Andrii Nakryiko f42bcd168d bpf: teach verifier actual bounds of bpf_get_smp_processor_id() result ... bpf_get_smp_processor_id() helper returns current CPU on which BPF program runs. It can't return value that is bigger than maximum allowed number of CPUs (minus one, due to zero indexing). Teach BPF verifier to recognize that. This makes it possible to use bpf_get_smp_processor_id() result to index into arrays without extra checks, as demonstrated in subsequent selftests/bpf patch. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20230711232400.1658562-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>		2023-07-12 07:57:18 -07:00
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preload	bpf: make preloaded map iterators to display map elements count	2023-07-06 12:42:25 -07:00
arraymap.c	bpf: return long from bpf_map_ops funcs	2023-03-22 15:11:30 -07:00
bloom_filter.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
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: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
bpf_lru_list.c	bpf: Address KCSAN report on bpf_lru_list	2023-05-12 12:01:03 -07:00
bpf_lru_list.h	bpf: Address KCSAN report on bpf_lru_list	2023-05-12 12:01:03 -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: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
bpf_task_storage.c	bpf: Teach verifier that certain helpers accept NULL pointer.	2023-04-04 16:57:16 -07:00
btf.c	bpf: Resolve modifiers when walking structs	2023-06-30 10:35:59 +02:00
cgroup_iter.c	cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers	2023-03-17 12:07:13 -10:00
cgroup.c	bpf-next-for-netdev	2023-05-16 19:50:05 -07:00
core.c	bpf: Hide unused bpf_patch_call_args	2023-06-12 19:00:08 +02:00
cpumap.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
cpumask.c	bpf: Replace bpf_cpumask_any* with bpf_cpumask_any_distribute*	2023-06-12 15:09:11 -07:00
devmap.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
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: populate the per-cpu insertions/deletions counters for hashmaps	2023-07-06 12:42:25 -07:00
helpers.c	bpf: Make bpf_refcount_acquire fallible for non-owning refs	2023-06-05 13:17:20 -07:00
inode.c	bpf: Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands	2023-05-23 23:31:42 +02:00
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	cgroup changes for v6.4-rc1	2023-04-29 10:05:22 -07:00
log.c	bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log	2023-05-16 22:34:50 -07:00
lpm_trie.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
Makefile	bpf: Split off basic BPF verifier log into separate file	2023-04-11 18:05:42 +02:00
map_in_map.c	bpf: Fix elem_size not being set for inner maps	2023-06-02 16:22:12 -07:00
map_in_map.h	bpf: Add map_meta_equal map ops	2020-08-28 15:41:30 +02:00
map_iter.c	bpf: add a new kfunc to return current bpf_map elements count	2023-07-06 12:42:25 -07:00
memalloc.c	bpf: Factor out a common helper free_all()	2023-06-06 13:40:07 -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: netdev: init the offload table earlier	2023-05-15 07:07:41 -07:00
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	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: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
reuseport_array.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
ringbuf.c	bpf: Remove unnecessary ring buffer size check	2023-07-05 14:09:45 +02:00
stackmap.c	bpf: Centralize permissions checks for all BPF map types	2023-06-19 14:04:04 +02:00
syscall.c	bpf: Support ->fill_link_info for perf_event	2023-07-11 20:07:51 -07:00
sysfs_btf.c	bpf: Load and verify kernel module BTFs	2020-11-10 15:25:53 -08:00
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	bpf: Fix memleak due to fentry attach failure	2023-05-15 23:41:59 +02:00
verifier.c	bpf: teach verifier actual bounds of bpf_get_smp_processor_id() result	2023-07-12 07:57:18 -07:00