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Yonghong Song eb166e522c bpf: Allow helper bpf_get_[ns_]current_pid_tgid() for all prog types 
Currently bpf_get_current_pid_tgid() is allowed in tracing, cgroup
and sk_msg progs while bpf_get_ns_current_pid_tgid() is only allowed
in tracing progs.

We have an internal use case where for an application running
in a container (with pid namespace), user wants to get
the pid associated with the pid namespace in a cgroup bpf
program. Currently, cgroup bpf progs already allow
bpf_get_current_pid_tgid(). Let us allow bpf_get_ns_current_pid_tgid()
as well.

With auditing the code, bpf_get_current_pid_tgid() is also used
by sk_msg prog. But there are no side effect to expose these two
helpers to all prog types since they do not reveal any kernel specific
data. The detailed discussion is in [1].

So with this patch, both bpf_get_current_pid_tgid() and bpf_get_ns_current_pid_tgid()
are put in bpf_base_func_proto(), making them available to all
program types.

  [1] https://lore.kernel.org/bpf/20240307232659.1115872-1-yonghong.song@linux.dev/

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240315184854.2975190-1-yonghong.song@linux.dev
History 2024-03-19 14:24:07 -07:00
..
6lowpan net: fill in MODULE_DESCRIPTION()s for 6LoWPAN 2024-02-09 14:12:01 -08:00
9p net: 9p: avoid freeing uninit memory in p9pdu_vreadf 2023-12-13 05:44:30 +09:00
802 net: fill in MODULE_DESCRIPTION()s under net/802* 2023-10-28 11:29:28 +01:00
8021q rtnetlink: prepare nla_put_iflink() to run under RCU 2024-02-26 11:46:12 +00:00
appletalk net: remove SOCK_DEBUG leftovers 2023-12-26 20:31:01 +00:00
atm net: fill in MODULE_DESCRIPTION()s for mpoa 2024-02-09 14:12:01 -08:00
ax25 net: implement lockless SO_PRIORITY 2023-10-01 19:09:54 +01:00
batman-adv This cleanup patchset includes the following patches: 2024-02-02 12:44:16 +00:00
bluetooth Bluetooth: hci_sync: Fix UAF in hci_acl_create_conn_sync 2024-03-08 11:06:14 -05:00
bpf bpf: Check return from set_memory_rox() 2024-03-18 14:18:47 -07:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-02-29 14:24:56 -08:00
caif net: fill in MODULE_DESCRIPTION()s for CAIF 2024-01-05 08:06:35 -08:00
can linux-can-next-for-6.9-20240220 2024-02-20 15:32:45 +01:00
ceph libceph: init the cursor when preparing sparse read in msgr2 2024-03-06 12:43:01 +01:00
core bpf: Allow helper bpf_get_[ns_]current_pid_tgid() for all prog types 2024-03-19 14:24:07 -07:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp net: dccp: Simplify the allocation of slab caches in dccp_ackvec_init 2024-02-02 12:19:26 +00:00
devlink devlink: Fix length of eswitch inline-mode 2024-03-11 13:13:53 -07:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: Leverage core stats allocator 2024-03-07 20:37:13 -08:00
ethernet net: ethernet: use sysfs_emit() to instead of scnprintf() 2022-12-07 20:02:44 -08:00
ethtool ethtool: remove ethtool_eee_use_linkmodes 2024-03-06 20:40:20 -08:00
handshake net/handshake: Fix handshake_req_destroy_test1 2024-02-08 18:32:29 -08:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-02-29 14:24:56 -08:00
ieee802154 Merge tag 'ieee802154-for-net-next-2024-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan-next 2024-03-08 20:35:33 -08:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-03-11 20:38:36 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-03-11 20:38:36 -07:00
iucv net/af_iucv: fix virtual vs physical address confusion 2024-02-22 18:28:13 -08:00
kcm net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function 2024-03-11 09:53:22 +00:00
