From owner-freebsd-stable  Thu Nov 22 15:11:45 2001
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	Fri, 23 Nov 2001 01:12:36 +0200 (IST)
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To: Ian Dowse <iedowse@maths.tcd.ie>
Subject: Re: kern/32184: Kernel crashes in ufs code
Message-ID: <1006470756.3bfd8664accf9@webmail.harmonic.co.il>
Date: Fri, 23 Nov 2001 01:12:36 +0200 (IST)
From: Roman Shterenzon <roman@harmonic.co.il>
Cc: Roman Shterenzon <roman@harmonic.co.il>,
	freebsd-stable@freebsd.org
References: <200111221358.aa08693@salmon.maths.tcd.ie>
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Quoting Ian Dowse <iedowse@maths.tcd.ie>:

> In message <200111221112.fAMBCs300652@alchemy.oven.org>, Roman
> Shterenzon write
> s:
> >
> >>Synopsis:       Kernel crashes in ufs code
> 
> The first trap occurs at frame #18 in xl_newbuf(). This is the
> frame of interest. The UFS trap is probably caused by the kernel
> attempting to sync the disks before rebooting at an inappropriate
> time.
> 
> The line in question is
> 
> 	MCLGET(m_new, M_DONTWAIT);
> 
> so some sort of mbuf cluster free-list corruption has probably
> occurred. Tracking down such problems is not particularly easy...
> 
> Ian
> 
> >#17 0xc0274e2f in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16, 
> >      tf_edi = -1062710272, tf_esi = 6685184, tf_ebp = -1070806476, 
> >      tf_isp = -1070806508, tf_ebx = -1062710272, tf_edx = -1063047168,
> 
> >      tf_ecx = -264341449, tf_eax = 389973, tf_trapno = 12, tf_err = 0,
> 
> >      tf_eip = -1071728840, tf_cs = 8, tf_eflags = 66050, 
> >      tf_esp = -1062819840, tf_ss = -1059785052}) at
> ../../i386/i386/trap.c:44
> >8
> >#18 0xc01eb738 in xl_newbuf (sc=0xc0d4f000, c=0xc0d4f6a4)
> >    at ../../pci/if_xl.c:1724
> >#19 0xc01eb90a in xl_rxeof (sc=0xc0d4f000) at ../../pci/if_xl.c:1825
> >#20 0xc01ec048 in xl_intr (arg=0xc0d4f000) at ../../pci/if_xl.c:2060
> >#21 0xc027d917 in intr_mux (arg=0xc0a34800)
> >    at ../../i386/isa/intr_machdep.c:582
> 

You're right. I wasn't paying attention. Sorry.
Is there any other information I can provide?

--Roman Shterenzon

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