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48bdf072c3
linux/net
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Chris Metcalf 48bdf072c3 ip_options_compile: properly handle unaligned pointer 
The current code takes an unaligned pointer and does htonl() on it to
make it big-endian, then does a memcpy().  The problem is that the
compiler decides that since the pointer is to a __be32, it is legal
to optimize the copy into a processor word store.  However, on an
architecture that does not handled unaligned writes in kernel space,
this produces an unaligned exception fault.

The solution is to track the pointer as a "char *" (which removes a bunch
of unpleasant casts in any case), and then just use put_unaligned_be32()
to write the value to memory.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: David S. Miller <davem@zippy.davemloft.net>
2011-05-31 15:11:02 -07:00
..
9p Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
802 snap: remove one synchronize_net() 2011-05-23 16:29:24 -04:00
8021q net:8021q:vlan.c Fix pr_info to just give the vlan fullname and version. 2011-05-26 14:55:51 -04:00
appletalk
atm atm: expose ATM device index in sysfs 2011-05-27 13:07:21 -04:00
ax25
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2011-05-23 09:10:03 -07:00
bridge Merge branch 'pablo/nf-2.6-updates' of git://1984.lsi.us.es/net-2.6 2011-05-27 13:04:40 -04:00
caif caif: Plug memory leak for checksum error 2011-05-22 20:11:49 -04:00
can can: convert to %pK for kptr_restrict support 2011-05-26 14:23:35 -04:00
ceph libceph: fix ceph_osdc_alloc_request error checks 2011-05-03 09:28:13 -07:00
core net: Kill ratelimit.h dependency in linux/net.h 2011-05-27 13:41:33 -04:00
dcb
dccp ipv4: Make caller provide flowi4 key to inet_csk_route_req(). 2011-05-18 18:32:03 -04:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
dns_resolver
dsa Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2011-05-05 14:59:02 -07:00
econet
ethernet
ieee802154
ipv4 ip_options_compile: properly handle unaligned pointer 2011-05-31 15:11:02 -07:00
ipv6 net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
ipx
irda irda: Fix error propagation in ircomm_lmp_connect_response() 2011-05-19 18:58:39 -04:00
iucv convert old cpumask API into new one 2011-05-13 14:55:21 -04:00
key net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
lapb
llc
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 2011-05-27 15:18:35 -04:00
netfilter IPVS: bug in ip_vs_ftp, same list heaad used in all netns. 2011-05-27 13:37:46 +02:00
netlabel Remove prefetch() from <linux/skbuff.h> and "netlabel_addrlist.h" 2011-05-22 21:43:41 -07:00
netlink net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
netrom
packet net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
phonet net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
rds
rfkill net: rfkill: add generic gpio rfkill driver 2011-05-19 13:53:54 -04:00
rose
rxrpc rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport() 2011-05-19 18:51:50 -04:00
sched sch_sfq: fix peek() implementation 2011-05-25 17:55:32 -04:00
sctp sctp: fix memory leak of the ASCONF queue when free asoc 2011-05-25 17:55:32 -04:00
sunrpc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-05-23 09:12:26 -07:00
tipc tipc: Revise timings used when sending link request messages 2011-05-10 16:04:02 -04:00
unix net: convert %p usage to %pK 2011-05-24 01:13:12 -04:00
wanrouter
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem 2011-05-27 15:18:35 -04:00
x25
xfrm Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6 2011-05-11 14:26:58 -04:00
compat.c net: Add sendmmsg socket system call 2011-05-05 11:10:14 -07:00
Kconfig bpf: depends on MODULES 2011-04-29 10:20:53 -07:00
Makefile
nonet.c
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-05-20 13:43:21 -07:00
sysctl_net.c
TUNABLE