linux_dsm_epyc7002/net/core
Takeshi Misawa 82ecff655e keys: Fix memory leak in copy_net_ns
If copy_net_ns() failed after net_alloc(), net->key_domain is leaked.
Fix this, by freeing key_domain in error path.

syzbot report:
BUG: memory leak
unreferenced object 0xffff8881175007e0 (size 32):
  comm "syz-executor902", pid 7069, jiffies 4294944350 (age 28.400s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000a83ed741>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000a83ed741>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<00000000a83ed741>] slab_alloc mm/slab.c:3326 [inline]
    [<00000000a83ed741>] kmem_cache_alloc_trace+0x13d/0x280 mm/slab.c:3553
    [<0000000059fc92b9>] kmalloc include/linux/slab.h:547 [inline]
    [<0000000059fc92b9>] kzalloc include/linux/slab.h:742 [inline]
    [<0000000059fc92b9>] net_alloc net/core/net_namespace.c:398 [inline]
    [<0000000059fc92b9>] copy_net_ns+0xb2/0x220 net/core/net_namespace.c:445
    [<00000000a9d74bbc>] create_new_namespaces+0x141/0x2a0 kernel/nsproxy.c:103
    [<000000008047d645>] unshare_nsproxy_namespaces+0x7f/0x100 kernel/nsproxy.c:202
    [<000000005993ea6e>] ksys_unshare+0x236/0x490 kernel/fork.c:2674
    [<0000000019417e75>] __do_sys_unshare kernel/fork.c:2742 [inline]
    [<0000000019417e75>] __se_sys_unshare kernel/fork.c:2740 [inline]
    [<0000000019417e75>] __x64_sys_unshare+0x16/0x20 kernel/fork.c:2740
    [<00000000f4c5f2c8>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296
    [<0000000038550184>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

syzbot also reported other leak in copy_net_ns -> setup_net.
This problem is already fixed by cf47a0b882.

Fixes: 9b24261051 ("keys: Network namespace domain tag")
Reported-and-tested-by: syzbot+3b3296d032353c33184b@syzkaller.appspotmail.com
Signed-off-by: Takeshi Misawa <jeliantsurux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-24 14:40:02 -07:00
..
bpf_sk_storage.c bpf: support cloning sk storage on accept() 2019-08-17 23:18:54 +02:00
datagram.c tcp: annotate sk->sk_wmem_queued lockless reads 2019-10-13 10:13:08 -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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dev_ioctl.c net/core: Document all dev_ioctl() arguments 2019-03-27 13:49:43 -07:00
dev.c sk_buff: drop all skb extensions on free and skb scrubbing 2019-09-27 20:40:19 +02:00
devlink.c devlink: Fix error handling in param and info_get dumpit cb 2019-10-01 10:08:30 -07:00
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 ethtool: implement Energy Detect Powerdown support via phy-tunable 2019-09-16 22:02:45 +02:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
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 keys: Fix memory leak in copy_net_ns 2019-10-24 14:40:02 -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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
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 rtnetlink: skip metrics loop for dst_default_metrics 2019-06-26 13:14:59 -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/core/skmsg: Delete an unnecessary check before the function call “consume_skb” 2019-08-24 16:24:53 -07:00
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 tcp: annotate sk->sk_wmem_queued lockless reads 2019-10-13 10:13:08 -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