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Jiri Olsa db8eae6bc5 bpf: Force kprobe multi expected_attach_type for kprobe_multi link 
We currently allow to create perf link for program with
expected_attach_type == BPF_TRACE_KPROBE_MULTI.

This will cause crash when we call helpers like get_attach_cookie or
get_func_ip in such program, because it will call the kprobe_multi's
version (current->bpf_ctx context setup) of those helpers while it
expects perf_link's current->bpf_ctx context setup.

Making sure that we use BPF_TRACE_KPROBE_MULTI expected_attach_type
only for programs attaching through kprobe_multi link.

Fixes: ca74823c6e16 ("bpf: Add cookie support to programs attached with kprobe multi link")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230618131414.75649-1-jolsa@kernel.org
2023-06-21 10:40:26 +02:00
..
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/btf: Accept function names that contain dots
2023-06-21 10:32:22 +02:00
cgroup_iter.c
cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers
2023-03-17 12:07:13 -10:00
cgroup.c
cgroup changes for v6.4-rc1
2023-04-29 10:05:22 -07:00
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: fix a memory leak in the LRU and LRU_PERCPU hash maps
2023-05-22 10:26:39 -07:00
helpers.c
bpf: Fix bpf_refcount_acquire's refcount_t address calculation
2023-04-21 16:31:37 +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
cgroup changes for v6.4-rc1
2023-04-29 10:05:22 -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: Fix elem_size not being set for inner maps
2023-06-02 16:22:12 -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: 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
…
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: Force kprobe multi expected_attach_type for kprobe_multi link
2023-06-21 10:40:26 +02:00
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: ensure main program has an extable
2023-06-13 15:13:52 -07:00