Date: Wed, 6 Oct 1999 11:49:26 +0300 (EEST) From: Adrian Penisoara <ady@warpnet.ro> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: freebsd-current@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: [Patches avail?] Re: MMAP() in STABLE/CURRENT ... Message-ID: <Pine.BSF.4.10.9910061138390.550-100000@ady.warpnet.ro> In-Reply-To: <199910052100.OAA79706@apollo.backplane.com>
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hi again, On Tue, 5 Oct 1999, Matthew Dillon wrote: > : The problem is that the machine is completely locked, I can't get into > :the debugger with CTR-ALT-ESC; no panics so there are no coredumps > :catched. Any advise ? Could you escape in the debugger when you were hit > :by these bugs ? > > If it's completely locked up and ctl-alt-esc doesn't work (and normally > does work - try it on a working system to make sure that you've compiled > in the appropriate DDB options), and you aren't in an X display > (ctl-alt-esc isn't useful when done from an X display)... then your > lockup problem is unrelated to mmap. No X on the machine, but CTRL-ALT-ESC doesn't work. And another thing: I tried the MMAP "exploit"/test that has been floating around at that time on another 3.2-STABLE machine SMP with 2 Pentiums and it does lock the machine but you can switch consoles and escape to the debugger; on the production server (K6-2 300) everything goes dead when it happens (I haven't tried the MMAP test)... You're probably right, it's not the MMAP bug; but it's not faulty hardware -- I'll have an undeniable proof in a few days, I have downgraded to 3.1-STABLE as of 20th April... > > If you are running an X display on this box, you may be able to get > more information in regards to the crash if you turn off X. > > : > : I have: squid (20Mb), nntpcached (17Mb SIZE, 1Mb RES), apache, named, > :MFS, a few PPP processes and the rest of the standard menu. > > The only programs known to cause the swap problem are innd and innxmit, > both part of the inn news system. No such thing (yet); and I heard that innd-stable is OK (I have INND-stable running on that SMP box and had no problems with it) ?... > > : OK, how about some workarounds, I can't wait anylonger for this to be > :fixed, my situation got critical. Should I downgrade to 3.1-RELEASE (that > :hadn't exhibit this way) or can I dare a 4.0-CURRENT (are these problems > :present in -current too ?) ? > : > : Thanks, > : Ady (@warpnet.ro) > > If the machine is locking up to the point where you cannot even drop > into DDB, this bug is not related to the known mmap() bugs. > > At this point I have no idea what might be causing your lockup problem. Neither do I, dammit... :-( > > -Matt > Matthew Dillon > <dillon@backplane.com> > I'll get back to you in a few days. Thanks a lot, Ady (@warpnet.ro) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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