linux/drivers/net/usb
Sebastian Siewior 4231d47e6f net/usbnet: avoid recursive locking in usbnet_stop()
|kernel BUG at kernel/rtmutex.c:724!
|[<c029599c>] (rt_spin_lock_slowlock+0x108/0x2bc) from [<c01c2330>] (defer_bh+0x1c/0xb4)
|[<c01c2330>] (defer_bh+0x1c/0xb4) from [<c01c3afc>] (rx_complete+0x14c/0x194)
|[<c01c3afc>] (rx_complete+0x14c/0x194) from [<c01cac88>] (usb_hcd_giveback_urb+0xa0/0xf0)
|[<c01cac88>] (usb_hcd_giveback_urb+0xa0/0xf0) from [<c01e1ff4>] (musb_giveback+0x34/0x40)
|[<c01e1ff4>] (musb_giveback+0x34/0x40) from [<c01e2b1c>] (musb_advance_schedule+0xb4/0x1c0)
|[<c01e2b1c>] (musb_advance_schedule+0xb4/0x1c0) from [<c01e2ca8>] (musb_cleanup_urb.isra.9+0x80/0x8c)
|[<c01e2ca8>] (musb_cleanup_urb.isra.9+0x80/0x8c) from [<c01e2ed0>] (musb_urb_dequeue+0xec/0x108)
|[<c01e2ed0>] (musb_urb_dequeue+0xec/0x108) from [<c01cbb90>] (unlink1+0xbc/0xcc)
|[<c01cbb90>] (unlink1+0xbc/0xcc) from [<c01cc2ec>] (usb_hcd_unlink_urb+0x54/0xa8)
|[<c01cc2ec>] (usb_hcd_unlink_urb+0x54/0xa8) from [<c01c2a84>] (unlink_urbs.isra.17+0x2c/0x58)
|[<c01c2a84>] (unlink_urbs.isra.17+0x2c/0x58) from [<c01c2b44>] (usbnet_terminate_urbs+0x94/0x10c)
|[<c01c2b44>] (usbnet_terminate_urbs+0x94/0x10c) from [<c01c2d68>] (usbnet_stop+0x100/0x15c)
|[<c01c2d68>] (usbnet_stop+0x100/0x15c) from [<c020f718>] (__dev_close_many+0x94/0xc8)

defer_bh() takes the lock which is hold during unlink_urbs(). The safe
walk suggest that the skb will be removed from the list and this is done
by defer_bh() so it seems to be okay to drop the lock here.

Cc: stable@kernel.org
Reported-by: Aníbal Almeida Pinto <anibal.pinto@efacec.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-08 00:49:29 -08:00
..
asix.c asix: fix setting custom MAC address on Asix 88178 devices 2012-01-10 14:59:48 -08:00
catc.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
cdc_eem.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
cdc_ether.c Move Logitech Harmony 900 from cdc_ether to zaurus 2012-02-22 15:50:23 -05:00
cdc_ncm.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-01-09 14:46:52 -08:00
cdc_subset.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
cdc-phonet.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2012-01-07 12:03:30 -08:00
cx82310_eth.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
dm9601.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
gl620a.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
hso.c hso: memsetting wrong data in hso_get_count() 2012-02-22 15:31:54 -05:00
int51x1.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
ipheth.c ipheth: Add iPhone 4S 2012-02-15 14:50:16 -05:00
kalmia.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
kaweth.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
Kconfig MII: fix Kconfig dependencies for MII 2011-09-15 15:49:08 -04:00
lg-vl600.c Merge branch 'driver-core-next' into Linux 3.2 2012-01-06 11:42:52 -08:00
Makefile net/usb: Add Samsung Kalmia driver for Samsung GT-B3730 2011-06-16 21:57:49 -04:00
mcs7830.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
net1080.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
pegasus.c usb: pegasus: cleanup a couple conditions 2011-12-23 16:51:18 -05:00
pegasus.h
plusb.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
rndis_host.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
rtl8150.c USB: convert drivers/net/* to use module_usb_driver() 2011-11-18 09:44:20 -08:00
sierra_net.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-01-09 14:46:52 -08:00
smsc75xx.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2012-01-07 12:03:30 -08:00
smsc75xx.h
smsc95xx.c Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core 2012-01-07 12:03:30 -08:00
smsc95xx.h
usbnet.c net/usbnet: avoid recursive locking in usbnet_stop() 2012-03-08 00:49:29 -08:00
zaurus.c Move Logitech Harmony 900 from cdc_ether to zaurus 2012-02-22 15:50:23 -05:00