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Steve Wise 23a0f8cd35 svcrdma: handle rdma read with a non-zero initial page offset 
commit c91aed9896 upstream.

The server rdma_read_chunk_lcl() and rdma_read_chunk_frmr() functions
were not taking into account the initial page_offset when determining
the rdma read length.  This resulted in a read who's starting address
and length exceeded the base/bounds of the frmr.

The server gets an async error from the rdma device and kills the
connection, and the client then reconnects and resends.  This repeats
indefinitely, and the application hangs.

Most work loads don't tickle this bug apparently, but one test hit it
every time: building the linux kernel on a 16 core node with 'make -j
16 O=/mnt/0' where /mnt/0 is a ramdisk mounted via NFSRDMA.

This bug seems to only be tripped with devices having small fastreg page
list depths.  I didn't see it with mlx4, for instance.

Fixes: 0bf4828983 ('svcrdma: refactor marshalling logic')
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2015-10-27 09:51:59 +09:00
..
6lowpan 6lowpan: nhc: add other known rfc6282 compressions 2015-02-14 23:08:44 +01:00
9p 9p: ensure err is initialized to 0 in p9_client_read/write 2015-09-13 09:07:50 -07:00
802 net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
8021q vlan: Correctly propagate promisc|allmulti flags in notifier. 2015-05-14 00:54:32 -04:00
appletalk appletalk: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:37 -05:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
ax25 ax25: Fix the build when CONFIG_INET is disabled 2015-03-05 13:17:39 -05:00
batman-adv batman-adv: Fix potentially broken skb network header access 2015-10-22 14:43:24 -07:00
bluetooth Bluetooth: Delay check for conn->smp in smp_conn_security() 2015-10-22 14:43:18 -07:00
bridge bridge: fix igmpv3 / mldv2 report parsing 2015-10-03 13:49:15 +02:00
caif unix/caif: sk_socket can disappear when state is unlocked 2015-05-26 23:19:29 -04:00
can can: replace timestamp as unique skb attribute 2015-08-10 12:21:51 -07:00
ceph fs: create and use seq_show_option for escaping 2015-09-21 10:05:45 -07:00
core ethtool: Use kcalloc instead of kmalloc for ethtool_get_strings 2015-10-27 09:51:51 +09:00
dcb net/dcb: Add IEEE QCN attribute 2015-03-06 21:50:02 -05:00
dccp inet: fix possible panic in reqsk_queue_unlink() 2015-04-24 11:39:15 -04:00
decnet netfilter: Pass socket pointer down through okfn(). 2015-04-07 15:25:55 -04:00
dns_resolver Merge commit 'v3.16' into next 2014-10-01 00:44:04 +10:00
dsa net: dsa: Do not override PHY interface if already configured 2015-09-29 19:26:26 +02:00
ethernet ethernet: Use eth_<foo>_addr instead of memset 2015-03-03 17:01:38 -05:00
hsr net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface. 2015-03-01 13:40:23 -05:00
ieee802154 ieee802154: Fix sockaddr_ieee802154 implicit padding information leak. 2015-08-03 09:28:59 -07:00
ipv4 inet: fix race in reqsk_queue_unlink() 2015-10-27 09:51:50 +09:00
ipv6 ipv6: fix multipath route replace error recovery 2015-10-03 13:49:14 +02:00
ipx net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
irda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-09 23:38:02 -04:00
iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
key xfrm: simplify xfrm_address_t use 2015-03-31 13:58:35 -04:00
l2tp l2tp: protect tunnel->del_work by ref_count 2015-10-27 09:51:48 +09:00
lapb lapb: move EXPORT_SYMBOL after functions. 2014-10-24 15:51:42 -04:00
llc net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
mac80211 mac80211: enable assoc check for mesh interfaces 2015-09-29 19:25:57 +02:00
mac802154 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2015-05-09 15:51:00 -04:00
mpls mpls: handle device renames for per-device sysctls 2015-06-11 16:47:16 -07:00
netfilter ipvs: call skb_sender_cpu_clear 2015-10-22 14:43:20 -07:00
netlabel netlink: implement nla_put_in_addr and nla_put_in6_addr 2015-03-31 13:58:35 -04:00
netlink netlink: Trim skb to alloc size to avoid MSG_TRUNC 2015-10-27 09:51:52 +09:00
netrom net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
nfc nfc: nci: hci: Add check on skb nci_hci_send_cmd parameter 2015-09-29 19:25:55 +02:00
openvswitch ovs: do not allocate memory from offline numa node 2015-10-27 09:51:50 +09:00
packet packet: tpacket_snd(): fix signed/unsigned comparison 2015-09-29 19:26:24 +02:00
phonet net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
rds rds: fix an integer overflow test in rds_info_getsockopt() 2015-09-29 19:26:25 +02:00
rfkill Last round of updates for net-next: 2015-02-04 14:57:45 -08:00
rose net: Kill dev_rebuild_header 2015-03-02 16:43:41 -05:00
rxrpc new helper: msg_data_left() 2015-04-11 15:53:35 -04:00
sched act_mirred: clear sender cpu before sending to tx 2015-10-27 09:51:51 +09:00
sctp sctp: fix race on protocol/netns initialization 2015-10-03 13:49:15 +02:00
sunrpc svcrdma: handle rdma read with a non-zero initial page offset 2015-10-27 09:51:59 +09:00
switchdev rename RTNH_F_EXTERNAL to RTNH_F_OFFLOAD 2015-05-14 22:45:39 -04:00
tipc tipc: move fragment importance field to new header position 2015-10-27 09:51:51 +09:00
unix net/unix: fix logic about sk_peek_offset 2015-10-27 09:51:52 +09:00
vmw_vsock net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
wimax wimax: convert printk to pr_foo() 2014-10-07 20:28:44 -04:00
wireless cfg80211: ignore netif running state when changing iftype 2015-08-03 09:29:16 -07:00
x25 net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
xfrm xfrm: Override skb->mark with tunnel->parm.i_key in xfrm_input 2015-05-28 06:23:31 +02:00
compat.c net: switch importing msghdr from userland to {compat_,}import_iovec() 2015-04-09 00:02:26 -04:00
Kconfig kconfig: use bool instead of boolean for type definition attributes 2015-01-07 13:08:04 +01:00
Makefile mpls: Refactor how the mpls module is built 2015-03-04 00:26:06 -05:00
socket.c VFS: net/: d_inode() annotations 2015-04-15 15:06:56 -04:00
sysctl_net.c net: Update the sysctl permissions handler to test effective uid/gid 2013-10-07 15:57:56 -04:00