Date: Thu, 7 Oct 2004 15:36:18 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Brian Fundakowski Feldman <green@FreeBSD.org> Cc: Kris Kennaway <kris@obsecurity.org> Subject: Re: "panic: fxp_start_body: attempted use of a free mbuf!" in RELENG_5 Message-ID: <20041007223618.GA22644@xor.obsecurity.org> In-Reply-To: <20041007204844.GE73261@green.homeunix.org> References: <20041007165719.GA4023@xor.obsecurity.org> <20041007204844.GE73261@green.homeunix.org>
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[-- Attachment #1 --] On Thu, Oct 07, 2004 at 04:48:44PM -0400, Brian Fundakowski Feldman wrote: > On Thu, Oct 07, 2004 at 09:57:19AM -0700, Kris Kennaway wrote: > > Top of RELENG_5 on an smp machine: > > > > panic: fxp_start_body: attempted use of a free mbuf! > > cpuid = 1 > > KDB: enter: panic > > [thread 100042] > > Stopped at kdb_enter+0x30: leave > > db> trace > > kdb_enter(c06de69a,1,c06d47c5,ebbd2b14,c34cd320) at kdb_enter+0x30 > > panic(c06d47c5,c06c1030,4,c0499300,c3539000) at panic+0x14e > > fxp_start_body(c3539000,0,c06d5639,4ca,c3539000) at fxp_start_body+0x462 > > fxp_start(c3539000,122,0,c3539000) at fxp_start+0x3f > > if_start(c3539000,0,c06e7822,179,ffff8002) at if_start+0x99 > > ether_output_frame(c3539000,c38b5300,6,c4106b00,ebbd2bc8) at ether_output_frame+0x218 > > ether_output(c3539000,c38b5300,c4106b00,c95ec210,c04fe48d) at ether_output+0x43e > > in_arpinput(c38b8700,122,c38b8700,c07656b8,c38b8700) at in_arpinput+0x686 > > arpintr(c38b8700,0,c06e7c88,e5,c07656b8) at arpintr+0x104 > > netisr_processqueue(c07656b8,c0738ac0,1,c06dda24,c3462940) at netisr_processqueue+0x8e > > swi_net(0,0,c06dc037,269,c0738ac0) at swi_net+0xe9 > > ithread_loop(c345d880,ebbd2d48,c06dbe2a,323,d552d9c9) at ithread_loop+0x172 > > fork_exit(c04f1210,c345d880,ebbd2d48) at fork_exit+0xc6 > > fork_trampoline() at fork_trampoline+0x8 > > --- trap 0x1, eip = 0, esp = 0xebbd2d7c, ebp = 0 --- > > Does this fix it? I don't yet know whether this problem is repeatable, so there's no point in testing the patch yet. If it keeps happening, I'll try your patch and see what it does so I can distinguish "fixed" from "null result". Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBZcTiWry0BWjoQKURArg+AKCK01DOR4XjejK+BCZctodSEvBLwgCgrfht dzasEKAM/x0CCFzRxgAsKZo= =cK7x -----END PGP SIGNATURE-----help
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