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b8eb718348
linux-next/net/core
History
Jouni Hogander b8eb718348 net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject 
kobject_init_and_add takes reference even when it fails. This has
to be given up by the caller in error handling. Otherwise memory
allocated by kobject_init_and_add is never freed. Originally found
by Syzkaller:

BUG: memory leak
unreferenced object 0xffff8880679f8b08 (size 8):
  comm "netdev_register", pid 269, jiffies 4294693094 (age 12.132s)
  hex dump (first 8 bytes):
    72 78 2d 30 00 36 20 d4                          rx-0.6 .
  backtrace:
    [<000000008c93818e>] __kmalloc_track_caller+0x16e/0x290
    [<000000001f2e4e49>] kvasprintf+0xb1/0x140
    [<000000007f313394>] kvasprintf_const+0x56/0x160
    [<00000000aeca11c8>] kobject_set_name_vargs+0x5b/0x140
    [<0000000073a0367c>] kobject_init_and_add+0xd8/0x170
    [<0000000088838e4b>] net_rx_queue_update_kobjects+0x152/0x560
    [<000000006be5f104>] netdev_register_kobject+0x210/0x380
    [<00000000e31dab9d>] register_netdevice+0xa1b/0xf00
    [<00000000f68b2465>] __tun_chr_ioctl+0x20d5/0x3dd0
    [<000000004c50599f>] tun_chr_ioctl+0x2f/0x40
    [<00000000bbd4c317>] do_vfs_ioctl+0x1c7/0x1510
    [<00000000d4c59e8f>] ksys_ioctl+0x99/0xb0
    [<00000000946aea81>] __x64_sys_ioctl+0x78/0xb0
    [<0000000038d946e5>] do_syscall_64+0x16f/0x580
    [<00000000e0aa5d8f>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
    [<00000000285b3d1a>] 0xffffffffffffffff

Cc: David Miller <davem@davemloft.net>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jouni Hogander <jouni.hogander@unikie.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-20 12:09:50 -08:00
..
bpf_sk_storage.c bpf: support cloning sk storage on accept() 2019-08-17 23:18:54 +02:00
datagram.c net: add READ_ONCE() annotation in __skb_wait_for_more_packets() 2019-10-28 13:33:41 -07:00
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: remove unnecessary variables and callback 2019-10-24 14:53:49 -07:00
dev_ioctl.c net/core: Document all dev_ioctl() arguments 2019-03-27 13:49:43 -07:00
dev.c net: fix installing orphaned programs 2019-11-01 15:16:01 -07:00
devlink.c devlink: Add method for time-stamp on reporter's dump 2019-11-11 16:04:21 -08:00
drop_monitor.c drop_monitor: Better sanitize notified packets 2019-09-16 21:39:27 +02:00
dst_cache.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dst.c net: print proper warning on dst underflow 2019-09-26 09:05:56 +02:00
ethtool.c net: Zeroing the structure ethtool_wolinfo in ethtool_get_wol() 2019-10-26 11:20:10 -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: move fib_notifier_ops from struct net into per-net struct 2019-09-07 17:28:22 +02:00
fib_rules.c SPDX update for 5.2-rc4 2019-06-08 12:52:42 -07:00
filter.c tcp: annotate sk->sk_sndbuf lockless reads 2019-10-13 10:13:08 -07:00
flow_dissector.c net/flow_dissector: switch to siphash 2019-10-23 20:13:22 -07:00
flow_offload.c net: flow_offload: convert block_ing_cb_list to regular list type 2019-08-19 13:02:38 -07:00
gen_estimator.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gen_stats.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
gro_cells.c gro_cells: make sure device is up in gro_cells_receive() 2019-03-10 11:07:14 -07:00
hwbm.c net: hwbm: Make the hwbm_pool lock a mutex 2019-06-09 19:40:10 -07:00
link_watch.c net: link_watch: prevent starvation when processing linkwatch wq 2019-07-01 19:02:47 -07:00
lwt_bpf.c bpf: lwtunnel: Fix reroute supplying invalid dst 2019-10-14 11:43:48 -07:00
lwtunnel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Makefile bpf: Introduce bpf sk local storage 2019-04-27 09:07:04 -07:00
neighbour.c net: neigh: remove redundant assignment to variable bucket 2019-07-27 13:32:06 -07:00
net_namespace.c netns: fix GFP flags in rtnl_net_notifyid() 2019-10-25 20:14:42 -07:00
net-procfs.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
net-sysfs.c net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject 2019-11-20 12:09:50 -08:00
net-sysfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netevent.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
netpoll.c net: fix skb use after free in netpoll 2019-08-27 20:52:02 -07:00
netprio_cgroup.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
page_pool.c page_pool: fix logic in __page_pool_get_cached 2019-08-15 12:27:36 -07:00
pktgen.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-09-18 12:34:53 -07:00
ptp_classifier.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
request_sock.c tcp: add rcu protection around tp->fastopen_rsk 2019-10-13 10:13:08 -07:00
rtnetlink.c net: rtnetlink: fix a typo fbd -> fdb 2019-10-29 18:13:38 -07:00
scm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
secure_seq.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
skbuff.c net/sched: fix corrupted L2 header with MPLS 'push' and 'pop' actions 2019-10-15 17:14:48 -07:00
skmsg.c net/tls: fix sk_msg trim on fallback to copy mode 2019-11-05 18:07:47 -08:00
sock_diag.c sock: make cookie generation global instead of per netns 2019-08-09 13:14:46 -07:00
sock_map.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
sock_reuseport.c udp: correct reuseport selection with connected sockets 2019-09-16 09:02:18 +02:00
sock.c net: annotate accesses to sk->sk_incoming_cpu 2019-10-30 13:24:25 -07:00
stream.c tcp: make sure EPOLLOUT wont be missed 2019-08-19 13:07:43 -07:00
sysctl_net_core.c net: use listified RX for handling GRO_NORMAL skbs 2019-08-08 18:22:29 -07:00
timestamping.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
tso.c net: Use skb accessors in network core 2019-07-22 20:47:56 -07:00
utils.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
xdp.c net: core: page_pool: add user refcnt and reintroduce page_pool_destroy 2019-07-08 14:58:04 -07:00