Date: Fri, 16 Apr 2010 11:44:37 +0300 From: Daniel Braniss <danny@cs.huji.ac.il> To: freebsd-stable@freebsd.org Cc: Kostik Belousov <kostikbel@gmail.com>, Vlad Galu <dudu@dudu.ro>, Rick Macklem <rmacklem@uoguelph.ca>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: Re: panic: vm_fault_copy_wired: page missing Message-ID: <E1O2hAD-00074r-V3@kabab.cs.huji.ac.il> In-Reply-To: <E1O2fyp-0006PE-PX@kabab.cs.huji.ac.il> References: <E1O2JP2-000FbF-No@kabab.cs.huji.ac.il> <w2oad79ad6b1004150201qc71151d6v397899533f93bfdd@mail.gmail.com> <E1O2MF4-000IQ3-Iw@kabab.cs.huji.ac.il> <20100415104711.GA84922@icarus.home.lan> <E1O2Msw-000InD-Ep@kabab.cs.huji.ac.il> <20100415111102.GA85532@icarus.home.lan> <E1O2NeF-000JHt-Kc@kabab.cs.huji.ac.il> <20100415122343.GD2415@deviant.kiev.zoral.com.ua> <E1O2fyp-0006PE-PX@kabab.cs.huji.ac.il>
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> > > > --QA3RSaXxDkY7tjDy > > Content-Type: text/plain; charset=us-ascii > > Content-Disposition: inline > > Content-Transfer-Encoding: quoted-printable > > > > On Thu, Apr 15, 2010 at 02:54:19PM +0300, Daniel Braniss wrote: > > >=20 > > > > Take NFS out of the picture if you can... > > > >=20 > > > I've been thinking along those lines, and Kostic is convinced > > > that the problem lies there, so I guess I'll give it a try, but > > > it's no realy a solution. > > > > Better solution is to remove mlock()/mlockall(). > > without binaries via NFS there is no panic. > > I can't remove mlock()/mlockall() since it's not my program, it's apache > et.all. > but, while my knowledge of dtrace is almost zero, I did the next best thing > and put a printf in mlock/mlockall and they are not being called by userland. > > so, it seems the problem is nfs related, calling in the heavy-weights, > hi rick! well, Kostic was right after all. It was am-utils that called mlockall(), I missed the message first time, commented out the call to mlockall, and the system is not panicking. so there is a problem with mlock and nfs, can this be fixed? is there a pr? anyways, thank you all! danny
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