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

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,
2007/6/6, Christoph Lameter <[email protected]>:
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 <[email protected]>
---
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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux