* Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression [not found] ` <AANLkTi=6050iOnC_Sy+SY7EYVkQ979fJh5n8o8bjRUGA@mail.gmail.com> @ 2011-02-15 23:48 ` Matt 0 siblings, 0 replies; 6+ messages in thread From: Matt @ 2011-02-15 23:48 UTC (permalink / raw) To: Dan Magenheimer Cc: gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, minchan.kim, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan On Mon, Feb 14, 2011 at 8:59 PM, Matt <jackdachef@gmail.com> wrote: > On Mon, Feb 14, 2011 at 1:29 AM, Matt <jackdachef@gmail.com> wrote: >> On Mon, Feb 14, 2011 at 1:24 AM, Matt <jackdachef@gmail.com> wrote: >>> On Mon, Feb 14, 2011 at 12:08 AM, Matt <jackdachef@gmail.com> wrote: >>>> On Wed, Feb 9, 2011 at 1:03 AM, Dan Magenheimer >>>> <dan.magenheimer@oracle.com> wrote: >>>> [snip] >>>>> >>>>> If I've missed anything important, please let me know! >>>>> >>>>> Thanks again! >>>>> Dan >>>>> >>>> >>>> Hi Dan, >>>> >>>> thank you so much for answering my email in such detail ! >>>> >>>> I shall pick up on that mail in my next email sending to the mailing l= ist :) >>>> >>>> >>>> currently I've got a problem with btrfs which seems to get triggered >>>> by cleancache get-operations: >>>> >>>> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297377] device fsid >>>> 354120c992a00761-5fa07d400126a895 devid 1 transid 7 >>>> /dev/mapper/portage >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297698] btrfs: enabling disk spac= e caching >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297700] btrfs: force lzo compress= ion >>>> Feb 14 00:37:19 lupus kernel: [ 2831.315844] zcache: created ephemeral >>>> tmem pool, id=3D3 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853188] BUG: unable to handle >>>> kernel paging request at 0000000001400050 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853219] IP: [<ffffffff8133ef1b>] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853242] PGD 0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853251] Oops: 0000 [#1] PREEMPT S= MP >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853275] last sysfs file: >>>> /sys/devices/platform/coretemp.3/temp1_input >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853295] CPU 4 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853303] Modules linked in: radeon >>>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >>>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >>>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp >>>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >>>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack xt_mark >>>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables >>>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss snd_seq_midi_event >>>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi >>>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm >>>> snd_timer snd soundcore i2c_i801 wmi e1000e shpchp snd_page_alloc >>>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >>>> ehci_hcd [last unloaded: tg3] >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853682] >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853690] Pid: 11394, comm: >>>> btrfs-transacti Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower >>>> G3710 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853725] RIP: >>>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853751] RSP: >>>> 0018:ffff880129a11b00 =A0EFLAGS: 00010246 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853767] RAX: 00000000000000ff >>>> RBX: ffff88014a1ce628 RCX: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853788] RDX: ffff880129a11b3c >>>> RSI: ffff880129a11b70 RDI: 0000000000000006 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853808] RBP: 0000000001400000 >>>> R08: ffffffff8133eef0 R09: ffff880129a11c68 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853829] R10: 0000000000000001 >>>> R11: 0000000000000001 R12: ffff88014a1ce780 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853849] R13: ffff88021fefc000 >>>> R14: ffff88021fef9000 R15: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853870] FS: >>>> 0000000000000000(0000) GS:ffff8800bf500000(0000) >>>> knlGS:0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853894] CS: =A00010 DS: 0000 ES: >>>> 0000 CR0: 000000008005003b >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853911] CR2: 0000000001400050 >>>> CR3: 0000000001c27000 CR4: 00000000000006e0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853932] DR0: 0000000000000000 >>>> DR1: 0000000000000000 DR2: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853952] DR3: 0000000000000000 >>>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853973] Process btrfs-transacti >>>> (pid: 11394, threadinfo ffff880129a10000, task ffff880202e4ac40) >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853999] Stack: >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854006] =A0ffff880129a11b50 >>>> ffff880000000003 ffff88003c60a098 0000000000000003 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854035] =A0ffffffffffffffff >>>> ffffffff810e6aaa 0000000000000000 0000000602e4ac40 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854063] =A0ffffffff8133e3f0 >>>> ffffffff810e6cee 0000000000001000 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854092] Call Trace: >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854103] =A0[<ffffffff810e6aaa>] ? >>>> cleancache_get_key+0x4a/0x60 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854122] =A0[<ffffffff8133e3f0>] ? >>>> btrfs_wake_function+0x0/0x20 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854140] =A0[<ffffffff810e6cee>] ? >>>> __cleancache_flush_inode+0x3e/0x70 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854161] =A0[<ffffffff810b34d2>] ? >>>> truncate_inode_pages_range+0x42/0x440 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854182] =A0[<ffffffff812f115e>] ? >>>> btrfs_search_slot+0x89e/0xa00 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854201] =A0[<ffffffff810c3a45>] ? >>>> unmap_mapping_range+0xc5/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854220] =A0[<ffffffff810b3930>] ? >>>> truncate_pagecache+0x40/0x70 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854240] =A0[<ffffffff813458b1>] ? >>>> btrfs_truncate_free_space_cache+0x81/0xe0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854261] =A0[<ffffffff812fce15>] ? >>>> btrfs_write_dirty_block_groups+0x245/0x500 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854283] =A0[<ffffffff812fcb6a>] ? >>>> btrfs_run_delayed_refs+0x1ba/0x220 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854304] =A0[<ffffffff8130afff>] ? >>>> commit_cowonly_roots+0xff/0x1d0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854323] =A0[<ffffffff8130c583>] ? >>>> btrfs_commit_transaction+0x363/0x760 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854344] =A0[<ffffffff81067ea0>] ? >>>> autoremove_wake_function+0x0/0x30 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854364] =A0[<ffffffff81305bc3>] ? >>>> transaction_kthread+0x283/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854383] =A0[<ffffffff81305940>] ? >>>> transaction_kthread+0x0/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854401] =A0[<ffffffff81305940>] ? >>>> transaction_kthread+0x0/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854420] =A0[<ffffffff81067a16>] ? >>>> kthread+0x96/0xa0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854437] =A0[<ffffffff81003514>] ? >>>> kernel_thread_helper+0x4/0x10 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854455] =A0[<ffffffff81067980>] ? >>>> kthread+0x0/0xa0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854471] =A0[<ffffffff81003510>] ? >>>> kernel_thread_helper+0x0/0x10 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854488] Code: 55 b8 ff 00 00 00 >>>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854742] RIP =A0[<ffffffff8133ef1b= >] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854762] =A0RSP <ffff880129a11b00> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854773] CR2: 0000000001400050 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.860906] ---[ end trace >>>> f831c5ceeaa49287 ]--- >>>> >>>> in my case I had compress-force with lzo and disk_cache enabled >>>> >>>> >>>> another user of the kernel I'm currently running has had the same >>>> problem with zcache >>>> (http://forums.gentoo.org/viewtopic-p-6571799.html#6571799) >>>> >>>> (looks like in his case compression and any other fancy additional >>>> features weren't enabled) >>>> >>>> >>>> changes made by this kernel or patchset to btrfs are from >>>> * io-less dirty throttling patchset (44 patches) >>>> * zcache V2 ("[PATCH] staging: zcache: fix memory leak" should be >>>> applied in both cases) >>>> * PATCH] fix (latent?) memory corruption in btrfs_encode_fh() >>>> * btrfs-unstable changes to state of >>>> 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 (so practically equals btrfs >>>> from 2.6.38-rc4+) >>>> >>>> I haven't tried downgrading to vanilla 2.6.37 with zcache only, yet, >>>> >>>> but kind of upgraded btrfs to the latest state of the btrfs-unstable >>>> repository (http://git.eu.kernel.org/?p=3Dlinux/kernel/git/mason/btrfs= -unstable.git;a=3Dsummary) >>>> namely 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 >>>> >>>> this also didn't help and seemed to produce the same error-message >>>> >>>> so to summarize: >>>> >>>> 1) error message appearing with all 4 patchsets applied changing >>>> btrfs-code and compress-force=3Dlzo and disk_cache enabled >>>> >>>> 2) error message appearing with default mount-options and btrfs from >>>> 2.6.37 and changes for zcache & io-less dirty throttling patchset >>>> applied (first 2 patch(sets)) from list) >>>> >>>> >>>> in my case I tried to extract / play back a 1.7 GiB tarball of my >>>> portage-directory (lots of small files and some tar.bzip2 archives) >>>> via pbzip2 or 7z when the error happened and the message was shown >>>> >>>> Due to KMS sound (webradio streaming) was still running but I couldn't >>>> continue work (X switching to kernel output) so I did the magic sysrq >>>> combo (reisub) >>>> >>>> >>>> Does that BUG message ring a bell for anyone ? >>>> >>>> (if I should leave out anyone from the CC in the next emails or >>>> future, please holler - I don't want to spam your inboxes) >>>> >>>> Thanks >>>> >>>> Matt >>>> >>> >>> >>> OK, >>> >>> here's the output of a kernel - >>> >>> staying as close to vanilla (2.6.37) as the current situation allows >>> (only including some corruption or leak fixes for zram & zcache and >>> "zram_xvmalloc: 64K page fixes and optimizations" (and 2 reiserfs >>> fixes)): >>> >>> so in total the following patches are included in this new kernel >>> (2.6.37-zcache): >>> >>> zram changes: >>> 1 zram: Fix sparse warning 'Using plain integer as NULL pointer' >>> 2 [PATCH] zram: fix data corruption issue >>> 3 [PATCH 0/7][v2] zram_xvmalloc: 64K page fixes and optimizations >>> >>> zcache: >>> 1 zcache-linux-2.6.37-110205 >>> 2 [PATCH] staging: zcache: fix memory leak >>> 3 [PATCH] zcache: Fix build error when sysfs is not defined >>> >>> reiserfs: >>> 1 [PATCH] reiserfs: Make sure va_end() is always called after >>> 2 [patch] reiserfs: potential ERR_PTR dereference >>> >>> >>> the same procedure: >>> >>> trying to extract the mentioned portage-tarball: >>> >>> time (7z e -so -tbzip2 -mmt=3D5 /system/portage_backup_022011.tbz2 | ta= r >>> -xp -C /usr/gentoo/) >>> >>> >>> this hopefully should make it easier to track down the problem: >>> >>> >>> Feb 14 01:59:59 lupus kernel: [ =A0364.777143] device fsid >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 7 >>> /dev/mapper/portage >>> Feb 14 01:59:59 lupus kernel: [ =A0364.844994] zcache: created ephemera= l >>> tmem pool, id=3D2 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577573] BUG: unable to handle >>> kernel paging request at 0000000037610050 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577605] IP: [<ffffffff81338cbb>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577630] PGD 0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577640] Oops: 0000 [#1] PREEMPT = SMP >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577665] last sysfs file: >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577693] CPU 5 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577701] Modules linked in: radeo= n >>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp >>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack xt_mark >>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables >>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss snd_seq_midi_event >>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi >>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm >>> snd_timer snd e1000e soundcore i2c_i801 shpchp snd_page_alloc wmi >>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >>> ehci_hcd [last unloaded: tg3] >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578114] >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578124] Pid: 8285, comm: tar Not >>> tainted 2.6.37-zcache #2 FMP55/ipower G3710 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578146] RIP: >>> 0010:[<ffffffff81338cbb>] =A0[<ffffffff81338cbb>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578172] RSP: >>> 0018:ffff88023ea9dcc8 =A0EFLAGS: 00010246 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578189] RAX: 00000000000000ff >>> RBX: ffff8800b8643228 RCX: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578210] RDX: ffff88023ea9dd04 >>> RSI: ffff88023ea9dd38 RDI: 0000000000000006 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578230] RBP: 0000000037610000 >>> R08: ffffffff81338c90 R09: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578251] R10: 0000000000000019 >>> R11: 0000000000000001 R12: ffff8800b8643380 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578272] R13: ffff8800b8643258 >>> R14: 00007fff806f1f00 R15: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578293] FS: >>> 00007f823d7ed700(0000) GS:ffff8800bf540000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578317] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 0000000080050033 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578334] CR2: 0000000037610050 >>> CR3: 000000023dcef000 CR4: 00000000000006e0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578356] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578377] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578398] Process tar (pid: 8285, >>> threadinfo ffff88023ea9c000, task ffff88023e8b9d40) >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578421] Stack: >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578428] =A0000000013d096000 >>> ffff88023ed84800 ffff88023ea9c000 0000000000000002 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578458] =A0ffffffffffffffff >>> ffffffff810e3b1a 0000000000000001 000000061e1d5240 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578486] =A0fffffffffffffffb >>> ffffffff810e3d5e ffff88010f383000 0000001ab86cb908 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578514] Call Trace: >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578525] =A0[<ffffffff810e3b1a>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578544] =A0[<ffffffff810e3d5e>] = ? >>> __cleancache_flush_inode+0x3e/0x70 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578565] =A0[<ffffffff810b0ed2>] = ? >>> truncate_inode_pages_range+0x42/0x440 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578586] =A0[<ffffffff81338451>] = ? >>> btrfs_tree_unlock+0x41/0x50 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578605] =A0[<ffffffff812e4ed5>] = ? >>> btrfs_release_path+0x15/0x70 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578624] =A0[<ffffffff8130bf29>] = ? >>> btrfs_run_delayed_iputs+0x49/0x120 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578644] =A0[<ffffffff813107e7>] = ? >>> btrfs_evict_inode+0x27/0x1e0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578663] =A0[<ffffffff810fc3aa>] = ? >>> evict+0x1a/0xa0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578678] =A0[<ffffffff810fc6bd>] = ? >>> iput+0x1cd/0x2b0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578694] =A0[<ffffffff810f266f>] = ? >>> do_unlinkat+0x12f/0x1d0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578712] =A0[<ffffffff810027bb>] = ? >>> system_call_fastpath+0x16/0x1b >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578730] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578986] RIP =A0[<ffffffff81338cb= b>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579081] =A0RSP <ffff88023ea9dcc8= > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579093] CR2: 0000000037610050 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.587513] ---[ end trace >>> c596b12e66c0b360 ]--- >>> >>> >>> for reference I've pasted it to pastebin.com: >>> >>> "2.6.37_zcache_V2.patch" >>> http://pastebin.com/cVSkwQ6M >>> >>> >>> >>> >>> >>> after the reboot I had forgotten to not mount the btrfs volume and it >>> threw a similar error-message again and remounted several partitions >>> read-only (including the system partition) >>> the partition with btrfs (/usr/gentoo) couldn't be unmounted since the >>> umount process kind of hang >>> >>> so here's the error message after a reboot (might not be accurate or >>> kind of "skewed" since other patches are included (io-less dirty >>> throttling, PATCH] fix (latent?) memory corruption in >>> btrfs_encode_fh() and latest changes for btrfs)) but might help to get >>> some more evidence: >>> >>> >>> Feb 14 02:05:46 lupus kernel: [ =A0 63.922648] device fsid >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 13 >>> /dev/mapper/portage >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.047118] btrfs: unlinked 1 orphan= s >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.051956] zcache: created ephemera= l >>> tmem pool, id=3D3 >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801364] hub 2-1:1.0: hub_suspend >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801376] usb 2-1: unlink >>> qh256-0001/ffff88023fefd180 start 1 [1/0 us] >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801559] usb 2-1: usb auto-suspen= d >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797929] hub 2-0:1.0: hub_suspend >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797939] usb usb2: bus auto-suspe= nd >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797942] ehci_hcd 0000:00:1d.0: >>> suspend root hub >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050493] BUG: unable to handle >>> kernel paging request at 0000030341ed0050 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050670] IP: [<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050807] PGD 0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050929] Oops: 0000 [#1] PREEMPT = SMP >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051223] last sysfs file: >>> /sys/module/pcie_aspm/parameters/policy >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051365] CPU 6 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051411] Modules linked in: >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack xt_string >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp e1000e >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >>> usb_storage ehci_hcd [last unloaded: tg3] >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054694] >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054776] Pid: 7962, comm: umount >>> Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower G3710 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054912] RIP: >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055084] RSP: >>> 0018:ffff88023c77d6f8 =A0EFLAGS: 00010246 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055173] RAX: 00000000000000ff >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055265] RDX: ffff88023c77d734 >>> RSI: ffff88023c77d768 RDI: 0000000000000006 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055357] RBP: 0000030341ed0000 >>> R08: ffffffff8133eef0 R09: ffff88023c77d8d8 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055448] R10: 0000000000000003 >>> R11: 0000000000000001 R12: 00000000ffffffff >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055540] R13: ffff88023cde0030 >>> R14: ffffea0007dd39f0 R15: 0000000000000001 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055633] FS: >>> 00007fb1cad04760(0000) GS:ffff8800bf580000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055762] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 000000008005003b >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055851] CR2: 0000030341ed0050 >>> CR3: 000000023c7d5000 CR4: 00000000000006e0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055943] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056035] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056128] Process umount (pid: >>> 7962, threadinfo ffff88023c77c000, task ffff88023c7a4260) >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056257] Stack: >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056338] =A00000000000000000 >>> 0000000000000002 ffff880200000000 0000000000000003 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056630] =A0ffffea0007dd39f0 >>> ffffffff810e6aaa ffff880200000041 0000000600000246 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056922] =A0ffff88023cdcd300 >>> ffffffff810e6b3a 0000000000000001 ffffffff8132bb7c >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057213] Call Trace: >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057301] =A0[<ffffffff810e6aaa>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057393] =A0[<ffffffff810e6b3a>] = ? >>> __cleancache_get_page+0x7a/0xd0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057487] =A0[<ffffffff8132bb7c>] = ? >>> merge_state+0x7c/0x150 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057579] =A0[<ffffffff8132e4de>] = ? >>> __extent_read_full_page+0x52e/0x710 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057673] =A0[<ffffffff813bdea4>] = ? >>> rb_insert_color+0xa4/0x140 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057766] =A0[<ffffffff8134b0b6>] = ? >>> tree_insert+0x86/0x1e0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057859] =A0[<ffffffff81058c73>] = ? >>> lock_timer_base.clone.22+0x33/0x70 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058004] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058097] =A0[<ffffffff81330b21>] = ? >>> read_extent_buffer_pages+0x2d1/0x470 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058191] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058283] =A0[<ffffffff8130674d>] = ? >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058415] =A0[<ffffffff813076f9>] = ? >>> read_tree_block+0x39/0x60 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058508] =A0[<ffffffff812ed5e6>] = ? >>> read_block_for_search.clone.40+0x116/0x410 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058638] =A0[<ffffffff812eb228>] = ? >>> btrfs_cow_block+0x118/0x2b0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058731] =A0[<ffffffff812f0bc7>] = ? >>> btrfs_search_slot+0x307/0xa00 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058823] =A0[<ffffffff812f6b18>] = ? >>> lookup_inline_extent_backref+0x98/0x4a0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058919] =A0[<ffffffff810e33d7>] = ? >>> kmem_cache_alloc+0x87/0xa0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059032] =A0[<ffffffff812f891c>] = ? >>> __btrfs_free_extent+0xcc/0x6f0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059125] =A0[<ffffffff812fc4cf>] = ? >>> run_clustered_refs+0x39f/0x880 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059220] =A0[<ffffffff810b1f98>] = ? >>> pagevec_lookup_tag+0x18/0x20 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059312] =A0[<ffffffff810a7c81>] = ? >>> filemap_fdatawait_range+0x91/0x180 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059405] =A0[<ffffffff812fca77>] = ? >>> btrfs_run_delayed_refs+0xc7/0x220 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059498] =A0[<ffffffff8130c29c>] = ? >>> btrfs_commit_transaction+0x7c/0x760 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059591] =A0[<ffffffff81067ea0>] = ? >>> autoremove_wake_function+0x0/0x30 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059683] =A0[<ffffffff8130cdef>] = ? >>> start_transaction+0x1bf/0x270 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059775] =A0[<ffffffff8110e96a>] = ? >>> __sync_filesystem+0x5a/0x90 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059867] =A0[<ffffffff810eae8d>] = ? >>> generic_shutdown_super+0x2d/0x100 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059960] =A0[<ffffffff810eafb9>] = ? >>> kill_anon_super+0x9/0x50 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060051] =A0[<ffffffff810eb266>] = ? >>> deactivate_locked_super+0x26/0x80 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060144] =A0[<ffffffff811043ea>] = ? >>> sys_umount+0x7a/0x390 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060235] =A0[<ffffffff810027bb>] = ? >>> system_call_fastpath+0x16/0x1b >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060325] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063170] RIP =A0[<ffffffff8133ef1= b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063302] =A0RSP <ffff88023c77d6f8= > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063386] CR2: 0000030341ed0050 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063528] ---[ end trace >>> 3313552d105b1535 ]--- >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.961960] BUG: unable to handle >>> kernel paging request at 0000030341ed0050 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962171] IP: [<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962307] PGD 0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962430] Oops: 0000 [#2] PREEMPT = SMP >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962637] last sysfs file: >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962766] CPU 5 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962812] Modules linked in: >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack xt_string >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp e1000e >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >>> usb_storage ehci_hcd [last unloaded: tg3] >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966044] >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966127] Pid: 7915, comm: >>> btrfs-transacti Tainted: G =A0 =A0 =A0D =A0 =A0 2.6.37-plus_v16_zcache = #4 >>> FMP55/ipower G3710 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966266] RIP: >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966440] RSP: >>> 0018:ffff88023c63b6e0 =A0EFLAGS: 00010246 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966528] RAX: 00000000000000ff >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966620] RDX: ffff88023c63b71c >>> RSI: ffff88023c63b750 RDI: 0000000000000006 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966713] RBP: 0000030341ed0000 >>> R08: ffffffff8133eef0 R09: ffff88023c63b8c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966805] R10: 0000000000000003 >>> R11: 0000000000000001 R12: 00000000ffffffff >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966897] R13: ffff88023cde0030 >>> R14: ffffea0007d59bc8 R15: 0000000000000001 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966990] FS: >>> 0000000000000000(0000) GS:ffff8800bf540000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967120] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 000000008005003b >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967209] CR2: 0000030341ed0050 >>> CR3: 0000000001c27000 CR4: 00000000000006e0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967302] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967394] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967500] Process btrfs-transacti >>> (pid: 7915, threadinfo ffff88023c63a000, task ffff88023c7a1620) >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967630] Stack: >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967711] =A00000000000000000 >>> 0000000000000002 0000000000000000 0000000000000003 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968057] =A0ffffea0007d59bc8 >>> ffffffff810e6aaa 0000000000000041 0000000600000002 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968348] =A00000000000000000 >>> ffffffff810e6b3a 0000000000000001 ffffffff00000001 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968639] Call Trace: >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968728] =A0[<ffffffff810e6aaa>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968820] =A0[<ffffffff810e6b3a>] = ? >>> __cleancache_get_page+0x7a/0xd0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968914] =A0[<ffffffff8132e4de>] = ? >>> __extent_read_full_page+0x52e/0x710 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969008] =A0[<ffffffff812f3f93>] = ? >>> update_reserved_bytes+0xb3/0x140 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969102] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969193] =A0[<ffffffff8132bb7c>] = ? >>> merge_state+0x7c/0x150 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969285] =A0[<ffffffff81330b21>] = ? >>> read_extent_buffer_pages+0x2d1/0x470 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969378] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969470] =A0[<ffffffff8130674d>] = ? >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969602] =A0[<ffffffff813076f9>] = ? >>> read_tree_block+0x39/0x60 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969694] =A0[<ffffffff812ed5e6>] = ? >>> read_block_for_search.clone.40+0x116/0x410 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969878] =A0[<ffffffff812f0bc7>] = ? >>> btrfs_search_slot+0x307/0xa00 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969970] =A0[<ffffffff812f6b18>] = ? >>> lookup_inline_extent_backref+0x98/0x4a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970065] =A0[<ffffffff810e33d7>] = ? >>> kmem_cache_alloc+0x87/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970157] =A0[<ffffffff812f891c>] = ? >>> __btrfs_free_extent+0xcc/0x6f0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970249] =A0[<ffffffff812f8434>] = ? >>> update_block_group.clone.62+0xc4/0x280 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970343] =A0[<ffffffff812fc4cf>] = ? >>> run_clustered_refs+0x39f/0x880 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970436] =A0[<ffffffff812fca77>] = ? >>> btrfs_run_delayed_refs+0xc7/0x220 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970529] =A0[<ffffffff810e15f9>] = ? >>> new_slab+0x169/0x1f0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970619] =A0[<ffffffff8130c29c>] = ? >>> btrfs_commit_transaction+0x7c/0x760 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970713] =A0[<ffffffff81067ea0>] = ? >>> autoremove_wake_function+0x0/0x30 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970806] =A0[<ffffffff81305bc3>] = ? >>> transaction_kthread+0x283/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970898] =A0[<ffffffff81305940>] = ? >>> transaction_kthread+0x0/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970990] =A0[<ffffffff81305940>] = ? >>> transaction_kthread+0x0/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971083] =A0[<ffffffff81067a16>] = ? >>> kthread+0x96/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971174] =A0[<ffffffff81003514>] = ? >>> kernel_thread_helper+0x4/0x10 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971266] =A0[<ffffffff81067980>] = ? >>> kthread+0x0/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971355] =A0[<ffffffff81003510>] = ? >>> kernel_thread_helper+0x0/0x10 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971444] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974280] RIP =A0[<ffffffff8133ef1= b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974412] =A0RSP <ffff88023c63b6e0= > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974497] CR2: 0000030341ed0050 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974599] ---[ end trace >>> 3313552d105b1536 ]--- >>> Feb 14 02:07:04 lupus kernel: [ =A0141.906124] zcache: destroyed pool i= d=3D2 >>> Feb 14 02:07:17 lupus kernel: [ =A0154.783358] SysRq : Keyboard mode se= t >>> to system default >>> Feb 14 02:07:18 lupus kernel: [ =A0155.486147] SysRq : Terminate All Ta= sks >>> >>> >>> That's all for now >>> >>> Thanks & Regards >>> >>> Matt >>> >> >> (leaving out several folks from the CC to avoid spamming - if I left >> out someone wrongfully please re-add) >> >> running an addr2line reveals: >> >> >> addr2line -e /usr/src/linux-2.6.37_vanilla/vmlinux -i ffffffff81338cbb >> export.c:0 >> >> >> hope that helps >> >> >> Regards >> >> Matt >> > > > ok, maybe it's useful to have some more details how to reproduce it as > easily as possible and about my configuration: > > preparation steps: > > 1) 2.6.37 vanilla kernel with the mentioned changes to zram (and > xvmalloc), zcache (+ fixes) > > configuration specifics: > > CONFIG_CRYPTO_PCRYPT=3Dy > > 2) on a non-btrfs partition or with zcache disable: get a > portage-tarball comparable to mine download from one of the > gentoo-mirrors (http://www.gentoo.org/main/en/mirrors2.xml), e.g. the > University of California: > ftp://ftp.ucsb.edu/pub/mirrors/linux/gentoo/snapshots/ > > (weighing only around 40 MiB) then > > get that tarball to a decent size by adding the latest changes from a > rsync-mirror (http://www.gentoo.org/main/en/mirrors-rsync.xml) > > I can also upload my specific tarball weighing at 1.7 GiB at request - > just point me a place to drop it > > 3) creating a tar.bzip2 ball (preferably via 7z or pbzip2 so that it > can be extracted later in parallel to create some pressure) > > > Hardware: > core i7 860 (4 cores - ht -> 8 threads), 8 GiB of RAM, > underlying harddrive is a Samsung HD203WI, NCQ is disabled > (queue_depth set to "1"), using CFQ as i/o scheduler > > echo "13" > /proc/sys/vm/page-cluster > echo "60" > /proc/sys/vm/swappiness > echo "3000" > /proc/sys/vm/dirty_expire_centisecs > echo "1500" =A0> /proc/sys/vm/dirty_writeback_centisecs > echo "15" > /proc/sys/vm/dirty_background_ratio > echo "50" =A0 > /proc/sys/vm/dirty_ratio > echo "50" > /proc/sys/vm/vfs_cache_pressure > echo "32768" > /proc/sys/vm/min_free_kbytes > > for i in /sys/block/sd*; do > =A0 =A0 =A0 =A0 /bin/echo "4096" > =A0$i/queue/read_ahead_kb > =A0 =A0 =A0 =A0 /bin/echo "64" > =A0$i/queue/max_sectors_kb > =A0 =A0 =A0 =A0 /bin/echo "1" =A0 > =A0$i/queue/rq_affinity > done > > nr_requests is set to "1024" > > slice_sync to "150" > fifo_expire_sync to "50" > > echo 4096 > /sys/class/bdi/default/read_ahead_kb > > > steps to get the "result": > > 1) cryptsetup-partition with aes or twofish-encryption (512 bits) > [using cryptsetup 1.1.3* or 1.2*] > > 2) on top of that btrfs > > 3) extracting the tarball (usually I'm adding a "time" in front to see > how long it took): time (7z e -so -tbzip2 -mmt=3D5 > /system/portage_backup_022011.tbz2 | tar > -xp -C /usr/gentoo/) > > > "result": > > 1) it seems to take several seconds or even minutes until that BUG > message gets shown so maybe some memory (or other kind of subsystem) > pressure is needed to trigger it > > > I hope that's useful in reproducing the BUG > > > Thanks & Regards > > Matt > *bump* adding: Li Zefan, Miao Xie, Yan Zheng, Dan Rosenberg, Josef Bacik and the btrfs mailing list to CC -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <AANLkTim6n9QqEYr32RPS1Ne0aKpDEf1ZNiNGz2ZvS-EO@mail.gmail.com>]
* Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression [not found] ` <AANLkTim6n9QqEYr32RPS1Ne0aKpDEf1ZNiNGz2ZvS-EO@mail.gmail.com> @ 2011-02-16 0:12 ` Matt 2011-02-16 1:27 ` Dan Magenheimer 0 siblings, 1 reply; 6+ messages in thread From: Matt @ 2011-02-16 0:12 UTC (permalink / raw) To: Minchan Kim Cc: Dan Magenheimer, gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan On Mon, Feb 14, 2011 at 4:35 AM, Minchan Kim <minchan.kim@gmail.com> wrote: > On Mon, Feb 14, 2011 at 10:29 AM, Matt <jackdachef@gmail.com> wrote: >> On Mon, Feb 14, 2011 at 1:24 AM, Matt <jackdachef@gmail.com> wrote: >>> On Mon, Feb 14, 2011 at 12:08 AM, Matt <jackdachef@gmail.com> wrote: >>>> On Wed, Feb 9, 2011 at 1:03 AM, Dan Magenheimer >>>> <dan.magenheimer@oracle.com> wrote: >>>> [snip] >>>>> >>>>> If I've missed anything important, please let me know! >>>>> >>>>> Thanks again! >>>>> Dan >>>>> >>>> >>>> Hi Dan, >>>> >>>> thank you so much for answering my email in such detail ! >>>> >>>> I shall pick up on that mail in my next email sending to the mailing l= ist :) >>>> >>>> >>>> currently I've got a problem with btrfs which seems to get triggered >>>> by cleancache get-operations: >>>> >>>> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297377] device fsid >>>> 354120c992a00761-5fa07d400126a895 devid 1 transid 7 >>>> /dev/mapper/portage >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297698] btrfs: enabling disk spac= e caching >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297700] btrfs: force lzo compress= ion >>>> Feb 14 00:37:19 lupus kernel: [ 2831.315844] zcache: created ephemeral >>>> tmem pool, id=3D3 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853188] BUG: unable to handle >>>> kernel paging request at 0000000001400050 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853219] IP: [<ffffffff8133ef1b>] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853242] PGD 0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853251] Oops: 0000 [#1] PREEMPT S= MP >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853275] last sysfs file: >>>> /sys/devices/platform/coretemp.3/temp1_input >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853295] CPU 4 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853303] Modules linked in: radeon >>>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >>>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >>>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp >>>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >>>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack xt_mark >>>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables >>>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss snd_seq_midi_event >>>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi >>>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm >>>> snd_timer snd soundcore i2c_i801 wmi e1000e shpchp snd_page_alloc >>>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >>>> ehci_hcd [last unloaded: tg3] >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853682] >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853690] Pid: 11394, comm: >>>> btrfs-transacti Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower >>>> G3710 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853725] RIP: >>>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853751] RSP: >>>> 0018:ffff880129a11b00 =A0EFLAGS: 00010246 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853767] RAX: 00000000000000ff >>>> RBX: ffff88014a1ce628 RCX: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853788] RDX: ffff880129a11b3c >>>> RSI: ffff880129a11b70 