Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762763Ab3DCJyA (ORCPT ); Wed, 3 Apr 2013 05:54:00 -0400 Received: from mail-la0-f44.google.com ([209.85.215.44]:35133 "EHLO mail-la0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761590Ab3DCJx4 (ORCPT ); Wed, 3 Apr 2013 05:53:56 -0400 From: Dmitry Monakhov To: Christian Kujau Cc: CAI Qian , "Theodore Ts'o" , LKML , linux-s390 , Steve Best , linux-ext4@vger.kernel.org, Zheng Liu Subject: Re: s390x: kernel BUG at fs/ext4/inode.c:1591! (powerpc too!) In-Reply-To: <87li90q9mx.fsf@openvz.org> References: <2133129347.8273339.1364549222854.JavaMail.root@redhat.com> <87ip46ss0o.fsf@openvz.org> <1211053180.322948.1364797847717.JavaMail.root@redhat.com> <87fvzaspr8.fsf@openvz.org> <874841142.414482.1364875584266.JavaMail.root@redhat.com> <877gkls1q7.fsf@openvz.org> <87r4isd1vn.fsf@openvz.org> <87li90q9mx.fsf@openvz.org> User-Agent: Notmuch/0.6.1 (http://notmuchmail.org) Emacs/23.3.1 (x86_64-redhat-linux-gnu) Date: Wed, 03 Apr 2013 13:53:49 +0400 Message-ID: <87hajoq6s2.fsf@openvz.org> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="=-=-=" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 14017 Lines: 235 --=-=-= On Wed, 03 Apr 2013 12:52:06 +0400, Dmitry Monakhov wrote: Non-text part: multipart/mixed > On Tue, 2 Apr 2013 16:22:41 -0700 (PDT), Christian Kujau wrote: > > On Wed, 3 Apr 2013 at 02:05, Dmitry Monakhov wrote: > > > Please drop that patch and collect logs with a kernel which > > > has only 0001-enable-ES_AGGRESSIVE_TEST-V2.patch patch applied > Ok I have found at least one issue. Yeah.. My college advise me to use sparse in order to spot all cpu_to_ondisk format conversion make C=2 CF="-D__CHECK_ENDIAN__" fs/ext4/ And it spotted a huge amount of issues. Which tell us that we are deeply in shit. --=-=-= Content-Disposition: inline; filename=sparse.log :1220:2: warning: #warning syscall kcmp not implemented :1223:2: warning: #warning syscall finit_module not implemented fs/ext4/ialloc.c:902:37: warning: symbol 'sbi' shadows an earlier one fs/ext4/ialloc.c:650:29: originally declared here fs/ext4/inode.c:58:17: warning: incorrect type in assignment (different base types) fs/ext4/inode.c:58:17: expected unsigned short [unsigned] [usertype] csum_lo fs/ext4/inode.c:58:17: got restricted __le16 [usertype] l_i_checksum_lo fs/ext4/inode.c:62:25: warning: incorrect type in assignment (different base types) fs/ext4/inode.c:62:25: expected unsigned short [unsigned] [usertype] csum_hi fs/ext4/inode.c:62:25: got restricted __le16 [usertype] i_checksum_hi fs/ext4/inode.c:69:28: warning: incorrect type in assignment (different base types) fs/ext4/inode.c:69:28: expected restricted __le16 [usertype] l_i_checksum_lo fs/ext4/inode.c:69:28: got unsigned short [unsigned] [usertype] csum_lo fs/ext4/inode.c:72:36: warning: incorrect type in assignment (different base types) fs/ext4/inode.c:72:36: expected restricted __le16 [usertype] i_checksum_hi fs/ext4/inode.c:72:36: got unsigned short [unsigned] [usertype] csum_hi include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction fs/ext4/ioctl.c:358:36: warning: symbol 'sb' shadows an earlier one fs/ext4/ioctl.c:26:28: originally declared here fs/ext4/namei.c:2008:36: warning: potentially expensive pointer subtraction fs/ext4/namei.c:423:18: warning: incorrect type in assignment (different base types) fs/ext4/namei.c:423:18: expected unsigned int [unsigned] [usertype] old_csum fs/ext4/namei.c:423:18: