From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-fx0-f47.google.com ([209.85.161.47]) by linuxtogo.org with esmtp (Exim 4.69) (envelope-from ) id 1OCUhG-0004LG-EO for openembedded-devel@lists.openembedded.org; Thu, 13 May 2010 11:27:17 +0200 Received: by fxm11 with SMTP id 11so993632fxm.6 for ; Thu, 13 May 2010 02:23:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:subject :message-id:references:mime-version:content-type:content-disposition :content-transfer-encoding:in-reply-to:user-agent; bh=WoE1l42LMsKCOpHl4CGPnnpqPR0sXiRmJN5eYQgE77c=; b=Xq1zZpgFAMNsl1TdIs3Z9VGQ0yyQWdyaENT4RZMFC2e7VG9d/kyscOzYPv+0vvN/+s G3gHPtAGHAlHXctcmCweqxGFOOg9KTuBajdfS2PumS+0IjGtOpNqr0cASdIDvtLL0O17 UbqS0a/JUxA8idqH8xAb27h43NRUMKrGU9Xt0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:subject:message-id:references:mime-version :content-type:content-disposition:content-transfer-encoding :in-reply-to:user-agent; b=VsH4REhR5hdgtUb6Z3u8nQJIxqYi4Q/7GqSiIO2lqAZMAEeIeA7Z/txRQGAwOVnWNB 7mHrihcqKZbQJaHxkIUtZkBmX0QFT1sEjr0sGzwPEXhvI7cRmqRCE/dM7bh6flUF34bH CuZQ6KKmUe6UuYImI8A38dbx2vZ2kq/zUloLE= Received: by 10.223.26.154 with SMTP id e26mr1517923fac.57.1273742599456; Thu, 13 May 2010 02:23:19 -0700 (PDT) Received: from localhost (161-24.13.24.78.awnet.cz [78.24.13.161]) by mx.google.com with ESMTPS id 15sm4966867fad.22.2010.05.13.02.23.18 (version=TLSv1/SSLv3 cipher=RC4-MD5); Thu, 13 May 2010 02:23:18 -0700 (PDT) Date: Thu, 13 May 2010 11:23:20 +0200 From: Martin Jansa To: openembedded-devel@lists.openembedded.org Message-ID: <20100513092320.GE3370@jama> References: <201005131223.22252.khimov@altell.ru> <20100513084633.GC3370@jama> <201005131259.13508.khimov@altell.ru> MIME-Version: 1.0 In-Reply-To: <201005131259.13508.khimov@altell.ru> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: 209.85.161.47 X-SA-Exim-Mail-From: martin.jansa@gmail.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on discovery X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=AWL,BAYES_00,SPF_PASS autolearn=ham version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:20:07 +0000) X-SA-Exim-Scanned: Yes (on linuxtogo.org) Subject: Re: some possible fixes in the OE web pages X-BeenThere: openembedded-devel@lists.openembedded.org X-Mailman-Version: 2.1.11 Precedence: list Reply-To: openembedded-devel@lists.openembedded.org List-Id: Using the OpenEmbedded metadata to build Distributions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 May 2010 09:27:17 -0000 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit On Thu, May 13, 2010 at 12:59:13PM +0400, Roman I Khimov wrote: > В сообщении от Четверг 13 мая 2010 12:46:33 автор Martin Jansa написал: > > On Thu, May 13, 2010 at 12:23:22PM +0400, Roman I Khimov wrote: > > > Well, as the problem is in the kernel really, I think everyone having > > > this problem should push distro maintainers to update kernels with the > > > tiny fix mentioned above. But as a workaround, yep, "0" setting might > > > work (beware that it might also not work as in here: > > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/423513 > > > ). > > > > Another not tested workaround: > > > > as qemu can work with (hopefully any) non-zero mmap_min_addr, maybe add > > patch to linux-user/main.c that if it cannot read > > /proc/sys/vm/mmap_min_addr then assume 65536 (ubuntu default)? > > Fedora has the same default, so this should work. Can we compare this simple test between working and non-working systems? This is from working gentoo 2.6.34-rc7: bitbake@jama ~/mmap-test $ wget http://build.shr-project.org/tests/jama/mmap-test.c bitbake@jama ~/mmap-test $ gcc mmap-test.c -o mmap-test bitbake@jama ~/mmap-test $ ./mmap-test cannot read value from /proc/sys/vm/mmap_min_addr bitbake@jama ~/mmap-test $ strace ./mmap-test execve("./mmap-test", ["./mmap-test"], [/* 26 vars */]) = 0 brk(0) = 0xded000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7647150000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=22777, ...}) = 0 mmap(NULL, 22777, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f764714a000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\354\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1424560, ...}) = 0 mmap(NULL, 3533704, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7646bd5000 mprotect(0x7f7646d2a000, 2097152, PROT_NONE) = 0 mmap(0x7f7646f2a000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x155000) = 0x7f7646f2a000 mmap(0x7f7646f2f000, 19336, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7646f2f000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7647149000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7647148000 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7647147000 arch_prctl(ARCH_SET_FS, 0x7f7647148700) = 0 mprotect(0x7f7646f2a000, 16384, PROT_READ) = 0 mprotect(0x600000, 4096, PROT_READ) = 0 mprotect(0x7f7647151000, 4096, PROT_READ) = 0 munmap(0x7f764714a000, 22777) = 0 brk(0) = 0xded000 brk(0xe0e000) = 0xe0e000 open("/proc/sys/vm/mmap_min_addr", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f764714f000 read(3, 0x7f764714f000, 1024) = -1 EPERM (Operation not permitted) fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 16), ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f764714e000 write(1, "cannot read value from /proc/sys"..., 50cannot read value from /proc/sys/vm/mmap_min_addr ) = 50 close(3) = 0 munmap(0x7f764714f000, 4096) = 0 exit_group(0) = ? Regards, -- uin:136542059 jid:Martin.Jansa@gmail.com Jansa Martin sip:jamasip@voip.wengo.fr JaMa