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| author |   Lennert Buytenhek <buytenh@wantstofly.org> | 2015-07-21 17:44:47 +0300 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2015-07-30 14:08:55 +0200 |
| commit | c22ff7b4e74d8136a9911d8b8d0f25f9f7c3edc1 (patch) | |
| tree | 172c0937f69b785793e1f2e63776341833c5800b /net/mac802154/main.c | |
| parent | at86rf230: remove hrtimer on 1 usec delay (diff) | |
| download | linux-dev-c22ff7b4e74d8136a9911d8b8d0f25f9f7c3edc1.tar.xz linux-dev-c22ff7b4e74d8136a9911d8b8d0f25f9f7c3edc1.zip | |
mac802154: Fix memory corruption with global deferred transmit state.
When transmitting a packet via a mac802154 driver that can sleep in
its transmit function, mac802154 defers the call to the driver's
transmit function to a per-device workqueue.
However, mac802154 uses a single global work_struct for this, which
means that if you have more than one registered mac802154 interface
in the system, and you transmit on more than one of them at the same
time, you'll very easily cause memory corruption.
This patch moves the deferred transmit processing state from global
variables to struct ieee802154_local, and this seems to fix the memory
corruption issue.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/mac802154/main.c')
| -rw-r--r-- | net/mac802154/main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac802154/main.c b/net/mac802154/main.c index 91f120845a45..9e55431b9a5c 100644 --- a/net/mac802154/main.c +++ b/net/mac802154/main.c @@ -105,6 +105,8 @@ ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops) skb_queue_head_init(&local->skb_queue); + INIT_WORK(&local->tx_work, ieee802154_xmit_worker); + /* init supported flags with 802.15.4 default ranges */ phy->supported.max_minbe = 8; phy->supported.min_maxbe = 3; |