RDI: 0000000000000006 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853808] RBP: 0000000001400000 >>>> R08: ffffffff8133eef0 R09: ffff880129a11c68 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853829] R10: 0000000000000001 >>>> R11: 0000000000000001 R12: ffff88014a1ce780 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853849] R13: ffff88021fefc000 >>>> R14: ffff88021fef9000 R15: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853870] FS: >>>> 0000000000000000(0000) GS:ffff8800bf500000(0000) >>>> knlGS:0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853894] CS: =A00010 DS: 0000 ES: >>>> 0000 CR0: 000000008005003b >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853911] CR2: 0000000001400050 >>>> CR3: 0000000001c27000 CR4: 00000000000006e0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853932] DR0: 0000000000000000 >>>> DR1: 0000000000000000 DR2: 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853952] DR3: 0000000000000000 >>>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853973] Process btrfs-transacti >>>> (pid: 11394, threadinfo ffff880129a10000, task ffff880202e4ac40) >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853999] Stack: >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854006] =A0ffff880129a11b50 >>>> ffff880000000003 ffff88003c60a098 0000000000000003 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854035] =A0ffffffffffffffff >>>> ffffffff810e6aaa 0000000000000000 0000000602e4ac40 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854063] =A0ffffffff8133e3f0 >>>> ffffffff810e6cee 0000000000001000 0000000000000000 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854092] Call Trace: >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854103] =A0[<ffffffff810e6aaa>] ? >>>> cleancache_get_key+0x4a/0x60 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854122] =A0[<ffffffff8133e3f0>] ? >>>> btrfs_wake_function+0x0/0x20 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854140] =A0[<ffffffff810e6cee>] ? >>>> __cleancache_flush_inode+0x3e/0x70 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854161] =A0[<ffffffff810b34d2>] ? >>>> truncate_inode_pages_range+0x42/0x440 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854182] =A0[<ffffffff812f115e>] ? >>>> btrfs_search_slot+0x89e/0xa00 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854201] =A0[<ffffffff810c3a45>] ? >>>> unmap_mapping_range+0xc5/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854220] =A0[<ffffffff810b3930>] ? >>>> truncate_pagecache+0x40/0x70 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854240] =A0[<ffffffff813458b1>] ? >>>> btrfs_truncate_free_space_cache+0x81/0xe0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854261] =A0[<ffffffff812fce15>] ? >>>> btrfs_write_dirty_block_groups+0x245/0x500 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854283] =A0[<ffffffff812fcb6a>] ? >>>> btrfs_run_delayed_refs+0x1ba/0x220 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854304] =A0[<ffffffff8130afff>] ? >>>> commit_cowonly_roots+0xff/0x1d0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854323] =A0[<ffffffff8130c583>] ? >>>> btrfs_commit_transaction+0x363/0x760 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854344] =A0[<ffffffff81067ea0>] ? >>>> autoremove_wake_function+0x0/0x30 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854364] =A0[<ffffffff81305bc3>] ? >>>> transaction_kthread+0x283/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854383] =A0[<ffffffff81305940>] ? >>>> transaction_kthread+0x0/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854401] =A0[<ffffffff81305940>] ? >>>> transaction_kthread+0x0/0x2a0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854420] =A0[<ffffffff81067a16>] ? >>>> kthread+0x96/0xa0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854437] =A0[<ffffffff81003514>] ? >>>> kernel_thread_helper+0x4/0x10 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854455] =A0[<ffffffff81067980>] ? >>>> kthread+0x0/0xa0 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854471] =A0[<ffffffff81003510>] ? >>>> kernel_thread_helper+0x0/0x10 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854488] Code: 55 b8 ff 00 00 00 >>>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854742] RIP =A0[<ffffffff8133ef1b= >] >>>> btrfs_encode_fh+0x2b/0x120 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854762] =A0RSP <ffff880129a11b00> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854773] CR2: 0000000001400050 >>>> Feb 14 00:39:20 lupus kernel: [ 2951.860906] ---[ end trace >>>> f831c5ceeaa49287 ]--- >>>> >>>> in my case I had compress-force with lzo and disk_cache enabled >>>> >>>> >>>> another user of the kernel I'm currently running has had the same >>>> problem with zcache >>>> (http://forums.gentoo.org/viewtopic-p-6571799.html#6571799) >>>> >>>> (looks like in his case compression and any other fancy additional >>>> features weren't enabled) >>>> >>>> >>>> changes made by this kernel or patchset to btrfs are from >>>> * io-less dirty throttling patchset (44 patches) >>>> * zcache V2 ("[PATCH] staging: zcache: fix memory leak" should be >>>> applied in both cases) >>>> * PATCH] fix (latent?) memory corruption in btrfs_encode_fh() >>>> * btrfs-unstable changes to state of >>>> 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 (so practically equals btrfs >>>> from 2.6.38-rc4+) >>>> >>>> I haven't tried downgrading to vanilla 2.6.37 with zcache only, yet, >>>> >>>> but kind of upgraded btrfs to the latest state of the btrfs-unstable >>>> repository (http://git.eu.kernel.org/?p=3Dlinux/kernel/git/mason/btrfs= -unstable.git;a=3Dsummary) >>>> namely 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 >>>> >>>> this also didn't help and seemed to produce the same error-message >>>> >>>> so to summarize: >>>> >>>> 1) error message appearing with all 4 patchsets applied changing >>>> btrfs-code and compress-force=3Dlzo and disk_cache enabled >>>> >>>> 2) error message appearing with default mount-options and btrfs from >>>> 2.6.37 and changes for zcache & io-less dirty throttling patchset >>>> applied (first 2 patch(sets)) from list) >>>> >>>> >>>> in my case I tried to extract / play back a 1.7 GiB tarball of my >>>> portage-directory (lots of small files and some tar.bzip2 archives) >>>> via pbzip2 or 7z when the error happened and the message was shown >>>> >>>> Due to KMS sound (webradio streaming) was still running but I couldn't >>>> continue work (X switching to kernel output) so I did the magic sysrq >>>> combo (reisub) >>>> >>>> >>>> Does that BUG message ring a bell for anyone ? >>>> >>>> (if I should leave out anyone from the CC in the next emails or >>>> future, please holler - I don't want to spam your inboxes) >>>> >>>> Thanks >>>> >>>> Matt >>>> >>> >>> >>> OK, >>> >>> here's the output of a kernel - >>> >>> staying as close to vanilla (2.6.37) as the current situation allows >>> (only including some corruption or leak fixes for zram & zcache and >>> "zram_xvmalloc: 64K page fixes and optimizations" (and 2 reiserfs >>> fixes)): >>> >>> so in total the following patches are included in this new kernel >>> (2.6.37-zcache): >>> >>> zram changes: >>> 1 zram: Fix sparse warning 'Using plain integer as NULL pointer' >>> 2 [PATCH] zram: fix data corruption issue >>> 3 [PATCH 0/7][v2] zram_xvmalloc: 64K page fixes and optimizations >>> >>> zcache: >>> 1 zcache-linux-2.6.37-110205 >>> 2 [PATCH] staging: zcache: fix memory leak >>> 3 [PATCH] zcache: Fix build error when sysfs is not defined >>> >>> reiserfs: >>> 1 [PATCH] reiserfs: Make sure va_end() is always called after >>> 2 [patch] reiserfs: potential ERR_PTR dereference >>> >>> >>> the same procedure: >>> >>> trying to extract the mentioned portage-tarball: >>> >>> time (7z e -so -tbzip2 -mmt=3D5 /system/portage_backup_022011.tbz2 | ta= r >>> -xp -C /usr/gentoo/) >>> >>> >>> this hopefully should make it easier to track down the problem: >>> >>> >>> Feb 14 01:59:59 lupus kernel: [ =A0364.777143] device fsid >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 7 >>> /dev/mapper/portage >>> Feb 14 01:59:59 lupus kernel: [ =A0364.844994] zcache: created ephemera= l >>> tmem pool, id=3D2 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577573] BUG: unable to handle >>> kernel paging request at 0000000037610050 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577605] IP: [<ffffffff81338cbb>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577630] PGD 0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577640] Oops: 0000 [#1] PREEMPT = SMP >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577665] last sysfs file: >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577693] CPU 5 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577701] Modules linked in: radeo= n >>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp >>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack xt_mark >>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables >>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss snd_seq_midi_event >>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi >>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm >>> snd_timer snd e1000e soundcore i2c_i801 shpchp snd_page_alloc wmi >>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >>> ehci_hcd [last unloaded: tg3] >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578114] >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578124] Pid: 8285, comm: tar Not >>> tainted 2.6.37-zcache #2 FMP55/ipower G3710 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578146] RIP: >>> 0010:[<ffffffff81338cbb>] =A0[<ffffffff81338cbb>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578172] RSP: >>> 0018:ffff88023ea9dcc8 =A0EFLAGS: 00010246 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578189] RAX: 00000000000000ff >>> RBX: ffff8800b8643228 RCX: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578210] RDX: ffff88023ea9dd04 >>> RSI: ffff88023ea9dd38 RDI: 0000000000000006 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578230] RBP: 0000000037610000 >>> R08: ffffffff81338c90 R09: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578251] R10: 0000000000000019 >>> R11: 0000000000000001 R12: ffff8800b8643380 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578272] R13: ffff8800b8643258 >>> R14: 00007fff806f1f00 R15: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578293] FS: >>> 00007f823d7ed700(0000) GS:ffff8800bf540000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578317] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 0000000080050033 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578334] CR2: 0000000037610050 >>> CR3: 000000023dcef000 CR4: 00000000000006e0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578356] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578377] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578398] Process tar (pid: 8285, >>> threadinfo ffff88023ea9c000, task ffff88023e8b9d40) >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578421] Stack: >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578428] =A0000000013d096000 >>> ffff88023ed84800 ffff88023ea9c000 0000000000000002 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578458] =A0ffffffffffffffff >>> ffffffff810e3b1a 0000000000000001 000000061e1d5240 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578486] =A0fffffffffffffffb >>> ffffffff810e3d5e ffff88010f383000 0000001ab86cb908 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578514] Call Trace: >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578525] =A0[<ffffffff810e3b1a>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578544] =A0[<ffffffff810e3d5e>] = ? >>> __cleancache_flush_inode+0x3e/0x70 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578565] =A0[<ffffffff810b0ed2>] = ? >>> truncate_inode_pages_range+0x42/0x440 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578586] =A0[<ffffffff81338451>] = ? >>> btrfs_tree_unlock+0x41/0x50 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578605] =A0[<ffffffff812e4ed5>] = ? >>> btrfs_release_path+0x15/0x70 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578624] =A0[<ffffffff8130bf29>] = ? >>> btrfs_run_delayed_iputs+0x49/0x120 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578644] =A0[<ffffffff813107e7>] = ? >>> btrfs_evict_inode+0x27/0x1e0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578663] =A0[<ffffffff810fc3aa>] = ? >>> evict+0x1a/0xa0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578678] =A0[<ffffffff810fc6bd>] = ? >>> iput+0x1cd/0x2b0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578694] =A0[<ffffffff810f266f>] = ? >>> do_unlinkat+0x12f/0x1d0 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578712] =A0[<ffffffff810027bb>] = ? >>> system_call_fastpath+0x16/0x1b >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578730] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578986] RIP =A0[<ffffffff81338cb= b>] >>> btrfs_encode_fh+0x2b/0x110 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579081] =A0RSP <ffff88023ea9dcc8= > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579093] CR2: 0000000037610050 >>> Feb 14 02:02:49 lupus kernel: [ =A0534.587513] ---[ end trace >>> c596b12e66c0b360 ]--- >>> >>> >>> for reference I've pasted it to pastebin.com: >>> >>> "2.6.37_zcache_V2.patch" >>> http://pastebin.com/cVSkwQ6M >>> >>> >>> >>> >>> >>> after the reboot I had forgotten to not mount the btrfs volume and it >>> threw a similar error-message again and remounted several partitions >>> read-only (including the system partition) >>> the partition with btrfs (/usr/gentoo) couldn't be unmounted since the >>> umount process kind of hang >>> >>> so here's the error message after a reboot (might not be accurate or >>> kind of "skewed" since other patches are included (io-less dirty >>> throttling, PATCH] fix (latent?) memory corruption in >>> btrfs_encode_fh() and latest changes for btrfs)) but might help to get >>> some more evidence: >>> >>> >>> Feb 14 02:05:46 lupus kernel: [ =A0 63.922648] device fsid >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 13 >>> /dev/mapper/portage >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.047118] btrfs: unlinked 1 orphan= s >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.051956] zcache: created ephemera= l >>> tmem pool, id=3D3 >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801364] hub 2-1:1.0: hub_suspend >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801376] usb 2-1: unlink >>> qh256-0001/ffff88023fefd180 start 1 [1/0 us] >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801559] usb 2-1: usb auto-suspen= d >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797929] hub 2-0:1.0: hub_suspend >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797939] usb usb2: bus auto-suspe= nd >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797942] ehci_hcd 0000:00:1d.0: >>> suspend root hub >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050493] BUG: unable to handle >>> kernel paging request at 0000030341ed0050 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050670] IP: [<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050807] PGD 0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050929] Oops: 0000 [#1] PREEMPT = SMP >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051223] last sysfs file: >>> /sys/module/pcie_aspm/parameters/policy >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051365] CPU 6 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051411] Modules linked in: >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack xt_string >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp e1000e >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >>> usb_storage ehci_hcd [last unloaded: tg3] >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054694] >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054776] Pid: 7962, comm: umount >>> Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower G3710 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054912] RIP: >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055084] RSP: >>> 0018:ffff88023c77d6f8 =A0EFLAGS: 00010246 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055173] RAX: 00000000000000ff >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055265] RDX: ffff88023c77d734 >>> RSI: ffff88023c77d768 RDI: 0000000000000006 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055357] RBP: 0000030341ed0000 >>> R08: ffffffff8133eef0 R09: ffff88023c77d8d8 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055448] R10: 0000000000000003 >>> R11: 0000000000000001 R12: 00000000ffffffff >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055540] R13: ffff88023cde0030 >>> R14: ffffea0007dd39f0 R15: 0000000000000001 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055633] FS: >>> 00007fb1cad04760(0000) GS:ffff8800bf580000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055762] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 000000008005003b >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055851] CR2: 0000030341ed0050 >>> CR3: 000000023c7d5000 CR4: 00000000000006e0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055943] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056035] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056128] Process umount (pid: >>> 7962, threadinfo ffff88023c77c000, task ffff88023c7a4260) >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056257] Stack: >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056338] =A00000000000000000 >>> 0000000000000002 ffff880200000000 0000000000000003 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056630] =A0ffffea0007dd39f0 >>> ffffffff810e6aaa ffff880200000041 0000000600000246 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056922] =A0ffff88023cdcd300 >>> ffffffff810e6b3a 0000000000000001 ffffffff8132bb7c >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057213] Call Trace: >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057301] =A0[<ffffffff810e6aaa>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057393] =A0[<ffffffff810e6b3a>] = ? >>> __cleancache_get_page+0x7a/0xd0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057487] =A0[<ffffffff8132bb7c>] = ? >>> merge_state+0x7c/0x150 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057579] =A0[<ffffffff8132e4de>] = ? >>> __extent_read_full_page+0x52e/0x710 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057673] =A0[<ffffffff813bdea4>] = ? >>> rb_insert_color+0xa4/0x140 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057766] =A0[<ffffffff8134b0b6>] = ? >>> tree_insert+0x86/0x1e0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057859] =A0[<ffffffff81058c73>] = ? >>> lock_timer_base.clone.22+0x33/0x70 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058004] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058097] =A0[<ffffffff81330b21>] = ? >>> read_extent_buffer_pages+0x2d1/0x470 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058191] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058283] =A0[<ffffffff8130674d>] = ? >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058415] =A0[<ffffffff813076f9>] = ? >>> read_tree_block+0x39/0x60 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058508] =A0[<ffffffff812ed5e6>] = ? >>> read_block_for_search.clone.40+0x116/0x410 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058638] =A0[<ffffffff812eb228>] = ? >>> btrfs_cow_block+0x118/0x2b0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058731] =A0[<ffffffff812f0bc7>] = ? >>> btrfs_search_slot+0x307/0xa00 