Date: Sun, 26 Jun 2005 10:49:39 +0200 From: Thierry Herbelot <thierry@herbelot.com> To: freebsd-current@freebsd.org Cc: Mike Silbersack <silby@silby.com>, current@freebsd.org Subject: Re: Mbuf double-free guilty party detection patch Message-ID: <200506261049.42303.thierry@herbelot.com> In-Reply-To: <20050626064309.GA4700@nagual.pp.ru> References: <20050624212729.C537@odysseus.silby.com> <20050626012002.H935@odysseus.silby.com> <20050626064309.GA4700@nagual.pp.ru>
next in thread | previous in thread | raw e-mail | index | archive | help
Le Sunday 26 June 2005 08:43, Andrey Chernov a écrit : > On Sun, Jun 26, 2005 at 01:20:47AM -0500, Mike Silbersack wrote: > > Yes and no. Your results tell me that it's probably not a simple use > > after free, but rather something smashing all over memory for some > > reason. > > It sounds nasty, but I observe no strange behaviour of TCP connections at > all for a long time. I have a lots of them actively running sshd, > sendmail, popper, ftpd, bind, httpd and cvsupd servers. still no good luck : after using the second patch, no panic, but the debug messages seem incomplete : (last freed by: /0/) This memory last freed by: 0 Memory modified after free 0xc15d5800(256) val=800 @ 0xc15d583c This memory last freed by: 0 Memory modified after free 0xc15d5800(256) val=0 @ 0xc15d5840 This memory last freed by: 0 Memory modified after free 0xc15d5800(256) val=3 @ 0xc15d5844 the test case is : building the kernel while tar-ing the src tree over two separate ssh session. TfH PS : what is puzzling is that I've got another machine running a more recent -current, with no ill effects (but it uses an ed(4) I/F)
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200506261049.42303.thierry>