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-rw-r--r--fs/btrfs/ctree.h7
-rw-r--r--fs/btrfs/extent-tree.c39
-rw-r--r--fs/btrfs/print-tree.c9
-rw-r--r--fs/btrfs/relocation.c27
4 files changed, 72 insertions, 10 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9fa958ed065e..427ca5de8542 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3432,6 +3432,13 @@ static inline void assfail(char *expr, char *file, int line)
#define ASSERT(expr) ((void)0)
#endif
+__cold
+static inline void btrfs_print_v0_err(struct btrfs_fs_info *fs_info)
+{
+ btrfs_err(fs_info,
+"Unsupported V0 extent filesystem detected. Aborting. Please re-create your filesystem with a newer kernel");
+}
+
__printf(5, 6)
__cold
void __btrfs_handle_fs_error(struct btrfs_fs_info *fs_info, const char *function,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6a73d2698807..71283faa85e2 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -867,8 +867,16 @@ search_again:
num_refs = btrfs_extent_refs(leaf, ei);
extent_flags = btrfs_extent_flags(leaf, ei);
} else {
- BUG();
+ ret = -EINVAL;
+ btrfs_print_v0_err(fs_info);
+ if (trans)
+ btrfs_abort_transaction(trans, ret);
+ else
+ btrfs_handle_fs_error(fs_info, ret, NULL);
+
+ goto out_free;
}
+
BUG_ON(num_refs == 0);
} else {
num_refs = 0;
@@ -1296,6 +1304,10 @@ static noinline int remove_extent_data_ref(struct btrfs_trans_handle *trans,
ref2 = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_shared_data_ref);
num_refs = btrfs_shared_data_ref_count(leaf, ref2);
+ } else if (key.type == BTRFS_EXTENT_REF_V0_KEY) {
+ btrfs_print_v0_err(trans->fs_info);
+ btrfs_abort_transaction(trans, -EINVAL);
+ return -EINVAL;
} else {
BUG();
}
@@ -1328,6 +1340,8 @@ static noinline u32 extent_data_ref_count(struct btrfs_path *path,
leaf = path->nodes[0];
btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);
+
+ BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY);
if (iref) {
/*
* If type is invalid, we should have bailed out earlier than
@@ -1541,7 +1555,12 @@ again:
leaf = path->nodes[0];
item_size = btrfs_item_size_nr(leaf, path->slots[0]);
- BUG_ON(item_size < sizeof(*ei));
+ if (item_size < sizeof(*ei)) {
+ err = -EINVAL;
+ btrfs_print_v0_err(fs_info);
+ btrfs_abort_transaction(trans, err);
+ goto out;
+ }
ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
flags = btrfs_extent_flags(leaf, ei);
@@ -2265,7 +2284,14 @@ again:
leaf = path->nodes[0];
item_size = btrfs_item_size_nr(leaf, path->slots[0]);
- BUG_ON(item_size < sizeof(*ei));
+
+ if (item_size < sizeof(*ei)) {
+ err = -EINVAL;
+ btrfs_print_v0_err(fs_info);
+ btrfs_abort_transaction(trans, err);
+ goto out;
+ }
+
ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
__run_delayed_extent_op(extent_op, leaf, ei);
@@ -6796,7 +6822,12 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
leaf = path->nodes[0];
item_size = btrfs_item_size_nr(leaf, extent_slot);
- BUG_ON(item_size < sizeof(*ei));
+ if (item_size < sizeof(*ei)) {
+ ret = -EINVAL;
+ btrfs_print_v0_err(info);
+ btrfs_abort_transaction(trans, ret);
+ goto out;
+ }
ei = btrfs_item_ptr(leaf, extent_slot,
struct btrfs_extent_item);
if (owner_objectid < BTRFS_FIRST_FREE_OBJECTID &&
diff --git a/fs/btrfs/print-tree.c b/fs/btrfs/print-tree.c