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058823] =A0[<ffffffff812f6b18>] = ? >>> lookup_inline_extent_backref+0x98/0x4a0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058919] =A0[<ffffffff810e33d7>] = ? >>> kmem_cache_alloc+0x87/0xa0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059032] =A0[<ffffffff812f891c>] = ? >>> __btrfs_free_extent+0xcc/0x6f0 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059125] =A0[<ffffffff812fc4cf>] = ? >>> run_clustered_refs+0x39f/0x880 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059220] =A0[<ffffffff810b1f98>] = ? >>> pagevec_lookup_tag+0x18/0x20 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059312] =A0[<ffffffff810a7c81>] = ? >>> filemap_fdatawait_range+0x91/0x180 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059405] =A0[<ffffffff812fca77>] = ? >>> btrfs_run_delayed_refs+0xc7/0x220 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059498] =A0[<ffffffff8130c29c>] = ? >>> btrfs_commit_transaction+0x7c/0x760 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059591] =A0[<ffffffff81067ea0>] = ? >>> autoremove_wake_function+0x0/0x30 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059683] =A0[<ffffffff8130cdef>] = ? >>> start_transaction+0x1bf/0x270 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059775] =A0[<ffffffff8110e96a>] = ? >>> __sync_filesystem+0x5a/0x90 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059867] =A0[<ffffffff810eae8d>] = ? >>> generic_shutdown_super+0x2d/0x100 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059960] =A0[<ffffffff810eafb9>] = ? >>> kill_anon_super+0x9/0x50 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060051] =A0[<ffffffff810eb266>] = ? >>> deactivate_locked_super+0x26/0x80 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060144] =A0[<ffffffff811043ea>] = ? >>> sys_umount+0x7a/0x390 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060235] =A0[<ffffffff810027bb>] = ? >>> system_call_fastpath+0x16/0x1b >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060325] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063170] RIP =A0[<ffffffff8133ef1= b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063302] =A0RSP <ffff88023c77d6f8= > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063386] CR2: 0000030341ed0050 >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063528] ---[ end trace >>> 3313552d105b1535 ]--- >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.961960] BUG: unable to handle >>> kernel paging request at 0000030341ed0050 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962171] IP: [<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962307] PGD 0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962430] Oops: 0000 [#2] PREEMPT = SMP >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962637] last sysfs file: >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962766] CPU 5 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962812] Modules linked in: >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack xt_string >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp e1000e >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >>> usb_storage ehci_hcd [last unloaded: tg3] >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966044] >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966127] Pid: 7915, comm: >>> btrfs-transacti Tainted: G =A0 =A0 =A0D =A0 =A0 2.6.37-plus_v16_zcache = #4 >>> FMP55/ipower G3710 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966266] RIP: >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966440] RSP: >>> 0018:ffff88023c63b6e0 =A0EFLAGS: 00010246 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966528] RAX: 00000000000000ff >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966620] RDX: ffff88023c63b71c >>> RSI: ffff88023c63b750 RDI: 0000000000000006 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966713] RBP: 0000030341ed0000 >>> R08: ffffffff8133eef0 R09: ffff88023c63b8c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966805] R10: 0000000000000003 >>> R11: 0000000000000001 R12: 00000000ffffffff >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966897] R13: ffff88023cde0030 >>> R14: ffffea0007d59bc8 R15: 0000000000000001 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966990] FS: >>> 0000000000000000(0000) GS:ffff8800bf540000(0000) >>> knlGS:0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967120] CS: =A00010 DS: 0000 ES: >>> 0000 CR0: 000000008005003b >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967209] CR2: 0000030341ed0050 >>> CR3: 0000000001c27000 CR4: 00000000000006e0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967302] DR0: 0000000000000000 >>> DR1: 0000000000000000 DR2: 0000000000000000 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967394] DR3: 0000000000000000 >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967500] Process btrfs-transacti >>> (pid: 7915, threadinfo ffff88023c63a000, task ffff88023c7a1620) >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967630] Stack: >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967711] =A00000000000000000 >>> 0000000000000002 0000000000000000 0000000000000003 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968057] =A0ffffea0007d59bc8 >>> ffffffff810e6aaa 0000000000000041 0000000600000002 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968348] =A00000000000000000 >>> ffffffff810e6b3a 0000000000000001 ffffffff00000001 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968639] Call Trace: >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968728] =A0[<ffffffff810e6aaa>] = ? >>> cleancache_get_key+0x4a/0x60 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968820] =A0[<ffffffff810e6b3a>] = ? >>> __cleancache_get_page+0x7a/0xd0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968914] =A0[<ffffffff8132e4de>] = ? >>> __extent_read_full_page+0x52e/0x710 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969008] =A0[<ffffffff812f3f93>] = ? >>> update_reserved_bytes+0xb3/0x140 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969102] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969193] =A0[<ffffffff8132bb7c>] = ? >>> merge_state+0x7c/0x150 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969285] =A0[<ffffffff81330b21>] = ? >>> read_extent_buffer_pages+0x2d1/0x470 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969378] =A0[<ffffffff81305060>] = ? >>> btree_get_extent+0x0/0x1c0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969470] =A0[<ffffffff8130674d>] = ? >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969602] =A0[<ffffffff813076f9>] = ? >>> read_tree_block+0x39/0x60 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969694] =A0[<ffffffff812ed5e6>] = ? >>> read_block_for_search.clone.40+0x116/0x410 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969878] =A0[<ffffffff812f0bc7>] = ? >>> btrfs_search_slot+0x307/0xa00 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969970] =A0[<ffffffff812f6b18>] = ? >>> lookup_inline_extent_backref+0x98/0x4a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970065] =A0[<ffffffff810e33d7>] = ? >>> kmem_cache_alloc+0x87/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970157] =A0[<ffffffff812f891c>] = ? >>> __btrfs_free_extent+0xcc/0x6f0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970249] =A0[<ffffffff812f8434>] = ? >>> update_block_group.clone.62+0xc4/0x280 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970343] =A0[<ffffffff812fc4cf>] = ? >>> run_clustered_refs+0x39f/0x880 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970436] =A0[<ffffffff812fca77>] = ? >>> btrfs_run_delayed_refs+0xc7/0x220 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970529] =A0[<ffffffff810e15f9>] = ? >>> new_slab+0x169/0x1f0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970619] =A0[<ffffffff8130c29c>] = ? >>> btrfs_commit_transaction+0x7c/0x760 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970713] =A0[<ffffffff81067ea0>] = ? >>> autoremove_wake_function+0x0/0x30 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970806] =A0[<ffffffff81305bc3>] = ? >>> transaction_kthread+0x283/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970898] =A0[<ffffffff81305940>] = ? >>> transaction_kthread+0x0/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970990] =A0[<ffffffff81305940>] = ? >>> transaction_kthread+0x0/0x2a0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971083] =A0[<ffffffff81067a16>] = ? >>> kthread+0x96/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971174] =A0[<ffffffff81003514>] = ? >>> kernel_thread_helper+0x4/0x10 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971266] =A0[<ffffffff81067980>] = ? >>> kthread+0x0/0xa0 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971355] =A0[<ffffffff81003510>] = ? >>> kernel_thread_helper+0x0/0x10 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971444] Code: 55 b8 ff 00 00 00 >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 00 >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 00 >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974280] RIP =A0[<ffffffff8133ef1= b>] >>> btrfs_encode_fh+0x2b/0x120 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974412] =A0RSP <ffff88023c63b6e0= > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974497] CR2: 0000030341ed0050 >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974599] ---[ end trace >>> 3313552d105b1536 ]--- >>> Feb 14 02:07:04 lupus kernel: [ =A0141.906124] zcache: destroyed pool i= d=3D2 >>> Feb 14 02:07:17 lupus kernel: [ =A0154.783358] SysRq : Keyboard mode se= t >>> to system default >>> Feb 14 02:07:18 lupus kernel: [ =A0155.486147] SysRq : Terminate All Ta= sks >>> >>> >>> That's all for now >>> >>> Thanks & Regards >>> >>> Matt >>> >> >> (leaving out several folks from the CC to avoid spamming - if I left >> out someone wrongfully please re-add) >> >> running an addr2line reveals: >> >> >> addr2line -e /usr/src/linux-2.6.37_vanilla/vmlinux -i ffffffff81338cbb >> export.c:0 >> >> >> hope that helps >> >> >> Regards >> >> Matt >> > > Just my guessing. I might be wrong. > > __cleancache_flush_inode calls cleancache_get_key with cleancache_filekey= ^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression 2011-02-16 0:12 ` Matt @ 2011-02-16 1:27 ` Dan Magenheimer 2011-02-16 1:58 ` Matt 2011-02-16 4:36 ` Minchan Kim 0 siblings, 2 replies; 6+ messages in thread From: Dan Magenheimer @ 2011-02-16 1:27 UTC (permalink / raw) To: Matt, Minchan Kim Cc: gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan > -----Original Message----- > From: Matt [mailto:jackdachef@gmail.com] > Sent: Tuesday, February 15, 2011 5:12 PM > To: Minchan Kim > Cc: Dan Magenheimer; gregkh@suse.de; Chris Mason; linux- > kernel@vger.kernel.org; linux-mm@kvack.org; ngupta@vflare.org; linux- > btrfs@vger.kernel.org; Josef Bacik; Dan Rosenberg; Yan Zheng; > miaox@cn.fujitsu.com; Li Zefan > Subject: Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page > cache/swap compression >=20 > On Mon, Feb 14, 2011 at 4:35 AM, Minchan Kim <minchan.kim@gmail.com> > wrote: > > On Mon, Feb 14, 2011 at 10:29 AM, Matt <jackdachef@gmail.com> wrote: > >> On Mon, Feb 14, 2011 at 1:24 AM, Matt <jackdachef@gmail.com> wrote: > >>> On Mon, Feb 14, 2011 at 12:08 AM, Matt <jackdachef@gmail.com> > wrote: > >>>> On Wed, Feb 9, 2011 at 1:03 AM, Dan Magenheimer > >>>> <dan.magenheimer@oracle.com> wrote: > >>>> [snip] > >>>>> > >>>>> If I've missed anything important, please let me know! > >>>>> > >>>>> Thanks again! > >>>>> Dan > >>>>> > >>>> > >>>> Hi Dan, > >>>> > >>>> thank you so much for answering my email in such detail ! > >>>> > >>>> I shall pick up on that mail in my next email sending to the > mailing list :) > >>>> > >>>> > >>>> currently I've got a problem with btrfs which seems to get > triggered > >>>> by cleancache get-operations: > >>>> > >>>> > >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297377] device fsid > >>>> 354120c992a00761-5fa07d400126a895 devid 1 transid 7 > >>>> /dev/mapper/portage > >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297698] btrfs: enabling disk > space caching > >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297700] btrfs: force lzo > compression > >>>> Feb 14 00:37:19 lupus kernel: [ 2831.315844] zcache: created > ephemeral > >>>> tmem pool, id=3D3 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853188] BUG: unable to handle > >>>> kernel paging request at 0000000001400050 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853219] IP: > [<ffffffff8133ef1b>] > >>>> btrfs_encode_fh+0x2b/0x120 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853242] PGD 0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853251] Oops: 0000 [#1] > PREEMPT SMP > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853275] last sysfs file: > >>>> /sys/devices/platform/coretemp.3/temp1_input > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853295] CPU 4 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853303] Modules linked in: > radeon > >>>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT > >>>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc > >>>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 > nf_conntrack_ftp > >>>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables > >>>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack > xt_mark > >>>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables > x_tables > >>>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss > snd_seq_midi_event > >>>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss > snd_hda_codec_hdmi > >>>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep > snd_pcm > >>>> snd_timer snd soundcore i2c_i801 wmi e1000e shpchp snd_page_alloc > >>>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage > >>>> ehci_hcd [last unloaded: tg3] > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853682] > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853690] Pid: 11394, comm: > >>>> btrfs-transacti Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower > >>>> G3710 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853725] RIP: > >>>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] > >>>> btrfs_encode_fh+0x2b/0x120 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853751] RSP: > >>>> 0018:ffff880129a11b00 =A0EFLAGS: 00010246 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853767] RAX: 00000000000000ff > >>>> RBX: ffff88014a1ce628 RCX: 0000000000000000 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853788] RDX: ffff880129a11b3c > >>>> RSI: ffff880129a11b70 RDI: 0000000000000006 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853808] RBP: 0000000001400000 > >>>> R08: ffffffff8133eef0 R09: ffff880129a11c68 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853829] R10: 0000000000000001 > >>>> R11: 0000000000000001 R12: ffff88014a1ce780 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853849] R13: ffff88021fefc000 > >>>> R14: ffff88021fef9000 R15: 0000000000000000 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853870] FS: > >>>> 0000000000000000(0000) GS:ffff8800bf500000(0000) > >>>> knlGS:0000000000000000 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853894] CS: =A00010 DS: 0000 > ES: > >>>> 0000 CR0: 000000008005003b > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853911] CR2: 0000000001400050 > >>>> CR3: 0000000001c27000 CR4: 00000000000006e0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853932] DR0: 0000000000000000 > >>>> DR1: 0000000000000000 DR2: 0000000000000000 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853952] DR3: 0000000000000000 > >>>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853973] Process btrfs- > transacti > >>>> (pid: 11394, threadinfo ffff880129a10000, task ffff880202e4ac40) > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853999] Stack: > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854006] =A0ffff880129a11b50 > >>>> ffff880000000003 ffff88003c60a098 0000000000000003 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854035] =A0ffffffffffffffff > >>>> ffffffff810e6aaa 0000000000000000 0000000602e4ac40 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854063] =A0ffffffff8133e3f0 > >>>> ffffffff810e6cee 0000000000001000 0000000000000000 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854092] Call Trace: > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854103] =A0[<ffffffff810e6aaa>] > ? > >>>> cleancache_get_key+0x4a/0x60 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854122] =A0[<ffffffff8133e3f0>] > ? > >>>> btrfs_wake_function+0x0/0x20 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854140] =A0[<ffffffff810e6cee>] > ? > >>>> __cleancache_flush_inode+0x3e/0x70 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854161] =A0[<ffffffff810b34d2>] > ? > >>>> truncate_inode_pages_range+0x42/0x440 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854182] =A0[<ffffffff812f115e>] > ? > >>>> btrfs_search_slot+0x89e/0xa00 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854201] =A0[<ffffffff810c3a45>] > ? > >>>> unmap_mapping_range+0xc5/0x2a0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854220] =A0[<ffffffff810b3930>] > ? > >>>> truncate_pagecache+0x40/0x70 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854240] =A0[<ffffffff813458b1>] > ? > >>>> btrfs_truncate_free_space_cache+0x81/0xe0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854261] =A0[<ffffffff812fce15>] > ? > >>>> btrfs_write_dirty_block_groups+0x245/0x500 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854283] =A0[<ffffffff812fcb6a>] > ? > >>>> btrfs_run_delayed_refs+0x1ba/0x220 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854304] =A0[<ffffffff8130afff>] > ? > >>>> commit_cowonly_roots+0xff/0x1d0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854323] =A0[<ffffffff8130c583>] > ? > >>>> btrfs_commit_transaction+0x363/0x760 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854344] =A0[<ffffffff81067ea0>] > ? > >>>> autoremove_wake_function+0x0/0x30 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854364] =A0[<ffffffff81305bc3>] > ? > >>>> transaction_kthread+0x283/0x2a0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854383] =A0[<ffffffff81305940>] > ? > >>>> transaction_kthread+0x0/0x2a0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854401] =A0[<ffffffff81305940>] > ? > >>>> transaction_kthread+0x0/0x2a0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854420] =A0[<ffffffff81067a16>] > ? > >>>> kthread+0x96/0xa0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854437] =A0[<ffffffff81003514>] > ? > >>>> kernel_thread_helper+0x4/0x10 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854455] =A0[<ffffffff81067980>] > ? > >>>> kthread+0x0/0xa0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854471] =A0[<ffffffff81003510>] > ? > >>>> kernel_thread_helper+0x0/0x10 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854488] Code: 55 b8 ff 00 00 > 00 > >>>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 > 00 > >>>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 > 00 00 > >>>> 48 89 06 84 c9 48 8b 85 68 fe ff ff > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854742] RIP > =A0[<ffffffff8133ef1b>] > >>>> btrfs_encode_fh+0x2b/0x120 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854762] =A0RSP > <ffff880129a11b00> > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854773] CR2: 0000000001400050 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.860906] ---[ end trace > >>>> f831c5ceeaa49287 ]--- > >>>> > >>>> in my case I had compress-force with lzo and disk_cache enabled > >>>> > >>>> > >>>> another user