Hi all, I compiled 2.6.35 kernel with CONFIG_MTD=y and i am using the SMP i686 machine with Ubuntu 10.04 Lucid operating system. The steps i followed and the dmesg tail output are as follows: 1. sudo modprobe logfs 2. sudo modprobe mtd 3. sudo modprobe mtdblock 4. sudo modprobe nandsim first_id_byte=0x20 second_id_byte=0xaa third_id_byte=0x00 fourth_id_byte=0x25 5. sudo flash_eraseall /dev/mtd0 6. sudo logfsprogs/mklogfs /dev/mtd0 I downloaded logfsprogs from "http://logfs-tools.sourcearchive.com/"; 7. sudo mount -t logfs /dev/mtdblock0 /mnt/flash_drive/ 8. df -h 9. sudo cp file.txt /mnt/flash_drive/ 10. cat /mnt/flash_drive/file.txt 11. sudo umount /mnt/flash_drive/ Segmentation fault. tail of the dmesg: [ 143.155682] NAND device: Manufacturer ID: 0x20, Chip ID: 0xaa (ST Micro NAND 256MiB 1,8V 8-bit) [ 143.155691] flash size: 256 MiB [ 143.155696] page size: 2048 bytes [ 143.155700] OOB area size: 64 bytes [ 143.155703] sector size: 256 KiB [ 143.155707] pages number: 131072 [ 143.155710] pages per sector: 128 [ 143.155713] bus width: 8 [ 143.155717] bits in sector size: 18 [ 143.155720] bits in page size: 11 [ 143.155724] bits in OOB size: 6 [ 143.155728] flash size with OOB: 270336 KiB [ 143.155733] page address bytes: 5 [ 143.155737] sector address bytes: 3 [ 143.155740] options: 0x8 [ 143.159059] Scanning device for bad blocks [ 143.160749] Creating 1 MTD partitions on "NAND 256MiB 1,8V 8-bit": [ 143.160755] 0x000000000000-0x000010000000 : "NAND simulator partition 0" [ 247.650884] LogFS: Start mount 0 [ 247.657105] LogFS: Finished mounting [ 306.735432] LogFS: Start unmounting [ 306.748837] LogFS: Now in shutdown [ 306.748998] ------------[ cut here ]------------ [ 306.749007] kernel BUG at fs/logfs/readwrite.c:1986! [ 306.749013] invalid opcode: 0000 [#1] SMP [ 306.749021] last sysfs file: /sys/devices/virtual/mtd/mtd0/size [ 306.749027] Modules linked in: mtdchar nandsim nand nand_ids nand_ecc mtdblock mtd_blkdevs logfs zlib_deflate binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc fbcon tileblit font snd_intel8x0 snd_ac97_codec bitblit softcursor ac97_bus i915 snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy drm_kms_helper snd_seq_oss ppdev parport_pc drm lp snd_seq_midi snd_rawmidi parport snd_seq_midi_event snd_seq snd_timer psmouse snd_seq_device snd i2c_algo_bit e1000 intel_agp joydev floppy usbhid agpgart video output serio_raw hid shpchp soundcore snd_page_alloc [ 306.749123] [ 306.749128] Pid: 1672, comm: umount Not tainted 2.6.35 #7 D865GBF / [ 306.749133] EIP: 0060:[<f84867a2>] EFLAGS: 00010202 CPU: 1 [ 306.749143] EIP is at logfs_clear_inode+0x62/0x70 [logfs] [ 306.749146] EAX: f4066840 EBX: f5e04e00 ECX: 00000000 EDX: 00000000 [ 306.749150] ESI: f52a9ed4 EDI: 00000000 EBP: f52a9e98 ESP: f52a9e94 [ 306.749154] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 306.749158] Process umount (pid: 1672, ti=f52a8000 task=f5fb0cb0 task.ti=f52a8000) [ 306.749162] Stack: [ 306.749164] f4066840 f52a9ea8 c021d27c ffffffff f4066840 f52a9ec0 c021d327 f5e04e70 [ 306.749177] <0> f4066840 f4066850 f5e04e70 f52a9ee8 c021d774 f5e04e70 00000000 00000001 [ 306.749190] <0> f52a9ed4 f52a9ed4 f5e04e00 f848c1a0 c07b7cfc f52a9f00 c020ac22 f52a9f00 [ 306.749205] Call Trace: [ 306.749216] [<c021d27c>] ? clear_inode+0x7c/0x100 [ 306.749221] [<c021d327>] ? dispose_list+0x27/0x100 [ 306.749226] [<c021d774>] ? invalidate_inodes+0xf4/0x120 [ 306.749232] [<c020ac22>] ? generic_shutdown_super+0x42/0xd0 [ 306.749239] [<c0596aa2>] ? printk+0x1d/0x23 [ 306.749247] [<f848a0e6>] ? logfs_kill_sb+0x46/0xd0 [logfs] [ 306.749252] [<c020b65d>] ? deactivate_locked_super+0x3d/0x60 [ 306.749257] [<c020be90>] ? deactivate_super+0x50/0x70 [ 306.749263] [<c02206ff>] ? mntput_no_expire+0x8f/0xd0 [ 306.749269] [<c0220a15>] ? sys_umount+0x65/0x340 [ 306.749274] [<c0220d0e>] ? sys_oldumount+0x1e/0x20 [ 306.749280] [<c0102fe3>] ? sysenter_do_call+0x12/0x28 [ 306.749283] Code: ff ff 85 c0 74 29 8d 76 00 e8 2b e0 ff ff 5b 5d c3 8b 4a 74 89 d8 8d 76 00 ff 51 04 5b 5d c3 0f 0b eb fe 83 78 28 00 66 90 74 bc <0f> 0b eb fe 0f 0b eb fe 8d b6 00 00 00 00 55 89 e5 57 56 53 83 [ 306.749362] EIP: [<f84867a2>] logfs_clear_inode+0x62/0x70 [logfs] SS:ESP 0068:f52a9e94 [ 306.749404] ---[ end trace df7ecb1adf27c946 ]--- [ 306.749410] ------------[ cut here ]------------ [ 306.749418] WARNING: at kernel/exit.c:896 do_exit+0x64a/0x730() [ 306.749423] Hardware name: [ 306.749427] Modules linked in: mtdchar nandsim nand nand_ids nand_ecc mtdblock mtd_blkdevs logfs zlib_deflate binfmt_misc vboxnetadp vboxnetflt vboxdrv nfsd exportfs nfs lockd nfs_acl auth_rpcgss sunrpc fbcon tileblit font snd_intel8x0 snd_ac97_codec bitblit softcursor ac97_bus i915 snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy drm_kms_helper snd_seq_oss ppdev parport_pc drm lp snd_seq_midi snd_rawmidi parport snd_seq_midi_event snd_seq snd_timer psmouse snd_seq_device snd i2c_algo_bit e1000 intel_agp joydev floppy usbhid agpgart video output serio_raw hid shpchp soundcore snd_page_alloc [ 306.749577] Pid: 1672, comm: umount Tainted: G D 2.6.35 #7 [ 306.749582] Call Trace: [ 306.749592] [<c0149b62>] warn_slowpath_common+0x72/0xa0 [ 306.749599] [<c014deaa>] ? do_exit+0x64a/0x730 [ 306.749606] [<c014deaa>] ? do_exit+0x64a/0x730 [ 306.749613] [<c0149bb2>] warn_slowpath_null+0x22/0x30 [ 306.749620] [<c014deaa>] do_exit+0x64a/0x730 [ 306.749628] [<c014ab21>] ? kmsg_dump+0x121/0x130 [ 306.749635] [<c0596aa2>] ? printk+0x1d/0x23 [ 306.749643] [<c059ab35>] oops_end+0x95/0xd0 [ 306.749652] [<c0105ce4>] die+0x54/0x80 [ 306.749659] [<c059a246>] do_trap+0x96/0xc0 [ 306.749666] [<c0103d10>] ? do_invalid_op+0x0/0xa0 [ 306.749673] [<c0103d9b>] do_invalid_op+0x8b/0xa0 [ 306.749685] [<f84867a2>] ? logfs_clear_inode+0x62/0x70 [logfs] [ 306.749694] [<c01cb6ce>] ? find_get_pages+0x2e/0xf0 [ 306.749702] [<c01d42e0>] ? pagevec_lookup+0x20/0x30 [ 306.749710] [<c01d5581>] ? truncate_inode_pages_range+0x141/0x2d0 [ 306.749718] [<c0599fc3>] error_code+0x73/0x80 [ 306.749728] [<f848007b>] ? logfs_rename_target+0x3b/0x3a0 [logfs] [ 306.749739] [<f84867a2>] ? logfs_clear_inode+0x62/0x70 [logfs] [ 306.749747] [<c021d27c>] clear_inode+0x7c/0x100 [ 306.749755] [<c021d327>] dispose_list+0x27/0x100 [ 306.749762] [<c021d774>] invalidate_inodes+0xf4/0x120 [ 306.749769] [<c020ac22>] generic_shutdown_super+0x42/0xd0 [ 306.749777] [<c0596aa2>] ? printk+0x1d/0x23 [ 306.749787] [<f848a0e6>] logfs_kill_sb+0x46/0xd0 [logfs] [ 306.749795] [<c020b65d>] deactivate_locked_super+0x3d/0x60 [ 306.749802] [<c020be90>] deactivate_super+0x50/0x70 [ 306.749811] [<c02206ff>] mntput_no_expire+0x8f/0xd0 [ 306.749818] [<c0220a15>] sys_umount+0x65/0x340 [ 306.749826] [<c0220d0e>] sys_oldumount+0x1e/0x20 [ 306.749833] [<c0102fe3>] sysenter_do_call+0x12/0x28 [ 306.749839] ---[ end trace df7ecb1adf27c947 ]--- Please let me know if i am missing anything. Thanks, Mugunthan -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
