linux/kernel/bpf
Andrii Nakryiko 407958a0e9 bpf: encapsulate precision backtracking bookkeeping
Add struct backtrack_state and straightforward API around it to keep
track of register and stack masks used and maintained during precision
backtracking process. Having this logic separately allow to keep
high-level backtracking algorithm cleaner, but also it sets us up to
cleanly keep track of register and stack masks per frame, allowing (with
some further logic adjustments) to perform precision backpropagation
across multiple frames (i.e., subprog calls).

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20230505043317.3629845-4-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-05-04 22:35:35 -07:00
..
preload bpf: iterators: Split iterators.lskel.h into little- and big- endian versions 2023-01-28 12:45:15 -08:00
arraymap.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
bloom_filter.c bpf: compute hashes in bloom filter similar to hashmap 2023-04-02 08:44:49 -07:00
bpf_cgrp_storage.c bpf: Teach verifier that certain helpers accept NULL pointer. 2023-04-04 16:57:16 -07:00
bpf_inode_storage.c Networking changes for 6.4. 2023-04-26 16:07:23 -07:00
bpf_iter.c bpf: implement numbers iterator 2023-03-08 16:19:51 -08:00
bpf_local_storage.c bpf: Handle NULL in bpf_local_storage_free. 2023-04-12 10:27:50 -07:00
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 printk: stop including cache.h from printk.h 2022-05-13 07:20:07 -07:00
bpf_lsm.c bpf: Fix the kernel crash caused by bpf_setsockopt(). 2023-01-26 23:26:40 -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: Check IS_ERR for the bpf_map_get() return value 2023-03-24 12:40:47 -07:00
bpf_task_storage.c bpf: Teach verifier that certain helpers accept NULL pointer. 2023-04-04 16:57:16 -07:00
btf.c bpf: minimal support for programs hooked into netfilter framework 2023-04-21 11:34:14 -07:00
cgroup_iter.c bpf: Pin the start cgroup in cgroup_iter_seq_init() 2022-11-21 17:40:42 +01:00
cgroup.c bpf: Don't EFAULT for getsockopt with optval=NULL 2023-04-21 17:09:53 +02:00
core.c bpf: Support 64-bit pointers to kfuncs 2023-04-13 21:36:41 -07:00
cpumap.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
cpumask.c bpf: Treat KF_RELEASE kfuncs as KF_TRUSTED_ARGS 2023-03-25 16:56:22 -07:00
devmap.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
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 bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func 2022-12-14 12:02:14 -08:00
hashtab.c bpf: optimize hashmap lookups when key_size is divisible by 4 2023-04-01 15:08:19 -07:00
helpers.c bpf: Add bpf_dynptr_clone 2023-04-27 10:40:47 +02:00
inode.c fs: port inode_init_owner() to mnt_idmap 2023-01-19 09:24:28 +01:00
Kconfig rcu: Make the TASKS_RCU Kconfig option be selected 2022-04-20 16:52:58 -07:00
link_iter.c bpf: Add bpf_link iterator 2022-05-10 11:20:45 -07:00
local_storage.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
log.c bpf: Relax log_buf NULL conditions when log_level>0 is requested 2023-04-11 18:05:44 +02:00
lpm_trie.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
Makefile bpf: Split off basic BPF verifier log into separate file 2023-04-11 18:05:42 +02:00
map_in_map.c bpf: Remove btf_field_offs, use btf_record's fields instead 2023-04-15 17:36:49 -07:00
map_in_map.h
map_iter.c bpf: Introduce MEM_RDONLY flag 2021-12-18 13:27:41 -08:00
memalloc.c bpf: Add a few bpf mem allocator functions 2023-03-25 19:52:51 -07:00
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 bpf: offload map memory usage 2023-03-07 09:33:43 -08:00
percpu_freelist.c bpf: Initialize same number of free nodes for each pcpu_freelist 2022-11-11 12:05:14 -08:00
percpu_freelist.h
prog_iter.c
queue_stack_maps.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
reuseport_array.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
ringbuf.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
stackmap.c bpf: return long from bpf_map_ops funcs 2023-03-22 15:11:30 -07:00
syscall.c bpf: Print a warning only if writing to unprivileged_bpf_disabled. 2023-05-02 16:20:31 -07:00
sysfs_btf.c
task_iter.c bpf: keep a reference to the mm, in case the task is dead. 2022-12-28 14:11:48 -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 Networking changes for 6.4. 2023-04-26 16:07:23 -07:00
verifier.c bpf: encapsulate precision backtracking bookkeeping 2023-05-04 22:35:35 -07:00