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linux/tools/lib/bpf
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Amery Hung 04999b99e8 libbpf: Fix invalid write loop logic in bpf_linker__add_buf() 
Fix bpf_linker__add_buf()'s logic of copying data from memory buffer into
memfd. In the event of short write not writing entire buf_sz bytes into memfd
file, we'll append bytes from the beginning of buf *again* (corrupting ELF
file contents) instead of correctly appending the rest of not-yet-read buf
contents.

Closes: https://github.com/libbpf/libbpf/issues/945
Fixes: 6d5e5e5d7c ("libbpf: Extend linker API to support in-memory ELF files")
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20260209230134.3530521-1-ameryhung@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
History 2026-02-13 14:14:27 -08:00
..
.gitignore tools build: Correct bpf fixdep dependencies 2024-08-05 12:19:48 -03:00
bpf.c libbpf: add fsession support 2026-01-24 18:49:36 -08:00
bpf.h libbpf: Add BPF_F_CPU and BPF_F_ALL_CPUS flags support for percpu maps 2026-01-06 20:48:32 -08:00
bpf_core_read.h bpf: Fix uninitialized values in BPF_{CORE,PROBE}_READ 2025-05-05 14:20:28 -07:00
bpf_endian.h libbpf: Make bpf_endian co-exist with vmlinux.h 2020-07-01 09:06:12 +02:00
bpf_gen_internal.h libbpf: Embed and verify the metadata hash in the loader 2025-09-22 19:17:55 -07:00
bpf_helpers.h bpf: Migrate bpf_stream_vprintk() to KF_IMPLICIT_ARGS 2026-01-20 16:22:38 -08:00
bpf_prog_linfo.c libbpf: Streamline error reporting for high-level APIs 2021-05-25 17:32:35 -07:00
bpf_tracing.h libbpf: Fix powerpc's stack register definition in bpf_tracing.h 2025-10-23 11:25:16 -07:00
btf.c btf: Refactor the code by calling str_is_empty 2026-01-13 16:21:56 -08:00
btf.h libbpf: Add BTF permutation support for type reordering 2026-01-13 16:10:39 -08:00
btf_dump.c libbpf: Fix OOB read in btf_dump_get_bitfield_value 2026-01-09 15:54:31 -08:00
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 incorrect traversal end type ID when marking BTF_IS_EMBEDDED 2025-01-16 15:34:18 -08:00
Build libbpf: move libbpf_errstr() into libbpf_utils.c 2025-10-01 15:27:25 -07:00
elf.c libbpf: move libbpf_errstr() into libbpf_utils.c 2025-10-01 15:27:25 -07:00
features.c libbpf: Add gating for arena globals relocation feature 2026-02-13 14:14:27 -08:00
gen_loader.c libbpf: move libbpf_errstr() into libbpf_utils.c 2025-10-01 15:27:25 -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: Fix possible compiler warnings in hashmap 2024-10-11 12:36:59 -07:00
libbpf.c libbpf: Add gating for arena globals relocation feature 2026-02-13 14:14:27 -08:00
libbpf.h libbpf: Add BPF_F_CPU and BPF_F_ALL_CPUS flags support for percpu maps 2026-01-06 20:48:32 -08:00
libbpf.map libbpf: Add BTF permutation support for type reordering 2026-01-13 16:10:39 -08:00
libbpf.pc.template libbpf: Add zlib as a dependency in pkg-config template 2019-12-16 14:55:29 -08:00
libbpf_common.h libbpf: Fix potential uninitialized tail padding with LIBBPF_OPTS_RESET 2023-11-09 19:07:51 -08:00
libbpf_internal.h libbpf: Add gating for arena globals relocation feature 2026-02-13 14:14:27 -08:00
libbpf_legacy.h libbpf: Fix some typos in comments 2024-09-09 16:05:40 -07:00
libbpf_probes.c libbpf: Recognize insn_array map type 2025-11-05 17:31:25 -08:00
libbpf_utils.c libbpf: Fix undefined behavior in {get,put}_unaligned_be32() 2025-10-06 09:16:29 -07:00
libbpf_version.h libbpf: start v1.7 dev cycle 2025-07-16 18:37:27 -07:00
linker.c libbpf: Fix invalid write loop logic in bpf_linker__add_buf() 2026-02-13 14:14:27 -08:00
Makefile tools: Remove redundant quiet setup 2025-02-18 16:27:43 -03:00
netlink.c libbpf: Support creating and destroying qdisc 2025-04-17 10:54:41 -07:00
nlattr.c libbpf: Use proper errno value in nlattr 2025-05-12 15:22:54 -07:00
nlattr.h libbpf: add API to get XDP/XSK supported features 2023-02-02 20:48:24 -08:00
relo_core.c libbpf: move libbpf_errstr() into libbpf_utils.c 2025-10-01 15:27:25 -07:00
relo_core.h bpf, libbpf: Add type match support 2022-07-05 21:14:25 -07:00
ringbuf.c libbpf: move libbpf_errstr() into libbpf_utils.c 2025-10-01 15:27:25 -07:00
skel_internal.h libbpf: Update light skeleton for signing 2025-09-22 19:17:25 -07:00
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: Fix USDT SIB argument handling causing unrecognized register error 2025-08-27 15:44:25 -07:00
usdt.c tools: Remove s390 compat support 2025-11-17 11:10:38 +01:00
zip.c libbpf: Remove unneeded semicolon 2024-10-03 17:47:35 -07:00
zip.h libbpf: Implement basic zip archive parsing support 2023-03-01 16:05:34 -08:00