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Andrii Nakryiko 22dc4a0f5e bpf: Remove hard-coded btf_vmlinux assumption from BPF verifier 
Remove a permeating assumption thoughout BPF verifier of vmlinux BTF. Instead,
wherever BTF type IDs are involved, also track the instance of struct btf that
goes along with the type ID. This allows to gradually add support for kernel
module BTFs and using/tracking module types across BPF helper calls and
registers.

This patch also renames btf_id() function to btf_obj_id() to minimize naming
clash with using btf_id to denote BTF *type* ID, rather than BTF *object*'s ID.

Also, altough btf_vmlinux can't get destructed and thus doesn't need
refcounting, module BTFs need that, so apply BTF refcounting universally when
BPF program is using BTF-powered attachment (tp_btf, fentry/fexit, etc). This
makes for simpler clean up code.

Now that BTF type ID is not enough to uniquely identify a BTF type, extend BPF
trampoline key to include BTF object ID. To differentiate that from target
program BPF ID, set 31st bit of type ID. BTF type IDs (at least currently) are
not allowed to take full 32 bits, so there is no danger of confusing that bit
with a valid BTF type ID.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201203204634.1325171-10-andrii@kernel.org
 		2020-12-03 17:38:21 -08:00
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6lowpan
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9p net: 9p: Fix kerneldoc warnings of missing parameters etc 2020-11-02 12:25:52 -08:00
802
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8021q net: vlan: Fixed signedness in vlan_group_prealloc_vid() 2020-09-28 00:51:39 -07:00
appletalk net: appletalk: fix kerneldoc warnings 2020-10-30 11:48:17 -07:00
atm net: atm: fix update of position index in lec_seq_next 2020-10-31 12:26:30 -07:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
batman-adv genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
bluetooth Bluetooth: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
bpf bpf: fix raw_tp test run in preempt kernel 2020-09-30 08:34:08 -07:00
bpfilter Revert "bpfilter: Fix build error with CONFIG_BPFILTER_UMH" 2020-10-15 12:33:24 -07:00
bridge bridge: mrp: Use hlist_head instead of list_head for mrp 2020-11-09 16:42:12 -08:00
caif caif: Remove duplicate macro SRVL_CTRL_PKT_SIZE 2020-09-05 15:57:05 -07:00
can can: isotp: padlen(): make const array static, makes object smaller 2020-11-03 22:30:32 +01:00
ceph libceph: clear con->out_msg on Policy::stateful_server faults 2020-10-12 15:29:27 +02:00
core bpf: Adds support for setting window clamp 2020-12-03 17:23:24 -08:00
dcb net: dcb: Fix kerneldoc warnings 2020-10-30 11:59:54 -07:00
dccp net: dccp: convert tasklets to use new tasklet_setup() API 2020-11-07 10:40:56 -08:00
decnet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dns_resolver
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dsa net: dsa: use net core stats64 handling 2020-11-09 17:50:27 -08:00
ethernet
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ethtool Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-12 16:54:48 -08:00
hsr genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
ieee802154 genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
ife
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ipv4 bpf: Remove hard-coded btf_vmlinux assumption from BPF verifier 2020-12-03 17:38:21 -08:00
ipv6 bpf: Allow bpf_{s,g}etsockopt from cgroup bind{4,6} hooks 2020-12-02 13:25:11 -08:00
iucv net/af_iucv: fix null pointer dereference on shutdown 2020-11-10 18:08:17 -08:00
kcm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-08-02 01:02:12 -07:00
l2tp genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
l3mdev net: l3mdev: Fix kerneldoc warning 2020-10-30 11:43:42 -07:00
lapb
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llc net: llc: Fix kerneldoc warnings 2020-10-30 11:34:09 -07:00
mac80211 Some updates: 2020-11-13 12:03:22 -08:00
mac802154 net: mac802154: convert tasklets to use new tasklet_setup() API 2020-11-07 10:40:56 -08:00
mpls mpls: drop skb's dst in mpls_forward() 2020-11-03 12:55:53 -08:00
mptcp Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-12 16:54:48 -08:00
ncsi genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-06 17:33:38 -08:00
netlabel Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-12 16:54:48 -08:00
netlink netlink: export policy in extended ACK 2020-10-09 20:22:32 -07:00
netrom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nfc net: nfc: Fix kerneldoc warnings 2020-10-30 11:57:56 -07:00
nsh
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openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-06 17:33:38 -08:00
packet net/packet: make packet_fanout.arr size configurable up to 64K 2020-11-09 16:41:40 -08:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
qrtr net: qrtr: Release distant nodes along the bridge node 2020-11-11 15:29:34 -08:00
rds RDMA: Add rdma_connect_locked() 2020-10-28 09:14:49 -03:00
rfkill
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rose treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rxrpc rxrpc: Fix loss of final ack on shutdown 2020-10-15 13:28:00 +01:00
sched net: sched: fix misspellings using misspell-fixer tool 2020-11-10 17:00:28 -08:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-11-06 17:33:38 -08:00
smc net: smc: convert tasklets to use new tasklet_setup() API 2020-11-07 10:41:15 -08:00
strparser
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sunrpc net/sunrpc: fix useless comparison in proc_do_xprt() 2020-11-08 16:28:25 -05:00
switchdev net: switchdev: Fixed kerneldoc warning 2020-09-23 17:46:31 -07:00
tipc tipc: fix -Wstringop-truncation warnings 2020-11-13 14:17:49 -08:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-15 12:43:21 -07:00
unix networking changes for the 5.10 merge window 2020-10-15 18:42:13 -07:00
vmw_vsock vsock: fix the error return when an invalid ioctl command is used 2020-10-29 17:43:20 -07:00
wireless Some updates: 2020-11-13 12:03:22 -08:00
x25 net/x25: Fix null-ptr-deref in x25_connect 2020-11-11 14:53:56 -08:00
xdp bpf: Eliminate rlimit-based memory accounting for xskmap maps 2020-12-02 18:32:47 -08:00
xfrm net: xfrm: convert tasklets to use new tasklet_setup() API 2020-11-07 10:41:15 -08:00
Kconfig wimax: move out to staging 2020-10-29 19:27:45 +01:00
Makefile wimax: move out to staging 2020-10-29 19:27:45 +01:00
compat.c iov_iter: transparently handle compat iovecs in import_iovec 2020-10-03 00:02:13 -04:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-10-05 18:40:01 -07:00
sysctl_net.c
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