Hi, I was ripping a CD when the FLAC encoder hung. Ps showed it in a "D" wait (high-priority, uninterruptible, "short-term" wait, usually for disk I/O, hence the "D"). Running ls in the directory holding its (FLAC's) output files led it to hang similarly. The kernel logs revealed the problem (word wrap off to preserve long lines): -==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==- Oct 13 09:36:45 twain kernel: ------------[ cut here ]------------ Oct 13 09:36:45 twain kernel: kernel BUG at fs/reiserfs/file.c:623! Oct 13 09:36:45 twain kernel: invalid operand: 0000 [#1] Oct 13 09:36:45 twain kernel: SMP Oct 13 09:36:45 twain kernel: Modules linked in: iptable_filter ip_tables hfsplus vfat fat udf nls_utf8 speedstep_lib freq_table ipv6 snd_pcm_oss snd_mixer_osssnd_seq_midi snd_seq_midi_event snd_seq button battery ac usblp usbhid usb_storage edd snd_cs46xx gameport snd_rawmidi snd_seq_device snd_ac97_codec ohci1394 ieee1394 snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc e100 mii i2c_i801 i2c_core generic intel_agp agpgart shpchp pci_hotplug ehci_hcd uhci_hcd usbcore parport_pc lp parport subfs reiserfs dm_mod xfs exportfs fan thermal processor aic7xxx scsi_transport_spi sg ata_piix libata ide_cd cdrom piix sd_mod scsi_mod ide_disk ide_core Oct 13 09:36:45 twain kernel: CPU: 0 Oct 13 09:36:45 twain kernel: EIP: 0060:[<f9639013>] Not tainted VLI Oct 13 09:36:45 twain kernel: EFLAGS: 00210242 (2.6.13-15-smp) Oct 13 09:36:45 twain kernel: EIP is at reiserfs_allocate_blocks_for_region+0x13e3/0x13f0 [reiserfs] Oct 13 09:36:45 twain kernel: eax: 4000081d ebx: 00000000 ecx: d6141ea4 edx: c1514f80 Oct 13 09:36:45 twain kernel: esi: 00000000 edi: 00000003 ebp: d92bb834 esp: d6141d28 Oct 13 09:36:45 twain kernel: ds: 007b es: 007b ss: 0068 Oct 13 09:36:45 twain kernel: Process flac (pid: 8531, threadinfo=d6140000 task=f688f540) Oct 13 09:36:45 twain kernel: Stack: f748f900 c82fec80 00000008 00000003 d92bb7cc c0173485 00000001 c11244e0 Oct 13 09:36:45 twain kernel: f748f900 d6141f48 00f8b001 00000000 c9bf7870 c82fec80 00000000 00000000 Oct 13 09:36:45 twain kernel: 000005b0 000005b0 00f8b001 00000000 00000000 f748f8b0 c9227000 d6141ea4 Oct 13 09:36:45 twain kernel: Call Trace: Oct 13 09:36:45 twain kernel: [<c0173485>] alloc_page_buffers+0x75/0xc0 Oct 13 09:36:45 twain kernel: [<c018c8bf>] inode_update_time+0x3f/0xc0 Oct 13 09:36:45 twain kernel: [<f963a879>] reiserfs_file_write+0x749/0x760 [reiserfs] Oct 13 09:36:45 twain kernel: [<f96f6f03>] linvfs_aio_read+0x83/0xb0 [xfs] Oct 13 09:36:45 twain kernel: [<c011e8f5>] activate_task+0x95/0xb0 Oct 13 09:36:45 twain kernel: [<c011efc6>] try_to_wake_up+0x76/0x340 Oct 13 09:36:45 twain kernel: [<c03446b9>] schedule+0x5a9/0xc00 Oct 13 09:36:45 twain kernel: [<c03446e7>] schedule+0x5d7/0xc00 Oct 13 09:36:45 twain kernel: [<f963a130>] reiserfs_file_write+0x0/0x760 [reiserfs] Oct 13 09:36:45 twain kernel: [<c017126f>] vfs_write+0xaf/0x190 Oct 13 09:36:45 twain kernel: [<c0171401>] sys_write+0x41/0x70 Oct 13 09:36:45 twain kernel: [<c01042ab>] sysenter_past_esp+0x54/0x79 Oct 13 09:36:45 twain kernel: Code: 9d 00 00 0f 0b 6c 02 d1 9f 65 f9 e9 12 f7 ff ff 8b 54 24 20 b9 b0 b4 65 f9 8b 82 a0 00 00 00 89 4c 24 04 89 04 24 e8 cd 9d 00 00 <0f> 0b 6f 02 d1 9f 65 f9 e9 f8 f6 ff ff 83 ec 10 85 d2 89 7c 24 Oct 13 09:36:45 twain kernel: Badness in do_exit at kernel/exit.c:790 Oct 13 09:36:45 twain kernel: [<c0128e08>] do_exit+0x3b8/0x3c0 Oct 13 09:36:45 twain kernel: [<c0105ddf>] die+0x18f/0x190 Oct 13 09:36:45 twain kernel: [<c0106110>] do_invalid_op+0x0/0xb0 Oct 13 09:36:45 twain kernel: [<c01061b5>] do_invalid_op+0xa5/0xb0 Oct 13 09:36:45 twain kernel: [<f9639013>] reiserfs_allocate_blocks_for_region+0x13e3/0x13f0 [reiserfs] Oct 13 09:36:45 twain kernel: [<c010552f>] error_code+0x4f/0x60 Oct 13 09:36:45 twain kernel: [<f9639013>] reiserfs_allocate_blocks_for_region+0x13e3/0x13f0 [reiserfs] Oct 13 09:36:45 twain kernel: [<c0173485>] alloc_page_buffers+0x75/0xc0 Oct 13 09:36:45 twain kernel: [<c018c8bf>] inode_update_time+0x3f/0xc0 Oct 13 09:36:45 twain kernel: [<f963a879>] reiserfs_file_write+0x749/0x760 [reiserfs] Oct 13 09:36:45 twain kernel: [<f96f6f03>] linvfs_aio_read+0x83/0xb0 [xfs] Oct 13 09:36:45 twain kernel: [<c011e8f5>] activate_task+0x95/0xb0 Oct 13 09:36:45 twain kernel: [<c011efc6>] try_to_wake_up+0x76/0x340 Oct 13 09:36:45 twain kernel: [<c03446b9>] schedule+0x5a9/0xc00 Oct 13 09:36:45 twain kernel: [<c03446e7>] schedule+0x5d7/0xc00 Oct 13 09:36:45 twain kernel: [<f963a130>] reiserfs_file_write+0x0/0x760 [reiserfs] Oct 13 09:36:45 twain kernel: [<c017126f>] vfs_write+0xaf/0x190 Oct 13 09:36:45 twain kernel: [<c0171401>] sys_write+0x41/0x70 Oct 13 09:36:45 twain kernel: [<c01042ab>] sysenter_past_esp+0x54/0x79 -==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==--==- This is a new SATA drive (300 GB) with little on it, so far. It's the only Reiser file system on this box (all others are XFS). I'm inclined to reboot, check / repair the file system, save the files onto another drive, reformat with a more reliable file system and go on from there. Any ideas? Randall Schulz