got restricted __le32 [usertype] dt_checksum fs/ext4/namei.c:427:24: warning: incorrect type in assignment (different base types) fs/ext4/namei.c:427:24: expected restricted __le32 [usertype] dt_checksum fs/ext4/namei.c:427:24: got unsigned int [unsigned] [usertype] old_csum include/trace/events/ext4.h:1926:1: warning: cast from restricted __le32 include/trace/events/ext4.h:1926:1: warning: incorrect type in assignment (different base types) include/trace/events/ext4.h:1926:1: expected unsigned int [unsigned] [usertype] ee_lblk include/trace/events/ext4.h:1926:1: got restricted __le32 [usertype] include/trace/events/ext4.h:1926:1: warning: cast from restricted __le32 include/trace/events/ext4.h:1926:1: warning: incorrect type in assignment (different base types) include/trace/events/ext4.h:1926:1: expected unsigned int [unsigned] [usertype] ee_lblk include/trace/events/ext4.h:1926:1: got restricted __le32 [usertype] fs/ext4/super.c:1957:26: warning: incorrect type in assignment (different base types) fs/ext4/super.c:1957:26: expected unsigned short [unsigned] [usertype] old_csum fs/ext4/super.c:1957:26: got restricted __le16 [usertype] bg_checksum fs/ext4/super.c:1963:34: warning: incorrect type in assignment (different base types) fs/ext4/super.c:1963:34: expected restricted __le16 [usertype] bg_checksum fs/ext4/super.c:1963:34: got unsigned short [unsigned] [usertype] old_csum include/uapi/linux/swab.h:60:16: error: undefined identifier '__builtin_bswap32' include/uapi/linux/swab.h:60:33: error: not a function fs/ext4/extents.c:3002:48: warning: incorrect type in assignment (different base types) fs/ext4/extents.c:3002:48: expected restricted __le16 [assigned] [usertype] ee_len fs/ext4/extents.c:3002:48: got restricted __be16 [usertype] fs/ext4/extents.c:3008:48: warning: incorrect type in assignment (different base types) fs/ext4/extents.c:3008:48: expected restricted __le16 [addressable] [assigned] [usertype] ee_len fs/ext4/extents.c:3008:48: got restricted __be16 [usertype] fs/ext4/extents.c:3015:40: warning: incorrect type in assignment (different base types) fs/ext4/extents.c:3015:40: expected restricted __le16 [addressable] [assigned] [usertype] ee_len fs/ext4/extents.c:3015:40: got restricted __be16 [usertype] fs/ext4/extents.c:603:28: warning: potentially expensive pointer subtraction fs/ext4/extents.c:671:28: warning: potentially expensive pointer subtraction fs/ext4/extents.c:849:43: warning: potentially expensive pointer subtraction fs/ext4/extents.c:984:47: warning: potentially expensive pointer subtraction fs/ext4/extents.c:1063:50: warning: potentially expensive pointer subtraction fs/ext4/extents.c:1656:52: warning: potentially expensive pointer subtraction fs/ext4/extents.c:1706:32: warning: potentially expensive pointer subtraction fs/ext4/extents.c:1929:43: warning: potentially expensive pointer subtraction fs/ext4/extents.c:2206:55: warning: potentially expensive pointer subtraction fs/ext4/extents.c:2528:72: warning: potentially expensive pointer subtraction fs/ext4/extents.c:2787:36: warning: incorrect type in argument 5 (different base types) fs/ext4/extents.c:2787:36: expected unsigned short [unsigned] eh_entries fs/ext4/extents.c:2787:36: got restricted __le16 [usertype] eh_entries fs/ext4/extents.c:3275:32: warning: incorrect type in assignment (different base types) fs/ext4/extents.c:3275:32: expected restricted __le16 [assigned] [usertype] ee_len