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bianbu-linux-6.6/kernel/bpf
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Hou Tao d5092b0a1a bpf: Check validity of link->type in bpf_link_show_fdinfo() 
[ Upstream commit 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 ]

If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing
bpf_link_type_strs[link->type] may result in an out-of-bounds access.

To spot such missed invocations early in the future, checking the
validity of link->type in bpf_link_show_fdinfo() and emitting a warning
when such invocations are missed.

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20241024013558.1135167-3-houtao@huaweicloud.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-17 15:08:58 +01:00
..
preload bpf: make preloaded map iterators to display map elements count 2023-07-06 12:42:25 -07:00
arraymap.c bpf: Check percpu map value size first 2024-10-17 15:24:15 +02:00
bloom_filter.c bpf: Check bloom filter map value size 2024-05-17 12:02:11 +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: fix order of args in call to bpf_map_kvcalloc 2024-07-18 13:21:13 +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: lru: Remove unused declaration bpf_lru_promote() 2023-08-08 17:21:42 -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.c bpf: Support default .validate() and .update() behavior for struct_ops links 2023-08-14 22:23:39 -07:00
bpf_struct_ops_types.h
bpf_task_storage.c bpf: Teach verifier that certain helpers accept NULL pointer. 2023-04-04 16:57:16 -07:00
btf.c bpf: Fix memory leak in bpf_core_apply 2024-11-01 01:58:18 +01:00
cgroup.c cgroup/bpf: use a dedicated workqueue for cgroup bpf destruction 2024-11-08 16:28:24 +01:00
cgroup_iter.c cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers 2023-03-17 12:07:13 -10:00
core.c bpf: Prevent tail call between progs attached to different hooks 2024-10-17 15:24:16 +02:00
cpumap.c bpf: report RCU QS in cpumap kthread 2024-03-26 18:20:12 -04:00
cpumask.c bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu. 2023-07-12 23:45:23 +02:00
devmap.c bpf: devmap: provide rxq after redirect 2024-11-01 01:58:17 +01:00
disasm.c bpf: change bpf_alu_sign_string and bpf_movsx_string to static 2023-08-04 16:15:50 -07:00
disasm.h
dispatcher.c bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func 2022-12-14 12:02:14 -08:00
hashtab.c bpf: Check percpu map value size first 2024-10-17 15:24:15 +02:00
helpers.c bpf: Add MEM_WRITE attribute 2024-11-01 01:58:30 +01:00
inode.c bpf: convert to ctime accessor functions 2023-07-24 10:30:07 +02:00
Kconfig bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -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: Fix out-of-bounds write in trie_get_next_key() 2024-11-08 16:28:18 +01:00
Makefile bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -07:00
map_in_map.c bpf: Optimize the free of inner map 2024-06-21 14:38:15 +02:00
map_in_map.h bpf: Add map and need_defer parameters to .map_fd_put_ptr() 2024-01-25 15:35:22 -08:00
map_iter.c bpf: allow any program to use the bpf_map_sum_elem_count kfunc 2023-07-19 09:48:53 -07:00
memalloc.c bpf: Use c->unit_size to select target cache during free 2024-01-25 15:35:28 -08:00
mmap_unlock_work.h
mprog.c bpf: Handle bpf_mprog_query with NULL entry 2023-10-06 17:11:20 -07:00
net_namespace.c
offload.c bpf: Avoid dummy bpf_offload_netdev in __bpf_prog_dev_bound_init 2023-09-11 22:06:06 -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
prog_iter.c
queue_stack_maps.c bpf: Avoid deadlock when using queue and stack maps from NMI 2023-09-11 19:04:49 -07:00
reuseport_array.c bpf: Centralize permissions checks for all BPF map types 2023-06-19 14:04:04 +02:00
ringbuf.c bpf: Add MEM_WRITE attribute 2024-11-01 01:58:30 +01:00
stackmap.c bpf: Fix stackmap overflow check on 32-bit arches 2024-03-26 18:19:39 -04:00
syscall.c bpf: Check validity of link->type in bpf_link_show_fdinfo() 2024-11-17 15:08:58 +01:00
sysfs_btf.c
task_iter.c bpf: Fix iter/task tid filtering 2024-11-01 01:58:25 +01:00
tcx.c bpf: Handle bpf_mprog_query with NULL entry 2023-10-06 17:11:20 -07:00
tnum.c
trampoline.c bpf, x64: Fix tailcall infinite loop 2023-11-20 11:58:55 +01:00
verifier.c bpf: use kvzmalloc to allocate BPF verifier environment 2024-11-17 15:08:56 +01:00