linux/drivers/firewire
Clemens Ladisch 693fa7792e firewire: ohci: fix race when reading count in AR descriptor
If the controller is storing a split packet and therefore changing
d->res_count to zero between the two reads by the driver, we end up with
an end pointer that is not at a packet boundary, and therefore overflow
the buffer when handling the split packet.

To fix this, read the field once, atomically.  The compiler usually
merges the two reads anyway, but for correctness, we have to enforce it.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2010-10-30 23:37:20 +02:00
..
core-card.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-cdev.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-device.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-iso.c Merge firewire branches to be released post v2.6.35 2010-08-02 10:09:04 +02:00
core-topology.c firewire: core: fix fw_send_request kerneldoc comment 2010-07-13 09:47:47 +02:00
core-transaction.c firewire: core: do not use del_timer_sync() in interrupt context 2010-08-19 20:28:25 +02:00
core.h firewire: add isochronous multichannel reception 2010-07-29 23:09:18 +02:00
Kconfig tools/firewire: add userspace front-end of nosy 2010-07-27 11:04:11 +02:00
Makefile firewire: new driver: nosy - IEEE 1394 traffic sniffer 2010-07-27 11:04:10 +02:00
net.c firewire: net: fix unicast reception RCODE in failure paths 2010-08-19 20:28:25 +02:00
nosy-user.h firewire: nosy: endianess fixes and annotations 2010-07-27 11:04:11 +02:00
nosy.c firewire: nosy: use generic printk macros 2010-07-27 11:04:11 +02:00
nosy.h firewire: nosy: misc cleanups 2010-07-27 11:04:10 +02:00
ohci.c firewire: ohci: fix race when reading count in AR descriptor 2010-10-30 23:37:20 +02:00
ohci.h firewire: ohci: fix TI TSB82AA2 regression since 2.6.35 2010-10-17 14:09:12 +02:00
sbp2.c firewire: sbp2: fix stall with "Unsolicited response" 2010-08-19 20:28:25 +02:00