net/wireless: ipw2200: Fix panic occurring in ipw_handle_promiscuous_tx()
authorStanislav Yakovlev <stas.yakovlev@gmail.com>
Mon, 15 Oct 2012 14:14:32 +0000 (14:14 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 3 Dec 2012 19:47:23 +0000 (11:47 -0800)
commitbffeb2a91830ad2ad841b3d1203d6c7724099d8d
tree0544089721cf6ca4136a8e48029c85b77fa88d52
parent1103ef8e70a1725b7fd9e0cb18a8b1edb6e5c42d
net/wireless: ipw2200: Fix panic occurring in ipw_handle_promiscuous_tx()

commit bf11315eeda510ea4fc1a2bf972d8155d31d89b4 upstream.

The driver does not count space of radiotap fields when allocating skb for
radiotap packet. This leads to kernel panic with the following call trace:

...
[67607.676067] [<c152f90f>] error_code+0x67/0x6c
[67607.676067] [<c142f831>] ? skb_put+0x91/0xa0
[67607.676067] [<f8cf5e5b>] ? ipw_handle_promiscuous_tx+0x16b/0x2d0 [ipw2200]
[67607.676067] [<f8cf5e5b>] ipw_handle_promiscuous_tx+0x16b/0x2d0 [ipw2200]
[67607.676067] [<f8cf899b>] ipw_net_hard_start_xmit+0x8b/0x90 [ipw2200]
[67607.676067] [<f8741c5a>] libipw_xmit+0x55a/0x980 [libipw]
[67607.676067] [<c143d3e8>] dev_hard_start_xmit+0x218/0x4d0
...

This bug was found by VittGam.
https://bugzilla.kernel.org/show_bug.cgi?id=43255

Signed-off-by: Stanislav Yakovlev <stas.yakovlev@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/wireless/ipw2x00/ipw2200.c