Re: [BUG] 2.6.22-rc3-mm1 remove bluetooth usb adapter caused kmalloc bug

["young dave" <hidave.darkstar@gmail.com>]

Hi,
>2007/6/6, Christoph Lameter <clameter@sgi.com>:
> Note that the corruption seems to have its cause in a decrement done at
> offset 16 into the object pointing to the refcount in struct hci_dev. So
> it looks like the refcount was decremented after the object was freed.
>
> sysfs related?
>
I noticed in hci_core.c:

hci_dev_close call hci_dev_do_close , then call hci_dev_put

but in hci_dev_do_close  also call hci_dev_put

Maybe this is the reason, by apply the below patch the bug seems
doesn't exist,  but the strange thing is the 2.4.22-rc4 seems works, I
will test once more to see the result.

Signed-off-by: dave young <hidave.darkstar@gmail.com>
---
 net/bluetooth/hci_core.c |    1 -
 1 file changed, 1 deletion(-)

diff -dur linux/net/bluetooth/hci_core.c linux.new/net/bluetooth/hci_core.c
--- linux/net/bluetooth/hci_core.c      2007-06-06 13:47:14.000000000 +0000
+++ linux.new/net/bluetooth/hci_core.c  2007-06-06 13:46:58.000000000 +0000
@@ -577,7 +577,6 @@

        hci_req_unlock(hdev);

-       hci_dev_put(hdev);
        return 0;
 }

Regards
dave