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>

2026-02-13 14:14:27 -08:00

..

.gitignore

tools build: Correct bpf fixdep dependencies

2024-08-05 12:19:48 -03:00

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

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

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

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

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_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

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

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