linux/tools
Alan Maguire 04cb8453a9 bpftool: JIT limited misreported as negative value on aarch64
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
2023-05-15 21:14:48 +02:00
..
accounting
arch Networking changes for 6.4. 2023-04-26 16:07:23 -07:00
bootconfig bootconfig: Fix testcase to increase max node 2023-03-22 01:00:28 +09:00
bpf bpftool: JIT limited misreported as negative value on aarch64 2023-05-15 21:14:48 +02:00
build tools build: Add test echo-cmd 2023-02-03 13:54:22 -03:00
certs
cgroup tools:cgroup:memcg_shrinker remove redundant import 2023-01-18 17:12:59 -08:00
counter
debugging
edid
firewire
firmware
gpio tools: gpio: fix -c option of gpio-event-mon 2023-01-27 14:05:46 +01:00
hv
iio tools/iio/iio_utils:fix memory leak 2023-01-21 17:52:26 +00:00
include Networking changes for 6.4. 2023-04-26 16:07:23 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib libbpf: fix offsetof() and container_of() to work with CO-RE 2023-05-12 12:05:21 -07:00
memory-model LKMM scripting updates for v6.4 2023-04-24 12:02:25 -07:00
mm slab changes for 6.4 2023-04-25 13:00:41 -07:00
net/ynl tools: ynl: Rename ethtool to ethtool.py 2023-04-13 22:18:29 -07:00
objtool for-6.4-tag 2023-04-26 09:13:44 -07:00
pci
pcmcia
perf perf tools fixes for v6.3: 2023-03-10 08:18:46 -08:00
power Power management updates for 6.4-rc1 2023-04-25 18:44:10 -07:00
rcu tools: rcu: Add usage function and check for argument 2023-03-11 18:10:17 -08:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2023-03-09 22:22:11 -08:00
spi
testing selftests/bpf: Correctly handle optlen > 4096 2023-05-13 16:55:46 -07:00
thermal
time
tracing tracing updates for 6.3: 2023-02-23 10:20:49 -08:00
usb
verification tools/rv: Remove unneeded semicolon 2023-01-31 19:21:12 -05:00
virtio tools/virtio: fix typo in README instructions 2023-04-04 11:01:58 -04:00
wmi
Makefile tools/Makefile: do missed s/vm/mm/ 2023-04-18 14:22:12 -07:00