Date: Thu, 05 Jun 2003 04:10:04 -0700 From: Terry Lambert <tlambert2@mindspring.com> To: Jeff Roberson <jroberson@chesapeake.net> Cc: current@freebsd.org Subject: Re: umtx/libthr SMP fixes. Message-ID: <3EDF250C.F79876F7@mindspring.com> References: <20030604021752.Y69975-100000@mail.chesapeake.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Jeff Roberson wrote: > On Tue, 3 Jun 2003, Terry Lambert wrote: > > Scott Long wrote: > > > Bryan Liesner wrote: > > > It's very hard to imagine Jeff's patches causing a problem at the point > > > that the PR mentions. Have you confirmed the problem in a kernel that > > > was build in a totally clean environment? > > > > The changed code is not protecting a traversal of a proc > > struct member with a proc lock in two places. What's hard > > to imagine? > > This is no longer the case with the latest revision. Apparently the > panics in cam continue even after the proc lock issues were fixed. As I said: I still think there is a lost serialization here that's at the root of the problem. I can't really dedicate the equipment I have here to reproducing the issue at this time, or I'd track down the race I think may be happening. -- Terry
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3EDF250C.F79876F7>