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5ce765a540
linux/net
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Alex Elder 5ce765a540 libceph: only kunmap kmapped pages 
In write_partial_msg_pages(), pages need to be kmapped in order to
perform a CRC-32c calculation on them.  As an artifact of the way
this code used to be structured, the kunmap() call was separated
from the kmap() call and both were done conditionally.  But the
conditions under which the kmap() and kunmap() calls were made
differed, so there was a chance a kunmap() call would be done on a
page that had not been mapped.

The symptom of this was tripping a BUG() in kunmap_high() when
pkmap_count[nr] became 0.

Reported-by: Bryan K. Wright <bryan@virginia.edu>
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
2012-09-21 20:49:26 -07:00
..
9p
802
8021q vlan: clean up vlan_dev_hard_start_xmit() 2012-08-14 14:33:32 -07:00
appletalk
atm atm: fix info leak via getsockname() 2012-08-15 21:36:30 -07:00
ax25
batman-adv batman-adv: Fix mem leak in the batadv_tt_local_event() function 2012-08-08 16:04:04 -07:00
bluetooth Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-09-07 14:38:50 -04:00
bridge netfilter: log: Fix log-level processing 2012-09-12 17:17:35 +02:00
caif caif: move the dereference below the NULL test 2012-09-10 16:13:31 -04:00
can
ceph libceph: only kunmap kmapped pages 2012-09-21 20:49:26 -07:00
core pktgen: fix crash with vlan and packet size less than 46 2012-09-13 17:10:00 -04:00
dcb
dccp dccp: fix info leak via getsockopt(DCCP_SOCKOPT_CCID_TX_INFO) 2012-08-15 21:36:31 -07:00
decnet ipv4: Restore old dst_free() behavior. 2012-07-31 14:41:38 -07:00
dns_resolver
dsa
ethernet
ieee802154
ipv4 udp: increment UDP_MIB_INERRORS if copy failed 2012-09-07 12:56:00 -04:00
ipv6 udp: increment UDP_MIB_INERRORS if copy failed 2012-09-07 12:56:00 -04:00
ipx
irda
iucv
key
l2tp l2tp: fix a typo in l2tp_eth_dev_recv() 2012-09-04 15:54:55 -04:00
lapb
llc llc: fix info leak via getsockname() 2012-08-15 21:36:31 -07:00
mac80211 Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 2012-09-05 14:48:15 -04:00
mac802154
netfilter netfilter: log: Fix log-level processing 2012-09-12 17:17:35 +02:00
netlabel
netlink netlink: fix possible spoofing from non-root processes 2012-08-24 13:36:09 -04:00
netrom netrom: copy_datagram_iovec can fail 2012-09-04 12:57:35 -04:00
nfc
openvswitch openvswitch: Fix FLOW_BUFSIZE definition. 2012-09-03 19:06:27 -07:00
packet af_packet: match_fanout_group() can be static 2012-08-23 09:27:12 -07:00
phonet
rds rds: set correct msg_namelen 2012-07-23 01:01:44 -07:00
rfkill
rose
rxrpc
sched net_sched: gred: actually perform idling in WRED mode 2012-09-13 16:10:13 -04:00
sctp sctp: Don't charge for data in sndbuf again when transmitting packet 2012-09-03 13:24:13 -04:00
sunrpc NFS client bugfixes for Linux 3.6 2012-09-13 09:04:13 +08:00
tipc
unix af_netlink: force credentials passing [CVE-2012-3520] 2012-08-21 14:53:01 -07:00
wanrouter wanmain: comparing array with NULL 2012-07-24 13:55:21 -07:00
wimax
wireless Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 2012-09-05 14:48:15 -04:00
x25
xfrm xfrm: Workaround incompatibility of ESN and async crypto 2012-09-04 14:09:45 -04:00
compat.c net: Fix references to out-of-scope variables in put_cmsg_compat() 2012-07-22 17:50:49 -07:00
Kconfig
Makefile
nonet.c
socket.c Fix order of arguments to compat_put_time[spec|val] 2012-09-05 18:34:13 -07:00
sysctl_net.c