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OpenCloudOS-Kernel/kernel/bpf
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Tyrone Wu e5c2b971db bpf: fix unpopulated name_len field in perf_event link info 
[ Upstream commit 4deecdd29cf29844c7bd164d72dc38d2e672f64e ]

Previously when retrieving `bpf_link_info.perf_event` for
kprobe/uprobe/tracepoint, the `name_len` field was not populated by the
kernel, leaving it to reflect the value initially set by the user. This
behavior was inconsistent with how other input/output string buffer
fields function (e.g. `raw_tracepoint.tp_name_len`).

This patch fills `name_len` with the actual size of the string name.

Fixes: 1b715e1b0e ("bpf: Support ->fill_link_info for perf_event")
Signed-off-by: Tyrone Wu <wudevelops@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20241008164312.46269-1-wudevelops@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-11-01 01:58:19 +01:00
..
preload bpf: make preloaded map iterators to display map elements count 2023-07-06 12:42:25 -07:00
Kconfig bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -07:00
Makefile bpf: Add fd-based tcx multi-prog infra with link support 2023-07-19 10:07:27 -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: Add dummy BPF STRUCT_OPS for test purpose 2021-11-01 14:10:00 -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: Fix memory leak in bpf_core_apply 2024-11-01 01:58:18 +01:00
cgroup.c bpf: Add sockptr support for setsockopt 2024-09-12 11:11:34 +02:00
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 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: Check percpu map value size first 2024-10-17 15:24:15 +02:00
helpers.c bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error 2024-10-04 16:29:23 +02:00
inode.c bpf: convert to ctime accessor functions 2023-07-24 10:30:07 +02:00
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: Avoid kfree_rcu() under lock in bpf_lpm_trie. 2024-08-19 06:04:27 +02:00
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 bpf: Introduce helper bpf_find_vma 2021-11-07 11:54:51 -08:00
mprog.c bpf: Handle bpf_mprog_query with NULL entry 2023-10-06 17:11:20 -07:00
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: 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: Fix overrunning reservations in ringbuf 2024-07-05 09:33:47 +02:00
stackmap.c bpf: Fix stackmap overflow check on 32-bit arches 2024-03-26 18:19:39 -04:00
syscall.c bpf: fix unpopulated name_len field in perf_event link info 2024-11-01 01:58:19 +01:00
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
tcx.c bpf: Handle bpf_mprog_query with NULL entry 2023-10-06 17:11:20 -07:00
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, x64: Fix tailcall infinite loop 2023-11-20 11:58:55 +01:00
verifier.c bpf: Make the pointer returned by iter next method valid 2024-10-10 11:57:39 +02:00