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linux/net/core
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Florian Westphal a28b1b90de skbuff: re-add check for NULL skb->head in kfree_skb path 
A null check is needed after all.  netlink skbs can have skb->head be
backed by vmalloc.  The netlink destructor vfree()s head, then sets it to
NULL.  We then panic in skb_release_data with a NULL dereference.

Re-add such a test.

Alternative would be to switch to kvfree to free skb->head memory
and remove the special handling in netlink destructor.

Reported-by: kernel test robot <fengguang.wu@intel.com>
Fixes: 06dc75ab06 ("net: Revert "net: add function to allocate sk_buff head without data area")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-24 16:27:08 -07:00
..
datagram.c datagram: fix kernel-doc comments 2017-07-12 14:39:43 -07:00
dev_addr_lists.c
dev_ioctl.c net: Zero terminate ifr_name in dev_ifname(). 2017-07-19 13:33:24 -07:00
dev.c net: call udp_tunnel_get_rx_info when NETIF_F_RX_UDP_TUNNEL_PORT is toggled 2017-07-24 13:52:59 -07:00
devlink.c devlink: fix potential memort leak 2017-06-05 11:24:28 -04:00
drop_monitor.c drop_monitor: use setup_timer 2017-03-12 23:47:16 -07:00
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
dst.c net: store port/representator id in metadata_dst 2017-06-25 11:42:01 -04:00
ethtool.c net: add new netdevice feature for offload of RX port for UDP tunnels 2017-07-24 13:52:59 -07:00
fib_rules.c net: set fib rule refcount after malloc 2017-07-13 13:43:54 -07:00
filter.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-07-21 03:38:43 +01:00
flow_dissector.c net/flow_dissector: add support for dissection of misc ip header fields 2017-06-04 18:12:23 -04:00
gen_estimator.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
gen_stats.c net_sched: gen_estimator: complete rewrite of rate estimators 2016-12-05 15:21:59 -05:00
gro_cells.c net: Generic XDP 2017-04-25 13:33:49 -04:00
hwbm.c net: hwbm: Fix unbalanced spinlock in error case 2016-05-25 12:35:09 -07:00
link_watch.c
lwt_bpf.c net: add extack arg to lwtunnel build state 2017-05-30 11:55:32 -04:00
lwtunnel.c net: add extack arg to lwtunnel build state 2017-05-30 11:55:32 -04:00
Makefile xfrm: remove flow cache 2017-07-18 11:13:41 -07:00
neighbour.c Add wait_for_random_bytes() and get_random_*_wait() functions so that 2017-07-15 12:44:02 -07:00
net_namespace.c net: convert net.passive from atomic_t to refcount_t 2017-07-01 07:39:09 -07:00
net-procfs.c net-procfs: Use vsnprintf extension %phN 2017-06-04 19:52:58 -04:00
net-sysfs.c net: convert net.passive from atomic_t to refcount_t 2017-07-01 07:39:09 -07:00
net-sysfs.h
net-traces.c net: IPv6 fib lookup tracepoint 2015-11-22 11:54:10 -05:00
netclassid_cgroup.c cgroup, net_cls: iterate the fds of only the tasks which are being migrated 2017-03-22 10:32:46 -07:00
netevent.c
netpoll.c netpoll: shut up a kernel warning on refcount 2017-07-14 08:16:59 -07:00
netprio_cgroup.c net: break include loop netdevice.h, dsa.h, devlink.h 2017-03-28 22:46:04 -07:00
pktgen.c net: convert sk_buff.users from atomic_t to refcount_t 2017-07-01 07:39:07 -07:00
ptp_classifier.c ptp: Change ptp_class to a proper bitmask 2015-11-03 11:08:22 -05:00
request_sock.c ipv4: Namespaceify tcp_max_syn_backlog knob 2016-12-29 11:38:31 -05:00
rtnetlink.c rtnetlink: allocate more memory for dev_set_mac_address() 2017-07-20 15:23:22 -07:00
scm.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h> 2017-03-02 08:42:29 +01:00
secure_seq.c tcp: Namespaceify sysctl_tcp_timestamps 2017-06-08 10:53:29 -04:00
skbuff.c skbuff: re-add check for NULL skb->head in kfree_skb path 2017-07-24 16:27:08 -07:00
sock_diag.c netlink: extended ACK reporting 2017-04-13 13:58:20 -04:00
sock_reuseport.c soreuseport: use "unsigned int" in __reuseport_alloc() 2017-04-03 19:06:38 -07:00
sock.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-07-05 12:31:59 -07:00
stream.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
sysctl_net_core.c net: move somaxconn init from sysctl code 2017-05-25 13:12:17 -04:00
timestamping.c
tso.c net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
utils.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00