of the kernel I'm currently running has had the same > >>>> problem with zcache > >>>> (http://forums.gentoo.org/viewtopic-p-6571799.html#6571799) > >>>> > >>>> (looks like in his case compression and any other fancy additional > >>>> features weren't enabled) > >>>> > >>>> > >>>> changes made by this kernel or patchset to btrfs are from > >>>> * io-less dirty throttling patchset (44 patches) > >>>> * zcache V2 ("[PATCH] staging: zcache: fix memory leak" should be > >>>> applied in both cases) > >>>> * PATCH] fix (latent?) memory corruption in btrfs_encode_fh() > >>>> * btrfs-unstable changes to state of > >>>> 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 (so practically equals > btrfs > >>>> from 2.6.38-rc4+) > >>>> > >>>> I haven't tried downgrading to vanilla 2.6.37 with zcache only, > yet, > >>>> > >>>> but kind of upgraded btrfs to the latest state of the btrfs- > unstable > >>>> repository > (http://git.eu.kernel.org/?p=3Dlinux/kernel/git/mason/btrfs- > unstable.git;a=3Dsummary) > >>>> namely 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 > >>>> > >>>> this also didn't help and seemed to produce the same error-message > >>>> > >>>> so to summarize: > >>>> > >>>> 1) error message appearing with all 4 patchsets applied changing > >>>> btrfs-code and compress-force=3Dlzo and disk_cache enabled > >>>> > >>>> 2) error message appearing with default mount-options and btrfs > from > >>>> 2.6.37 and changes for zcache & io-less dirty throttling patchset > >>>> applied (first 2 patch(sets)) from list) > >>>> > >>>> > >>>> in my case I tried to extract / play back a 1.7 GiB tarball of my > >>>> portage-directory (lots of small files and some tar.bzip2 > archives) > >>>> via pbzip2 or 7z when the error happened and the message was shown > >>>> > >>>> Due to KMS sound (webradio streaming) was still running but I > couldn't > >>>> continue work (X switching to kernel output) so I did the magic > sysrq > >>>> combo (reisub) > >>>> > >>>> > >>>> Does that BUG message ring a bell for anyone ? > >>>> > >>>> (if I should leave out anyone from the CC in the next emails or > >>>> future, please holler - I don't want to spam your inboxes) > >>>> > >>>> Thanks > >>>> > >>>> Matt > >>>> > >>> > >>> > >>> OK, > >>> > >>> here's the output of a kernel - > >>> > >>> staying as close to vanilla (2.6.37) as the current situation > allows > >>> (only including some corruption or leak fixes for zram & zcache and > >>> "zram_xvmalloc: 64K page fixes and optimizations" (and 2 reiserfs > >>> fixes)): > >>> > >>> so in total the following patches are included in this new kernel > >>> (2.6.37-zcache): > >>> > >>> zram changes: > >>> 1 zram: Fix sparse warning 'Using plain integer as NULL pointer' > >>> 2 [PATCH] zram: fix data corruption issue > >>> 3 [PATCH 0/7][v2] zram_xvmalloc: 64K page fixes and optimizations > >>> > >>> zcache: > >>> 1 zcache-linux-2.6.37-110205 > >>> 2 [PATCH] staging: zcache: fix memory leak > >>> 3 [PATCH] zcache: Fix build error when sysfs is not defined > >>> > >>> reiserfs: > >>> 1 [PATCH] reiserfs: Make sure va_end() is always called after > >>> 2 [patch] reiserfs: potential ERR_PTR dereference > >>> > >>> > >>> the same procedure: > >>> > >>> trying to extract the mentioned portage-tarball: > >>> > >>> time (7z e -so -tbzip2 -mmt=3D5 /system/portage_backup_022011.tbz2 | > tar > >>> -xp -C /usr/gentoo/) > >>> > >>> > >>> this hopefully should make it easier to track down the problem: > >>> > >>> > >>> Feb 14 01:59:59 lupus kernel: [ =A0364.777143] device fsid > >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 7 > >>> /dev/mapper/portage > >>> Feb 14 01:59:59 lupus kernel: [ =A0364.844994] zcache: created > ephemeral > >>> tmem pool, id=3D2 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577573] BUG: unable to handle > >>> kernel paging request at 0000000037610050 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577605] IP: > [<ffffffff81338cbb>] > >>> btrfs_encode_fh+0x2b/0x110 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577630] PGD 0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577640] Oops: 0000 [#1] > PREEMPT SMP > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577665] last sysfs file: > >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577693] CPU 5 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577701] Modules linked in: > radeon > >>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT > >>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc > >>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp > >>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables > >>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack > xt_mark > >>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables > >>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss > snd_seq_midi_event > >>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi > >>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm > >>> snd_timer snd e1000e soundcore i2c_i801 shpchp snd_page_alloc wmi > >>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage > >>> ehci_hcd [last unloaded: tg3] > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578114] > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578124] Pid: 8285, comm: tar > Not > >>> tainted 2.6.37-zcache #2 FMP55/ipower G3710 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578146] RIP: > >>> 0010:[<ffffffff81338cbb>] =A0[<ffffffff81338cbb>] > >>> btrfs_encode_fh+0x2b/0x110 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578172] RSP: > >>> 0018:ffff88023ea9dcc8 =A0EFLAGS: 00010246 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578189] RAX: 00000000000000ff > >>> RBX: ffff8800b8643228 RCX: 0000000000000000 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578210] RDX: ffff88023ea9dd04 > >>> RSI: ffff88023ea9dd38 RDI: 0000000000000006 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578230] RBP: 0000000037610000 > >>> R08: ffffffff81338c90 R09: 0000000000000000 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578251] R10: 0000000000000019 > >>> R11: 0000000000000001 R12: ffff8800b8643380 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578272] R13: ffff8800b8643258 > >>> R14: 00007fff806f1f00 R15: 0000000000000000 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578293] FS: > >>> 00007f823d7ed700(0000) GS:ffff8800bf540000(0000) > >>> knlGS:0000000000000000 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578317] CS: =A00010 DS: 0000 E= S: > >>> 0000 CR0: 0000000080050033 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578334] CR2: 0000000037610050 > >>> CR3: 000000023dcef000 CR4: 00000000000006e0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578356] DR0: 0000000000000000 > >>> DR1: 0000000000000000 DR2: 0000000000000000 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578377] DR3: 0000000000000000 > >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578398] Process tar (pid: > 8285, > >>> threadinfo ffff88023ea9c000, task ffff88023e8b9d40) > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578421] Stack: > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578428] =A0000000013d096000 > >>> ffff88023ed84800 ffff88023ea9c000 0000000000000002 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578458] =A0ffffffffffffffff > >>> ffffffff810e3b1a 0000000000000001 000000061e1d5240 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578486] =A0fffffffffffffffb > >>> ffffffff810e3d5e ffff88010f383000 0000001ab86cb908 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578514] Call Trace: > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578525] =A0[<ffffffff810e3b1a>= ] > ? > >>> cleancache_get_key+0x4a/0x60 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578544] =A0[<ffffffff810e3d5e>= ] > ? > >>> __cleancache_flush_inode+0x3e/0x70 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578565] =A0[<ffffffff810b0ed2>= ] > ? > >>> truncate_inode_pages_range+0x42/0x440 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578586] =A0[<ffffffff81338451>= ] > ? > >>> btrfs_tree_unlock+0x41/0x50 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578605] =A0[<ffffffff812e4ed5>= ] > ? > >>> btrfs_release_path+0x15/0x70 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578624] =A0[<ffffffff8130bf29>= ] > ? > >>> btrfs_run_delayed_iputs+0x49/0x120 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578644] =A0[<ffffffff813107e7>= ] > ? > >>> btrfs_evict_inode+0x27/0x1e0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578663] =A0[<ffffffff810fc3aa>= ] > ? > >>> evict+0x1a/0xa0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578678] =A0[<ffffffff810fc6bd>= ] > ? > >>> iput+0x1cd/0x2b0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578694] =A0[<ffffffff810f266f>= ] > ? > >>> do_unlinkat+0x12f/0x1d0 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578712] =A0[<ffffffff810027bb>= ] > ? > >>> system_call_fastpath+0x16/0x1b > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578730] Code: 55 b8 ff 00 00 > 00 > >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 > 00 > >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 > 00 > >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578986] RIP > =A0[<ffffffff81338cbb>] > >>> btrfs_encode_fh+0x2b/0x110 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579081] =A0RSP > <ffff88023ea9dcc8> > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579093] CR2: 0000000037610050 > >>> Feb 14 02:02:49 lupus kernel: [ =A0534.587513] ---[ end trace > >>> c596b12e66c0b360 ]--- > >>> > >>> > >>> for reference I've pasted it to pastebin.com: > >>> > >>> "2.6.37_zcache_V2.patch" > >>> http://pastebin.com/cVSkwQ6M > >>> > >>> > >>> > >>> > >>> > >>> after the reboot I had forgotten to not mount the btrfs volume and > it > >>> threw a similar error-message again and remounted several > partitions > >>> read-only (including the system partition) > >>> the partition with btrfs (/usr/gentoo) couldn't be unmounted since > the > >>> umount process kind of hang > >>> > >>> so here's the error message after a reboot (might not be accurate > or > >>> kind of "skewed" since other patches are included (io-less dirty > >>> throttling, PATCH] fix (latent?) memory corruption in > >>> btrfs_encode_fh() and latest changes for btrfs)) but might help to > get > >>> some more evidence: > >>> > >>> > >>> Feb 14 02:05:46 lupus kernel: [ =A0 63.922648] device fsid > >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 13 > >>> /dev/mapper/portage > >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.047118] btrfs: unlinked 1 > orphans > >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.051956] zcache: created > ephemeral > >>> tmem pool, id=3D3 > >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801364] hub 2-1:1.0: > hub_suspend > >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801376] usb 2-1: unlink > >>> qh256-0001/ffff88023fefd180 start 1 [1/0 us] > >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801559] usb 2-1: usb auto- > suspend > >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797929] hub 2-0:1.0: > hub_suspend > >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797939] usb usb2: bus auto- > suspend > >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797942] ehci_hcd 0000:00:1d.0: > >>> suspend root hub > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050493] BUG: unable to handle > >>> kernel paging request at 0000030341ed0050 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050670] IP: > [<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050807] PGD 0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050929] Oops: 0000 [#1] > PREEMPT SMP > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051223] last sysfs file: > >>> /sys/module/pcie_aspm/parameters/policy > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051365] CPU 6 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051411] Modules linked in: > >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc > >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 > >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp > >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner > xt_hashlimit > >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack > xt_string > >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy > snd_seq_oss > >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss > >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel > snd_hda_codec > >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp > e1000e > >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb > >>> usb_storage ehci_hcd [last unloaded: tg3] > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054694] > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054776] Pid: 7962, comm: > umount > >>> Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower G3710 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054912] RIP: > >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055084] RSP: > >>> 0018:ffff88023c77d6f8 =A0EFLAGS: 00010246 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055173] RAX: 00000000000000ff > >>> RBX: ffff88023cde0168 RCX: 0000000000000000 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055265] RDX: ffff88023c77d734 > >>> RSI: ffff88023c77d768 RDI: 0000000000000006 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055357] RBP: 0000030341ed0000 > >>> R08: ffffffff8133eef0 R09: ffff88023c77d8d8 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055448] R10: 0000000000000003 > >>> R11: 0000000000000001 R12: 00000000ffffffff > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055540] R13: ffff88023cde0030 > >>> R14: ffffea0007dd39f0 R15: 0000000000000001 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055633] FS: > >>> 00007fb1cad04760(0000) GS:ffff8800bf580000(0000) > >>> knlGS:0000000000000000 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055762] CS: =A00010 DS: 0000 E= S: > >>> 0000 CR0: 000000008005003b > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055851] CR2: 0000030341ed0050 > >>> CR3: 000000023c7d5000 CR4: 00000000000006e0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055943] DR0: 0000000000000000 > >>> DR1: 0000000000000000 DR2: 0000000000000000 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056035] DR3: 0000000000000000 > >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056128] Process umount (pid: > >>> 7962, threadinfo ffff88023c77c000, task ffff88023c7a4260) > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056257] Stack: > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056338] =A00000000000000000 > >>> 0000000000000002 ffff880200000000 0000000000000003 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056630] =A0ffffea0007dd39f0 > >>> ffffffff810e6aaa ffff880200000041 0000000600000246 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056922] =A0ffff88023cdcd300 > >>> ffffffff810e6b3a 0000000000000001 ffffffff8132bb7c > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057213] Call Trace: > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057301] =A0[<ffffffff810e6aaa>= ] > ? > >>> cleancache_get_key+0x4a/0x60 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057393] =A0[<ffffffff810e6b3a>= ] > ? > >>> __cleancache_get_page+0x7a/0xd0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057487] =A0[<ffffffff8132bb7c>= ] > ? > >>> merge_state+0x7c/0x150 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057579] =A0[<ffffffff8132e4de>= ] > ? > >>> __extent_read_full_page+0x52e/0x710 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057673] =A0[<ffffffff813bdea4>= ] > ? > >>> rb_insert_color+0xa4/0x140 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057766] =A0[<ffffffff8134b0b6>= ] > ? > >>> tree_insert+0x86/0x1e0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057859] =A0[<ffffffff81058c73>= ] > ? > >>> lock_timer_base.clone.22+0x33/0x70 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058004] =A0[<ffffffff81305060>= ] > ? > >>> btree_get_extent+0x0/0x1c0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058097] =A0[<ffffffff81330b21>= ] > ? > >>> read_extent_buffer_pages+0x2d1/0x470 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058191] =A0[<ffffffff81305060>= ] > ? > >>> btree_get_extent+0x0/0x1c0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058283] =A0[<ffffffff8130674d>= ] > ? > >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058415] =A0[<ffffffff813076f9>= ] > ? > >>> read_tree_block+0x39/0x60 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058508] =A0[<ffffffff812ed5e6>= ] > ? > >>> read_block_for_search.clone.40+0x116/0x410 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058638] =A0[<ffffffff812eb228>= ] > ? > >>> btrfs_cow_block+0x118/0x2b0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058731] =A0[<ffffffff812f0bc7>= ] > ? > >>> btrfs_search_slot+0x307/0xa00 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058823] =A0[<ffffffff812f6b18>= ] > ? > >>> lookup_inline_extent_backref+0x98/0x4a0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058919] =A0[<ffffffff810e33d7>= ] > ? > >>> kmem_cache_alloc+0x87/0xa0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059032] =A0[<ffffffff812f891c>= ] > ? > >>> __btrfs_free_extent+0xcc/0x6f0 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059125] =A0[<ffffffff812fc4cf>= ] > ? > >>> run_clustered_refs+0x39f/0x880 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059220] =A0[<ffffffff810b1f98>= ] > ? > >>> pagevec_lookup_tag+0x18/0x20 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059312] =A0[<ffffffff810a7c81>= ] > ? > >>> filemap_fdatawait_range+0x91/0x180 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059405] =A0[<ffffffff812fca77>= ] > ? > >>> btrfs_run_delayed_refs+0xc7/0x220 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059498] =A0[<ffffffff8130c29c>= ] > ? > >>> btrfs_commit_transaction+0x7c/0x760 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059591] =A0[<ffffffff81067ea0>= ] > ? > >>> autoremove_wake_function+0x0/0x30 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059683] =A0[<ffffffff8130cdef>= ] > ? > >>> start_transaction+0x1bf/0x270 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059775] =A0[<ffffffff8110e96a>= ] > ? > >>> __sync_filesystem+0x5a/0x90 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059867] =A0[<ffffffff810eae8d>= ] > ? > >>> generic_shutdown_super+0x2d/0x100 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059960] =A0[<ffffffff810eafb9>= ] > ? > >>> kill_anon_super+0x9/0x50 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060051] =A0[<ffffffff810eb266>= ] > ? > >>> deactivate_locked_super+0x26/0x80 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060144] =A0[<ffffffff811043ea>= ] > ? > >>> sys_umount+0x7a/0x390 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060235] =A0[<ffffffff810027bb>= ] > ? > >>> system_call_fastpath+0x16/0x1b > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060325] Code: 55 b8 ff 00 00 > 00 > >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 > 00 > >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 > 00 > >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063170] RIP > =A0[<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063302] =A0RSP > <ffff88023c77d6f8> > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063386] CR2: 0000030341ed0050 > >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063528] ---[ end trace > >>> 3313552d105b1535 ]--- > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.961960] BUG: unable to handle > >>> kernel paging request at 0000030341ed0050 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962171] IP: > [<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962307] PGD 0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962430] Oops: 0000 [#2] > PREEMPT SMP > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962637] last sysfs file: > >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962766] CPU 5 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962812] Modules linked in: > >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc > >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 > >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp > >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner > xt_hashlimit > >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack > xt_string > >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy > snd_seq_oss > >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss > >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel > snd_hda_codec > >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp > e1000e > >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb > >>> usb_storage ehci_hcd [last unloaded: tg3] > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966044] > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966127] Pid: 7915, comm: > >>> btrfs-transacti Tainted: G =A0 =A0 =A0D =A0 =A0 2.6.37-plus_v16_zcach= e #4 > >>> FMP55/ipower G3710 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966266] RIP: > >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966440] RSP: > >>> 0018:ffff88023c63b6e0 =A0EFLAGS: 00010246 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966528] RAX: 00000000000000ff > >>> RBX: ffff88023cde0168 RCX: 0000000000000000 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966620] RDX: ffff88023c63b71c > >>> RSI: ffff88023c63b750 RDI: 0000000000000006 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966713] RBP: 0000030341ed0000 > >>> R08: ffffffff8133eef0 R09: ffff88023c63b8c0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966805] R10: 0000000000000003 > >>> R11: 0000000000000001 R12: 00000000ffffffff > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966897] R13: ffff88023cde0030 > >>> R14: ffffea0007d59bc8 R15: 0000000000000001 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966990] FS: > >>> 0000000000000000(0000) GS:ffff8800bf540000(0000) > >>> knlGS:0000000000000000 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967120] CS: =A00010 DS: 0000 E= S: > >>> 0000 CR0: 000000008005003b > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967209] CR2: 0000030341ed0050 > >>> CR3: 0000000001c27000 CR4: 00000000000006e0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967302] DR0: 0000000000000000 > >>> DR1: 0000000000000000 DR2: 0000000000000000 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967394] DR3: 0000000000000000 > >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967500] Process btrfs- > transacti > >>> (pid: 7915, threadinfo ffff88023c63a000, task ffff88023c7a1620) > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967630] Stack: > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967711] =A00000000000000000 > >>> 0000000000000002 0000000000000000 0000000000000003 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968057] =A0ffffea0007d59bc8 > >>> ffffffff810e6aaa 0000000000000041 0000000600000002 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968348] =A00000000000000000 > >>> ffffffff810e6b3a 0000000000000001 ffffffff00000001 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968639] Call Trace: > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968728] =A0[<ffffffff810e6aaa>= ] > ? > >>> cleancache_get_key+0x4a/0x60 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968820] =A0[<ffffffff810e6b3a>= ] > ? > >>> __cleancache_get_page+0x7a/0xd0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968914] =A0[<ffffffff8132e4de>= ] > ? > >>> __extent_read_full_page+0x52e/0x710 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969008] =A0[<ffffffff812f3f93>= ] > ? > >>> update_reserved_bytes+0xb3/0x140 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969102] =A0[<ffffffff81305060>= ] > ? > >>> btree_get_extent+0x0/0x1c0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969193] =A0[<ffffffff8132bb7c>= ] > ? > >>> merge_state+0x7c/0x150 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969285] =A0[<ffffffff81330b21>= ] > ? > >>> read_extent_buffer_pages+0x2d1/0x470 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969378] =A0[<ffffffff81305060>= ] > ? > >>> btree_get_extent+0x0/0x1c0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969470] =A0[<ffffffff8130674d>= ] > ? > >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969602] =A0[<ffffffff813076f9>= ] > ? > >>> read_tree_block+0x39/0x60 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969694] =A0[<ffffffff812ed5e6>= ] > ? > >>> read_block_for_search.clone.40+0x116/0x410 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969878] =A0[<ffffffff812f0bc7>= ] > ? > >>> btrfs_search_slot+0x307/0xa00 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969970] =A0[<ffffffff812f6b18>= ] > ? > >>> lookup_inline_extent_backref+0x98/0x4a0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970065] =A0[<ffffffff810e33d7>= ] > ? > >>> kmem_cache_alloc+0x87/0xa0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970157] =A0[<ffffffff812f891c>= ] > ? > >>> __btrfs_free_extent+0xcc/0x6f0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970249] =A0[<ffffffff812f8434>= ] > ? > >>> update_block_group.clone.62+0xc4/0x280 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970343] =A0[<ffffffff812fc4cf>= ] > ? > >>> run_clustered_refs+0x39f/0x880 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970436] =A0[<ffffffff812fca77>= ] > ? > >>> btrfs_run_delayed_refs+0xc7/0x220 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970529] =A0[<ffffffff810e15f9>= ] > ? > >>> new_slab+0x169/0x1f0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970619] =A0[<ffffffff8130c29c>= ] > ? > >>> btrfs_commit_transaction+0x7c/0x760 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970713] =A0[<ffffffff81067ea0>= ] > ? > >>> autoremove_wake_function+0x0/0x30 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970806] =A0[<ffffffff81305bc3>= ] > ? > >>> transaction_kthread+0x283/0x2a0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970898] =A0[<ffffffff81305940>= ] > ? > >>> transaction_kthread+0x0/0x2a0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970990] =A0[<ffffffff81305940>= ] > ? > >>> transaction_kthread+0x0/0x2a0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971083] =A0[<ffffffff81067a16>= ] > ? > >>> kthread+0x96/0xa0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971174] =A0[<ffffffff81003514>= ] > ? > >>> kernel_thread_helper+0x4/0x10 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971266] =A0[<ffffffff81067980>= ] > ? > >>> kthread+0x0/0xa0 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971355] =A0[<ffffffff81003510>= ] > ? > >>> kernel_thread_helper+0x0/0x10 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971444] Code: 55 b8 ff 00 00 > 00 > >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 > 00 > >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 > 00 > >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974280] RIP > =A0[<ffffffff8133ef1b>] > >>> btrfs_encode_fh+0x2b/0x120 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974412] =A0RSP > <ffff88023c63b6e0> > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974497] CR2: 0000030341ed0050 > >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974599] ---[ end trace > >>> 3313552d105b1536 ]--- > >>> Feb 14 02:07:04 lupus kernel: [ =A0141.906124] zcache: destroyed pool > id=3D2 > >>> Feb 14 02:07:17 lupus kernel: [ =A0154.783358] SysRq : Keyboard mode > set > >>> to system default > >>> Feb 14 02:07:18 lupus kernel: [ =A0155.486147] SysRq : Terminate All > Tasks > >>> > >>> > >>> That's all for now > >>> > >>> Thanks & Regards > >>> > >>> Matt > >>> > >> > >> (leaving out several folks from the CC to avoid spamming - if I left > >> out someone wrongfully please re-add) > >> > >> running an addr2line reveals: > >> > >> > >> addr2line -e /usr/src/linux-2.6.37_vanilla/vmlinux -i > ffffffff81338cbb > >> export.c:0 > >> > >> > >> hope that helps > >> > >> > >> Regards > >> > >> Matt > >> > > > > Just my guessing. I might be wrong. > > > > __cleancache_flush_inode calls cleancache_get_key with > cleancache_filekey. > > cleancache_file_key's size is just 6 * u32. > > cleancache_get_key calls btrfs_encode_fh with the key. > > but btrfs_encode_fh does typecasting the key to btrfs_fid which is > > bigger size than cleancache_filekey's one so it should not access > > fields beyond cleancache_get_key. > > > > I think some file systems use extend fid so in there, this problem > can > > happen. I don't know why we can't find it earlier. Maybe Dan and > > others test it for a long time. > > > > Am I missing something? > > > > > > > > -- > > Kind regards, > > Minchan Kim > > >=20 > reposting Minchan's message for reference to the btrfs mailing list > while also adding >=20 > Li Zefan, Miao Xie, Yan Zheng, Dan Rosenberg and Josef Bacik to CC >=20 > Regards >=20 > Matt Hi Matt and Minchan -- (BTRFS EXPERTS SEE *** BELOW) I definitely see a bug in cleancache_get_key in the monolithic zcache+cleancache+frontswap patch I posted on oss.oracle.com that is corrected in linux-next but I don't see how it could get provoked by btrfs. The bug is that, in cleancache_get_key, the return value of fhfn should be checked against 255. If the return value is 255, cleancache_get_key should return -1. This should disable cleancache for any filesystem where KEY_MAX is too large. But cleancache_get_key always calls fhfn with connectable =3D=3D 0 and CLEANCACHE_KEY_MAX=3D=3D6 should be greater than BTRFS_FID_SIZE_CONNECTABLE (which I think should be 5?). And the elements written into the typecast btrfs_fid should be only writing the first 5 32-bit words. So if the problem is the one Minchan suggests, I am confused. Matt, can you first confirm that you are using the cleancache patches from my monolithic patch from oss.oracle.com (which I think you are)? *** Looking over the stacktrace and the code, I have an alternate theory. I wonder if it is ever possible the inode->dentry list is empty (or corrupt)? list_first_entry() assumes the list is non-empty. If this is possible and unusual, maybe my testing didn't see the problem? Thanks, Dan P.S. For those new to cleancache, the code is in linux-next here: http://git.kernel.org/?p=3Dlinux/kernel/git/sfr/linux-next.git;a=3Dblob;f= =3Dmm/cleancache.c;h=3Df545eb8f11180cfb3aaf3f4f85a5255be8f9f881;hb=3Da57cb3= bc013d2e262a663df50af6a9e7cc88bdad=20 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression 2011-02-16 1:27 ` Dan Magenheimer @ 2011-02-16 1:58 ` Matt 2011-02-16 4:36 ` Minchan Kim 1 sibling, 0 replies; 6+ messages in thread From: Matt @ 2011-02-16 1:58 UTC (permalink / raw) To: Dan Magenheimer Cc: Minchan Kim, gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan On Wed, Feb 16, 2011 at 1:27 AM, Dan Magenheimer <dan.magenheimer@oracle.com> wrote: >> -----Original Message----- >> From: Matt [mailto:jackdachef@gmail.com] >> Sent: Tuesday, February 15, 2011 5:12 PM >> To: Minchan Kim >> Cc: Dan Magenheimer; gregkh@suse.de; Chris Mason; linux- >> kernel@vger.kernel.org; linux-mm@kvack.org; ngupta@vflare.org; linux- >> btrfs@vger.kernel.org; Josef Bacik; Dan Rosenberg; Yan Zheng; >> miaox@cn.fujitsu.com; Li Zefan >> Subject: Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page >> cache/swap compression >> >> On Mon, Feb 14, 2011 at 4:35 AM, Minchan Kim <minchan.kim@gmail.com> >> wrote: >> > On Mon, Feb 14, 2011 at 10:29 AM, Matt <jackdachef@gmail.com> wrote: >> >> On Mon, Feb 14, 2011 at 1:24 AM, Matt <jackdachef@gmail.com> wrote: >> >>> On Mon, Feb 14, 2011 at 12:08 AM, Matt <jackdachef@gmail.com> >> wrote: >> >>>> On Wed, Feb 9, 2011 at 1:03 AM, Dan Magenheimer >> >>>> <dan.magenheimer@oracle.com> wrote: >> >>>> [snip] >> >>>>> >> >>>>> If I've missed anything important, please let me know! >> >>>>> >> >>>>> Thanks again! >> >>>>> Dan >> >>>>> >> >>>> >> >>>> Hi Dan, >> >>>> >> >>>> thank you so much for answering my email in such detail ! >> >>>> >> >>>> I shall pick up on that mail in my next email sending to the >> mailing list :) >> >>>> >> >>>> >> >>>> currently I've got a problem with btrfs which seems to get >> triggered >> >>>> by cleancache get-operations: >> >>>> >> >>>> >> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297377] device fsid >> >>>> 354120c992a00761-5fa07d400126a895 devid 1 transid 7 >> >>>> /dev/mapper/portage >> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297698] btrfs: enabling disk >> space caching >> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.297700] btrfs: force lzo >> compression >> >>>> Feb 14 00:37:19 lupus kernel: [ 2831.315844] zcache: created >> ephemeral >> >>>> tmem pool, id=3D3 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853188] BUG: unable to handle >> >>>> kernel paging request at 0000000001400050 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853219] IP: >> [<ffffffff8133ef1b>] >> >>>> btrfs_encode_fh+0x2b/0x120 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853242] PGD 0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853251] Oops: 0000 [#1] >> PREEMPT SMP >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853275] last sysfs file: >> >>>> /sys/devices/platform/coretemp.3/temp1_input >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853295] CPU 4 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853303] Modules linked in: >> radeon >> >>>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >> >>>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >> >>>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >> nf_conntrack_ftp >> >>>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >> >>>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack >> xt_mark >> >>>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables >> x_tables >> >>>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >> snd_seq_midi_event >> >>>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >> snd_hda_codec_hdmi >> >>>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep >> snd_pcm >> >>>> snd_timer snd soundcore i2c_i801 wmi e1000e shpchp snd_page_alloc >> >>>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >> >>>> ehci_hcd [last unloaded: tg3] >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853682] >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853690] Pid: 11394, comm: >> >>>> btrfs-transacti Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower >> >>>> G3710 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853725] RIP: >> >>>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >> >>>> btrfs_encode_fh+0x2b/0x120 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853751] RSP: >> >>>> 0018:ffff880129a11b00 =A0EFLAGS: 00010246 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853767] RAX: 00000000000000ff >> >>>> RBX: ffff88014a1ce628 RCX: 0000000000000000 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853788] RDX: ffff880129a11b3c >> >>>> RSI: ffff880129a11b70 RDI: 0000000000000006 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853808] RBP: 0000000001400000 >> >>>> R08: ffffffff8133eef0 R09: ffff880129a11c68 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853829] R10: 0000000000000001 >> >>>> R11: 0000000000000001 R12: ffff88014a1ce780 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853849] R13: ffff88021fefc000 >> >>>> R14: ffff88021fef9000 R15: 0000000000000000 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853870] FS: >> >>>> 0000000000000000(0000) GS:ffff8800bf500000(0000) >> >>>> knlGS:0000000000000000 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853894] CS: =A00010 DS: 0000 >> ES: >> >>>> 0000 CR0: 000000008005003b >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853911] CR2: 0000000001400050 >> >>>> CR3: 0000000001c27000 CR4: 00000000000006e0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853932] DR0: 0000000000000000 >> >>>> DR1: 0000000000000000 DR2: 0000000000000000 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853952] DR3: 0000000000000000 >> >>>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853973] Process btrfs- >> transacti >> >>>> (pid: 11394, threadinfo ffff880129a10000, task ffff880202e4ac40) >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.853999] Stack: >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854006] =A0ffff880129a11b50 >> >>>> ffff880000000003 ffff88003c60a098 0000000000000003 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854035] =A0ffffffffffffffff >> >>>> ffffffff810e6aaa 0000000000000000 0000000602e4ac40 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854063] =A0ffffffff8133e3f0 >> >>>> ffffffff810e6cee 0000000000001000 0000000000000000 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854092] Call Trace: >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854103] =A0[<ffffffff810e6aaa>= ] >> ? >> >>>> cleancache_get_key+0x4a/0x60 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854122] =A0[<ffffffff8133e3f0>= ] >> ? >> >>>> btrfs_wake_function+0x0/0x20 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854140] =A0[<ffffffff810e6cee>= ] >> ? >> >>>> __cleancache_flush_inode+0x3e/0x70 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854161] =A0[<ffffffff810b34d2>= ] >> ? >> >>>> truncate_inode_pages_range+0x42/0x440 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854182] =A0[<ffffffff812f115e>= ] >> ? >> >>>> btrfs_search_slot+0x89e/0xa00 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854201] =A0[<ffffffff810c3a45>= ] >> ? >> >>>> unmap_mapping_range+0xc5/0x2a0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854220] =A0[<ffffffff810b3930>= ] >> ? >> >>>> truncate_pagecache+0x40/0x70 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854240] =A0[<ffffffff813458b1>= ] >> ? >> >>>> btrfs_truncate_free_space_cache+0x81/0xe0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854261] =A0[<ffffffff812fce15>= ] >> ? >> >>>> btrfs_write_dirty_block_groups+0x245/0x500 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854283] =A0[<ffffffff812fcb6a>= ] >> ? >> >>>> btrfs_run_delayed_refs+0x1ba/0x220 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854304] =A0[<ffffffff8130afff>= ] >> ? >> >>>> commit_cowonly_roots+0xff/0x1d0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854323] =A0[<ffffffff8130c583>= ] >> ? >> >>>> btrfs_commit_transaction+0x363/0x760 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854344] =A0[<ffffffff81067ea0>= ] >> ? >> >>>> autoremove_wake_function+0x0/0x30 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854364] =A0[<ffffffff81305bc3>= ] >> ? >> >>>> transaction_kthread+0x283/0x2a0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854383] =A0[<ffffffff81305940>= ] >> ? >> >>>> transaction_kthread+0x0/0x2a0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854401] =A0[<ffffffff81305940>= ] >> ? >> >>>> transaction_kthread+0x0/0x2a0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854420] =A0[<ffffffff81067a16>= ] >> ? >> >>>> kthread+0x96/0xa0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854437] =A0[<ffffffff81003514>= ] >> ? >> >>>> kernel_thread_helper+0x4/0x10 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854455] =A0[<ffffffff81067980>= ] >> ? >> >>>> kthread+0x0/0xa0 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854471] =A0[<ffffffff81003510>= ] >> ? >> >>>> kernel_thread_helper+0x0/0x10 