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5e214f2e43
linux/kernel/bpf
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Connor O'Brien 5e214f2e43 bpf: Add config to allow loading modules with BTF mismatches 
BTF mismatch can occur for a separately-built module even when the ABI is
otherwise compatible and nothing else would prevent successfully loading.

Add a new Kconfig to control how mismatches are handled. By default, preserve
the current behavior of refusing to load the module. If MODULE_ALLOW_BTF_MISMATCH
is enabled, load the module but ignore its BTF information.

Suggested-by: Yonghong Song <yhs@fb.com>
Suggested-by: Michal Suchánek <msuchanek@suse.de>
Signed-off-by: Connor O'Brien <connoro@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/CAADnVQJ+OVPnBz8z3vNu8gKXX42jCUqfuvhWAyCQDu8N_yqqwQ@mail.gmail.com
Link: https://lore.kernel.org/bpf/20220223012814.1898677-1-connoro@google.com
2022-02-28 14:17:10 +01:00
..
preload bpf: Fix issue with bpf preload module taking over stdout/stdin of kernel. 2022-02-25 12:48:35 -08:00
arraymap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
bloom_filter.c bpf: Add missing map_get_next_key method to bloom filter map. 2021-12-29 09:38:31 -08:00
bpf_inode_storage.c bpf: Allow bpf_local_storage to be used by sleepable programs 2021-12-29 17:54:40 -08:00
bpf_iter.c bpf: Add support for bpf iterator programs to use sleepable helpers 2022-01-24 19:55:40 -08:00
bpf_local_storage.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
bpf_lru_list.c bpf_lru_list: Read double-checked variable once without lock 2021-02-10 15:54:26 -08:00
bpf_lru_list.h bpf: Fix a typo "inacitve" -> "inactive" 2020-04-06 21:54:10 +02:00
bpf_lsm.c bpf: Fix renaming task_getsecid_subj->current_getsecid_subj. 2022-01-24 20:20:51 -08:00
bpf_struct_ops_types.h bpf: Add dummy BPF STRUCT_OPS for test purpose 2021-11-01 14:10:00 -07:00
bpf_struct_ops.c bpf: Rename btf_member accessors. 2021-12-02 11:18:34 -08:00
bpf_task_storage.c bpf: Allow bpf_local_storage to be used by sleepable programs 2021-12-29 17:54:40 -08:00
btf.c bpf: Add config to allow loading modules with BTF mismatches 2022-02-28 14:17:10 +01:00
cgroup.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
core.c bpf: bpf_prog_pack: Set proper size before freeing ro_header 2022-02-17 13:15:36 -08:00
cpumap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
devmap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
disasm.c bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause 2021-09-02 14:49:23 +02:00
disasm.h bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause 2021-09-02 14:49:23 +02:00
dispatcher.c
hashtab.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
helpers.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
inode.c bpf: Convert bpf_preload.ko to use light skeleton. 2022-02-10 23:31:51 +01:00
Kconfig bpf: Disallow unprivileged bpf by default 2021-11-01 17:06:47 +01:00
local_storage.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
lpm_trie.c bpf: Fix typo in a comment in bpf lpm_trie. 2021-12-30 18:42:34 -08:00
Makefile bpf: Prepare relo_core.c for kernel duty. 2021-12-02 11:18:34 -08:00
map_in_map.c bpf: Remember BTF of inner maps. 2021-07-15 22:31:10 +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: Introduce MEM_RDONLY flag 2021-12-18 13:27:41 -08:00
mmap_unlock_work.h bpf: Introduce helper bpf_find_vma 2021-11-07 11:54:51 -08:00
net_namespace.c net: Add includes masked by netdevice.h including uapi/bpf.h 2021-12-29 20:03:05 -08:00
offload.c
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: Eliminate rlimit-based memory accounting for queue_stack_maps maps 2020-12-02 18:32:46 -08:00
reuseport_array.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
ringbuf.c bpf: Use VM_MAP instead of VM_ALLOC for ringbuf 2022-02-02 23:15:24 -08:00
stackmap.c bpf: Guard against accessing NULL pt_regs in bpf_get_task_stack() 2022-01-15 12:21:23 +11:00
syscall.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
sysfs_btf.c bpf: Load and verify kernel module BTFs 2020-11-10 15:25:53 -08:00
task_iter.c bpf: Introduce btf_tracing_ids 2021-11-12 10:19:09 -08:00
tnum.c bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul 2021-06-01 13:34:15 +02:00
trampoline.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
verifier.c bpf: Reject kfunc calls that overflow insn->imm 2022-02-15 10:05:11 -08:00