linux/kernel/bpf
Song Liu 5d99cb2c86 bpf: Fail PERF_EVENT_IOC_SET_BPF when bpf_get_[stack|stackid] cannot work
bpf_get_[stack|stackid] on perf_events with precise_ip uses callchain
attached to perf_sample_data. If this callchain is not presented, do not
allow attaching BPF program that calls bpf_get_[stack|stackid] to this
event.

In the error case, -EPROTO is returned so that libbpf can identify this
error and print proper hint message.

Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200723180648.1429892-3-songliubraving@fb.com
2020-07-25 20:16:34 -07:00
..
arraymap.c bpf: Implement bpf iterator for array maps 2020-07-25 20:16:33 -07:00
bpf_iter.c bpf: Implement bpf iterator for map elements 2020-07-25 20:16:32 -07:00
bpf_lru_list.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
bpf_lru_list.h bpf: Fix a typo "inacitve" -> "inactive" 2020-04-06 21:54:10 +02:00
bpf_lsm.c bpf: Use tracing helpers for lsm programs 2020-06-01 15:08:04 -07:00
bpf_struct_ops_types.h bpf: tcp: Support tcp_congestion_ops in bpf 2020-01-09 08:46:18 -08:00
bpf_struct_ops.c bpf: Set map_btf_{name, id} for all map types 2020-06-22 22:22:58 +02:00
btf.c bpf: Support readonly/readwrite buffers in verifier 2020-07-25 20:16:32 -07:00
cgroup.c bpf: Don't return EINVAL from {get,set}sockopt when optlen > PAGE_SIZE 2020-06-17 10:54:05 -07:00
core.c bpf, netns: Handle multiple link attachments 2020-07-17 20:18:16 -07:00
cpumap.c bpf: cpumap: Fix possible rcpu kthread hung 2020-07-21 09:15:28 -07:00
devmap.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next 2020-07-04 17:48:34 -07:00
disasm.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
disasm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295 2019-06-05 17:36:38 +02:00
dispatcher.c bpf: Remove bpf_image tree 2020-03-13 12:49:52 -07:00
hashtab.c bpf: Implement bpf iterator for hash maps 2020-07-25 20:16:33 -07:00
helpers.c bpf: Implement BPF ring buffer and verifier support for it 2020-06-01 14:38:22 -07:00
inode.c bpf: Create file bpf iterator 2020-05-09 17:05:26 -07:00
local_storage.c bpf: Set map_btf_{name, id} for all map types 2020-06-22 22:22:58 +02:00
lpm_trie.c bpf: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
Makefile bpf: Add bpf_prog iterator 2020-07-25 20:16:32 -07:00
map_in_map.c bpf: Implement CAP_BPF 2020-05-15 17:29:41 +02:00
map_in_map.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
map_iter.c bpf: Implement bpf iterator for array maps 2020-07-25 20:16:33 -07:00
net_namespace.c bpf, netns: Fix build without CONFIG_INET 2020-07-21 09:12:34 -07:00
offload.c bpf, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill 2020-02-17 16:53:49 +01:00
percpu_freelist.c bpf: Dont iterate over possible CPUs with interrupts disabled 2020-02-24 16:18:20 -08:00
percpu_freelist.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
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: Remove redundant synchronize_rcu. 2020-07-01 08:07:13 -07:00
reuseport_array.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
ringbuf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-11 00:46:00 -07:00
stackmap.c bpf: Separate bpf_get_[stack|stackid] for perf events BPF 2020-07-25 20:16:34 -07:00
syscall.c bpf: Add bpf_prog iterator 2020-07-25 20:16:32 -07:00
sysfs_btf.c bpf: Support llvm-objcopy for vmlinux BTF 2020-03-19 12:32:38 +01:00
task_iter.c bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t 2020-07-25 20:16:32 -07:00
tnum.c bpf: Verifier, do explicit ALU32 bounds tracking 2020-03-30 14:59:53 -07:00
trampoline.c bpf: lsm: Implement attach, detach and execution 2020-03-30 01:34:00 +02:00
verifier.c bpf: Fail PERF_EVENT_IOC_SET_BPF when bpf_get_[stack|stackid] cannot work 2020-07-25 20:16:34 -07:00