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854488] Code: 55 b8 ff 00 00 >> 00 >> >>>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 >> 00 >> >>>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 >> 00 00 >> >>>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854742] RIP >> =A0[<ffffffff8133ef1b>] >> >>>> btrfs_encode_fh+0x2b/0x120 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854762] =A0RSP >> <ffff880129a11b00> >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854773] CR2: 0000000001400050 >> >>>> Feb 14 00:39:20 lupus kernel: [ 2951.860906] ---[ end trace >> >>>> f831c5ceeaa49287 ]--- >> >>>> >> >>>> in my case I had compress-force with lzo and disk_cache enabled >> >>>> >> >>>> >> >>>> another user of the kernel I'm currently running has had the same >> >>>> problem with zcache >> >>>> (http://forums.gentoo.org/viewtopic-p-6571799.html#6571799) >> >>>> >> >>>> (looks like in his case compression and any other fancy additional >> >>>> features weren't enabled) >> >>>> >> >>>> >> >>>> changes made by this kernel or patchset to btrfs are from >> >>>> * io-less dirty throttling patchset (44 patches) >> >>>> * zcache V2 ("[PATCH] staging: zcache: fix memory leak" should be >> >>>> applied in both cases) >> >>>> * PATCH] fix (latent?) memory corruption in btrfs_encode_fh() >> >>>> * btrfs-unstable changes to state of >> >>>> 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 (so practically equals >> btrfs >> >>>> from 2.6.38-rc4+) >> >>>> >> >>>> I haven't tried downgrading to vanilla 2.6.37 with zcache only, >> yet, >> >>>> >> >>>> but kind of upgraded btrfs to the latest state of the btrfs- >> unstable >> >>>> repository >> (http://git.eu.kernel.org/?p=3Dlinux/kernel/git/mason/btrfs- >> unstable.git;a=3Dsummary) >> >>>> namely 3a90983dbdcb2f4f48c0d771d8e5b4d88f27fae6 >> >>>> >> >>>> this also didn't help and seemed to produce the same error-message >> >>>> >> >>>> so to summarize: >> >>>> >> >>>> 1) error message appearing with all 4 patchsets applied changing >> >>>> btrfs-code and compress-force=3Dlzo and disk_cache enabled >> >>>> >> >>>> 2) error message appearing with default mount-options and btrfs >> from >> >>>> 2.6.37 and changes for zcache & io-less dirty throttling patchset >> >>>> applied (first 2 patch(sets)) from list) >> >>>> >> >>>> >> >>>> in my case I tried to extract / play back a 1.7 GiB tarball of my >> >>>> portage-directory (lots of small files and some tar.bzip2 >> archives) >> >>>> via pbzip2 or 7z when the error happened and the message was shown >> >>>> >> >>>> Due to KMS sound (webradio streaming) was still running but I >> couldn't >> >>>> continue work (X switching to kernel output) so I did the magic >> sysrq >> >>>> combo (reisub) >> >>>> >> >>>> >> >>>> Does that BUG message ring a bell for anyone ? >> >>>> >> >>>> (if I should leave out anyone from the CC in the next emails or >> >>>> future, please holler - I don't want to spam your inboxes) >> >>>> >> >>>> Thanks >> >>>> >> >>>> Matt >> >>>> >> >>> >> >>> >> >>> OK, >> >>> >> >>> here's the output of a kernel - >> >>> >> >>> staying as close to vanilla (2.6.37) as the current situation >> allows >> >>> (only including some corruption or leak fixes for zram & zcache and >> >>> "zram_xvmalloc: 64K page fixes and optimizations" (and 2 reiserfs >> >>> fixes)): >> >>> >> >>> so in total the following patches are included in this new kernel >> >>> (2.6.37-zcache): >> >>> >> >>> zram changes: >> >>> 1 zram: Fix sparse warning 'Using plain integer as NULL pointer' >> >>> 2 [PATCH] zram: fix data corruption issue >> >>> 3 [PATCH 0/7][v2] zram_xvmalloc: 64K page fixes and optimizations >> >>> >> >>> zcache: >> >>> 1 zcache-linux-2.6.37-110205 >> >>> 2 [PATCH] staging: zcache: fix memory leak >> >>> 3 [PATCH] zcache: Fix build error when sysfs is not defined >> >>> >> >>> reiserfs: >> >>> 1 [PATCH] reiserfs: Make sure va_end() is always called after >> >>> 2 [patch] reiserfs: potential ERR_PTR dereference >> >>> >> >>> >> >>> the same procedure: >> >>> >> >>> trying to extract the mentioned portage-tarball: >> >>> >> >>> time (7z e -so -tbzip2 -mmt=3D5 /system/portage_backup_022011.tbz2 | >> tar >> >>> -xp -C /usr/gentoo/) >> >>> >> >>> >> >>> this hopefully should make it easier to track down the problem: >> >>> >> >>> >> >>> Feb 14 01:59:59 lupus kernel: [ =A0364.777143] device fsid >> >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 7 >> >>> /dev/mapper/portage >> >>> Feb 14 01:59:59 lupus kernel: [ =A0364.844994] zcache: created >> ephemeral >> >>> tmem pool, id=3D2 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577573] BUG: unable to handle >> >>> kernel paging request at 0000000037610050 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577605] IP: >> [<ffffffff81338cbb>] >> >>> btrfs_encode_fh+0x2b/0x110 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577630] PGD 0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577640] Oops: 0000 [#1] >> PREEMPT SMP >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577665] last sysfs file: >> >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577693] CPU 5 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.577701] Modules linked in: >> radeon >> >>> ttm drm_kms_helper cfbcopyarea cfbimgblt cfbfillrect ipt_REJECT >> >>> ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc nf_conntrack_irc >> >>> nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp >> >>> iptable_filter ipt_addrtype xt_DSCP xt_dscp xt_iprange ip_tables >> >>> ip6table_filter xt_NFQUEUE xt_owner xt_hashlimit xt_conntrack >> xt_mark >> >>> xt_multiport xt_connmark nf_conntrack xt_string ip6_tables x_tables >> >>> it87 hwmon_vid coretemp snd_seq_dummy snd_seq_oss >> snd_seq_midi_event >> >>> snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_hda_codec_hdmi >> >>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm >> >>> snd_timer snd e1000e soundcore i2c_i801 shpchp snd_page_alloc wmi >> >>> libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb usb_storage >> >>> ehci_hcd [last unloaded: tg3] >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578114] >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578124] Pid: 8285, comm: tar >> Not >> >>> tainted 2.6.37-zcache #2 FMP55/ipower G3710 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578146] RIP: >> >>> 0010:[<ffffffff81338cbb>] =A0[<ffffffff81338cbb>] >> >>> btrfs_encode_fh+0x2b/0x110 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578172] RSP: >> >>> 0018:ffff88023ea9dcc8 =A0EFLAGS: 00010246 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578189] RAX: 00000000000000ff >> >>> RBX: ffff8800b8643228 RCX: 0000000000000000 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578210] RDX: ffff88023ea9dd04 >> >>> RSI: ffff88023ea9dd38 RDI: 0000000000000006 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578230] RBP: 0000000037610000 >> >>> R08: ffffffff81338c90 R09: 0000000000000000 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578251] R10: 0000000000000019 >> >>> R11: 0000000000000001 R12: ffff8800b8643380 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578272] R13: ffff8800b8643258 >> >>> R14: 00007fff806f1f00 R15: 0000000000000000 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578293] FS: >> >>> 00007f823d7ed700(0000) GS:ffff8800bf540000(0000) >> >>> knlGS:0000000000000000 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578317] CS: =A00010 DS: 0000 = ES: >> >>> 0000 CR0: 0000000080050033 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578334] CR2: 0000000037610050 >> >>> CR3: 000000023dcef000 CR4: 00000000000006e0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578356] DR0: 0000000000000000 >> >>> DR1: 0000000000000000 DR2: 0000000000000000 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578377] DR3: 0000000000000000 >> >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578398] Process tar (pid: >> 8285, >> >>> threadinfo ffff88023ea9c000, task ffff88023e8b9d40) >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578421] Stack: >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578428] =A0000000013d096000 >> >>> ffff88023ed84800 ffff88023ea9c000 0000000000000002 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578458] =A0ffffffffffffffff >> >>> ffffffff810e3b1a 0000000000000001 000000061e1d5240 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578486] =A0fffffffffffffffb >> >>> ffffffff810e3d5e ffff88010f383000 0000001ab86cb908 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578514] Call Trace: >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578525] =A0[<ffffffff810e3b1a= >] >> ? >> >>> cleancache_get_key+0x4a/0x60 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578544] =A0[<ffffffff810e3d5e= >] >> ? >> >>> __cleancache_flush_inode+0x3e/0x70 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578565] =A0[<ffffffff810b0ed2= >] >> ? >> >>> truncate_inode_pages_range+0x42/0x440 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578586] =A0[<ffffffff81338451= >] >> ? >> >>> btrfs_tree_unlock+0x41/0x50 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578605] =A0[<ffffffff812e4ed5= >] >> ? >> >>> btrfs_release_path+0x15/0x70 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578624] =A0[<ffffffff8130bf29= >] >> ? >> >>> btrfs_run_delayed_iputs+0x49/0x120 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578644] =A0[<ffffffff813107e7= >] >> ? >> >>> btrfs_evict_inode+0x27/0x1e0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578663] =A0[<ffffffff810fc3aa= >] >> ? >> >>> evict+0x1a/0xa0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578678] =A0[<ffffffff810fc6bd= >] >> ? >> >>> iput+0x1cd/0x2b0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578694] =A0[<ffffffff810f266f= >] >> ? >> >>> do_unlinkat+0x12f/0x1d0 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578712] =A0[<ffffffff810027bb= >] >> ? >> >>> system_call_fastpath+0x16/0x1b >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578730] Code: 55 b8 ff 00 00 >> 00 >> >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 >> 00 >> >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 >> 00 >> >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.578986] RIP >> =A0[<ffffffff81338cbb>] >> >>> btrfs_encode_fh+0x2b/0x110 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579081] =A0RSP >> <ffff88023ea9dcc8> >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.579093] CR2: 0000000037610050 >> >>> Feb 14 02:02:49 lupus kernel: [ =A0534.587513] ---[ end trace >> >>> c596b12e66c0b360 ]--- >> >>> >> >>> >> >>> for reference I've pasted it to pastebin.com: >> >>> >> >>> "2.6.37_zcache_V2.patch" >> >>> http://pastebin.com/cVSkwQ6M >> >>> >> >>> >> >>> >> >>> >> >>> >> >>> after the reboot I had forgotten to not mount the btrfs volume and >> it >> >>> threw a similar error-message again and remounted several >> partitions >> >>> read-only (including the system partition) >> >>> the partition with btrfs (/usr/gentoo) couldn't be unmounted since >> the >> >>> umount process kind of hang >> >>> >> >>> so here's the error message after a reboot (might not be accurate >> or >> >>> kind of "skewed" since other patches are included (io-less dirty >> >>> throttling, PATCH] fix (latent?) memory corruption in >> >>> btrfs_encode_fh() and latest changes for btrfs)) but might help to >> get >> >>> some more evidence: >> >>> >> >>> >> >>> Feb 14 02:05:46 lupus kernel: [ =A0 63.922648] device fsid >> >>> 684a4213565dd3fe-ca991821badc2aac devid 1 transid 13 >> >>> /dev/mapper/portage >> >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.047118] btrfs: unlinked 1 >> orphans >> >>> Feb 14 02:05:46 lupus kernel: [ =A0 64.051956] zcache: created >> ephemeral >> >>> tmem pool, id=3D3 >> >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801364] hub 2-1:1.0: >> hub_suspend >> >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801376] usb 2-1: unlink >> >>> qh256-0001/ffff88023fefd180 start 1 [1/0 us] >> >>> Feb 14 02:05:48 lupus kernel: [ =A0 65.801559] usb 2-1: usb auto- >> suspend >> >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797929] hub 2-0:1.0: >> hub_suspend >> >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797939] usb usb2: bus auto- >> suspend >> >>> Feb 14 02:05:50 lupus kernel: [ =A0 67.797942] ehci_hcd 0000:00:1d.0= : >> >>> suspend root hub >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050493] BUG: unable to handle >> >>> kernel paging request at 0000030341ed0050 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050670] IP: >> [<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050807] PGD 0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.050929] Oops: 0000 [#1] >> PREEMPT SMP >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051223] last sysfs file: >> >>> /sys/module/pcie_aspm/parameters/policy >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051365] CPU 6 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.051411] Modules linked in: >> >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >> >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >> >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >> >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner >> xt_hashlimit >> >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack >> xt_string >> >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy >> snd_seq_oss >> >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >> >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel >> snd_hda_codec >> >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp >> e1000e >> >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >> >>> usb_storage ehci_hcd [last unloaded: tg3] >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054694] >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054776] Pid: 7962, comm: >> umount >> >>> Not tainted 2.6.37-plus_v16_zcache #4 FMP55/ipower G3710 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.054912] RIP: >> >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055084] RSP: >> >>> 0018:ffff88023c77d6f8 =A0EFLAGS: 00010246 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055173] RAX: 00000000000000ff >> >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055265] RDX: ffff88023c77d734 >> >>> RSI: ffff88023c77d768 RDI: 0000000000000006 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055357] RBP: 0000030341ed0000 >> >>> R08: ffffffff8133eef0 R09: ffff88023c77d8d8 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055448] R10: 0000000000000003 >> >>> R11: 0000000000000001 R12: 00000000ffffffff >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055540] R13: ffff88023cde0030 >> >>> R14: ffffea0007dd39f0 R15: 0000000000000001 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055633] FS: >> >>> 00007fb1cad04760(0000) GS:ffff8800bf580000(0000) >> >>> knlGS:0000000000000000 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055762] CS: =A00010 DS: 0000 = ES: >> >>> 0000 CR0: 000000008005003b >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055851] CR2: 0000030341ed0050 >> >>> CR3: 000000023c7d5000 CR4: 00000000000006e0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.055943] DR0: 0000000000000000 >> >>> DR1: 0000000000000000 DR2: 0000000000000000 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056035] DR3: 0000000000000000 >> >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056128] Process umount (pid: >> >>> 7962, threadinfo ffff88023c77c000, task ffff88023c7a4260) >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056257] Stack: >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056338] =A00000000000000000 >> >>> 0000000000000002 ffff880200000000 0000000000000003 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056630] =A0ffffea0007dd39f0 >> >>> ffffffff810e6aaa ffff880200000041 0000000600000246 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.056922] =A0ffff88023cdcd300 >> >>> ffffffff810e6b3a 0000000000000001 ffffffff8132bb7c >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057213] Call Trace: >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057301] =A0[<ffffffff810e6aaa= >] >> ? >> >>> cleancache_get_key+0x4a/0x60 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057393] =A0[<ffffffff810e6b3a= >] >> ? >> >>> __cleancache_get_page+0x7a/0xd0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057487] =A0[<ffffffff8132bb7c= >] >> ? >> >>> merge_state+0x7c/0x150 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057579] =A0[<ffffffff8132e4de= >] >> ? >> >>> __extent_read_full_page+0x52e/0x710 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057673] =A0[<ffffffff813bdea4= >] >> ? >> >>> rb_insert_color+0xa4/0x140 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057766] =A0[<ffffffff8134b0b6= >] >> ? >> >>> tree_insert+0x86/0x1e0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.057859] =A0[<ffffffff81058c73= >] >> ? >> >>> lock_timer_base.clone.22+0x33/0x70 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058004] =A0[<ffffffff81305060= >] >> ? >> >>> btree_get_extent+0x0/0x1c0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058097] =A0[<ffffffff81330b21= >] >> ? >> >>> read_extent_buffer_pages+0x2d1/0x470 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058191] =A0[<ffffffff81305060= >] >> ? >> >>> btree_get_extent+0x0/0x1c0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058283] =A0[<ffffffff8130674d= >] >> ? >> >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058415] =A0[<ffffffff813076f9= >] >> ? >> >>> read_tree_block+0x39/0x60 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058508] =A0[<ffffffff812ed5e6= >] >> ? >> >>> read_block_for_search.clone.40+0x116/0x410 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058638] =A0[<ffffffff812eb228= >] >> ? >> >>> btrfs_cow_block+0x118/0x2b0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058731] =A0[<ffffffff812f0bc7= >] >> ? >> >>> btrfs_search_slot+0x307/0xa00 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058823] =A0[<ffffffff812f6b18= >] >> ? >> >>> lookup_inline_extent_backref+0x98/0x4a0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.058919] =A0[<ffffffff810e33d7= >] >> ? >> >>> kmem_cache_alloc+0x87/0xa0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059032] =A0[<ffffffff812f891c= >] >> ? >> >>> __btrfs_free_extent+0xcc/0x6f0 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059125] =A0[<ffffffff812fc4cf= >] >> ? >> >>> run_clustered_refs+0x39f/0x880 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059220] =A0[<ffffffff810b1f98= >] >> ? >> >>> pagevec_lookup_tag+0x18/0x20 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059312] =A0[<ffffffff810a7c81= >] >> ? >> >>> filemap_fdatawait_range+0x91/0x180 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059405] =A0[<ffffffff812fca77= >] >> ? >> >>> btrfs_run_delayed_refs+0xc7/0x220 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059498] =A0[<ffffffff8130c29c= >] >> ? >> >>> btrfs_commit_transaction+0x7c/0x760 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059591] =A0[<ffffffff81067ea0= >] >> ? >> >>> autoremove_wake_function+0x0/0x30 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059683] =A0[<ffffffff8130cdef= >] >> ? >> >>> start_transaction+0x1bf/0x270 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059775] =A0[<ffffffff8110e96a= >] >> ? >> >>> __sync_filesystem+0x5a/0x90 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059867] =A0[<ffffffff810eae8d= >] >> ? >> >>> generic_shutdown_super+0x2d/0x100 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.059960] =A0[<ffffffff810eafb9= >] >> ? >> >>> kill_anon_super+0x9/0x50 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060051] =A0[<ffffffff810eb266= >] >> ? >> >>> deactivate_locked_super+0x26/0x80 