git.stricted.de - GitHub/mt8127/android_kernel_alcatel

author	Stanislaw Gruszka <sgruszka@redhat.com>
	Wed, 20 Apr 2011 13:57:14 +0000 (15:57 +0200)
committer	John W. Linville <linville@tuxdriver.com>
	Wed, 20 Apr 2011 20:05:59 +0000 (16:05 -0400)
commit	b25026981aecde3685dd0e45ad980fff9f528daa
tree	db9972ab6095d6bd57978d734810e26c733338ee	tree \| snapshot (tar.gz zip)
parent	243e6df4ed919880d079d717641ad699c6530a03	commit \| diff

iwlwifi: fix skb usage after free

Since

commit a120e912eb51e347f36c71b60a1d13af74d30e83
Author: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Fri Feb 19 15:47:33 2010 -0800

iwlwifi: sanity check before counting number of tfds can be free

we use skb->data after calling ieee80211_tx_status_irqsafe(), which
could free skb instantly.

On current kernels I do not observe practical problems related with
bug, but on 2.6.35.y it cause random system hangs when stressing
wireless link.

Cc: stable@kernel.org # 2.6.32+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>