On Sun, May 24, 2009 at 4:00 AM, Robert Hancock <hancockrwd@xxxxxxxxx> wrote: > Rafael J. Wysocki wrote: >> >> Adding CCs. >> >> On Saturday 23 May 2009, Miles Lane wrote: >>> >>> [ 865.788574] WARNING: at lib/dma-debug.c:576 >>> check_for_illegal_area+0xdb/0x105() >>> [ 865.788585] Hardware name: 1000HE >>> [ 865.788596] ata_piix 0000:00:1f.2: DMA-API: device driver maps >>> memory from kernel text or rodata [addr=c0fff000] [size=4096] >>> [ 865.788607] Modules linked in: sco bnep rfcomm l2cap pci_slot >>> snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep >>> snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss >>> snd_seq_midi_event btusb snd_seq bluetooth snd_timer snd_seq_device >>> ath9k snd soundcore snd_page_alloc atl1e >>> [ 865.788718] Pid: 1559, comm: mount.ntfs Not tainted 2.6.30-rc6-git6 #2 >>> [ 865.788727] Call Trace: >>> [ 865.788745] [<c10206f4>] warn_slowpath_common+0x65/0x7c >>> [ 865.788761] [<c11666e2>] ? check_for_illegal_area+0xdb/0x105 >>> [ 865.788777] [<c102073f>] warn_slowpath_fmt+0x24/0x27 >>> [ 865.788793] [<c11666e2>] check_for_illegal_area+0xdb/0x105 >>> [ 865.788811] [<c1167629>] debug_dma_map_sg+0x10f/0x11b >>> [ 865.788829] [<c121347e>] ata_qc_issue+0x1b0/0x233 >>> [ 865.788848] [<c1218cf0>] __ata_scsi_queuecmd+0x15a/0x1a7 >>> [ 865.788864] [<c11fde34>] ? scsi_done+0x0/0xd >>> [ 865.788879] [<c12187d4>] ? ata_scsi_rw_xlat+0x0/0x1e9 >>> [ 865.788895] [<c1218dbe>] ata_scsi_queuecmd+0x45/0x73 >>> [ 865.788909] [<c11fde34>] ? scsi_done+0x0/0xd >>> [ 865.788925] [<c11fdf6e>] scsi_dispatch_cmd+0x12d/0x165 >>> [ 865.788941] [<c1202253>] scsi_request_fn+0x299/0x3ca >>> [ 865.788956] [<c10282bf>] ? del_timer+0x47/0x4e >>> [ 865.788974] [<c11505b8>] __generic_unplug_device+0x26/0x29 >>> [ 865.788990] [<c11505ff>] generic_unplug_device+0x21/0x2f >>> [ 865.789006] [<c11516c6>] blk_unplug+0x16/0x19 >>> [ 865.789021] [<c11516d4>] blk_backing_dev_unplug+0xb/0xd >>> [ 865.789038] [<c10a57cf>] block_sync_page+0x24/0x28 >>> [ 865.789053] [<c1069728>] sync_page+0x38/0x41 >>> [ 865.789068] [<c106973a>] sync_page_killable+0x9/0x37 >>> [ 865.789085] [<c13ab475>] __wait_on_bit_lock+0x34/0x6f >>> [ 865.789099] [<c1069731>] ? sync_page_killable+0x0/0x37 >>> [ 865.789115] [<c1069613>] __lock_page_killable+0x71/0x78 >>> [ 865.789132] [<c1030d9f>] ? wake_bit_function+0x0/0x37 >>> [ 865.789147] [<c1069642>] lock_page_killable+0x28/0x2b >>> [ 865.789162] [<c106ad22>] generic_file_aio_read+0x315/0x493 >>> [ 865.789183] [<c108c36c>] do_sync_read+0xaa/0xe5 >>> [ 865.789199] [<c113181d>] ? file_has_perm+0x87/0xa1 >>> [ 865.789216] [<c1030d70>] ? autoremove_wake_function+0x0/0x2f >>> [ 865.789234] [<c112e180>] ? security_file_permission+0xf/0x11 >>> [ 865.789250] [<c108c43c>] ? rw_verify_area+0x95/0xb6 >>> [ 865.789265] [<c108c2c2>] ? do_sync_read+0x0/0xe5 >>> [ 865.789280] [<c108ca03>] vfs_read+0x8d/0xea >>> [ 865.789296] [<c108cab3>] sys_pread64+0x53/0x6b >>> [ 865.789313] [<c1002c34>] syscall_call+0x7/0xb >>> [ 865.789325] ---[ end trace 1ec3ba9a74f5a8d5 ]--- > > Well, this seems to tell us that somebody's apparently doing SCSI reads or > writes using kernel addresses. Unfortunately it doesn't really tell us where > this request came from. The stack trace occurred inside the mount.ntfs > process.. could FUSE be doing something bad? > > Was anything strange happening on the machine when this showed up? > I have just hit this again with a build of 2.6.30-rc7. I did not do anything "unusual", but it might be helpful to know that this is Ubuntu 9.10 (development) running with WUBI. WUBI uses a file mounted via loopback from an NTFS partition. This file is ~10GB and contains EXT3 root filesystem. Any debugging suggestions? Miles -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
