Re: Sleeping in illegal context with 2.5.65-mm2

Greg KH
2003-03-20T04:40:51Z

On Thu, Mar 20, 2003 at 03:58:41AM +0100, Alexander Hoogerhuis wrote:
> Caught this one while booting my laptop:
>
> drivers/usb/core/usb.c: registered new driver hci_usb
> Module bluetooth cannot be unloaded due to unsafe usage in include/linux/module.h:457
> Debug: sleeping function called from illegal context at mm/slab.c:1723
> Call Trace:
> [<c0119d92>] __might_sleep+0x5f/0x65
> [<c013a097>] kmalloc+0x88/0x8f
> [<c0238111>] usb_alloc_urb+0x21/0x51
> [<f09180bc>] hci_usb_enable_intr+0x20/0xf8 [hci_usb]

The call to usb_alloc_urb() here is being done with the GFP_ATOMIC flag,
which is correct. Do we need to fix up the warning message to prevent
false positives like this from happening?

thanks,

greg k-h