vpp = 0xcafbfea0,
> a_cnp = 0xcafbfeb4}
> dvp = (struct vnode *) 0xcb196340
> cnp = (struct componentname *) 0xcafbfeb4
> cp = 0xcb046c06 ""
> dp = (struct vnode *) 0xcb196340
> tdp = (struct vnode *) 0x0
> mp = (struct mount *) 0xcb046c06
> docache = 32
> wantparent = 0
> rdonly = 0
> trailing_slash = 0
> error = 0
> dpunlocked = 0
> cnp = (struct componentname *) 0xcafbfeb4
> p = (struct proc *) 0xc9e1b8e0
>#11 0xc0185560 in namei (ndp=0xcafbfe8c) at ../../kern/vfs_lookup.c:153
> fdp = (struct filedesc *) 0xc118b100
> cp = 0xc118b100 "0?\030?\200?\030?@c\031?"
> dp = (struct vnode *) 0xcb196340
> aiov = {iov_base = 0x0, iov_len = 0}
> auio = {uio_iov = 0x0, uio_iovcnt = 0, uio_offset = 0, uio_resid = 0,
> uio_segflg = UIO_USERSPACE, uio_rw = UIO_READ, uio_procp = 0x0}
> error = -887528640
> linklen = -887528640
> cnp = (struct componentname *) 0xcafbfeb4
> p = (struct proc *) 0xc9e1b8e0
>#12 0xc018b3d1 in lstat (p=0xc9e1b8e0, uap=0xcafbff80)
> at ../../kern/vfs_syscalls.c:1823
> p = (struct proc *) 0xc9e1b8e0
> error = 2
> vp = (struct vnode *) 0xc9e1b8e0
> sb = {st_dev = 3387013344, st_ino = 4, st_mode = 65408,
> st_nlink = 51963, st_uid = 0, st_gid = 3407438656, st_rdev = 0,
> st_atimespec = {tv_sec = 134971624, tv_nsec = 3864}, st_mtimespec = {
> tv_sec = -1054066688, tv_nsec = -1071317952}, st_ctimespec = {
> tv_sec = -887528640, tv_nsec = 0}, st_size = -3820179583120852768,
> st_blocks = 0, st_blksize = 3405512428, st_flags = 1, st_gen = 384,
> st_lspare = 0, st_qspare = {3864, 11995447168}}
> nd = {ni_dirp = 0x80b2740 "xvpics", ni_segflg = UIO_USERSPACE,
> ni_startdir = 0x0, ni_rootdir = 0xcaba4e00, ni_topdir = 0x0, ni_vp =
>0x0,
> ni_dvp = 0xcb196340, ni_pathlen = 1, ni_next = 0xcb046c06 "",
> ni_loopcnt = 0, ni_cnd = {cn_nameiop = 0, cn_flags = 49284,
> cn_proc = 0xc9e1b8e0, cn_cred = 0xc104ef80,
> cn_pnbuf = 0xcb046c00 "xvpics", cn_nameptr = 0xcb046c00 "xvpics",
> cn_namelen = 6, cn_consume = 0}}
>#13 0xc02112a5 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
> tf_edi = 134971608, tf_esi = 1, tf_ebp = -1077939476,
> tf_isp = -889454636, tf_ebx = 134948608, tf_edx = 0, tf_ecx =
>134948608,
> tf_eax = 190, tf_trapno = 12, tf_err = 2, tf_eip = 134594784,
> tf_cs = 31, tf_eflags = 647, tf_esp = -1077939632, tf_ss = 47})
> at ../../i386/i386/trap.c:1175
> params = 0xbfbff254 "@'\013\b\210???\214???\025\211\b\b\200"
> i = 140
> callp = (struct sysent *) 0xc0253090
> p = (struct proc *) 0xc9e1b8e0
> orig_tf_eflags = 647
> sticks = 0
> error = 0
> narg = 2
> args = {134948672, -1077939576, 4096, 134930772, 0, 0, 0, 0}
> code = 190
>#14 0xc0202065 in Xint0x80_syscall ()
>No symbol table info available.
>#15 0x805b897 in ?? ()
>No symbol table info available.
>#16 0x805b361 in ?? ()
>No symbol table info available.
>#17 0x8048d47 in ?? ()
>No symbol table info available.
>#18 0x8048b6b in ?? ()
>No symbol table info available.
>#19 0x8048180 in ?? ()
>No symbol table info available.
>
>Regards,
> Jonas
>
>
>>
>> http://www.freebsd.org/cgi/query-pr.cgi?pr=30160
>
>
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