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060144] =A0[<ffffffff811043ea= >] >> ? >> >>> sys_umount+0x7a/0x390 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060235] =A0[<ffffffff810027bb= >] >> ? >> >>> system_call_fastpath+0x16/0x1b >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.060325] Code: 55 b8 ff 00 00 >> 00 >> >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 >> 00 >> >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 >> 00 >> >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063170] RIP >> =A0[<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063302] =A0RSP >> <ffff88023c77d6f8> >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063386] CR2: 0000030341ed0050 >> >>> Feb 14 02:05:52 lupus kernel: [ =A0 70.063528] ---[ end trace >> >>> 3313552d105b1535 ]--- >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.961960] BUG: unable to handle >> >>> kernel paging request at 0000030341ed0050 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962171] IP: >> [<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962307] PGD 0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962430] Oops: 0000 [#2] >> PREEMPT SMP >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962637] last sysfs file: >> >>> /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962766] CPU 5 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.962812] Modules linked in: >> >>> ipt_REJECT ipt_LOG xt_limit xt_tcpudp xt_state nf_nat_irc >> >>> nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >> >>> nf_conntrack_ftp iptable_filter ipt_addrtype xt_DSCP xt_dscp >> >>> xt_iprange ip_tables ip6table_filter xt_NFQUEUE xt_owner >> xt_hashlimit >> >>> xt_conntrack xt_mark xt_multiport xt_connmark nf_conntrack >> xt_string >> >>> ip6_tables x_tables it87 hwmon_vid coretemp snd_seq_dummy >> snd_seq_oss >> >>> snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss >> >>> snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel >> snd_hda_codec >> >>> snd_hwdep snd_pcm snd_timer snd i2c_i801 soundcore wmi shpchp >> e1000e >> >>> snd_page_alloc libphy e1000 scsi_wait_scan sl811_hcd ohci_hcd ssb >> >>> usb_storage ehci_hcd [last unloaded: tg3] >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966044] >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966127] Pid: 7915, comm: >> >>> btrfs-transacti Tainted: G =A0 =A0 =A0D =A0 =A0 2.6.37-plus_v16_zcac= he #4 >> >>> FMP55/ipower G3710 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966266] RIP: >> >>> 0010:[<ffffffff8133ef1b>] =A0[<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966440] RSP: >> >>> 0018:ffff88023c63b6e0 =A0EFLAGS: 00010246 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966528] RAX: 00000000000000ff >> >>> RBX: ffff88023cde0168 RCX: 0000000000000000 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966620] RDX: ffff88023c63b71c >> >>> RSI: ffff88023c63b750 RDI: 0000000000000006 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966713] RBP: 0000030341ed0000 >> >>> R08: ffffffff8133eef0 R09: ffff88023c63b8c0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966805] R10: 0000000000000003 >> >>> R11: 0000000000000001 R12: 00000000ffffffff >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966897] R13: ffff88023cde0030 >> >>> R14: ffffea0007d59bc8 R15: 0000000000000001 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.966990] FS: >> >>> 0000000000000000(0000) GS:ffff8800bf540000(0000) >> >>> knlGS:0000000000000000 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967120] CS: =A00010 DS: 0000 = ES: >> >>> 0000 CR0: 000000008005003b >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967209] CR2: 0000030341ed0050 >> >>> CR3: 0000000001c27000 CR4: 00000000000006e0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967302] DR0: 0000000000000000 >> >>> DR1: 0000000000000000 DR2: 0000000000000000 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967394] DR3: 0000000000000000 >> >>> DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967500] Process btrfs- >> transacti >> >>> (pid: 7915, threadinfo ffff88023c63a000, task ffff88023c7a1620) >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967630] Stack: >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.967711] =A00000000000000000 >> >>> 0000000000000002 0000000000000000 0000000000000003 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968057] =A0ffffea0007d59bc8 >> >>> ffffffff810e6aaa 0000000000000041 0000000600000002 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968348] =A00000000000000000 >> >>> ffffffff810e6b3a 0000000000000001 ffffffff00000001 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968639] Call Trace: >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968728] =A0[<ffffffff810e6aaa= >] >> ? >> >>> cleancache_get_key+0x4a/0x60 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968820] =A0[<ffffffff810e6b3a= >] >> ? >> >>> __cleancache_get_page+0x7a/0xd0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.968914] =A0[<ffffffff8132e4de= >] >> ? >> >>> __extent_read_full_page+0x52e/0x710 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969008] =A0[<ffffffff812f3f93= >] >> ? >> >>> update_reserved_bytes+0xb3/0x140 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969102] =A0[<ffffffff81305060= >] >> ? >> >>> btree_get_extent+0x0/0x1c0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969193] =A0[<ffffffff8132bb7c= >] >> ? >> >>> merge_state+0x7c/0x150 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969285] =A0[<ffffffff81330b21= >] >> ? >> >>> read_extent_buffer_pages+0x2d1/0x470 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969378] =A0[<ffffffff81305060= >] >> ? >> >>> btree_get_extent+0x0/0x1c0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969470] =A0[<ffffffff8130674d= >] >> ? >> >>> btree_read_extent_buffer_pages.clone.65+0x4d/0xa0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969602] =A0[<ffffffff813076f9= >] >> ? >> >>> read_tree_block+0x39/0x60 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969694] =A0[<ffffffff812ed5e6= >] >> ? >> >>> read_block_for_search.clone.40+0x116/0x410 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969878] =A0[<ffffffff812f0bc7= >] >> ? >> >>> btrfs_search_slot+0x307/0xa00 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.969970] =A0[<ffffffff812f6b18= >] >> ? >> >>> lookup_inline_extent_backref+0x98/0x4a0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970065] =A0[<ffffffff810e33d7= >] >> ? >> >>> kmem_cache_alloc+0x87/0xa0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970157] =A0[<ffffffff812f891c= >] >> ? >> >>> __btrfs_free_extent+0xcc/0x6f0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970249] =A0[<ffffffff812f8434= >] >> ? >> >>> update_block_group.clone.62+0xc4/0x280 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970343] =A0[<ffffffff812fc4cf= >] >> ? >> >>> run_clustered_refs+0x39f/0x880 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970436] =A0[<ffffffff812fca77= >] >> ? >> >>> btrfs_run_delayed_refs+0xc7/0x220 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970529] =A0[<ffffffff810e15f9= >] >> ? >> >>> new_slab+0x169/0x1f0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970619] =A0[<ffffffff8130c29c= >] >> ? >> >>> btrfs_commit_transaction+0x7c/0x760 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970713] =A0[<ffffffff81067ea0= >] >> ? >> >>> autoremove_wake_function+0x0/0x30 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970806] =A0[<ffffffff81305bc3= >] >> ? >> >>> transaction_kthread+0x283/0x2a0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970898] =A0[<ffffffff81305940= >] >> ? >> >>> transaction_kthread+0x0/0x2a0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.970990] =A0[<ffffffff81305940= >] >> ? >> >>> transaction_kthread+0x0/0x2a0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971083] =A0[<ffffffff81067a16= >] >> ? >> >>> kthread+0x96/0xa0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971174] =A0[<ffffffff81003514= >] >> ? >> >>> kernel_thread_helper+0x4/0x10 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971266] =A0[<ffffffff81067980= >] >> ? >> >>> kthread+0x0/0xa0 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971355] =A0[<ffffffff81003510= >] >> ? >> >>> kernel_thread_helper+0x0/0x10 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.971444] Code: 55 b8 ff 00 00 >> 00 >> >>> 53 48 89 fb 48 83 ec 18 48 8b 6f 10 8b 3a 83 ff 04 0f 86 d5 00 00 >> 00 >> >>> 85 c9 0f 95 c1 83 ff 07 0f 86 d5 00 00 00 <48> 8b 45 50 bf 05 00 00 >> 00 >> >>> 48 89 06 84 c9 48 8b 85 68 fe ff ff >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974280] RIP >> =A0[<ffffffff8133ef1b>] >> >>> btrfs_encode_fh+0x2b/0x120 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974412] =A0RSP >> <ffff88023c63b6e0> >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974497] CR2: 0000030341ed0050 >> >>> Feb 14 02:06:16 lupus kernel: [ =A0 93.974599] ---[ end trace >> >>> 3313552d105b1536 ]--- >> >>> Feb 14 02:07:04 lupus kernel: [ =A0141.906124] zcache: destroyed poo= l >> id=3D2 >> >>> Feb 14 02:07:17 lupus kernel: [ =A0154.783358] SysRq : Keyboard mode >> set >> >>> to system default >> >>> Feb 14 02:07:18 lupus kernel: [ =A0155.486147] SysRq : Terminate All >> Tasks >> >>> >> >>> >> >>> That's all for now >> >>> >> >>> Thanks & Regards >> >>> >> >>> Matt >> >>> >> >> >> >> (leaving out several folks from the CC to avoid spamming - if I left >> >> out someone wrongfully please re-add) >> >> >> >> running an addr2line reveals: >> >> >> >> >> >> addr2line -e /usr/src/linux-2.6.37_vanilla/vmlinux -i >> ffffffff81338cbb >> >> export.c:0 >> >> >> >> >> >> hope that helps >> >> >> >> >> >> Regards >> >> >> >> Matt >> >> >> > >> > Just my guessing. I might be wrong. >> > >> > __cleancache_flush_inode calls cleancache_get_key with >> cleancache_filekey. >> > cleancache_file_key's size is just 6 * u32. >> > cleancache_get_key calls btrfs_encode_fh with the key. >> > but btrfs_encode_fh does typecasting the key to btrfs_fid which is >> > bigger size than cleancache_filekey's one so it should not access >> > fields beyond cleancache_get_key. >> > >> > I think some file systems use extend fid so in there, this problem >> can >> > happen. I don't know why we can't find it earlier. Maybe Dan and >> > others test it for a long time. >> > >> > Am I missing something? >> > >> > >> > >> > -- >> > Kind regards, >> > Minchan Kim >> > >> >> reposting Minchan's message for reference to the btrfs mailing list >> while also adding >> >> Li Zefan, Miao Xie, Yan Zheng, Dan Rosenberg and Josef Bacik to CC >> >> Regards >> >> Matt > > Hi Matt and Minchan -- > > (BTRFS EXPERTS SEE *** BELOW) > > I definitely see a bug in cleancache_get_key in the monolithic > zcache+cleancache+frontswap patch I posted on oss.oracle.com > that is corrected in linux-next but I don't see how it could > get provoked by btrfs. > > The bug is that, in cleancache_get_key, the return value of fhfn should > be checked against 255. =A0If the return value is 255, cleancache_get_key > should return -1. =A0This should disable cleancache for any filesystem > where KEY_MAX is too large. > > But cleancache_get_key always calls fhfn with connectable =3D=3D 0 and > CLEANCACHE_KEY_MAX=3D=3D6 should be greater than BTRFS_FID_SIZE_CONNECTAB= LE > (which I think should be 5?). =A0And the elements written into the > typecast btrfs_fid should be only writing the first 5 32-bit words. > > So if the problem is the one Minchan suggests, I am confused. =A0Matt, > can you first confirm that you are using the cleancache patches from > my monolithic patch from oss.oracle.com (which I think you are)? > > *** > > Looking over the stacktrace and the code, I have an alternate theory. > I wonder if it is ever possible the inode->dentry list is empty > (or corrupt)? =A0list_first_entry() assumes the list is non-empty. > If this is possible and unusual, maybe my testing didn't see the > problem? > > Thanks, > Dan > > P.S. For those new to cleancache, the code is in linux-next here: > http://git.kernel.org/?p=3Dlinux/kernel/git/sfr/linux-next.git;a=3Dblob;f= =3Dmm/cleancache.c;h=3Df545eb8f11180cfb3aaf3f4f85a5255be8f9f881;hb=3Da57cb3= bc013d2e262a663df50af6a9e7cc88bdad > Hi Dan, yeah, I downloaded the monolithic patch you mentioned in the original message (http://marc.info/?l=3Dlinux-kernel&m=3D129705217700769&w=3D2) and use that. Just checked the file's md5sum on my harddrive against the one from http://oss.oracle.com/projects/tmem/files/zcache/ and it's the same file (119d91d81d99fdf3b95919e6012d5fa8). If you could point out where to download the latest versions of each of the (broken-out) patches for frontswap, cleancache and zcache - or simply the updated ones needed - I'd give them another test run (read: try to use them for everyday tasks). Currently I've V5 of Cleancache, and V3 of Frontswap in addition to V2 of Zcache on my harddrive - I don't know if those are the most current ones available. Thanks Matt -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression 2011-02-16 1:27 ` Dan Magenheimer 2011-02-16 1:58 ` Matt @ 2011-02-16 4:36 ` Minchan Kim 2011-03-03 17:29 ` Dan Magenheimer 1 sibling, 1 reply; 6+ messages in thread From: Minchan Kim @ 2011-02-16 4:36 UTC (permalink / raw) To: Dan Magenheimer Cc: Matt, gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan On Wed, Feb 16, 2011 at 10:27 AM, Dan Magenheimer <dan.magenheimer@oracle.com> wrote: >> -----Original Message----- >> From: Matt [mailto:jackdachef@gmail.com] >> Sent: Tuesday, February 15, 2011 5:12 PM >> To: Minchan Kim >> Cc: Dan Magenheimer; gregkh@suse.de; Chris Mason; linux- >> kernel@vger.kernel.org; linux-mm@kvack.org; ngupta@vflare.org; linux= - >> btrfs@vger.kernel.org; Josef Bacik; Dan Rosenberg; Yan Zheng; >> miaox@cn.fujitsu.com; Li Zefan >> Subject: Re: [PATCH V2 0/3] drivers/staging: zcache: dynamic page >> cache/swap compression >> >> On Mon, Feb 14, 2011 at 4:35 AM, Minchan Kim <minchan.kim@gmail.com> >> > Just my guessing. I might be wrong. >> > >> > __cleancache_flush_inode calls cleancache_get_key with >> cleancache_filekey. >> > cleancache_file_key's size is just 6 * u32. >> > cleancache_get_key calls btrfs_encode_fh with the key. >> > but btrfs_encode_fh does typecasting the key to btrfs_fid which is >> > bigger size than cleancache_filekey's one so it should not access >> > fields beyond cleancache_get_key. >> > >> > I think some file systems use extend fid so in there, this problem >> can >> > happen. I don't know why we can't find it earlier. Maybe Dan and >> > others test it for a long time. >> > >> > Am I missing something? >> > >> > >> > >> > -- >> > Kind regards, >> > Minchan Kim >> > >> >> reposting Minchan's message for reference to the btrfs mailing list >> while also adding >> >> Li Zefan, Miao Xie, Yan Zheng, Dan Rosenberg and Josef Bacik to CC >> >> Regards >> >> Matt > > Hi Matt and Minchan -- > > (BTRFS EXPERTS SEE *** BELOW) > > I definitely see a bug in cleancache_get_key in the monolithic > zcache+cleancache+frontswap patch I posted on oss.oracle.com > that is corrected in linux-next but I don't see how it could > get provoked by btrfs. > > The bug is that, in cleancache_get_key, the return value of fhfn shou= ld > be checked against 255. =C2=A0If the return value is 255, cleancache_= get_key > should return -1. =C2=A0This should disable cleancache for any filesy= stem > where KEY_MAX is too large. > > But cleancache_get_key always calls fhfn with connectable =3D=3D 0 an= d > CLEANCACHE_KEY_MAX=3D=3D6 should be greater than BTRFS_FID_SIZE_CONNE= CTABLE > (which I think should be 5?). =C2=A0And the elements written into the > typecast btrfs_fid should be only writing the first 5 32-bit words. BTRFS_FID_SIZE_NON_CONNECTALBE is 5, not BTRFS_FID_SIZE_CONNECTABLE. Anyway, you passed connectable with 0 so it should be only writing the first 5 32-bit words as you said. That's one I missed. ;-) Thanks. --=20 Kind regards, Minchan Kim ^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: [PATCH V2 0/3] drivers/staging: zcache: dynamic page cache/swap compression 2011-02-16 4:36 ` Minchan Kim @ 2011-03-03 17:29 ` Dan Magenheimer 0 siblings, 0 replies; 6+ messages in thread From: Dan Magenheimer @ 2011-03-03 17:29 UTC (permalink / raw) To: Minchan Kim Cc: Matt, gregkh, Chris Mason, linux-kernel, linux-mm, ngupta, linux-btrfs, Josef Bacik, Dan Rosenberg, Yan Zheng, miaox, Li Zefan > > I definitely see a bug in cleancache_get_key in the monolithic > > zcache+cleancache+frontswap patch I posted on oss.oracle.com > > that is corrected in linux-next but I don't see how it could > > get provoked by btrfs. > > > > The bug is that, in cleancache_get_key, the return value of fhfn > should > > be checked against 255. =C2=A0If the return value is 255, > cleancache_get_key > > should return -1. =C2=A0This should disable cleancache for any filesyst= em > > where KEY_MAX is too large. > > > > But cleancache_get_key always calls fhfn with connectable =3D=3D 0 and > > CLEANCACHE_KEY_MAX=3D=3D6 should be greater than > BTRFS_FID_SIZE_CONNECTABLE > > (which I think should be 5?). =C2=A0And the elements written into the > > typecast btrfs_fid should be only writing the first 5 32-bit words. >=20 > BTRFS_FID_SIZE_NON_CONNECTALBE is 5, not BTRFS_FID_SIZE_CONNECTABLE. > Anyway, you passed connectable with 0 so it should be only writing the > first 5 32-bit words as you said. > That's one I missed. ;-) >=20 > Thanks. > -- > Kind regards, > Minchan Kim Sorry, I realized that I solved this with Matt offlist and never posted the solution on-list, so for the archives: This patch applies on top of the cleancache patch. It is really a horrible hack but solving it correctly requires the interface to encode_fh ops to change, which would require changes to many filesystems, so best saved for a later time. If/when cleancache gets merged, this patch will need to be applied on top of it for btrfs to work properly when cleancache is enabled. Basically, the problem is that, in all current filesystems, obtaining the filehandle requires a dentry ONLY if connectable is set. Otherwise, the dentry is only used to get the inode. But cleancache_get_key only has an inode, and the alias list of dentries associated with the inode may be empty. So either the encode_fh interface would need to be changed or, in this hack-y solution, a dentry is created temporarily only for the purpose of dereferencing it. Signed-off-by: Dan Magenheimer <dan.magenheimer@oracle.com> diff -Napur -X linux-2.6.37.1/Documentation/dontdiff linux-2.6.37.1/mm/clea= ncache.c linux-2.6.37.1-fix/mm/cleancache.c --- linux-2.6.37.1/mm/cleancache.c=092011-02-25 11:38:47.000000000 -0800 +++ linux-2.6.37.1-fix/mm/cleancache.c=092011-02-25 08:53:46.000000000 -080= 0 @@ -78,15 +78,14 @@ static int cleancache_get_key(struct ino =09int (*fhfn)(struct dentry *, __u32 *fh, int *, int); =09int maxlen =3D CLEANCACHE_KEY_MAX; =09struct super_block *sb =3D inode->i_sb; -=09struct dentry *d; =20 =09key->u.ino =3D inode->i_ino; =09if (sb->s_export_op !=3D NULL) { =09=09fhfn =3D sb->s_export_op->encode_fh; =09=09if (fhfn) { -=09=09=09d =3D list_first_entry(&inode->i_dentry, -=09=09=09=09=09=09struct dentry, d_alias); -=09=09=09(void)(*fhfn)(d, &key->u.fh[0], &maxlen, 0); +=09=09=09struct dentry d; +=09=09=09d.d_inode =3D inode; +=09=09=09(void)(*fhfn)(&d, &key->u.fh[0], &maxlen, 0); =09=09=09if (maxlen > CLEANCACHE_KEY_MAX) =09=09=09=09return -1; =09=09} -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> ^ permalink raw reply [flat|nested] 6+ messages in thread
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