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From: Stefan Ehmann <shoesoft@gmx.net>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
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Date: Sat, 06 Nov 2004 13:51:17 +0100
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cc: current@freebsd.org
Subject: Re: ext2fs related panic
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On Sat, 2004-11-06 at 13:29, Poul-Henning Kamp wrote:
> Can you try this patch ?

Thanks, now I can access the partition again without any panic.

But I just noticed a similar panic when unmounting the ext2fs:

Fatal trap 12: page fault while in kernel mode
current process = 66 (umount)

trace
g_wither_geom_close()
ext2_unmount()
do_unmount()
unmount()
syscall()
Xint0x80_syscall()

> In message <1099742312.809.9.camel@taxman>, Stefan Ehmann writes:
> >With kernel sources from yesterday I get a panic as soon as I do this:
> >
> >mount /mnt/stuff
> >ls /mnt/stuff
> >
> >The correspoding line in fstab is this (I haven't checked yet if it also
> >happens on rw mounted ext2fs)
> >/dev/ad1s1              /mnt/stuff      ext2fs  ro
> >
> >Unfortunately I had problems when debugging the core with kgdb (maybe
> >because it couldn't find symbols for the modules or because I had to
> >call doadump by hand).
> >
> >Anyway, here is a (shortened) transcript from ddb output.
> >
> >Fatal trap 12: page fault while in kernel mode
> >...
> >current process = 815 (ls)
> >
> >trace
> >ext2_strategy()
> >bufstrategy()
> >breadn()
> >bread()
> >ext2_read()
> >ext2_readdir()
> >getdirentries()
> >Xint0x80_syscall()
> >
> >I can provide more info if needed.
> >
> >Thanks
> >
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