key net: fill in MODULE_DESCRIPTION()s for af_key 2024-02-09 14:12:01 -08:00
l2tp l2tp: fix incorrect parameter validation in the pppol2tp_getsockopt() function 2024-03-11 09:53:22 +00:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-15 14:27:24 -07:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc llc: call sock_orphan() at release time 2024-01-30 13:49:09 +01:00
mac80211 wireless-next patches for v6.9 2024-03-08 09:05:49 -08:00
mac802154 mac802154: fix llsec key resources release in mac802154_llsec_key_del 2024-03-06 21:01:26 +01:00
mctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-02-29 14:24:56 -08:00
mpls mpls: Do not orphan the skb 2024-03-07 20:42:13 -08:00
mptcp mptcp: annotate a data-race around sysctl_tcp_wmem[0] 2024-03-11 10:37:40 +00:00
ncsi net/ncsi: Add NC-SI 1.2 Get MC MAC Address command 2023-11-18 15:00:51 +00:00
netfilter Networking changes for 6.9. 2024-03-12 17:44:08 -07:00
netlabel netlabel: remove impossible return value in netlbl_bitmap_walk 2024-02-28 19:37:34 -08:00
netlink net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID 2024-03-11 15:48:34 -07:00
netrom netrom: Fix data-races around sysctl_net_busy_read 2024-03-07 10:36:58 +01:00
nfc nfc: core: make nfc_class constant 2024-03-05 11:21:18 -08:00
nsh net: move gso declarations and functions to their own files 2023-06-10 00:11:41 -07:00
openvswitch net: openvswitch: limit the number of recursions from action sets 2024-02-09 12:54:38 -08:00
packet net/packet: Add getsockopt support for PACKET_COPY_THRESH 2024-03-11 15:52:05 -07:00
phonet phonet/pep: fix racy skb_queue_empty() use 2024-02-22 09:05:50 +01:00
psample genetlink: Use internal flags for multicast groups 2023-12-29 08:43:59 +00:00
qrtr net: qrtr: ns: Return 0 if server port is not present 2024-01-01 18:41:29 +00:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-03-07 10:29:36 -08:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-12-21 22:17:23 +01:00
rose net/rose: fix races in rose_kill_by_device() 2023-12-15 11:59:53 +00:00
rxrpc rxrpc: Extract useful fields from a received ACK to skb priv data 2024-03-05 23:35:26 +00:00
sched Networking changes for 6.9. 2024-03-12 17:44:08 -07:00
sctp net: introduce include/net/rps.h 2024-03-07 21:12:43 -08:00
smc net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list() 2024-03-05 15:49:35 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc svcrdma: Add Write chunk WRs to the RPC's Send WR chain 2024-03-01 09:12:30 -05:00
switchdev net: bridge: switchdev: Skip MDB replays of deferred events on offload 2024-02-16 09:36:37 +00:00
tipc tipc: Cleanup tipc_nl_bearer_add() error paths 2024-02-15 13:18:19 +01:00
tls tls: fix use-after-free on failed backlog decryption 2024-02-29 09:07:16 -08:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-02-22 15:29:26 -08:00
vmw_vsock sock_diag: add module pointer to "struct sock_diag_handler" 2024-01-23 15:13:54 +01:00
wireless wireless-next patches for v6.9 2024-03-08 09:05:49 -08:00
x25 net/x25: fix incorrect parameter validation in the x25_getsockopt() function 2024-03-11 09:53:22 +00:00
xdp bpf-next-for-netdev 2024-03-02 20:50:59 -08:00
xfrm ipsec-next-2024-03-06 2024-03-08 10:56:05 +00:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig net: bql: allow the config to be disabled 2024-02-18 10:19:21 +00:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile af_unix: Remove CONFIG_UNIX_SCM. 2024-01-31 16:41:16 -08:00
socket.c net: remove SLAB_MEM_SPREAD flag usage 2024-02-28 19:29:46 -08:00
sysctl_net.c sysctl: Add size to register_net_sysctl function 2023-08-15 15:26:17 -07:00