Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=dfe6e81deaa79c85086c0cc8d85b229e444ab97f
Commit:     dfe6e81deaa79c85086c0cc8d85b229e444ab97f
Parent:     0ec0b7ac3cdfb8635d75aead5733f7a424ea4ad3
Author:     Andy Green <[EMAIL PROTECTED]>
AuthorDate: Fri Jul 27 15:43:24 2007 +0200
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Wed Oct 10 16:47:40 2007 -0700

    [MAC80211]: Add get_unaligned to ieee80211_get_radiotap_len
    
    ieee80211_get_radiotap_len() tries to dereference radiotap length without
    taking care that it is completely unaligned and get_unaligned()
    is required.
    
    Signed-off-by: Andy Green <[EMAIL PROTECTED]>
    Signed-off-by: Jiri Benc <[EMAIL PROTECTED]>
    Signed-off-by: John W. Linville <[EMAIL PROTECTED]>
---
 include/net/ieee80211_radiotap.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/include/net/ieee80211_radiotap.h b/include/net/ieee80211_radiotap.h
index 22e0477..dfd8bf6 100644
--- a/include/net/ieee80211_radiotap.h
+++ b/include/net/ieee80211_radiotap.h
@@ -40,6 +40,7 @@
 
 #include <linux/if_ether.h>
 #include <linux/kernel.h>
+#include <asm/unaligned.h>
 
 /* Radiotap header version (from official NetBSD feed) */
 #define IEEE80211RADIOTAP_VERSION      "1.5"
@@ -261,7 +262,7 @@ static inline int ieee80211_get_radiotap_len(unsigned char 
*data)
        struct ieee80211_radiotap_header *hdr =
                (struct ieee80211_radiotap_header *)data;
 
-       return le16_to_cpu(hdr->it_len);
+       return le16_to_cpu(get_unaligned(&hdr->it_len));
 }
 
 #endif                         /* IEEE80211_RADIOTAP_H */
-
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