From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Helge Deller" Subject: Re: threads and fork on machine with VIPT-WB cache Date: Mon, 10 May 2010 11:56:32 +0200 Message-ID: <20100510095632.173760@gmx.net> References: <20100412214118.46D925160@hiauly1.hia.nrc.ca> <20100413115501.307040@gmx.net> <20100419162653.GA106@hiauly1.hia.nrc.ca> <4BCDEB6E.1060408@gmx.de> <20100509124339.GA6797@hiauly1.hia.nrc.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Cc: carlos@systemhalted.org, gniibe@fsij.org, linux-parisc@vger.kernel.org, dave.anglin@nrc-cnrc.gc.ca To: John David Anglin Return-path: In-Reply-To: <20100509124339.GA6797@hiauly1.hia.nrc.ca> List-ID: List-Id: linux-parisc.vger.kernel.org > Attached is my latest 2.6.33.3 patch bundle. It uses a slightly modi= fied > version of James' minifail fix. Thanks Dave! I ran the patch my usual way (SMP kernel, on top of 2.6.33.3, multiple = screens, minifail_dave.cpp testcase). In summary I got after 10 seconds 2 segfaults, and in all of the screen= s the minifail_dave testcases just hang. "ps -ef" gives this: root 2018 1 0 11:29 ? 00:00:00 SCREEN root 2019 2018 0 11:29 pts/1 00:00:01 /bin/bash root 2623 2019 0 11:30 pts/1 00:00:00 ./minifail_dave root 2625 2623 0 11:30 pts/1 00:00:00 [minifail_dave] ls3017:~# strace -p 2623 Process 2623 attached - interrupt to quit futex(0x4113c4e8, FUTEX_WAIT, 2624, NULL^C Process 2623 detached ls3017:~# strace -p 2625 attach: ptrace(PTRACE_ATTACH, ...): Operation not permitted Interestingly, I got only 2 segfaults but 10 screens/minifails were run= ning (and all were zombies). This means to me, that the segfaults and the zombie/futex-waits are mos= t likely unrelated. Helge --=20 GRATIS f=FCr alle GMX-Mitglieder: Die maxdome Movie-FLAT! Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 -- To unsubscribe from this list: send the line "unsubscribe linux-parisc"= in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html