linux/tools
Quentin Monnet 9bf48fa19a libbpf: Prevent null-pointer dereference when prog to load has no BTF
In bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL
when passing it to btf__fd(), and this function does not perform any
check before dereferencing its argument (as bpf_object__btf_fd() used to
do). As a consequence, we get segmentation fault errors in bpftool (for
example) when trying to load programs that come without BTF information.

v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().

Fixes: df7c3f7d3a ("libbpf: make uniform use of btf__fd() accessor inside libbpf")
Suggested-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Quentin Monnet <qmo@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240314150438.232462-1-qmo@kernel.org
2024-03-14 13:41:17 -07:00
..
accounting
arch Core x86 changes for v6.9: 2024-03-11 19:53:15 -07:00
bootconfig
bpf bpftool: Fix missing pids during link show 2024-03-14 13:37:43 -07:00
build
certs
cgroup samples: introduce new samples subdir for cgroup 2023-12-10 16:51:54 -08:00
counter tools/counter: Remove unneeded semicolon 2023-12-20 11:43:31 -05:00
crypto crypto: tcrypt - add script tcrypt_speed_compare.py 2023-12-29 11:25:55 +08:00
debugging
edid
firewire
firmware
gpio
hv
iio iio: add modifiers for A and B ultraviolet light 2023-12-04 13:57:24 +00:00
include for-netdev 2024-03-11 18:06:04 -07:00
kvm/kvm_stat
laptop
leds
lib libbpf: Prevent null-pointer dereference when prog to load has no BTF 2024-03-14 13:41:17 -07:00
memory-model
mm
net/ynl netlink: specs: support generating code for genl socket priv 2024-03-11 15:15:42 -07:00
objtool hardening updates for v6.9-rc1 2024-03-12 14:49:30 -07:00
pci
pcmcia
perf perf evlist: Fix evlist__new_default() for > 1 core PMU 2024-01-30 11:40:28 -03:00
power tools cpupower bench: Override CFLAGS assignments 2024-01-21 16:57:51 -07:00
rcu
scripts
spi
testing bpftool: Cast pointers for shadow types explicitly. 2024-03-14 13:34:21 -07:00
thermal tools/thermal/tmon: Fix compilation warning for wrong format 2024-01-02 09:33:19 +01:00
time
tracing tools/rtla: Exit with EXIT_SUCCESS when help is invoked 2024-02-12 10:59:09 +01:00
usb
verification tools/rv: Fix curr_reactor uninitialized variable 2024-02-12 09:58:36 +01:00
virtio tools: virtio: introduce vhost_net_test 2024-03-05 11:38:14 +01:00
wmi
workqueue workqueue: Implement BH workqueues to eventually replace tasklets 2024-02-04 11:28:06 -10:00
Makefile