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c0adf54a10
linux/net/rds
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shamir rabinovitch c0adf54a10 net/rds: fix unaligned memory access 
rdma_conn_param private data is copied using memcpy after headers such
as cma_hdr (see cma_resolve_ib_udp as example). so the start of the
private data is aligned to the end of the structure that come before. if
this structure end with u32 the meaning is that the start of the private
data will be 4 bytes aligned. structures that use u8/u16/u32/u64 are
naturally aligned but in case the structure start is not 8 bytes aligned,
all u64 members of this structure will not be aligned. to solve this issue
we must use special macros that allow unaligned access to those
unaligned members.

Addresses the following kernel log seen when attempting to use RDMA:

Kernel unaligned access at TPC[10507a88] rds_ib_cm_connect_complete+0x1bc/0x1e0 [rds_rdma]

Acked-by: Chien Yen <chien.yen@oracle.com>
Signed-off-by: shamir rabinovitch <shamir.rabinovitch@oracle.com>
[Minor tweaks for top of tree by:]
Signed-off-by: David Ahern <david.ahern@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-03 23:39:01 -04:00
..
af_rds.c treewide: fix synchronize_rcu() in comments 2014-08-28 15:01:24 +02:00
bind.c net: replace macros net_random and net_srandom with direct calls to prandom 2014-01-14 15:15:25 -08:00
cong.c rds: rds_cong_queue_updates needs to defer the congestion update transmission 2015-02-11 14:35:44 -08:00
connection.c RDS: make sure not to loop forever inside rds_send_xmit 2015-04-08 15:17:32 -04:00
ib_cm.c net/rds: fix unaligned memory access 2015-05-03 23:39:01 -04:00
ib_rdma.c net: Replace get_cpu_var through this_cpu_ptr 2014-08-26 13:45:47 -04:00
ib_recv.c rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
ib_ring.c
ib_send.c net: rds: Remove repeated function names from debug output 2015-02-07 22:41:56 -08:00
ib_stats.c
ib_sysctl.c net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
ib.c rds: prevent dereference of a NULL device 2013-12-27 12:33:58 -05:00
ib.h rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
info.c rds: remove the second argument of k[un]map_atomic() 2012-03-20 21:48:28 +08:00
info.h
iw_cm.c net: rds: Remove repeated function names from debug output 2015-02-07 22:41:56 -08:00
iw_rdma.c rds: avoid potential stack overflow 2015-03-12 00:28:01 -04:00
iw_recv.c rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
iw_ring.c
iw_send.c net: rds: Remove repeated function names from debug output 2015-02-07 22:41:56 -08:00
iw_stats.c
iw_sysctl.c rds: remove the unneed NULL checking 2014-05-09 15:59:45 -04:00
iw.c rds: prevent dereference of a NULL device in rds_iw_laddr_check 2014-03-31 16:25:52 -04:00
iw.h rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
Kconfig net/rds: remove depends on CONFIG_EXPERIMENTAL 2013-01-11 11:40:02 -08:00
loop.c RDS: use gfp flags from caller in conn_alloc() 2012-03-22 19:29:58 -04:00
loop.h
Makefile
message.c rds: Make rds_message_copy_from_user() return 0 on success. 2015-02-07 22:41:56 -08:00
page.c net: Fix (nearly-)kernel-doc comments for various functions 2012-07-10 23:13:45 -07:00
rdma_transport.c RDS/RDMA: Replace comma with semicolon 2014-05-30 17:48:58 -07:00
rdma_transport.h
rdma.c rds: avoid calling sock_kfree_s() on allocation failure 2014-10-14 17:00:19 -04:00
rds.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-14 15:44:14 -04:00
recv.c net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
send.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-14 15:44:14 -04:00
stats.c net/rds: zero last byte for strncpy 2013-03-08 00:35:44 -05:00
sysctl.c net: rds: use correct size for max unacked packets and bytes 2015-02-04 16:07:27 -08:00
tcp_connect.c net/rds: do proper house keeping if connection fails in rds_tcp_conn_connect 2014-10-03 12:51:59 -07:00
tcp_listen.c rds/tcp_listen: Replace comma with semicolon 2014-05-30 17:48:58 -07:00
tcp_recv.c rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
tcp_send.c arch: Mass conversion of smp_mb__*() 2014-04-18 14:20:48 +02:00
tcp_stats.c net: rds: fix const array syntax 2011-07-01 16:16:19 -07:00
tcp.c net: Fix files explicitly needing to include module.h 2011-10-31 19:30:28 -04:00
tcp.h rds: switch ->inc_copy_to_user() to passing iov_iter 2014-11-24 05:16:43 -05:00
threads.c net/rds: call rds_conn_drop instead of open code it at rds_connect_complete 2014-10-03 12:51:59 -07:00
transport.c