On Thu, Apr 29, 2010 at 2:11 AM, sniper <s3c24xx@xxxxxxxxx> wrote: > Hi all, > > I tried to reproduce the bug reported by Tomas Thiemel > (http://www.spinics.net/lists/linux-btrfs/msg04818.html) with loop > device, and caught a bug report. > > kernel: v2.6.34-rc5-279-g1600f9d > btrfs_progs: v0.19-16-g075587c > > cd /tmp > mkdir mnt0 > mkdir mnt1 > dd if=/dev/zero of=./disk0 bs=1M count=500 > cp disk0 disk1 > sudo losetup /dev/loop0 ./disk0 > sudo losetup /dev/loop1 ./disk1 > sudo mkfs.btrfs /dev/loop0 > sudo mkfs.btrfs /dev/loop1 > sudo mount -t btrfs /dev/loop0 /tmp/mnt0 > sudo chmod 777 ./mnt0 > cp something to mnt0 to make it about 90% full. > sync > sudo btrfs device add /dev/loop1 /tmp/mnt0/ > sudo btrfs device del /dev/loop0 /tmp/mnt0/ > > > > [ 62.633654] Btrfs loaded > [ 62.683562] device fsid f54c8635a7be86e1-bbbda7c901fc86bc devid 1 > transid 3244 /dev/sda3 > [ 146.235105] device fsid e6427ac6ae899005-2bbefc65da08e8e devid 1 > transid 7 /dev/loop0 > [ 283.259210] btrfs: relocating block group 465567744 flags 1 > [ 283.546271] btrfs: relocating block group 398458880 flags 1 > [ 284.081040] btrfs: found 87 extents > [ 285.807272] btrfs: found 87 extents > [ 286.011543] btrfs: relocating block group 331350016 flags 1 > [ 286.609884] btrfs: found 4238 extents > [ 288.990953] btrfs: found 4238 extents > [ 289.283116] btrfs: relocating block group 264241152 flags 1 > [ 289.905397] btrfs: found 130 extents > [ 291.474489] btrfs: found 130 extents > [ 291.646969] btrfs: relocating block group 197132288 flags 1 > [ 292.121484] btrfs: found 236 extents > [ 293.781097] btrfs: found 236 extents > [ 293.979469] btrfs: relocating block group 130023424 flags 1 > [ 294.483698] btrfs: found 208 extents > [ 296.108372] btrfs: found 208 extents > [ 296.328261] btrfs: relocating block group 62914560 flags 1 > [ 296.822185] btrfs: found 123 extents > [ 298.424613] btrfs: found 123 extents > [ 298.574020] btrfs: relocating block group 20971520 flags 34 > [ 298.659502] btrfs allocation failed flags 34, wanted 4096 > [ 298.659509] space_info has 8384512 free, is full > [ 298.659514] space_info total=8388608, pinned=0, delalloc=0, > may_use=0, used=4096, root=0, super=0, reserved=0 > [ 298.659519] block group 20971520 has 8388608 bytes, 4096 used 0 > pinned 0 reserved > [ 298.659524] entry offset 20975616, bytes 8384512, bitmap no > [ 298.659527] block group has cluster?: no > [ 298.659530] 1 blocks of free space at or bigger than bytes is > [ 298.659562] ------------[ cut here ]------------ > [ 298.659565] kernel BUG at fs/btrfs/relocation.c:2146! > [ 298.659569] invalid opcode: 0000 [#1] SMP > [ 298.659575] last sysfs file: > /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > [ 298.659579] Modules linked in: btrfs zlib_deflate crc32c libcrc32c > binfmt_misc xt_TCPMSS xt_tcpmss xt_tcpudp iptable_mangle ip_tables > x_tables pppoe pppox ppdev parport_pc snd_hda_codec_nvhdmi > snd_hda_codec_realtek snd_hda_intel fbcon tileblit snd_hda_codec font > snd_hwdep bitblit softcursor snd_pcm_oss arc4 snd_mixer_oss snd_pcm > joydev snd_seq_dummy snd_seq_oss snd_seq_midi uvcvideo nouveau > snd_rawmidi ttm drm_kms_helper sdhci_pci videodev video sdhci iwlagn > psmouse v4l1_compat output snd_seq_midi_event lp led_class iwlcore drm > intel_agp snd_seq serio_raw agpgart i2c_algo_bit parport snd_timer > snd_seq_device snd jmb38x_ms memstick soundcore snd_page_alloc > mac80211 cfg80211 usbhid ohci1394 hid usb_storage tg3 ieee1394 > [ 298.659679] > [ 298.659685] Pid: 2179, comm: btrfs Not tainted 2.6.34-rc5-custom #1 > KL1 /IdeaPad Y450 > [ 298.659691] EIP: 0060:[<f85f3b7e>] EFLAGS: 00010286 CPU: 1 > [ 298.659710] EIP is at relocate_tree_blocks+0x52e/0x590 [btrfs] > [ 298.659714] EAX: cd096dc0 EBX: cd1a83c0 ECX: cd096940 EDX: 00000000 > [ 298.659718] ESI: 00000008 EDI: cd096dc0 EBP: cd333c74 ESP: cd333c14 > [ 298.659722] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 298.659727] Process btrfs (pid: 2179, ti=cd332000 task=f6beb340 > task.ti=cd332000) > [ 298.659730] Stack: > [ 298.659733] cd096554 f6e0eb60 00000000 cd096540 01400000 00000000 > cd333c74 f6331800 > [ 298.659744] <0> cd333ccc ffffffe4 f69bbe40 00000000 ed57d570 > f6e0eb60 cd1a83fc 01000000 > [ 298.659756] <0> 00000000 d8000000 00000001 00000000 fffa2000 > 00000002 f6e0eaf0 f69bbe40 > [ 298.659768] Call Trace: > [ 298.659788] [<f85f3e0f>] ? relocate_block_group+0x22f/0x430 [btrfs] > [ 298.659807] [<f85b23d3>] ? btrfs_clean_old_snapshots+0x63/0xf0 [btrfs] > [ 298.659824] [<f85f4187>] ? btrfs_relocate_block_group+0x177/0x350 [btrfs] > [ 298.659842] [<f85d920e>] ? btrfs_relocate_chunk+0x6e/0x520 [btrfs] > [ 298.659850] [<c0130370>] ? kunmap_atomic+0x60/0x70 > [ 298.659869] [<f85cf451>] ? unmap_extent_buffer+0x11/0x20 [btrfs] > [ 298.659889] [<f85c5610>] ? btrfs_dev_extent_chunk_offset+0xe0/0xf0 [btrfs] > [ 298.659907] [<f85d996e>] ? btrfs_shrink_device+0x2ae/0x3e0 [btrfs] > [ 298.659925] [<f85d9c5d>] ? btrfs_rm_device+0x1bd/0x530 [btrfs] > [ 298.659933] [<c01cc2fb>] ? filemap_fault+0xbb/0x400 > [ 298.659939] [<c02024c3>] ? __mem_cgroup_try_charge+0x53/0x330 > [ 298.659956] [<f85e1b9d>] ? btrfs_ioctl+0x79d/0x9c0 [btrfs] > [ 298.659964] [<c01dd0d8>] ? memdup_user+0x38/0x70 > [ 298.659980] [<f85e1bbc>] ? btrfs_ioctl+0x7bc/0x9c0 [btrfs] > [ 298.659986] [<c01e28b8>] ? __do_fault+0x3e8/0x560 > [ 298.659993] [<c01e47e5>] ? handle_mm_fault+0x145/0xaa0 > [ 298.660000] [<c0215532>] ? vfs_ioctl+0x32/0xb0 > [ 298.660016] [<f85e1400>] ? btrfs_ioctl+0x0/0x9c0 [btrfs] > [ 298.660022] [<c0215c92>] ? do_vfs_ioctl+0x72/0x5c0 > [ 298.660029] [<c05a1abd>] ? do_page_fault+0x1cd/0x440 > [ 298.660035] [<c0210e3b>] ? putname+0x2b/0x40 > [ 298.660041] [<c0205e9a>] ? do_sys_open+0xfa/0x120 > [ 298.660047] [<c0216247>] ? sys_ioctl+0x67/0x80 > [ 298.660053] [<c0102fe3>] ? sysenter_do_call+0x12/0x28 > [ 298.660057] Code: 85 ff 75 db e9 49 fb ff ff 0f 0b 66 90 eb fc ba > 29 09 00 00 b8 c8 60 5f f8 e8 af 5c b5 c7 0f b6 7e 25 e9 c8 fc ff ff > 0f 0b eb fe <0f> 0b eb fe 8b 45 d4 e8 d6 1b fa ff c7 45 c4 f4 ff ff ff > e9 02 > [ 298.660124] EIP: [<f85f3b7e>] relocate_tree_blocks+0x52e/0x590 > [btrfs] SS:ESP 0068:cd333c14 > [ 298.660150] ---[ end trace fb3e62da0e52a0bd ]--- > I have sent a set of patches that address bugs like this. Yan, Zheng -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
