Andreas Ziegler cedc12c5b5 libbpf: Add NULL checks to bpf_object__{prev_map,next_map} ... In the current state, an erroneous call to bpf_object__find_map_by_name(NULL, ...) leads to a segmentation fault through the following call chain: bpf_object__find_map_by_name(obj = NULL, ...) -> bpf_object__for_each_map(pos, obj = NULL) -> bpf_object__next_map((obj = NULL), NULL) -> return (obj = NULL)->maps While calling bpf_object__find_map_by_name with obj = NULL is obviously incorrect, this should not lead to a segmentation fault but rather be handled gracefully. As __bpf_map__iter already handles this situation correctly, we can delegate the check for the regular case there and only add a check in case the prev or next parameter is NULL. Signed-off-by: Andreas Ziegler <ziegler.andreas@siemens.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20240703083436.505124-1-ziegler.andreas@siemens.com		2024-07-08 18:13:07 +02:00
..
.gitignore	libbpf: Make libbpf_version.h non-auto-generated	2021-09-13 15:36:47 -07:00
bpf_core_read.h	bpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD	2024-05-08 15:00:55 -07:00
bpf_endian.h
bpf_gen_internal.h	libbpf: Support kfunc detection in light skeleton.	2023-03-22 09:31:05 -07:00
bpf_helpers.h	libbpf: Fix bpf_ksym_exists() in GCC	2024-05-02 22:47:22 -07:00
bpf_prog_linfo.c	libbpf: Streamline error reporting for high-level APIs	2021-05-25 17:32:35 -07:00
bpf_tracing.h	libbpf: Avoid casts from pointers to enums in bpf_tracing.h	2024-05-02 22:58:58 -07:00
bpf.c	libbpf: fix feature detectors when using token_fd	2024-05-15 09:34:53 -07:00
bpf.h	libbpf: add support for BPF cookie for raw_tp/tp_btf programs	2024-03-19 23:05:34 -07:00
btf_dump.c	libbpf: Fix dump of subsequent char arrays	2024-04-17 15:24:02 +02:00
btf_iter.c	libbpf,bpf: Share BTF relocate-related code with kernel	2024-06-21 14:45:07 -07:00
btf_relocate.c	libbpf: Fix clang compilation error in btf_relocate.c	2024-06-26 16:38:59 -07:00
btf.c	libbpf: Fix error handling in btf__distill_base()	2024-07-01 17:05:08 +02:00
btf.h	libbpf: Make btf_parse_elf process .BTF.base transparently	2024-06-17 14:38:31 -07:00
Build	libbpf: Split field iter code into its own file kernel	2024-06-21 14:45:07 -07:00
elf.c	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
features.c	libbpf: don't close(-1) in multi-uprobe feature detector	2024-05-31 14:56:51 -07:00
gen_loader.c	libbpf: Store zero fd to fd_array for loader kfunc relocation	2023-05-16 22:09:23 -07:00
hashmap.c	libbpf: Hashmap interface update to allow both long and void* keys/values	2022-11-09 20:45:14 -08:00
hashmap.h	libbpf: Remove HASHMAP_INIT static initialization helper	2023-07-11 09:40:05 -07:00
libbpf_common.h	libbpf: Fix potential uninitialized tail padding with LIBBPF_OPTS_RESET	2023-11-09 19:07:51 -08:00
libbpf_errno.c	libbpf: Optimized return value in libbpf_strerror when errno is libbpf errno	2022-12-14 18:39:33 +01:00
libbpf_internal.h	libbpf: Split BTF relocation	2024-06-17 14:38:31 -07:00
libbpf_legacy.h	libbpf: Clean up deprecated and legacy aliases	2022-08-17 22:42:56 +02:00
libbpf_probes.c	bpf: improve error message for unsupported helper	2024-03-28 18:30:53 -07:00
libbpf_version.h	libbpf: Start v1.5 development cycle	2024-04-06 09:11:10 -07:00
libbpf.c	libbpf: Add NULL checks to bpf_object__{prev_map,next_map}	2024-07-08 18:13:07 +02:00
libbpf.h	libbpf: Auto-attach struct_ops BPF maps in BPF skeleton	2024-06-06 10:06:05 -07:00
libbpf.map	libbpf: Split BTF relocation	2024-06-17 14:38:31 -07:00
libbpf.pc.template
linker.c	libbpf: Checking the btf_type kind when fixing variable offsets	2024-06-21 20:00:17 +02:00
Makefile	kbuild: unexport abs_srctree and abs_objtree	2024-03-10 17:27:17 +09:00
netlink.c	libbpf: Use OPTS_SET() macro in bpf_xdp_query()	2024-02-06 09:51:26 -08:00
nlattr.c	libbpf: Fix alen calculation in libbpf_nla_dump_errormsg()	2023-02-10 15:27:22 -08:00
nlattr.h	libbpf: add API to get XDP/XSK supported features	2023-02-02 20:48:24 -08:00
relo_core.c	libbpf: fix signedness determination in CO-RE relo handling logic	2023-08-23 21:13:48 -07:00
relo_core.h	bpf, libbpf: Add type match support	2022-07-05 21:14:25 -07:00
ringbuf.c	libbpf: fix ring_buffer__consume_n() return result logic	2024-05-02 16:41:03 -07:00
skel_internal.h	libbpf: add map_get_fd_by_id and map_delete_elem in light skeleton	2022-08-25 18:52:29 -07:00
str_error.c	libbpf: fix libbpf_strerror_r() handling unknown errors	2024-05-07 16:21:59 -07:00
str_error.h	libbpf: Move feature detection code into its own file	2024-01-24 16:21:02 -08:00
strset.c	libbpf: Hashmap interface update to allow both long and void* keys/values	2022-11-09 20:45:14 -08:00
strset.h	libbpf: Extract internal set-of-strings datastructure APIs	2021-03-18 16:14:22 -07:00
usdt.bpf.h	libbpf: Avoid casts from pointers to enums in bpf_tracing.h	2024-05-02 22:58:58 -07:00
usdt.c	libbpf: Add uprobe multi link support to bpf_program__attach_usdt	2023-08-21 15:51:26 -07:00
zip.c	libbpf: Ignore warnings about "inefficient alignment"	2023-03-16 18:20:08 +01:00
zip.h	libbpf: Implement basic zip archive parsing support	2023-03-01 16:05:34 -08:00