--- On Sat, 3/9/11, Pavel Ivanov <paivanof@xxxxxxxxx> wrote: > Hi, > > With kernel 3.1.0-rc4 any attempt to connect iPod to USB > leads to > kernel oops. I'd say that stacktrace of the oops is pretty > much random > and not related to HFS. But I was able to get useful info > from it when > I recompiled with CONFIG_SLUB_DEBUG_ON=y. In this case I > don't get > oops but the following instead: There are a few hfsplus related changes to do protection against invalid data like this, but may be there are more. It would be useful to have the output from your objdump -l -d hfsplus.ko | grep -A 1000 '<hfsplus_fill_super>' (the -l gives line numbers against the kernel tree, so would be useful if you run this against the ko there...) > > [ 81.508807] hfs: filesystem size too > large. > [ 81.559295] > ============================================================================= > [ 81.656965] BUG kmalloc-4096: Invalid > object pointer 0xffff880136160400 > [ 81.735947] > ----------------------------------------------------------------------------- > [ 81.735948] > [ 81.851359] INFO: Slab 0xffffea0004d85800 > objects=7 used=7 fp=0x > (null) flags=0x2000000000004081 > [ 81.965628] Pid: 2086, comm: > ipod-set-info Not tainted 3.1.0-rc4+ #2 > [ 81.965629] Call Trace: > [ 81.965636] > [<ffffffff8119359f>] slab_err+0xaf/0xd0 > [ 81.965640] > [<ffffffff8119381f>] ? slab_pad_check+0xaf/0x1a0 > [ 81.965644] > [<ffffffff8119719f>] > free_debug_processing+0x1ef/0x310 > [ 81.965647] > [<ffffffff811974ba>] __slab_free+0x1fa/0x490 > [ 81.965653] > [<ffffffffa0516c4d>] ? hfsplus_fill_super+0x2ed/0x610 > [hfsplus] > [ 81.965656] > [<ffffffff81197a3c>] kfree+0x12c/0x150 > [ 81.965660] > [<ffffffffa0516c4d>] hfsplus_fill_super+0x2ed/0x610 > [hfsplus] > [ 81.965665] > [<ffffffff81438771>] ? > ioctl_internal_command.clone.4+0x61/0x1b0 > [ 81.965671] > [<ffffffff8161fe9e>] ? _raw_spin_unlock+0xe/0x40 > [ 81.965675] > [<ffffffff81195eb8>] ? deactivate_slab+0x578/0x750 > [ 81.965679] > [<ffffffff811af3cb>] ? sget+0xab/0x480 > [ 81.965683] > [<ffffffff8133f0c9>] ? put_dec+0x59/0x60 > [ 81.965685] > [<ffffffff813407d1>] ? number.clone.2+0x311/0x350 > [ 81.965690] > [<ffffffff8116bd7b>] ? pcpu_alloc_area+0x10b/0x2c0 > [ 81.965693] > [<ffffffff81341b81>] ? vsnprintf+0x471/0x610 > [ 81.965696] > [<ffffffff8116c639>] ? pcpu_alloc+0x399/0x9e0 > [ 81.965699] > [<ffffffff81341dc4>] ? snprintf+0x34/0x40 > [ 81.965702] > [<ffffffff8133ebc6>] ? strlcpy+0x46/0x60 > [ 81.965707] > [<ffffffff8115bfb2>] ? register_shrinker+0x52/0x60 > [ 81.965710] > [<ffffffff811afa26>] mount_bdev+0x1c6/0x210 > [ 81.965714] > [<ffffffffa0516960>] ? hfsplus_iget+0x240/0x240 > [hfsplus] > [ 81.965718] > [<ffffffffa05160a5>] hfsplus_mount+0x15/0x20 > [hfsplus] > [ 81.965720] > [<ffffffff811b0547>] mount_fs+0x47/0x1c0 > [ 81.965723] > [<ffffffff8116cc90>] ? __alloc_percpu+0x10/0x20 > [ 81.965727] > [<ffffffff811ca383>] vfs_kern_mount+0x63/0xd0 > [ 81.965731] > [<ffffffff811cb4d4>] do_kern_mount+0x54/0x110 > [ 81.965734] > [<ffffffff811cd022>] do_mount+0x502/0x7e0 > [ 81.965736] > [<ffffffff8116738b>] ? strndup_user+0x5b/0x80 > [ 81.965739] > [<ffffffff811cd710>] sys_mount+0x90/0xe0 > [ 81.965744] > [<ffffffff81627402>] system_call_fastpath+0x16/0x1b > [ 81.965746] FIX kmalloc-4096: Object at > 0xffff880136160400 not freed > > Following by 2 other bugs with the same stack trace. > > (BTW, before oops first message "hfs: filesystem size too > large" > always appears twice.) > > > Another question: is hfsplus supposed to work at all? I see > it's > marked as "Orphaned" in MAINTAINERS and on attempt to > connect iPod > with kernel 2.6.38.11 (standard kernel in Ubuntu 11.04) I > still don't > get it working. Although without oops I get the following > messages: > > [ 65.479360] usb 2-3: new high speed USB > device using ehci_hcd and address 4 > [ 65.686470] usbcore: registered new > interface driver uas > [ 65.706455] Initializing USB Mass Storage > driver... > [ 65.706901] scsi4 : usb-storage 2-3:1.0 > [ 65.707251] usbcore: registered new > interface driver usb-storage > [ 65.707254] USB Mass Storage support > registered. > [ 66.702320] scsi 4:0:0:0: > Direct-Access Apple > iPod > 1.62 PQ: 0 ANSI: 0 > [ 66.704537] sd 4:0:0:0: Attached scsi > generic sg2 type 0 > [ 66.809047] sd 4:0:0:0: [sdb] 1946049 > 4096-byte logical blocks: > (7.97 GB/7.42 GiB) > [ 66.809930] sd 4:0:0:0: [sdb] Write > Protect is off > [ 66.809935] sd 4:0:0:0: [sdb] Mode Sense: > 68 00 00 08 > [ 66.809938] sd 4:0:0:0: [sdb] Assuming > drive cache: write through > [ 66.885037] sd 4:0:0:0: [sdb] 1946049 > 4096-byte logical blocks: > (7.97 GB/7.42 GiB) > [ 66.885933] sd 4:0:0:0: [sdb] Assuming > drive cache: write through > [ 66.979400] sdb: [mac] sdb1 sdb2 > [ 66.981940] sd 4:0:0:0: [sdb] 1946049 > 4096-byte logical blocks: > (7.97 GB/7.42 GiB) > [ 66.982834] sd 4:0:0:0: [sdb] Assuming > drive cache: write through > [ 67.055808] sd 4:0:0:0: [sdb] Attached > SCSI removable disk > [ 67.299357] sd 4:0:0:0: [sdb] Bad block > number requested > [ 67.362982] hfs: unable to find HFS+ > superblock > [ 67.499457] sd 4:0:0:0: [sdb] Bad block > number requested > [ 67.563085] hfs: unable to find HFS+ > superblock > > > Thank you, > Pavel > -- > 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 > -- 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
