Alexei Starovoitov afeebf9f57 bpf: Undo strict enforcement for walking untagged fields. ...

The commit 6fcd486b3a ("bpf: Refactor RCU enforcement in the verifier.")
broke several tracing bpf programs. Even in clang compiled kernels there are
many fields that are not marked with __rcu that are safe to read and pass into
helpers, but the verifier doesn't know that they're safe. Aggressively marking
them as PTR_UNTRUSTED was premature.

Fixes: 6fcd486b3a ("bpf: Refactor RCU enforcement in the verifier.")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: David Vernet <void@manifault.com>
Link: https://lore.kernel.org/bpf/20230404045029.82870-8-alexei.starovoitov@gmail.com

2023-04-04 16:57:24 -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

bpf: Teach verifier that certain helpers accept NULL pointer.

2023-04-04 16:57:16 -07:00

bpf_iter.c

bpf: implement numbers iterator

2023-03-08 16:19:51 -08:00

bpf_local_storage.c

bpf: Use bpf_mem_cache_alloc/free for bpf_local_storage

2023-03-25 19:52:52 -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: Refactor btf_nested_type_is_trusted().

2023-04-04 16:57:14 -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: allow ctx writes using BPF_ST_MEM instruction

2023-03-03 21:41:46 -08:00

core.c

bpf: add missing header file include

2023-02-22 09:52:32 -08:00

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: Remove now-defunct task kfuncs

2023-04-01 09:07:20 -07:00

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

lpm_trie.c

bpf: return long from bpf_map_ops funcs

2023-03-22 15:11:30 -07:00

Makefile

bpf: Enable cpumasks to be queried and used as kptrs

2023-01-25 07:57:49 -08:00

map_in_map.c

bpf: Add comments for map BTF matching requirement for bpf_list_head

2022-11-17 19:22:14 -08:00

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: Only invoke kptr dtor following non-NULL xchg

2023-03-25 16:56:22 -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

bpf: Fix attaching fentry/fexit/fmod_ret/lsm to modules

2023-03-15 18:38:21 -07:00

verifier.c

bpf: Undo strict enforcement for walking untagged fields.

2023-04-04 16:57:24 -07:00