Date: Sat, 12 Aug 1995 19:11:34 -0700 From: faried nawaz <fn@pain.csrv.uidaho.edu> To: current@freebsd.org Subject: procfs problems in -current? Message-ID: <199508130211.TAA00198@big-brother.csrv.uidaho.edu>
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hi,
on friday (yesterday) i sup'd -current and rebuilt the affected pieces.
i redid the lkm's and the kernel as well.
on reboot, the system would fsck the local ufs filesystems and hang.
i rebooted single-user, fsck'd them manually, mounted them, hit ^D
and got a panic:
(this is from what i wrote down...dumpon wasn't reached)
fault virtual address = 0x1014
fault code = supervisor read, page not present
instruction pointer = 0x8: 0xf0125948
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, OPL = 0
current process = 4 (update)
panic: page fault
nm /kernel | grep f01259 gives
f01259b0 T _mount
f0125930 T _vfs_msync
f01259b0 F vfs_syscalls.o
i looked through the cvs mail and couldn't see a vfs-related commit, but
i did see a procfs one...and i do use the procfs lkm. i commented procfs
out of my /etc/fstab, and rebooted. the system came up fine. i tried
mount -v -t procfs proc /proc
and got a panic:
fault virtual address = 0x1028
fault code = supervisor read, page not present
instruction pointer = 0x8: 0xf0124487
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, OPL = 0
current process = 161 (mount)
panic: page fault
it wasn't able to sync to disk, so no core dump.
nm /kernel |grep f01244 gives
f0124448 T _insmntque
f01244b4 T _vwakeup
i'm running w/o procfs right now. mount says
/dev/wd0a on / (local)
/dev/wd0s1e on /var (local)
/dev/wd0s1f on /usr (local)
fs on n
the last line is interesting...it should say `kernfs' (i modload that too).
i don't know why it's corrupt.
i redid the kernel with `options PROCFS', uncommented procfs in /etc/fstab
and rebooted. it worked long enough for me to log in and type `mount', but
hung after that. i rebooted again, and this time it didn't get past the
fsck's.
my /etc/fstab is
/dev/wd0a / ufs rw 1 1
/dev/wd0s1e /var ufs rw 1 1
/dev/wd0s1b none swap sw 0 0
/dev/wd0s1f /usr ufs rw 1 1
#proc /proc procfs rw 0 0
kern /kern kernfs rw 0 0
#pain:/var/mail /var/mail nfs rw,soft,intr,-r=1024,-w=1024,-P 0 0
i'm now going to reboot and use the older kernel (aug 6th or so).
ddb time for me?
faried.
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