security_file_mprotect() is missing from the sleepable_lsm_hooks BTF set. Add it so that operations performed by a BPF program which may result in the thread being put to sleep are permitted. Building a kernel with the DEBUG_ATOMIC_SLEEP confiuration option enabled and running reasonable workloads stimulating a BPF program attached to security_file_mprotect() which could end up performing an operation that could sleep resulted in no splats. Signed-off-by: Matt Bobrowski <mattbobrowski@xxxxxxxxxx> --- kernel/bpf/bpf_lsm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c index 68240c3c6e7d..da52c955f3ca 100644 --- a/kernel/bpf/bpf_lsm.c +++ b/kernel/bpf/bpf_lsm.c @@ -277,10 +277,13 @@ BTF_ID(func, bpf_lsm_bprm_creds_from_file) BTF_ID(func, bpf_lsm_capget) BTF_ID(func, bpf_lsm_capset) BTF_ID(func, bpf_lsm_cred_prepare) + BTF_ID(func, bpf_lsm_file_ioctl) BTF_ID(func, bpf_lsm_file_lock) BTF_ID(func, bpf_lsm_file_open) BTF_ID(func, bpf_lsm_file_receive) +BTF_ID(func, bpf_lsm_mmap_file) +BTF_ID(func, bpf_lsm_file_mprotect) BTF_ID(func, bpf_lsm_inode_create) BTF_ID(func, bpf_lsm_inode_free_security) @@ -316,7 +319,6 @@ BTF_ID(func, bpf_lsm_path_chown) BTF_ID(func, bpf_lsm_key_free) #endif /* CONFIG_KEYS */ -BTF_ID(func, bpf_lsm_mmap_file) BTF_ID(func, bpf_lsm_netlink_send) BTF_ID(func, bpf_lsm_path_notify) BTF_ID(func, bpf_lsm_release_secctx) -- 2.43.0.429.g432eaa2c6b-goog /M
