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linux/net
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Coly Li 7b62d31d3f net: add WARN_ONCE in kernel_sendpage() for improper zero-copy send 
If a page sent into kernel_sendpage() is a slab page or it doesn't have
ref_count, this page is improper to send by the zero copy sendpage()
method. Otherwise such page might be unexpected released in network code
path and causes impredictable panic due to kernel memory management data
structure corruption.

This path adds a WARN_ON() on the sending page before sends it into the
concrete zero-copy sendpage() method, if the page is improper for the
zero-copy sendpage() method, a warning message can be observed before
the consequential unpredictable kernel panic.

This patch does not change existing kernel_sendpage() behavior for the
improper page zero-copy send, it just provides hint warning message for
following potential panic due the kernel memory heap corruption.

Signed-off-by: Coly Li <colyli@suse.de>
Cc: Cong Wang <amwang@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-10-02 15:27:08 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
802
8021q treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
appletalk appletalk: Fix atalk_proc_init() return path 2020-08-03 15:48:32 -07:00
atm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
batman-adv batman-adv: mcast: fix duplicate mcast packets from BLA backbone to mesh 2020-09-15 10:05:24 +02:00
bluetooth mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
bpf treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bpfilter Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-08-04 14:27:25 -07:00
bridge net: core: introduce struct netdev_nested_priv for nested interface infrastructure 2020-09-28 15:00:15 -07:00
caif net: caif: fix error code handling 2020-08-25 07:50:25 -07:00
can treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ceph treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
core net: core: add nested_level variable in net_device 2020-09-28 15:00:15 -07:00
dcb net: DCB: Validate DCB_ATTR_DCB_BUFFER argument 2020-09-10 15:09:08 -07:00
dccp treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
decnet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa net: mscc: ocelot: add locking for the port TX timestamp ID 2020-09-18 13:52:33 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool ethtool: mark netlink family as __ro_after_init 2020-09-28 18:52:50 -07:00
hsr hsr: avoid newline at end of message in NL_SET_ERR_MSG_MOD 2020-09-09 11:15:26 -07:00
ieee802154 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ife
ipv4 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2020-09-28 12:25:42 -07:00
ipv6 ipv6: route: convert comma to semicolon 2020-09-21 14:52:18 -07:00
iucv treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kcm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-08-02 01:02:12 -07:00
l2tp l2tp: improve API documentation in l2tp_core.h 2020-07-30 16:45:31 -07:00
l3mdev net: Fix some comments 2020-08-27 07:55:59 -07:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
mac80211 mac80211: fix 80 MHz association to 160/80+80 AP on 6 GHz 2020-09-18 14:01:24 +02:00
mac802154 Merge tag 'ieee802154-for-davem-2020-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan 2020-09-08 20:12:58 -07:00
mpls treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mptcp mptcp: Handle incoming 32-bit DATA_FIN values 2020-09-29 18:15:46 -07:00
ncsi treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
netfilter netfilter: nft_meta: use socket user_ns to retrieve skuid and skgid 2020-09-08 13:04:56 +02:00
netlabel netlabel: fix problems with mapping removal 2020-08-24 16:08:00 -07:00
netlink netlink: fix policy dump leak 2020-10-02 13:00:38 -07:00
netrom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nfc net/nfc/rawsock.c: add CAP_NET_RAW check. 2020-08-11 10:34:30 -07:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
packet net/packet: fix overflow in tpacket_rcv 2020-09-04 11:56:02 -07:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr net: qrtr: ns: Protect radix_tree_deref_slot() using rcu read locks 2020-09-28 15:54:57 -07:00
rds treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rfkill
rose treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
sched net_sched: remove a redundant goto chain check 2020-09-28 12:58:45 -07:00
sctp net: sctp: Fix IPv6 ancestor_size calc in sctp_copy_descendant 2020-09-20 14:15:12 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
strparser
sunrpc NFS client bugfixes for Linux 5.9 2020-09-09 11:14:20 -07:00
switchdev net: switchdev: Fixed kerneldoc warning 2020-09-23 17:46:31 -07:00
tipc net: tipc: kerneldoc fixes 2020-09-15 13:33:04 -07:00
tls net/tls: race causes kernel panic 2020-09-24 20:06:29 -07:00
unix treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmw_vsock vsock: fix potential null pointer dereference in vsock_poll() 2020-08-12 12:56:06 -07:00
wimax
wireless cfg80211: fix 6 GHz channel conversion 2020-09-18 11:43:46 +02:00
x25 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xdp xsk: Do not discard packet when NETDEV_TX_BUSY 2020-09-16 23:36:58 +02:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2020-09-28 12:25:42 -07:00
compat.c net/scm: Fix typo in SCM_RIGHTS compat refactoring 2020-08-07 12:43:25 -07:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig net: ethtool: Remove PHYLIB direct dependency 2020-07-07 15:41:05 -07:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c net: add WARN_ONCE in kernel_sendpage() for improper zero-copy send 2020-10-02 15:27:08 -07:00
sysctl_net.c