From mboxrd@z Thu Jan 1 00:00:00 1970 From: EUNBONG SONG Subject: Re: Re: EXT4 panic at jbd2_journal_put_journal_head() in 3.9+ Date: Fri, 10 May 2013 00:51:51 +0000 (GMT) Message-ID: <6719519.5821368147110937.JavaMail.weblogic@epml17> Reply-To: eunb.song@samsung.com Mime-Version: 1.0 Content-Type: text/plain; charset=euc-kr Content-Transfer-Encoding: base64 Cc: "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" To: Theodore Ts'o Return-path: Received: from mailout4.samsung.com ([203.254.224.34]:42208 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757360Ab3EJAvx (ORCPT ); Thu, 9 May 2013 20:51:53 -0400 Received: from epcpsbgr5.samsung.com (u145.gpu120.samsung.co.kr [203.254.230.145]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MMK00F7M52DB440@mailout4.samsung.com> for linux-ext4@vger.kernel.org; Fri, 10 May 2013 09:51:51 +0900 (KST) MIME-version: 1.0 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cbfee691-b7fe56d000004b96-92-518c44a820aa Date: Fri, 10 May 2013 00:51:52 +0000 (GMT) From: EUNBONG SONG Subject: Re: Re: EXT4 panic at jbd2_journal_put_journal_head() in 3.9+ To: "Theodore Ts'o" Cc: "linux-ext4@vger.kernel.org" , "linux-kernel@vger.kernel.org" Reply-to: eunb.song@samsung.com MIME-version: 1.0 X-MTR: 20130510003819803@eunb.song Msgkey: 20130510003819803@eunb.song X-EPLocale: ko_KR.euc-kr X-Priority: 3 X-EPWebmail-Msg-Type: personal X-EPWebmail-Reply-Demand: 0 X-EPApproval-Locale: X-EPHeader: ML X-EPTrCode: X-EPTrName: X-MLAttribute: X-RootMTR: 20130510003819803@eunb.song X-ParentMTR: X-ArchiveUser: X-CPGSPASS: N Content-type: text/plain; charset=euc-kr MIME-version: 1.0 Message-id: <6719519.5821368147110937.JavaMail.weblogic@epml17> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjleLIzCtJLcpLzFFi42I5/e+Zpu4Kl55Ag/MHuSwu75rD5sDo8XmT XABjFJdNSmpOZllqkb5dAlfG0buNbAX7jCtePrrN2MA4waiLkZNDSEBFouX/d0YQW0LARGLP lCOsELaYxIV769m6GLmAapYxSizvvgVXdOxFGzNEYj6jRMe5aUAJDg4WAVWJ/5OsQWrYBLQl 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message, (i.e., the panic, the BUG, > WARN, the registers, etc.), and not the stack trace? > - Ted Hi, Ted Actually i try to find the crash point. And i confirmed crash point is in __journal_remove_journal_head() function. I added some debug code and i found J_ASSERT_JH is failed for jh->b_transaction. My source tree has some modifications only for MIPS architecture. I don't think it does not affect to ext4 operation. Also I confirmed the problem is not reproduced before merge 149b306089b88e186942a8d6647028ae6683aaf9. 149b306089b88e186942a8d6647028ae6683aaf9 Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 My full crash messages are as follows. Iozone: Performance Test of File I/O Version $Revision: 3.397 $ Compiled for 64 bit mode. Build: linux-powerpc64 Contributors:William Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rhine, Mike Wisner, Ken Goss Steve Landherr, Brad Smith, Mark Kelly, Dr. Alain CYR, Randy Dunlap, Mark Montague, Dan Million, Gavin Brebner, Jean-Marc Zucconi, Jeff Blomberg, Benny Halevy, Dave Boone, Erik Habbinga, Kris Strecker, Walter Wong, Joshua Roo[ 233.458766] CPU: 3 PID: 1535 Comm: iozone Not tainted 3.9.0+ #81 t, Fabrice Bacchella, Zhenghua Xue, Qin Li, Darre[ 233.470132] Stack :n Sawyer. Ben England. Run began: Sun Dec 10 ffffffff8101143808:38:24 2000 Record Size 64 KB File size set to 5120 KB a80000008b64b000 SYNC Mode. Command line used: iozone -l 20 -u 20 -r 64k -s 5 0000000000000003m -o -F /user/f1 /user/f2 /user/f3 /user/f4 /user/f5 /user/f6 /u ffffffff80292470ser/f7 /user/f8 /user/f9 /user/f10 /user/f11 /user/f12 /user/f13 /user/f14 /user/f15 /user/f16 /user/f17 /user/f18 /user/f19 /us 0000000000000000er/f20 Output is in Kbytes/sec Time Resolution = 0.000001 se ffffffff80fa0000conds. Processor cache size set to 1024 Kbytes. Processor ca 000000000000001fche line size set to 32 bytes. File stride size set to 17 * re ffffffff80293728cord size. Min process = 20 Max process = 20 Throughput test with 20 processes Each process writes a 5120 Kbyte file i 0000000000000000n 64 Kbyte records 0000000000000000 ffffffff81080000 ffffffff81080000 ffffffff80e2abf0 ffffffff80f8f9f7 a8000002017a0db8 0000000000000020 0000000000000003 0000000000000020 a80000020025f968 ffffffff810f0000 a80000020025f770 ffffffff806ee88c a80000020025f588 ffffffff80290994 000000007ef10087 ffffffff80293b58 000000000000000a ffffffff80e2abf0 0000000000000003 a80000020025f4b0 00000002017a10f8 ffffffff805e68b4 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffffffff80272418 0000000000000000 0000000000000000 ... [ 233.604041] Call Trace: [ 233.606495] [] show_stack+0x68/0x80 [ 233.611550] [] cdr_event_handler+0x604/0xbf8 [ 233.617384] [] cdr_event_die+0xd0/0x150 [ 233.622784] [] notifier_call_chain+0x5c/0xa8 [ 233.628619] [] __atomic_notifier_call_chain+0x3c/0x58 [ 233.635233] [] notify_die+0x38/0x48 [ 233.640285] [] do_trap_or_bp+0x48/0x1a8 [ 233.645684] [] resume_userspace_check+0x0/0x10 [ 233.651695] [] jbd2_journal_put_journal_head+0xcc/0x250 [ 233.658484] [] jbd2_journal_get_write_access+0x3c/0x58 [ 233.665188] [] __ext4_journal_get_write_access+0x58/0xa0 [ 233.672064] [] ext4_reserve_inode_write+0x84/0xb0 [ 233.678331] [] ext4_mark_inode_dirty+0x3c/0x1e0 [ 233.684424] [] ext4_dirty_inode+0x40/0x70 [ 233.689998] [] __mark_inode_dirty+0x48/0x238 [ 233.695832] [] update_time+0xb4/0x100 [ 233.701058] [] file_update_time+0xb0/0x108 [ 233.706718] [] __generic_file_aio_write+0x180/0x380 [ 233.713158] [] generic_file_aio_write+0x60/0xc0 [ 233.719252] [] ext4_file_write+0x6c/0x468 [ 233.724827] [] do_sync_write+0x84/0xe8 [ 233.730139] [] vfs_write+0xe0/0x1e0 [ 233.735191] [] SyS_write+0x50/0xc0 [ 233.740157] [] handle_sys64+0x44/0x64 Thanks. {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I