From: Randy Dunlap Subject: Re: Can someone confirm ext4 BUG_ON on latest kernel build? Date: Sun, 19 Jun 2011 08:07:04 -0700 Message-ID: <20110619080704.33753b99.rdunlap@xenotime.net> References: <4DFDCBE0.5020806@halfdog.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: "linux-kernel@vger.kernel.org" To: halfdog , linux-ext4@vger.kernel.org Return-path: Received: from oproxy5-pub.bluehost.com ([67.222.38.55]:40488 "HELO oproxy5-pub.bluehost.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1754171Ab1FSPHH (ORCPT ); Sun, 19 Jun 2011 11:07:07 -0400 In-Reply-To: <4DFDCBE0.5020806@halfdog.net> Sender: linux-ext4-owner@vger.kernel.org List-ID: [adding ext4 mailing list] On Sun, 19 Jun 2011 10:13:52 +0000 halfdog wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Sorry, I do not have latest kernel. Can someone confirm this on latest? > At least bugtracker does not know about it, and to my understanding of > source, should be still here. > > > dd if=/dev/zero bs=1M count=64 of=test > mkfs.ext4 -F test > echo -n " " | dd of=test bs=1 count=1 seek=297195 conv=notrunc > mount -o loop test /mnt/test > dmesg -c > > On ubuntu natty with latest kernel, it seems, that > fs/ext4/super.c:__save_error_info calls mod_timer before timer->function > is set at end of fs/ext4/super.c:ext4_fill_super via > sbi->s_err_report.function = print_daily_error_info; > > This causes BUG_ON(!timer->function) in kernel/timer.c:__mod_timer > Device is stuck, not usable any more. > > Thanks > > - -- > http://www.halfdog.net/ > PGP: 156A AE98 B91F 0114 FE88 2BD8 C459 9386 feed a bee > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.6 (GNU/Linux) > > iD8DBQFN/cvFxFmThv7tq+4RAgfvAJ97N9bnKq4kN99XneTMyJZ5Hha9MQCfcguN > L4trkTeOsIqDWF8m6VUqcgc= > =zvYY > -----END PGP SIGNATURE----- > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***