Date: Tue, 25 Sep 2001 19:22:25 -0400 (EDT) From: Evan Sarmiento <evms@cs.bu.edu> To: freebsd-hackers@freebsd.org, freebsd-current@freebsdorg.FreeBSD.ORG Subject: IMPORTANT!! Re: panic on mount Message-ID: <15281.4529.188277.263940@csa.bu.edu> In-Reply-To: <XFMail.010925135203.jhb@FreeBSD.org> References: <200109250019.RAA08335@windsor.research.att.com> <XFMail.010925135203.jhb@FreeBSD.org>
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Hello,
Just to clarify things for everyone who may be having this probme:
there is a panic on bootup with current, within the witness* code.
You can avoid this by commenting out WITNESS in your kernel configuration
and recompiling. It worked for me..
Hope this helps someone.
Thanks,
Evan
John Baldwin writes:
>
> On 25-Sep-01 Bill Fenner wrote:
> >
> > I also started getting this error with recent kernels (in the last
> > day or so).
>
> It looks like the mutex is really held since the mtx_assert before
> witness_unlock didn't trigger. You can try turning witness off for the time
> being as a workaround. I'm not sure why witness would be broken, however.
>
> > Mounting root from ufs:/dev/ad0s1a
> > panic: lock (sleep mutex) vnode interlock not locked @
> > /usr/src/sys/kern/vfs_default.c:460
> > Debugger("panic")
> > Stopped at Debugger+0x44: pushl %ebx
> > db> t
> > Debugger(c03c5bbb) at Debugger+0x44
> > panic(c03c8c40,c03c4b80,c03ccf20,c03cc8a0,1cc) at panic+0x70
> > witness_unlock(c7765f2c,8,c03cc8a0,1cc,c7765f2c,1,c03c4ba0,f6) at
> > witness_unlock+0x1d0
> > _mtx_unlock_flags(c7765f2c,0,c03cc8a0,1cc,c0567bd0) at _mtx_unlock_flags+0x59
> > vop_nolock(c0567be8,c0567bf8,c02920c2,c0567be8,c0567d4c) at vop_nolock+0x24
> > vop_defaultop(c0567be8) at vop_defaultop+0x15
> > vn_lock(c7765ec0,20002,c049f7c4,c0567d4c,c1346680) at vn_lock+0xca
> > ffs_mountfs(c7765ec0,c1351600,c049f7c4,c0446900,c0567d4c) at ffs_mountfs+0x7e
> > ffs_mount(c1351600,0,0,0,c049f7c4) at ffs_mount+0x67
> > vfs_mountroot_try(c05447a8,c03cc48c) at vfs_mountroot_try+0x14e
> > vfs_mountroot(0,564c00,564000,0,c012caac) at vfs_mountroot+0x5a
> > mi_startup() at mi_startup+0x90
> > begin() at begin+0x43
> >
> > I dunno how to get a dump from this point since kern.dumpdev hasn't been
> > set..
> >
> > Bill
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-current" in the body of the message
>
> --
>
> John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
> PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
> "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
>
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