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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/btrfs/export.h | |
| 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/btrfs/export.h')
| -rw-r--r-- | fs/btrfs/export.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/btrfs/export.h b/fs/btrfs/export.h new file mode 100644 index 000000000..464582273 --- /dev/null +++ b/fs/btrfs/export.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef BTRFS_EXPORT_H +#define BTRFS_EXPORT_H + +#include <linux/exportfs.h> +#include <linux/types.h> + +struct dentry; +struct super_block; + +extern const struct export_operations btrfs_export_ops; + +struct btrfs_fid { + u64 objectid; + u64 root_objectid; + u32 gen; + + u64 parent_objectid; + u32 parent_gen; + + u64 parent_root_objectid; +} __attribute__ ((packed)); + +struct dentry *btrfs_get_dentry(struct super_block *sb, u64 objectid, + u64 root_objectid, u64 generation); +struct dentry *btrfs_get_parent(struct dentry *child); + +#endif |