Date: Tue, 25 Sep 2001 14:47:13 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: Bill Fenner <fenner@research.att.com> Cc: freebsd-current@FreeBSD.org, evms@cs.bu.edu, mark@grondar.za, peter@wemm.org Subject: Re: panic on mount Message-ID: <XFMail.010925135203.jhb@FreeBSD.org> In-Reply-To: <200109250019.RAA08335@windsor.research.att.com>
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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
>
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--
John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
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