Wang Yufen 4448a8dd1e selftests/bpf: fix memory leak of lsm_cgroup ... [ Upstream commit c453e64cbc ] kmemleak reports this issue: unreferenced object 0xffff88810b7835c0 (size 32): comm "test_progs", pid 270, jiffies 4294969007 (age 1621.315s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 03 00 00 00 03 00 00 00 0f 00 00 00 00 00 00 00 ................ backtrace: [<00000000376cdeab>] kmalloc_trace+0x27/0x110 [<000000003bcdb3b6>] selinux_sk_alloc_security+0x66/0x110 [<000000003959008f>] security_sk_alloc+0x47/0x80 [<00000000e7bc6668>] sk_prot_alloc+0xbd/0x1a0 [<0000000002d6343a>] sk_alloc+0x3b/0x940 [<000000009812a46d>] unix_create1+0x8f/0x3d0 [<000000005ed0976b>] unix_create+0xa1/0x150 [<0000000086a1d27f>] __sock_create+0x233/0x4a0 [<00000000cffe3a73>] __sys_socket_create.part.0+0xaa/0x110 [<0000000007c63f20>] __sys_socket+0x49/0xf0 [<00000000b08753c8>] __x64_sys_socket+0x42/0x50 [<00000000b56e26b3>] do_syscall_64+0x3b/0x90 [<000000009b4871b8>] entry_SYSCALL_64_after_hwframe+0x63/0xcd The issue occurs in the following scenarios: unix_create1() sk_alloc() sk_prot_alloc() security_sk_alloc() call_int_hook() hlist_for_each_entry() entry1->hook.sk_alloc_security <-- selinux_sk_alloc_security() succeeded, <-- sk->security alloced here. entry2->hook.sk_alloc_security <-- bpf_lsm_sk_alloc_security() failed goto out_free; ... <-- the sk->security not freed, memleak The core problem is that the LSM is not yet fully stacked (work is actively going on in this space) which means that some LSM hooks do not support multiple LSMs at the same time. To fix, skip the "EPERM" test when it runs in the environments that already have non-bpf lsms installed Fixes: dca85aac88 ("selftests/bpf: lsm_cgroup functional test") Signed-off-by: Wang Yufen <wangyufen@huawei.com> Cc: Stanislav Fomichev <sdf@google.com> Acked-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/r/1668482980-16163-1-git-send-email-wangyufen@huawei.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-31 13:32:12 +01:00
..
accounting
arch	x86/cpu: Restore AMD's DE_CFG MSR after resume	2022-11-15 10:15:58 -08:00
bootconfig
bpf	bpftool: Fix NULL pointer dereference when pin {PROG, MAP, LINK} without FILE	2022-11-02 12:05:42 +01:00
build	perf bpf: Fix build with libbpf 0.7.0 by checking if bpf_program__set_insns() is available	2022-10-25 17:40:48 -03:00
certs
cgroup	iocost_monitor: reorder BlkgIterator	2022-09-23 16:57:10 -10:00
counter
debugging	tools: Add new "test" taint to kernel-chktaint	2022-09-07 14:51:12 -06:00
edid
firewire
firmware
gpio
hv	tools: hv: kvp: remove unnecessary (void*) conversions	2022-09-05 16:55:20 +00:00
iio	tools: iio: iio_generic_buffer: Fix read size	2022-11-01 08:48:13 +00:00
include	bpf-for-netdev	2022-11-03 19:51:02 -07:00
io_uring
kvm/kvm_stat	tools/kvm_stat: update exit reasons for vmx/svm/aarch64/userspace	2022-11-09 12:26:52 -05:00
laptop
leds
lib	libbpf: Btf dedup identical struct test needs check for nested structs/arrays	2022-12-31 13:32:04 +01:00
memory-model	tools/memory-model: Clarify LKMM's limitations in litmus-tests.txt	2022-08-31 05:15:31 -07:00
objtool	objtool, kcsan: Add volatile read/write instrumentation to whitelist	2022-12-31 13:31:48 +01:00
pci
pcmcia
perf	perf tools: Add the include/perf/ directory to .gitignore	2022-11-08 18:54:41 -03:00
power	pm-graph v5.10	2022-10-25 17:46:15 +02:00
rcu
scripts
spi
testing	selftests/bpf: fix memory leak of lsm_cgroup	2022-12-31 13:32:12 +01:00
thermal	tools/thermal: Fix possible path truncations	2022-08-03 19:28:46 +02:00
time
tracing	rtla: Consolidate and show all necessary libraries that failed for building	2022-08-10 12:03:02 -04:00
usb
verification	rv/dot2c: Make automaton definition static	2022-10-20 16:02:45 -04:00
virtio	virtio_test: fixup for vq reset	2022-09-27 18:30:49 -04:00
vm	tools/vm/slabinfo-gnuplot: use "grep -E" instead of "egrep"	2022-11-30 14:49:41 -08:00
wmi
Makefile