index c0dac9d7ce33..cc945376c244 100644
--- a/fs/btrfs/print-tree.c
+++ b/fs/btrfs/print-tree.c
@@ -52,8 +52,10 @@ static void print_extent_item(struct extent_buffer *eb, int slot, int type)
u64 offset;
int ref_index = 0;
- if (item_size < sizeof(*ei))
- BUG();
+ if (item_size < sizeof(*ei)) {
+ btrfs_print_v0_err(eb->fs_info);
+ btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL);
+ }
ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
flags = btrfs_extent_flags(eb, ei);
@@ -256,7 +258,8 @@ void btrfs_print_leaf(struct extent_buffer *l)
btrfs_file_extent_ram_bytes(l, fi));
break;
case BTRFS_EXTENT_REF_V0_KEY:
- BUG();
+ btrfs_print_v0_err(fs_info);
+ btrfs_handle_fs_error(fs_info, -EINVAL, NULL);
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
bi = btrfs_item_ptr(l, i,
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 6dfa92e5ceed..eaf59c742dc8 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -598,6 +598,11 @@ int find_inline_backref(struct extent_buffer *leaf, int slot,
btrfs_item_key_to_cpu(leaf, &key, slot);
item_size = btrfs_item_size_nr(leaf, slot);
+ if (item_size < sizeof(*ei)) {
+ btrfs_print_v0_err(leaf->fs_info);
+ btrfs_handle_fs_error(leaf->fs_info, -EINVAL, NULL);
+ return 1;
+ }
ei = btrfs_item_ptr(leaf, slot, struct btrfs_extent_item);
WARN_ON(!(btrfs_extent_flags(leaf, ei) &
BTRFS_EXTENT_FLAG_TREE_BLOCK));
@@ -782,7 +787,6 @@ again:
goto next;
}
- ASSERT(key.type != BTRFS_EXTENT_REF_V0_KEY);
if (key.type == BTRFS_SHARED_BLOCK_REF_KEY) {
if (key.objectid == key.offset) {
/*
@@ -826,6 +830,12 @@ again:
edge->node[UPPER] = upper;
goto next;
+ } else if (key.type == BTRFS_EXTENT_REF_V0_KEY) {
+ err = -EINVAL;
+ btrfs_print_v0_err(rc->extent_root->fs_info);
+ btrfs_handle_fs_error(rc->extent_root->fs_info, err,
+ NULL);
+ goto out;
} else if (key.type != BTRFS_TREE_BLOCK_REF_KEY) {
goto next;
}
@@ -3315,6 +3325,10 @@ static int add_tree_block(struct reloc_control *rc,
level = (int)extent_key->offset;
}
generation = btrfs_extent_generation(eb, ei);
+ } else if (item_size == sizeof(struct btrfs_extent_item_v0)) {
+ btrfs_print_v0_err(eb->fs_info);
+ btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL);
+ return -EINVAL;
} else {
BUG();
}
@@ -3720,7 +3734,6 @@ int add_data_references(struct reloc_control *rc,
if (key.objectid != extent_key->objectid)
break;
- BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY);
if (key.type == BTRFS_SHARED_DATA_REF_KEY) {
ret = __add_tree_block(rc, key.offset, blocksize,
blocks);
@@ -3729,6 +3742,10 @@ int add_data_references(struct reloc_control *rc,
struct btrfs_extent_data_ref);
ret = find_data_references(rc, extent_key,
eb, dref, blocks);
+ } else if (key.type == BTRFS_EXTENT_REF_V0_KEY) {
+ btrfs_print_v0_err(eb->fs_info);
+ btrfs_handle_fs_error(eb->fs_info, -EINVAL, NULL);
+ ret = -EINVAL;
} else {
ret = 0;
}
@@ -3967,7 +3984,11 @@ restart:
flags = btrfs_extent_flags(path->nodes[0], ei);
ret = check_extent_flags(flags);
BUG_ON(ret);
-
+ } else if (item_size == sizeof(struct btrfs_extent_item_v0)) {
+ err = -EINVAL;
+ btrfs_print_v0_err(trans->fs_info);
+ btrfs_abort_transaction(trans, err);
+ break;
} else {
BUG();
}
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-18 20:41:32 +0300