fs/ext4/extents.c:3275:32: got restricted __be16 [usertype] fs/ext4/extents.c:4642:34: warning: cast from restricted __le16 fs/ext4/extents.c:4642:34: warning: incorrect type in argument 1 (different base types) fs/ext4/extents.c:4642:34: expected unsigned short [unsigned] [usertype] val fs/ext4/extents.c:4642:34: got restricted __le16 [usertype] eh_entries fs/ext4/extents.c:4642:34: warning: cast from restricted __le16 fs/ext4/extents.c:4642:34: warning: cast from restricted __le16 fs/ext4/extents.c:4642:34: warning: restricted __be16 degrades to integer fs/ext4/mballoc.c:863:21: warning: symbol 'group' shadows an earlier one fs/ext4/mballoc.c:795:35: originally declared here include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction fs/ext4/mballoc.c:4855:9: warning: context imbalance in 'ext4_trim_extent' - unexpected unlock fs/ext4/move_extent.c:859:29: warning: symbol 'err' shadows an earlier one fs/ext4/move_extent.c:835:16: originally declared here include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction fs/ext4/mmp.c:18:16: warning: incorrect type in return expression (different base types) fs/ext4/mmp.c:18:16: expected unsigned int fs/ext4/mmp.c:18:16: got restricted __le32 [usertype] fs/ext4/mmp.c:27:19: warning: restricted __le32 degrades to integer fs/ext4/mmp.c:36:27: warning: incorrect type in assignment (different base types) fs/ext4/mmp.c:36:27: expected restricted __le32 [usertype] mmp_checksum fs/ext4/mmp.c:36:27: got unsigned int fs/ext4/indirect.c:579:41: warning: potentially expensive pointer subtraction fs/ext4/indirect.c:592:52: warning: potentially expensive pointer subtraction fs/ext4/indirect.c:1257:68: warning: potentially expensive pointer subtraction fs/ext4/indirect.c:1268:67: warning: potentially expensive pointer subtraction fs/ext4/indirect.c:1275:48: warning: potentially expensive pointer subtraction fs/ext4/indirect.c:1327:52: warning: incorrect type in argument 2 (different base types) fs/ext4/indirect.c:1327:52: expected unsigned long [unsigned] [usertype] block fs/ext4/indirect.c:1327:52: got restricted __le32 [assigned] [usertype] blk fs/ext4/indirect.c:1329:33: warning: incorrect type in argument 4 (different base types) fs/ext4/indirect.c:1329:33: expected unsigned long long [unsigned] [usertype] fs/ext4/indirect.c:1329:33: got restricted __le32 [assigned] [usertype] blk fs/ext4/xattr.c:127:13: warning: incorrect type in assignment (different base types) fs/ext4/xattr.c:127:13: expected unsigned int [unsigned] [usertype] old fs/ext4/xattr.c:127:13: got restricted __le32 [usertype] h_checksum fs/ext4/xattr.c:129:18: warning: incorrect type in assignment (different base types) fs/ext4/xattr.c:129:18: expected unsigned long [unsigned] [usertype] block_nr fs/ext4/xattr.c:129:18: got restricted __le64 [usertype] fs/ext4/xattr.c:135:25: warning: incorrect type in assignment (different base types) fs/ext4/xattr.c:135:25: expected restricted __le32 [usertype] h_checksum fs/ext4/xattr.c:135:25: got unsigned int [unsigned] [usertype] old include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction include/linux/mm.h:759:16: warning: potentially expensive pointer subtraction --=-=-= So please give me couple of hours and I'll send you a complete patch. > Please give a try to this patch > diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c > index 1530cf4..e8460f6 100644 > --- a/fs/ext4/extents.c > +++ b/fs/ext4/extents.c > @@ -3272,7 +3272,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, > if (err) > goto out; > zero_ex.ee_block = ex->ee_block; > - zero_ex.ee_len = ext4_ext_get_actual_len(ex); > + zero_ex.ee_len = cpu_to_le16(ext4_ext_get_actual_len(ext)); > ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex)); > > err = ext4_ext_get_access(handle, inode, path + depth); > > > > > I've applied (only) 0001-enable-ES_AGGRESSIVE_TEST-V2.patch to 3.9-rc4: > > > > patching file fs/ext4/extents_status.h > > patching file fs/ext4/inode.c > > Hunk #1 succeeded at 1588 (offset 42 lines). > > Hunk #2 succeeded at 1609 (offset 42 lines). > > > > And tried to download some images via bittorrent. As expected, lots of > > "ES cache assertation failed" were being logged: > > > > http://nerdbynature.de/bits/3.9.0-rc4/ext4/ > > => messages_0001-enable-ES_AGGRESSIVE_TEST-V2.txt.xz > > > > I've tried to download 3 files, all via bittorrent (so, fallocate & heavy > > mmap) > > > > 1) 8GB Fedora iso, there are also WARNINGs bring triggered, see below. > > I decided to cancel the download after some gigabyes. > > > > 2) A 50 MB Debian iso, this produced just one "ES cache assertation" > > message. Download went OK, checksum was correct too. > > > > 3) A 221 MB Fedora iso, produced a couple of "ES cache assertation" > > messages, but no WARNINGs. Download went OK, checksum was correct too. > > > > It's all in that messages_0001-enable-ES_AGGRESSIVE_TEST-V2.txt.xz file > > above. I just e2fsck'ed the ext4 filesystem again (and did so last night), > > but no errors were found. > > > > HTH, > > Christian. > > > > One of the WARNINGs during that 8GB download: > > > > ino:39190654 lbkl:0, b_state=0x0004b988, b_size=4131 > > ------------[ cut here ]------------ > > WARNING: at /opt/linux-git/fs/ext4/inode.c:1600 > > Modules linked in: md5 ecb nfs i2c_powermac therm_adt746x ecryptfs firewire_sbp2 arc4 b43 usb_storage mac80211 cfg80211 > > NIP: c013745c LR: c013745c CTR: c000df9c > > REGS: edc479a0 TRAP: 0700 Tainted: G W (3.9.0-rc4-dirty) > > MSR: 00029032 CR: 44028644 XER: 20000000 > > TASK = edca9740[4379] 'flush-254:1' THREAD: edc46000 > > GPR00: c013745c edc47a50 edca9740 00000034 edca9db0 00000006 00000000 00008000 > > GPR08: 00003fb0 00218f23 00000000 c000006e 00000dc9 00000000 00000009 ee18cca0 > > GPR16: edc47c78 0000000e 0004b9bf 0004b988 00000000 edc47a84 00001000 e6357540 > > GPR24: edc47b78 e6357540 00000000 0004b97f 00000000 0051d188 00000000 0004b988 > > NIP [c013745c] mpage_da_submit_io+0x3dc/0x3f0 > > LR [c013745c] mpage_da_submit_io+0x3dc/0x3f0 > > Call Trace: > > [edc47a50] [c013745c] mpage_da_submit_io+0x3dc/0x3f0 (unreliable) > > [edc47b30] [c013c9f0] mpage_da_map_and_submit+0x16c/0x5f0 > > [edc47bc0] [c013d2e4] write_cache_pages_da+0x470/0x480 > > [edc47c70] [c013d554] ext4_da_writepages+0x260/0x49c > > [edc47d20] [c00eeea0] __writeback_single_inode+0x34/0x120 > > [edc47d40] [c00ef508] writeback_sb_inodes+0x1fc/0x34c > > [edc47db0] [c00ef6e4] __writeback_inodes_wb+0x8c/0xd0 > > [edc47de0] [c00efa90] wb_writeback+0x1b4/0x1bc > > [edc47e20] [c00f06d0] wb_do_writeback+0x1ec/0x1f4 > > [edc47e80] [c00f0748] bdi_writeback_thread+0x70/0x140 > > [edc47eb0] [c0051c18] kthread+0xa8/0xac > > [edc47f40] [c00106cc] ret_from_kernel_thread+0x64/0x6c > > --- Exception: 0 at (null) > > LR = (null) > > Instruction dump: > > > > -- > > BOFH excuse #61: > > > > not approved by the FCC --=-=-=-- -- 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/