Alan Maguire 78f390aa0e bpftool: JIT limited misreported as negative value on aarch64 ... [ Upstream commit 04cb8453a9 ] On aarch64, "bpftool feature" reports an incorrect BPF JIT limit: $ sudo /sbin/bpftool feature Scanning system configuration... bpf() syscall restricted to privileged users JIT compiler is enabled JIT compiler hardening is disabled JIT compiler kallsyms exports are enabled for root skipping kernel config, can't open file: No such file or directory Global memory limit for JIT compiler for unprivileged users is -201326592 bytes This is because /proc/sys/net/core/bpf_jit_limit reports $ sudo cat /proc/sys/net/core/bpf_jit_limit 68169519595520 ...and an int is assumed in read_procfs(). Change read_procfs() to return a long to avoid negative value reporting. Fixes: 7a4522bbef ("tools: bpftool: add probes for /proc/ eBPF parameters") Reported-by: Nicky Veitch <nicky.veitch@oracle.com> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20230512113134.58996-1-alan.maguire@oracle.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-27 08:43:37 +02:00
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bpftool	bpftool: JIT limited misreported as negative value on aarch64	2023-07-27 08:43:37 +02:00
resolve_btfids	tools/resolve_btfids: Do not print any commands when building silently	2022-02-08 18:30:39 +01:00
runqslower	bpf, runqslower: include proper uapi/bpf.h	2020-05-09 18:01:33 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
bpf_asm.c	docs: networking: convert filter.txt to ReST	2020-04-28 14:39:46 -07:00
bpf_dbg.c	docs: networking: convert filter.txt to ReST	2020-04-28 14:39:46 -07:00
bpf_exp.l
bpf_exp.y	tools, bpf_asm: Warn when jumps are out of range	2019-11-07 16:01:34 +01:00
bpf_jit_disasm.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 232	2019-06-19 17:09:06 +02:00
Makefile	tools: bpf: Fix error in 'make -C tools/ bpf_install'	2021-07-25 14:36:21 +02:00
Makefile.helpers	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00