Date: Sat, 25 Jun 2005 15:52:01 -0400 (EDT) From: "Mike Silbersack" <silby@silby.com> To: "Peter Holm" <peter@holm.cc> Cc: Mike Silbersack <silby@silby.com>, current@freebsd.org, Thierry Herbelot <thierry@herbelot.com> Subject: Re: Mbuf double-free guilty party detection patch Message-ID: <2565.64.215.82.94.1119729121.squirrel@webmail1.pair.com> In-Reply-To: <20050625173217.GA24306@peter.osted.lan> References: <20050624212729.C537@odysseus.silby.com> <20050625133052.GA23599@peter.osted.lan> <1437.64.215.82.94.1119717536.squirrel@webmail2.pair.com> <20050625173217.GA24306@peter.osted.lan>
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> On Sat, Jun 25, 2005 at 12:38:56PM -0400, Mike Silbersack wrote: >> > x.123e:This memory last freed by: 0xc2fa6c00 >> > x.123e-panic: Memory modified after free 0xc2fa6a00(256) val=c2fa6c00 > (kgdb) x/40x 0xc2fa6a00 > 0xc2fa6a00: 0xc2fa6c00 0x00000000 0xc24b1ae0 0x00000520 I'm going to have to doublecheck my patch when I get home - the address returned by "This memory last freed by" should be a pointer to a function address, not a piece of data. So that we get more results, why don't you change the panic in trash_ctor to a printf, then you can continue to run tests and see how many mbufs are being corrupted without the issue of having to reboot after a panic, etc. Mike "Silby" Silbersack
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