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linux/tools/bpf/bpftool
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Jakub Kicinski 5c939ebbd7 bpftool: Fix truncated netlink dumps 
[ Upstream commit 3b39d73cc3 ]

Netlink requires that the recv buffer used during dumps is at least
min(PAGE_SIZE, 8k) (see the man page). Otherwise the messages will
get truncated. Make sure bpftool follows this requirement, avoid
missing information on systems with large pages.

Acked-by: Quentin Monnet <qmo@kernel.org>
Fixes: 7084566a23 ("tools/bpftool: Remove libbpf_internal.h usage in bpftool")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20260217194150.734701-1-kuba@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-02-26 14:59:39 -08:00
..
bash-completion bpftool: Add bash completion for program signing options 2025-09-23 12:28:33 -07:00
Documentation bpf: add _impl suffix for bpf_stream_vprintk() kfunc 2025-11-04 17:50:25 -08:00
skeleton bpftool: Fix typo in MAX_NUM_METRICS macro name 2024-06-03 16:58:27 +02:00
.gitignore bpftool: Fix SPDX tag for Makefiles and .gitignore 2021-11-10 09:00:52 -08:00
btf.c bpftool: Use appropriate permissions for map access 2025-06-20 11:13:03 -07:00
btf_dumper.c bpftool: Fix -Wuninitialized-const-pointer warnings with clang >= 21 2025-09-19 15:42:42 -07:00
cfg.c bpftool: Fix control flow graph segfault during edge creation 2025-01-10 14:16:13 -08:00
cfg.h bpftool: Support printing opcodes and source file references in CFG 2023-04-05 21:27:27 -07:00
cgroup.c bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
common.c bpftool: Refactor kernel config reading into common helper 2025-09-02 17:20:54 +02:00
feature.c bpftool: Refactor kernel config reading into common helper 2025-09-02 17:20:54 +02:00
gen.c bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
iter.c bpftool: Use appropriate permissions for map access 2025-06-20 11:13:03 -07:00
jit_disasm.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
json_writer.c tools: bpftool: json: Fix backslash escape typo in jsonw_puts 2023-03-29 09:48:45 -07:00
json_writer.h tools: bpftool: json: Fix backslash escape typo in jsonw_puts 2023-03-29 09:48:45 -07:00
link.c bpftool: Add CET-aware symbol matching for x86_64 architectures 2025-09-02 17:20:54 +02:00
main.c bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
main.h bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
Makefile bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
map.c bpftool: Use appropriate permissions for map access 2025-06-20 11:13:03 -07:00
map_perf_ring.c bpftool: Use appropriate permissions for map access 2025-06-20 11:13:03 -07:00
net.c bpftool: Fix truncated netlink dumps 2026-02-26 14:59:39 -08:00
netlink_dumper.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
netlink_dumper.h bpftool: Extend net dump with tcx progs 2023-07-19 10:07:28 -07:00
perf.c bpftool: fix perf help message 2023-08-11 20:54:29 -07:00
pids.c bpftool: ensure task comm is always NUL-terminated 2024-11-05 17:12:29 -08:00
prog.c bpftool: Add support for signing BPF programs 2025-09-22 19:17:55 -07:00
sign.c bpftool: Allow bpftool to build with openssl < 3 2025-12-18 14:03:16 +01:00
struct_ops.c bpftool: Mount bpffs on provided dir instead of parent dir 2024-04-04 15:37:12 -07:00
token.c bpftool: Fix UAF in get_delegate_value 2025-09-19 15:37:30 -07:00
tracelog.c bpftool: Search for tracefs at /sys/kernel/tracing first 2025-09-15 10:10:28 -07:00
xlated_dumper.c bpftool: Using the right format specifiers 2025-03-17 13:50:56 -07:00
xlated_dumper.h bpftool: Dump the kernel symbol's module name 2023-07-11 20:07:50 -07:00