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Date:      Tue, 23 Jan 1996 08:03:29 +1100
From:      Bruce Evans <bde@zeta.org.au>
To:        bugs@freebsd.org, fortinde@dmr.ca
Cc:        fortin@acm.org
Subject:   Re: 2.0.5 crashes daily: multiple frees is if_ppp.c -> more info
Message-ID:  <199601222103.IAA16928@godzilla.zeta.org.au>

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>panic: free: multiple frees
>#0  boot (arghowto=3D256) at ../../i386/i386/machdep.c:870
>870				dumppcb.pcb_ptd =3D rcr3();
>(kgdb) bt
>#0  boot (arghowto=3D256) at ../../i386/i386/machdep.c:870
>#1  0xf0112843 in panic (fmt=3D0xf010b9b2 "free: multiple frees")
>    at ../../kern/subr_prf.c:128
>#2  0xf010ba93 in free (addr=3D0xf1520180, type=3D1)
>    at ../../kern/kern_malloc.c:337
>#3  0xf013582e in pppstart (tp=3D0xf01c23e4) at ../../net/if_ppp.c:1028
>#4  0xf01a84fc in siopoll () at ../../i386/isa/sio.c:1569
>#5  0xf018e667 in doreti_swi ()
>#6  0xf019688c in cpu_switch ()

Try ORing SWI_NET_MASK into SW_TTY_MASK in <machine/spl.h>.  This is
in -stable but isn't in 2.1 .

Bruce



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