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linux/net/core
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Eric Dumazet add2d73631 net: set initial device refcount to 1 
When adding CONFIG_PCPU_DEV_REFCNT, I forgot that the
initial net device refcount was 0.

When CONFIG_PCPU_DEV_REFCNT is not set, this means
the first dev_hold() triggers an illegal refcount
operation (addition on 0)

refcount_t: addition on 0; use-after-free.
WARNING: CPU: 0 PID: 1 at lib/refcount.c:25 refcount_warn_saturate+0x128/0x1a4

Fix is to change initial (and final) refcount to be 1.

Also add a missing kerneldoc piece, as reported by
Stephen Rothwell.

Fixes: 919067cc845f ("net: add CONFIG_PCPU_DEV_REFCNT")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Guenter Roeck <groeck@google.com>
Tested-by: Guenter Roeck <groeck@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-22 16:57:36 -07:00
..
bpf_sk_storage.c
bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]
2021-02-26 11:51:48 -08:00
datagram.c
udp: fix skb_copy_and_csum_datagram with odd segment sizes
2021-02-04 18:56:56 -08:00
datagram.h
net/core: Allow the compiler to verify declaration and definition consistency
2019-03-27 13:49:44 -07:00
dev_addr_lists.c
net: core: add nested_level variable in net_device
2020-09-28 15:00:15 -07:00
dev_ioctl.c
net: fix dev_ifsioc_locked() race condition
2021-02-11 18:14:19 -08:00
dev.c
net: set initial device refcount to 1
2021-03-22 16:57:36 -07:00
devlink.c
mlx5 subfunction support
2021-01-28 16:57:19 -08:00
drop_monitor.c
/net/core/: fix misspellings using codespell tool
2021-03-18 19:13:41 -07:00
dst_cache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dst.c
net: Correct the comment of dst_dev_put()
2020-09-10 13:28:57 -07:00
failover.c
failover: allow name change on IFF_UP slave interfaces
2019-04-10 22:12:26 -07:00
fib_notifier.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
fib_rules.c
treewide: rename nla_strlcpy to nla_strscpy.
2020-11-16 08:08:54 -08:00
filter.c
bpf, xdp: Restructure redirect actions
2021-03-10 01:06:34 +01:00
flow_dissector.c
flow_dissector: constify raw input data argument
2021-03-14 14:46:32 -07:00
flow_offload.c
net: flow_offload: Fix memory leak for indirect flow block
2020-12-09 16:08:33 -08:00
gen_estimator.c
net_sched: gen_estimator: support large ewma log
2021-01-15 18:11:06 -08:00
gen_stats.c
docs: networking: convert gen_stats.txt to ReST
2020-04-28 14:39:46 -07:00
gro_cells.c
gro_cells: reduce number of synchronize_net() calls
2020-11-25 11:28:12 -08:00
hwbm.c
net: hwbm: Make the hwbm_pool lock a mutex
2019-06-09 19:40:10 -07:00
link_watch.c
net: Add IF_OPER_TESTING
2020-04-20 12:43:24 -07:00
lwt_bpf.c
lwt_bpf: Replace preempt_disable() with migrate_disable()
2020-12-07 11:53:40 -08:00
lwtunnel.c
net: ipv6: add rpl sr tunnel
2020-03-29 22:30:57 -07:00
Makefile
bpf: Clean up sockmap related Kconfigs
2021-02-26 12:28:03 -08:00
neighbour.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2021-02-02 14:21:31 -08:00
net_namespace.c
net: initialize net->net_cookie at netns setup
2021-02-11 14:10:07 -08:00
net-procfs.c
net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h
2021-03-22 13:14:45 -07:00
net-sysfs.c
net-sysfs: remove possible sleep from an RCU read-side critical section
2021-03-22 13:28:13 -07:00
net-sysfs.h
net-sysfs: add netdev_change_owner()
2020-02-26 20:07:25 -08:00
net-traces.c
page_pool: add tracepoints for page_pool with details need by XDP
2019-06-19 11:23:13 -04:00
netclassid_cgroup.c
net: Remove the err argument from sock_from_file
2020-12-04 22:32:40 +01:00
netevent.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
netpoll.c
Revert "net: Have netpoll bring-up DSA management interface"
2021-02-06 14:42:57 -08:00
netprio_cgroup.c
net: Remove the err argument from sock_from_file
2020-12-04 22:32:40 +01:00
page_pool.c
net: page_pool: simplify page recycling condition tests
2021-02-04 18:20:14 -08:00
pktgen.c
pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()
2021-01-27 16:46:37 -08:00
ptp_classifier.c
ptp: Add generic ptp v2 header parsing function
2020-08-19 16:07:49 -07:00
request_sock.c
tcp: add rcu protection around tp->fastopen_rsk
2019-10-13 10:13:08 -07:00
rtnetlink.c
rtnetlink: using dev_base_seq from target net
2021-03-03 16:59:17 -08:00
scm.c
fs: Add receive_fd() wrapper for __receive_fd()
2020-07-13 11:03:44 -07:00
secure_seq.c
crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h
2020-05-08 15:32:17 +10:00
skbuff.c
skbuff: remove some unnecessary operation in skb_segment_list()
2021-03-10 12:45:15 -08:00
skmsg.c
skmsg: Get rid of sk_psock_bpf_run()
2021-02-26 12:28:04 -08:00
sock_diag.c
bpf, net: Rework cookie generator as per-cpu one
2020-09-30 11:50:35 -07:00
sock_map.c
sock_map: Make sock_map_prog_update() static
2021-02-26 12:28:04 -08:00
sock_reuseport.c
udp: Prevent reuseport_select_sock from reading uninitialized socks
2021-01-08 19:15:40 -08:00
sock.c
net: indirect call helpers for ipv4/ipv6 dst_check functions
2021-02-03 14:51:40 -08:00
stream.c
tcp: make sure EPOLLOUT wont be missed
2019-08-19 13:07:43 -07:00
sysctl_net_core.c
net: sysctl: remove redundant #ifdef CONFIG_NET
2021-01-27 17:02:43 -08:00
timestamping.c
net: Introduce a new MII time stamping interface.
2019-12-25 19:51:33 -08:00
tso.c
net: tso: add UDP segmentation support
2020-06-18 20:46:23 -07:00
utils.c
net: Fix skb->csum update in inet_proto_csum_replace16().
2020-01-24 20:54:30 +01:00
xdp.c
net, veth: Alloc skb in bulk for ndo_xdp_xmit
2021-02-04 01:00:07 +01:00