Date: Mon, 3 Apr 2006 15:59:11 +1200 From: Andrew Thompson <thompsa@freebsd.org> To: "Marc G. Fournier" <scrappy@postgresql.org> Cc: Tom Lane <tgl@sss.pgh.pa.us>, pgsql-hackers@postgresql.org, freebsd-stable@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: [HACKERS] semaphore usage "port based"? Message-ID: <20060403035911.GA76193@heff.fud.org.nz> In-Reply-To: <20060403034101.GA58429@xor.obsecurity.org> References: <20060402231232.C947@ganymede.hub.org> <27148.1144030940@sss.pgh.pa.us> <20060402232832.M947@ganymede.hub.org> <20060402234459.Y947@ganymede.hub.org> <27417.1144033691@sss.pgh.pa.us> <20060403031157.GA57914@xor.obsecurity.org> <27515.1144034269@sss.pgh.pa.us> <20060403032130.GA58053@xor.obsecurity.org> <20060403002830.W947@ganymede.hub.org> <20060403034101.GA58429@xor.obsecurity.org>
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On Sun, Apr 02, 2006 at 11:41:01PM -0400, Kris Kennaway wrote: > On Mon, Apr 03, 2006 at 12:30:58AM -0300, Marc G. Fournier wrote: > > 'k, but how do I fix kill so that it has the proper behaviour if SysV is > > enabled? > > Check the source, perhaps there's already a way. If not, talk to > whoever made the change. > > > Maybe a mount option for procfs that allows for pre-5.x > > behaviour? > > procfs has nothing to do with this though. > > > I'm not the first one to point out that this is a problem, just > > the first to follow it through to the cause ;( And I believe there is > > more then just PostgreSQL that is affected by shared memory (ie. apache2 > > needs SysV IPC enabled, so anyone doing that in a jail has it enabled > > also) ... > > Also note that SysV IPC is not the problem here, it's the change in > the behaviour of kill() that is causing postgresql to become confused. > That's what you should investigate. The ESRCH error is being returned from prison_check(), that would be a good starting place. Andrew
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