IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
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: dca85aac8895 ("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>
c453e64cbc