Daniel Borkmann 8c15bfb36a bpf: Add kconfig knob for disabling unpriv bpf by default ... commit 08389d888287c3823f80b0216766b71e17f0aba5 upstream. Add a kconfig knob which allows for unprivileged bpf to be disabled by default. If set, the knob sets /proc/sys/kernel/unprivileged_bpf_disabled to value of 2. This still allows a transition of 2 -> {0,1} through an admin. Similarly, this also still keeps 1 -> {1} behavior intact, so that once set to permanently disabled, it cannot be undone aside from a reboot. We've also added extra2 with max of 2 for the procfs handler, so that an admin still has a chance to toggle between 0 <-> 2. Either way, as an additional alternative, applications can make use of CAP_BPF that we added a while ago. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/74ec548079189e4e4dffaeb42b8987bb3c852eee.1620765074.git.daniel@iogearbox.net Cc: Salvatore Bonaccorso <carnil@debian.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-01-05 12:40:34 +01:00
..
preload	bpf: Fix umd memory leak in copy_process()	2021-03-30 14:32:03 +02:00
arraymap.c	bpf: Fix potential race in tail call compatibility check	2021-11-02 19:48:21 +01:00
bpf_inode_storage.c	bpf: Change inode_storage's lookup_elem return value from NULL to -EBADF	2021-03-30 14:31:56 +02:00
bpf_iter.c	bpf: Fix an unitialized value in bpf_iter	2021-03-04 11:37:33 +01:00
bpf_local_storage.c	bpf: Use hlist_add_head_rcu when linking to local_storage	2020-09-19 01:12:35 +02:00
bpf_lru_list.c	bpf_lru_list: Read double-checked variable once without lock	2021-03-04 11:37:29 +01:00
bpf_lru_list.h	bpf: Fix a typo "inacitve" -> "inactive"	2020-04-06 21:54:10 +02:00
bpf_lsm.c	bpf: Update verification logic for LSM programs	2020-11-06 13:15:21 -08:00
bpf_struct_ops_types.h	bpf: tcp: Support tcp_congestion_ops in bpf	2020-01-09 08:46:18 -08:00
bpf_struct_ops.c	bpf: Handle return value of BPF_PROG_TYPE_STRUCT_OPS prog	2021-10-06 15:55:50 +02:00
btf.c	bpf: Forbid trampoline attach for functions with variable arguments	2021-06-16 12:01:35 +02:00
cgroup.c	bpf, cgroup: Fix problematic bounds check	2021-02-10 09:29:12 +01:00
core.c	bpf: Prevent increasing bpf_jit_limit above max	2021-11-18 14:03:42 +01:00
cpumap.c	bpf, cpumap: Remove rcpu pointer from cpu_map_build_skb signature	2020-09-28 23:30:42 +02:00
devmap.c	bpf: Fix integer overflow in argument calculation for bpf_map_area_alloc	2021-12-17 10:14:41 +01:00
disasm.c	bpf: Introduce BPF nospec instruction for mitigating Spectre v4	2021-08-04 12:46:44 +02:00
disasm.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
dispatcher.c	bpf: Remove bpf_image tree	2020-03-13 12:49:52 -07:00
hashtab.c	bpf: Fix integer overflow involving bucket_size	2021-08-18 08:59:10 +02:00
helpers.c	bpf: Fix potentially incorrect results with bpf_get_local_storage()	2021-09-03 10:09:31 +02:00
inode.c	bpf: link: Refuse non-O_RDWR flags in BPF_OBJ_GET	2021-04-14 08:42:00 +02:00
local_storage.c	bpf: Fix NULL pointer dereference in bpf_get_local_storage() helper	2021-09-03 10:09:21 +02:00
lpm_trie.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
Makefile	bpf: Don't rely on GCC __attribute__((optimize)) to disable GCSE	2020-10-29 20:01:46 -07:00
map_in_map.c	bpf: Relax max_entries check for most of the inner map types	2020-08-28 15:41:30 +02:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: Implement link_query callbacks in map element iterators	2020-08-21 14:01:39 -07:00
net_namespace.c	bpf: Add support for forced LINK_DETACH command	2020-08-01 20:38:28 -07:00
offload.c	bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill	2020-02-17 16:53:49 +01:00
percpu_freelist.c	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
reuseport_array.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
ringbuf.c	bpf: Fix false positive kmemleak report in bpf_ringbuf_area_alloc()	2021-07-19 09:44:54 +02:00
stackmap.c	bpf: Fix integer overflow in prealloc_elems_and_freelist()	2021-10-13 10:04:26 +02:00
syscall.c	bpf: Add kconfig knob for disabling unpriv bpf by default	2022-01-05 12:40:34 +01:00
sysfs_btf.c	bpf: Fix sysfs export of empty BTF section	2020-09-21 21:50:24 +02:00
task_iter.c	bpf: Save correct stopping point in file seq iteration	2021-01-19 18:27:28 +01:00
tnum.c	bpf: Verifier, do explicit ALU32 bounds tracking	2020-03-30 14:59:53 -07:00
trampoline.c	bpf: Fix fexit trampoline.	2021-04-07 15:00:03 +02:00
verifier.c	bpf: Make 32->64 bounds propagation slightly more robust	2021-12-22 09:30:50 +01:00