Date: Sun, 28 Dec 1997 04:22:17 +0100 (CET) From: Martin Kammerhofer <dada@sbox.tu-graz.ac.at> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: kern/5385: DEVFS and IDE broken in stable since 1997/11/13 18:22 Message-ID: <199712280322.EAA01960@localhost.tu-graz.ac.at> Resent-Message-ID: <199712280330.TAA12032@hub.freebsd.org>
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>Number: 5385
>Category: kern
>Synopsis: DEVFS and IDE broken in stable since 1997/11/13 18:22
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Dec 27 19:30:00 PST 1997
>Last-Modified:
>Originator: Martin Kammerhofer
>Organization:
Graz University of Technology
>Release: FreeBSD 2.2.5-STABLE i386
>Environment:
-STABLE (i.e. RELENG_2_2) after 1997/11/13 18:22
>Description:
After cvsupping (on 97/12/25) and making world and kernel the new
kernel panics very soon after device probing is finished. DDB gave me
a "fatal trap 12: page fault while in kernel mode" and trace showed
_dev_add_name
_devs_link
_set_ds_labeldevs_unaliased
_set_ds_labeldevs
_dsioctl
_wdioctl
_spec_ioctl
_vn_ioctl
_ioctl
_syscall
_Xsyscall
the offending process was disklabel, but commenting that out in
/etc/rc leads to a similar panic from process 0. DDB complains about
a bad dumpdev and cannot do a crashdump.
Here's my dmesgs:
FreeBSD 2.2.5-STABLE #0: Sun Dec 28 03:19:26 CET 1997
toot@localhost:/usr/src/sys/compile/LEND
CPU: i486DX (486-class CPU)
real memory = 50331648 (49152K bytes)
avail memory = 46587904 (45496K bytes)
DEVFS: ready for devices
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16450
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16450
lpt0 at 0x378-0x37f on isa
pca0 on motherboard
pca0: PC speaker audio driver
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <ST3491A-XR>, 32-bit, multi-block-16
wd0: 408MB (836070 sectors), 899 cyls, 15 heads, 62 S/T, 512 B/S
wdc0: unit 1 (wd1): <IBM-DAQA-32160>, 32-bit, multi-block-16
wd1: 2067MB (4233600 sectors), 4200 cyls, 16 heads, 63 S/T, 512 B/S
wdc1 at 0x170-0x177 irq 15 on isa
npx0 on motherboard
npx0: INT 16 interface
sb0 at 0x220 irq 7 drq 1 on isa
sb0: <SoundBlaster Pro 3.2>
opl0 at 0x388 on isa
opl0: <Yamaha OPL-3 FM>
DEVFS: ready to run
wdc1: unit 0 (atapi): <CDA66801I/F1.03000>, removable, iordy
wcd0: 1033Kb/sec, 240Kb cache, audio play, 255 volume levels, ejectable tray
wcd0: no disc inside, unlocked
>How-To-Repeat:
boot a recent -stable kernel with DEVFS (from an EIDE disk - probably
that matters)
>Fix:
By a little trial and error I found that reverting files
/src/sys/miscfs/devfs/devfs_tree.c to 1.32.2.2
/src/sys/miscfs/devfs/devfs_vfsops.c to 1.14.2.2
/src/sys/miscfs/devfs/devfs_vnops.c to 1.32.2.3
i.e. undoing julians commit from 1997/11/13 18:22 in /src/sys/miscfs/devfs:
MFC: bring in changes from -current including some formatting changes
so that I can keep them in sync easier.
solves the problem and makes devfs working again. Obviously this
commit broke something.
>Audit-Trail:
>Unformatted:
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