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SubjectRe: 2.6.32.1: BUG and panic: unable to handle kernel NULL pointer dereference at 000000000000001f
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Peter Palfrader <weasel@debian.org> writes:


> [ 5.304749] BUG: unable to handle kernel NULL pointer dereference at 000000000000001f
> ..
> [ 5.308739] Call Trace:
> [ 5.308739] [<ffffffff810c3840>] kstrdup+0x40/0x70
> [ 5.308739] [<ffffffff81150d77>] sysfs_new_dirent+0xf7/0x110
> [ 5.308739] [<ffffffff8115121d>] create_dir+0x3d/0xc0
> [ 5.308739] [<ffffffff81090af1>] ? autoremove_wake_function+0x11/0x40
> [ 5.308739] [<ffffffff811512d4>] sysfs_create_dir+0x34/0x50
> [ 5.308739] [<ffffffff8138e7ea>] ? kobject_get+0x1a/0x30
> [ 5.308739] [<ffffffff8138e961>] kobject_add_internal+0xe1/0x1e0
> [ 5.308739] [<ffffffff8138eb78>] kobject_add_varg+0x38/0x60
> [ 5.308739] [<ffffffff8138ec15>] kobject_init_and_add+0x75/0x90
> [ 5.308739] [<ffffffff81150560>] ? sysfs_ilookup_test+0x0/0x20
> [ 5.308739] [<ffffffff8115082d>] ? sysfs_find_dirent+0x2d/0x40
> [ 5.308739] [<ffffffff81150ec1>] ? sysfs_addrm_finish+0x21/0x250
> [ 5.308739] [<ffffffff8138e7ea>] ? kobject_get+0x1a/0x30
> [ 5.308739] [<ffffffff810e6fe4>] ? kmem_cache_alloc+0x84/0xc0
> [ 5.308739] [<ffffffff814238d4>] bus_add_driver+0x94/0x260
> [ 5.308739] [<ffffffff81424ed9>] driver_register+0x79/0x160
> [ 5.308739] [<ffffffff815a28a3>] __hid_register_driver+0x43/0x80
> [ 5.308739] [<ffffffff81a3d7ff>] ? gyration_init+0x0/0x1b
> [ 5.308739] [<ffffffff81a3d818>] gyration_init+0x19/0x1b

Seems to be caused by the "gyration driver" whatever that is. Do you
have such a USB device?

It could be some module mismatch, it looks suspicious
and from a quick look the gyration driver does nothing bad
in that init path. Try a make clean and remove/rebuild/reinstall all the modules
on the target system.

If that doesn't help perhaps disable CONFIG_HID_GYRATION,
but from your other oops something more seems to be broken anyways.

> [ 5.308739] [<ffffffff81009048>] do_one_initcall+0x38/0x1a0
> [ 5.308739] [<ffffffff81a0e6b5>] kernel_init+0x172/0x1ca
> [ 5.308739] [<ffffffff81036a0a>] child_rip+0xa/0x20
> [ 5.308739] [<ffffffff81a0e543>] ? kernel_init+0x0/0x1ca
> [ 5.308739] [<ffffffff81036a00>] ? child_rip+0x0/0x20

-Andi

--
ak@linux.intel.com -- Speaking for myself only.


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