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aha/net
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Andy Grover 86357b19bc RDS: Fix potential race around rds_i[bw]_allocation 
"At rds_ib_recv_refill_one(), it first executes atomic_read(&rds_ib_allocation)
for if-condition checking,

and then executes atomic_inc(&rds_ib_allocation) if the condition was
not satisfied.

However, if any other code which updates rds_ib_allocation executes
between these two atomic operation executions,
it seems that it may result race condition. (especially when
rds_ib_allocation + 1 == rds_ib_sysctl_max_recv_allocation)"

This patch fixes this by using atomic_inc_unless to eliminate the
possibility of allocating more than rds_ib_sysctl_max_recv_allocation
and then decrementing the count if the allocation fails. It also
makes an identical change to the iwarp transport.

Reported-by: Shin Hong <hongshin@gmail.com>
Signed-off-by: Andy Grover <andy.grover@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-10-30 15:06:38 -07:00
..
9p virtio: add virtio IDs file 2009-09-23 22:26:32 +09:30
802 net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
8021q vlan: cleanup multiple unregistrations 2009-10-29 23:43:00 -07:00
appletalk net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
atm net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
ax25 ax25: unsigned cannot be less than 0 in ax25_ctl_ioctl() 2009-10-29 23:06:39 -07:00
bluetooth Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-27 01:03:26 -07:00
bridge bridge: Optimize multiple unregistration 2009-10-29 01:13:48 -07:00
can net: Cleanup redundant tests on unsigned 2009-10-29 01:39:54 -07:00
core net: Allow devices to specify a device specific sysfs group. 2009-10-30 12:41:18 -07:00
dcb net: fix double skb free in dcbnl 2009-09-26 20:16:15 -07:00
dccp net: Fix for dst_negative_advice 2009-10-20 18:55:46 -07:00
decnet net: Fix for dst_negative_advice 2009-10-20 18:55:46 -07:00
dsa netdev: convert pseudo-devices to netdev_tx_t 2009-09-01 01:13:07 -07:00
econet econet: Fix redeclaration of symbol len 2009-10-07 14:43:04 -07:00
ethernet net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
ieee802154 net: sk_drops consolidation 2009-10-14 20:40:11 -07:00
ipv4 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-29 21:28:59 -07:00
ipv6 Allow tcp_parse_options to consult dst entry 2009-10-29 01:28:41 -07:00
ipx net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
irda net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
iucv af_iucv: remove duplicate sock_set_flag 2009-10-17 23:57:20 -07:00
key net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
lapb net: remove NET_RX_BAD and NET_RX_CN* defines 2009-07-05 19:15:35 -07:00
llc net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
mac80211 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-29 21:28:59 -07:00
netfilter inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
netlabel Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-30 19:22:43 -07:00
netlink genetlink: Optimize and one bug fix in genl_generate_id() 2009-10-17 23:57:26 -07:00
netrom net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
packet Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-29 21:28:59 -07:00
phonet Phonet: hold socket before giving it to sk_deliver_skb() 2009-10-15 12:30:42 -07:00
rds RDS: Fix potential race around rds_i[bw]_allocation 2009-10-30 15:06:38 -07:00
rfkill headers: remove sched.h from poll.h 2009-10-04 15:05:10 -07:00
rose net: mark net_proto_ops as const 2009-10-07 01:10:46 -07:00
rxrpc net: Generalize socket rx gap / receive queue overflow cmsg 2009-10-12 13:26:31 -07:00
sched pkt_sched: skbedit add support for setting mark 2009-10-22 21:56:42 -07:00
sctp inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
sunrpc inet: rename some inet_sock fields 2009-10-18 18:52:53 -07:00
tipc net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
unix Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-27 01:03:26 -07:00
wanrouter headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wimax wimax: fix warning caused by not checking retval of rfkill_set_hw_state() 2009-06-11 11:12:48 -07:00
wireless Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-10-29 21:28:59 -07:00
x25 net: Cleanup redundant tests on unsigned 2009-10-29 01:39:53 -07:00
xfrm xfrm: remove skb_icv_walk 2009-10-18 21:32:01 -07:00
compat.c net: Cleanup redundant tests on unsigned 2009-10-29 01:39:54 -07:00
Kconfig net/compat/wext: send different messages to compat tasks 2009-07-15 08:53:39 -07:00
Makefile net: remove redundant sched/ in net/Makefile 2009-07-12 20:11:14 -07:00
nonet.c
socket.c net: Introduce recvmmsg socket syscall 2009-10-12 23:40:10 -07:00
sysctl_net.c net: sysctl_net - use net_eq to compare nets 2009-03-16 16:23:30 +01:00
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