Hi, Sandeep, On Sun, Sep 20, 2009 at 9:25 PM, SandeepKsinha <sandeepksinha@xxxxxxxxx> wrote: > Hi Akira/others, > > I hit the following assert kernel BUG at fs/ext4/move_extent.c:1317! > > The file I was playing around with was a simple holey file created like: > > [/mnt] > [18:35:13 sinhas]$ dd if=/dev/zero of=/mnt/ext4image seek=1000 count=5 > 5+0 records in > 5+0 records out > 2560 bytes (2.6 kB) copied, 0.000146457 s, 17.5 MB/s > > I am using v2.6.31. I have seen some patchsets a couple of days from > you. Does any of them address any similar problem.? Yes. The BUG_ON is unnecessary and is removed in the latest mainline kernel. Please refer to commit daea696dbac0e33af3cfe304efbfb8d74e0effe6 for details. > > Are there any prerequisites for the userspace clients of > EXT4_IOC_MOVE_EXT? Apart from having the offsets equal for orig and > donor inode. > The userspace program (part of OHSM) invoking the ioctl could be found at: > http://ohsm.git.sourceforge.net/git/gitweb.cgi?p=ohsm/mkatiyar/.git;a=blob;f=userspace/relocate.c;h=ea0fa184ce4e692258a671cb0b9ace7a77b9fee9;hb=refs/heads/ohsm_next#l367 > > [22145.440009] ------------[ cut here ]------------ > [22145.440019] kernel BUG at fs/ext4/move_extent.c:1317! > [22145.440031] invalid opcode: 0000 [#10] SMP > [22145.440044] last sysfs file: > /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/ieee80211/phy0/rfkill2/state > [22145.440059] Modules linked in: ohsm ext4 jbd2 crc16 af_packet ppdev > rfcomm bridge stp bnep sco l2cap ipv6 pci_slot sbs sbshc container > binfmt_misc autofs4sbp2 lp parport snd_hda_codec_analog snd_hda_intel > snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy > snd_seq_oss snd_seq_midi arc4 snd_rawmidi ecb joydev > snd_seq_midi_event snd_seq iwlagn snd_timer iwlcore snd_seq_device > mac80211 pcmcia snd btusb thinkpad_acpi led_class iTCO_wdt bluetooth > cfg80211 psmouse yenta_socket rsrc_nonstatic pcmcia_core soundcore > snd_page_alloc iTCO_vendor_support rfkill intel_agp agpgart pcspkr > serio_raw wmi evdev nvram video output ac battery button processor > ext3 jbd mbcache sr_mod cdrom sg ata_generic pata_acpi ohci1394 > ata_piix ieee1394 ehci_hcd uhci_hcd e1000e usbcore linear thermal fan > fuse > [22145.440314] > [22145.440325] Pid: 7064, comm: ohsm Tainted: G D (2.6.31 #2) 7665AD6 > [22145.440336] EIP: 0060:[<f8722829>] EFLAGS: 00210246 CPU: 0 > [22145.440402] EIP is at ext4_move_extents+0x409/0x1600 [ext4] > [22145.440412] EAX: fff8307e EBX: 00000000 ECX: ec2a7e30 EDX: ffffffff > [22145.440425] ESI: f3b09ef0 EDI: 0000007d EBP: f3b09e88 ESP: f3b09da8 > [22145.440435] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > [22145.440448] Process ohsm (pid: 7064, ti=f3b08000 task=f6083240 > task.ti=f3b08000) > [22145.440456] Stack: > [22145.440463] f3b09e2c f8188be3 f3d59400 00000000 00000001 f3b09dd0 > ecce4ac0 f3d59400 > [22145.440489] <0> 00000000 f3d59402 00000000 f3f8ac68 f3b09e78 > f6307400 f5a2a500 00000001 > [22145.440515] <0> f61ecc00 f3b09e54 c149c640 c149c780 00000000 > 0007d9ff 0007d000 f6307400 > [22145.440544] Call Trace: > [22145.440576] [<f8188be3>] ? do_get_write_access+0x763/0xab0 [jbd2] > [22145.440640] [<f8711707>] ? __ext4_handle_dirty_metadata+0x47/0x1a0 [ext4] > [22145.440664] [<c0375c83>] ? security_capable+0x33/0x50 > [22145.440720] [<f86e1463>] ? ext4_ioctl+0x273/0xfa0 [ext4] > [22145.440779] [<f870b3c6>] ? ext4_fallocate+0x5f6/0x610 [ext4] > [22145.440835] [<f86e11f0>] ? ext4_ioctl+0x0/0xfa0 [ext4] > [22145.440852] [<c02ca2ed>] ? vfs_ioctl+0x3d/0x110 > [22145.440866] [<c028660f>] ? page_referenced+0x1cf/0x320 > [22145.440883] [<c02cab71>] ? do_vfs_ioctl+0x5f1/0xae0 > [22145.440897] [<c02ace42>] ? do_fallocate+0x172/0x210 > [22145.440913] [<c02cb106>] ? sys_ioctl+0xa6/0x100 > [22145.440927] [<c0104bdc>] ? sysenter_do_call+0x12/0x28 > [22145.440943] [<c028660f>] ? page_referenced+0x1cf/0x320 > [22145.440951] Code: ba 75 f8 00 0f 0b eb fe 66 90 83 05 78 ba 75 f8 > 01 83 15 7c ba 75 f8 00 e9 56 fd ff ff 83 05 78 bd 75 f8 01 83 15 7c > bd 75 f8 00 <0f> 0beb fe 8b 5d c8 8b 43 20 8b 5d cc 3b 43 20 74 35 8b > 45 c8 > [22145.441098] EIP: [<f8722829>] ext4_move_extents+0x409/0x1600 [ext4] > SS:ESP 0068:f3b09da8 > [22145.441193] ---[ end trace 67bb7ca457a8d69b ]--- > [/mnt] > [18:35:13 sinhas]$ > > > -- > Regards, > Sandeep. > > > > > > > “To learn is to change. Education is a process that changes the learner.” > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Cheers, Peng Tao State Key Laboratory of Networking and Switching Technology Beijing Univ. of Posts and Telecoms. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
