Date: Mon, 09 Jun 2003 10:34:10 -0400 From: Donn Miller <dmmiller@cvzoom.net> To: Tim Robbins <tjr@FreeBSD.ORG> Cc: current@freebsd.org Subject: Re: panic: mdconfig on an iso file mounted on smbfs Message-ID: <3EE49AE2.6010701@cvzoom.net> In-Reply-To: <20030609203355.A51153@dilbert.robbins.dropbear.id.au> References: <3EE43394.6090802@cvzoom.net> <20030609203355.A51153@dilbert.robbins.dropbear.id.au>
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Tim Robbins wrote:
> On Mon, Jun 09, 2003 at 03:13:24AM -0400, Donn Miller wrote:
>
>
>>Please see the attached gdb file. I get this panic if I have a samba
>>filesystem mounted via mount_smbfs, where an iso file resides. When I
>>try to use mdconfig on the file, I get an immediate panic. The exact
>>mdconfig command issued is:
>>
>>mount -a -t vnode -f /smbfs/sol-9-u3-x86-v1.iso -u 0
>
>
> Try this patch and let me know whether it works. It seems to fix the problem
> for me, but it still panics if I try to reboot the machine without running
> mdconfig -d first.
>
> --- sys/netsmb/smb_iod.c.orig Mon Jun 9 20:36:56 2003
> +++ sys/netsmb/smb_iod.c Mon Jun 9 20:36:27 2003
> @@ -400,7 +400,8 @@
> int error;
>
> SMBIODEBUG("\n");
> - if (rqp->sr_cred->scr_td->td_proc == iod->iod_p) {
> + if (rqp->sr_cred->scr_td != NULL &&
> + rqp->sr_cred->scr_td->td_proc == iod->iod_p) {
> rqp->sr_flags |= SMBR_INTERNAL;
> SMB_IOD_RQLOCK(iod);
> TAILQ_INSERT_HEAD(&iod->iod_rqlist, rqp, sr_link);
>
>
Thanks, that worked. But I'm seeing the same thing as you. i.e., panic
if I reboot without running mdconfig -d first. Here is the backtrace of
the ensuing panic:
http://users.zoominternet.net/~dmmiller/freebsd/panic-2
(kgdb) where
#0 doadump () at ../../../kern/kern_shutdown.c:238
#1 0xc01ee2f7 in boot (howto=256) at ../../../kern/kern_shutdown.c:370
#2 0xc01ee68d in panic () at ../../../kern/kern_shutdown.c:543
#3 0xc034a652 in trap_fatal (frame=0xd1d2d764, eva=0) at
../../../i386/i386/trap.c:836
#4 0xc034a332 in trap_pfault (frame=0xd1d2d764, usermode=0, eva=4)
at ../../../i386/i386/trap.c:750
#5 0xc0349eb2 in trap (frame=
{tf_fs = -774766568, tf_es = 42926096, tf_ds = -774766576, tf_edi
= 1, tf_esi = -1028524484, tf_ebp = -774711356, tf_isp = -774711408,
tf_ebx = 0, tf_edx = 0, tf_ecx = 0, tf_eax = -1028923984, tf_trapno =
12, tf_err = 0, tf_eip = -1028688820, tf_cs = 8, tf_eflags = 66182,
tf_esp = 200, tf_ss = 4}) at ../../../i386/i386/trap.c:435
#6 0xc033a158 in calltrap () at {standard input}:96
#7 0xc2af7503 in smbfs_fullpath (mbp=0x1, vcp=0xc2b1f63c, dnp=0x0,
name=0x0, nmlen=0)
at /usr/src/sys/fs/smbfs/smbfs_subr.c:300
#8 0xc2af9df9 in smbfs_smb_trans2find2 (ctx=0x0) at
/usr/src/sys/fs/smbfs/smbfs_smb.c:1169
#9 0xc2afa1a2 in smbfs_findnextLM2 (ctx=0xc27f3000, limit=0)
at /usr/src/sys/fs/smbfs/smbfs_smb.c:1294
#10 0xc2afa74f in smbfs_findnext (ctx=0xc27f3000, limit=1, scred=0x0)
at /usr/src/sys/fs/smbfs/smbfs_smb.c:1442
#11 0xc2afa971 in smbfs_smb_lookup (dnp=0xc2837e80, name=0x0, nmlen=0,
fap=0xd1d2d8f0,
scred=0xd1d2d8e8) at /usr/src/sys/fs/smbfs/smbfs_smb.c:1498
#12 0xc2af537c in smbfs_getattr (ap=0x19550000) at
/usr/src/sys/fs/smbfs/smbfs_vnops.c:329
#13 0xc2af51de in smbfs_closel (ap=0xd1d2da60) at vnode_if.h:315
#14 0xc2af52b8 in smbfs_close (ap=0xc2837e80) at
/usr/src/sys/fs/smbfs/smbfs_vnops.c:296
#15 0xc0249029 in vclean (vp=0x19550000, flags=8, td=0xc2837e80) at
vnode_if.h:247
#16 0xc024967a in vgonel (vp=0xc2abd920, td=0x0) at
../../../kern/vfs_subr.c:2758
#17 0xc0248b6b in vflush (mp=0xc2ba3800, rootrefs=1, flags=2) at
../../../kern/vfs_subr.c:2464
#18 0xc2af2d61 in smbfs_unmount (mp=0xc2ba3800, mntflags=524288,
td=0xc2620be0)
at /usr/src/sys/fs/smbfs/smbfs_vfsops.c:248
#19 0xc0243084 in dounmount (mp=0xc2ba3800, flags=524288, td=0xc2620be0)
at ../../../kern/vfs_mount.c:1323
#20 0xc024a15e in vfs_unmountall () at ../../../kern/vfs_subr.c:3186
#21 0xc01ee1a7 in boot (howto=0) at ../../../kern/kern_shutdown.c:355
#22 0xc01eda13 in reboot (td=0x0, uap=0x0) at
../../../kern/kern_shutdown.c:176
#23 0xc034a97a in syscall (frame=
{tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 0, tf_esi = 0,
tf_ebp = -1077937228, tf_isp = -7---Type <return> to continue, or q
<return> to quit---
74709900, tf_ebx = 2, tf_edx = -1, tf_ecx = 3, tf_eax = 55, tf_trapno =
12, tf_err = 2, tf_eip = 134516031, tf_cs = 31, tf_eflags = 582, tf_esp
= -1077937300, tf_ss = 47})
at ../../../i386/i386/trap.c:1023
#24 0xc033a1ad in Xint0x80_syscall () at {standard input}:138
---Can't read userspace from dump, or kernel process---
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