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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /fs/lockd/netlink.c | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'fs/lockd/netlink.c')
| -rw-r--r-- | fs/lockd/netlink.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/fs/lockd/netlink.c b/fs/lockd/netlink.c new file mode 100644 index 000000000..880c42b4f --- /dev/null +++ b/fs/lockd/netlink.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) +/* Do not edit directly, auto-generated from: */ +/* Documentation/netlink/specs/lockd.yaml */ +/* YNL-GEN kernel source */ +/* To regenerate run: tools/net/ynl/ynl-regen.sh */ + +#include <net/netlink.h> +#include <net/genetlink.h> + +#include "netlink.h" + +#include <uapi/linux/lockd_netlink.h> + +/* LOCKD_CMD_SERVER_SET - do */ +static const struct nla_policy lockd_server_set_nl_policy[LOCKD_A_SERVER_UDP_PORT + 1] = { + [LOCKD_A_SERVER_GRACETIME] = { .type = NLA_U32, }, + [LOCKD_A_SERVER_TCP_PORT] = { .type = NLA_U16, }, + [LOCKD_A_SERVER_UDP_PORT] = { .type = NLA_U16, }, +}; + +/* Ops table for lockd */ +static const struct genl_split_ops lockd_nl_ops[] = { + { + .cmd = LOCKD_CMD_SERVER_SET, + .doit = lockd_nl_server_set_doit, + .policy = lockd_server_set_nl_policy, + .maxattr = LOCKD_A_SERVER_UDP_PORT, + .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO, + }, + { + .cmd = LOCKD_CMD_SERVER_GET, + .doit = lockd_nl_server_get_doit, + .flags = GENL_CMD_CAP_DO, + }, +}; + +struct genl_family lockd_nl_family __ro_after_init = { + .name = LOCKD_FAMILY_NAME, + .version = LOCKD_FAMILY_VERSION, + .netnsok = true, + .parallel_ops = true, + .module = THIS_MODULE, + .split_ops = lockd_nl_ops, + .n_split_ops = ARRAY_SIZE(lockd_nl_ops), +}; |