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btrfs: tree-checker: Replace root parameter with fs_info 

When inspecting the error message with real corruption, the "root=%llu"
always shows "1" (root tree), instead of the correct owner.

The problem is that we are getting @root from page->mapping->host, which
points the same btree inode, so we will always get the same root.

This makes the root owner output meaningless, and harder to port
tree-checker to btrfs-progs.

So get rid of the false and meaningless @root parameter and replace it
with @fs_info.
To get the owner, we can only rely on btrfs_header_owner() now.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2018-01-25 14:56:18 +08:00 committed by David Sterba
parent 393da91819
commit 2f659546c9
3 changed files with 82 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
fs/btrfs/disk-io.c
View File

@ -602,12 +602,12 @@ static int btree_readpage_end_io_hook(struct btrfs_io_bio *io_bio,
* that we don't try and read the other copies of this block, just
* return -EIO.
*/
if (found_level == 0 && btrfs_check_leaf_full(root, eb)) {
if (found_level == 0 && btrfs_check_leaf_full(fs_info, eb)) {
set_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags);
ret = -EIO;
}
if (found_level > 0 && btrfs_check_node(root, eb))
if (found_level > 0 && btrfs_check_node(fs_info, eb))
ret = -EIO;
if (!ret)
@ -3854,7 +3854,7 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf)
* So here we should only check item pointers, not item data.
*/
if (btrfs_header_level(buf) == 0 &&
btrfs_check_leaf_relaxed(root, buf)) {
btrfs_check_leaf_relaxed(fs_info, buf)) {
btrfs_print_leaf(buf);
ASSERT(0);
}

153
fs/btrfs/tree-checker.c
View File

@ -53,7 +53,7 @@
* Allows callers to customize the output.
*/
__printf(4, 5)
static void generic_err(const struct btrfs_root *root,
static void generic_err(const struct btrfs_fs_info *fs_info,
const struct extent_buffer *eb, int slot,
const char *fmt, ...)
{
@ -65,10 +65,10 @@ static void generic_err(const struct btrfs_root *root,
vaf.fmt = fmt;
vaf.va = &args;
btrfs_crit(root->fs_info,
btrfs_crit(fs_info,
"corrupt %s: root=%llu block=%llu slot=%d, %pV",
btrfs_header_level(eb) == 0 ? "leaf" : "node",
root->objectid, btrfs_header_bytenr(eb), slot, &vaf);
btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, &vaf);
va_end(args);
}
@ -77,7 +77,7 @@ static void generic_err(const struct btrfs_root *root,
* offset has its own meaning.
*/
__printf(4, 5)
static void file_extent_err(const struct btrfs_root *root,
static void file_extent_err(const struct btrfs_fs_info *fs_info,
const struct extent_buffer *eb, int slot,
const char *fmt, ...)
{
@ -91,10 +91,11 @@ static void file_extent_err(const struct btrfs_root *root,
vaf.fmt = fmt;
vaf.va = &args;
btrfs_crit(root->fs_info,
btrfs_crit(fs_info,
"corrupt %s: root=%llu block=%llu slot=%d ino=%llu file_offset=%llu, %pV",
btrfs_header_level(eb) == 0 ? "leaf" : "node", root->objectid,
btrfs_header_bytenr(eb), slot, key.objectid, key.offset, &vaf);
btrfs_header_level(eb) == 0 ? "leaf" : "node",
btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot,
key.objectid, key.offset, &vaf);
va_end(args);
}
@ -102,26 +103,26 @@ static void file_extent_err(const struct btrfs_root *root,
* Return 0 if the btrfs_file_extent_##name is aligned to @alignment
* Else return 1
*/
#define CHECK_FE_ALIGNED(root, leaf, slot, fi, name, alignment) \
#define CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, name, alignment) \
({ \
if (!IS_ALIGNED(btrfs_file_extent_##name((leaf), (fi)), (alignment))) \
file_extent_err((root), (leaf), (slot), \
file_extent_err((fs_info), (leaf), (slot), \
"invalid %s for file extent, have %llu, should be aligned to %u", \
(#name), btrfs_file_extent_##name((leaf), (fi)), \
(alignment)); \
(!IS_ALIGNED(btrfs_file_extent_##name((leaf), (fi)), (alignment))); \
})
static int check_extent_data_item(struct btrfs_root *root,
static int check_extent_data_item(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf,
struct btrfs_key *key, int slot)
{
struct btrfs_file_extent_item *fi;
u32 sectorsize = root->fs_info->sectorsize;
u32 sectorsize = fs_info->sectorsize;
u32 item_size = btrfs_item_size_nr(leaf, slot);
if (!IS_ALIGNED(key->offset, sectorsize)) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"unaligned file_offset for file extent, have %llu should be aligned to %u",
key->offset, sectorsize);
return -EUCLEAN;
@ -130,7 +131,7 @@ static int check_extent_data_item(struct btrfs_root *root,
fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
if (btrfs_file_extent_type(leaf, fi) > BTRFS_FILE_EXTENT_TYPES) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid type for file extent, have %u expect range [0, %u]",
btrfs_file_extent_type(leaf, fi),
BTRFS_FILE_EXTENT_TYPES);
@ -142,14 +143,14 @@ static int check_extent_data_item(struct btrfs_root *root,
* and must be caught in open_ctree().
*/
if (btrfs_file_extent_compression(leaf, fi) > BTRFS_COMPRESS_TYPES) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid compression for file extent, have %u expect range [0, %u]",
btrfs_file_extent_compression(leaf, fi),
BTRFS_COMPRESS_TYPES);
return -EUCLEAN;
}
if (btrfs_file_extent_encryption(leaf, fi)) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid encryption for file extent, have %u expect 0",
btrfs_file_extent_encryption(leaf, fi));
return -EUCLEAN;
@ -157,7 +158,7 @@ static int check_extent_data_item(struct btrfs_root *root,
if (btrfs_file_extent_type(leaf, fi) == BTRFS_FILE_EXTENT_INLINE) {
/* Inline extent must have 0 as key offset */
if (key->offset) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid file_offset for inline file extent, have %llu expect 0",
key->offset);
return -EUCLEAN;
@ -171,7 +172,7 @@ static int check_extent_data_item(struct btrfs_root *root,
/* Uncompressed inline extent size must match item size */
if (item_size != BTRFS_FILE_EXTENT_INLINE_DATA_START +
btrfs_file_extent_ram_bytes(leaf, fi)) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid ram_bytes for uncompressed inline extent, have %u expect %llu",
item_size, BTRFS_FILE_EXTENT_INLINE_DATA_START +
btrfs_file_extent_ram_bytes(leaf, fi));
@ -182,40 +183,41 @@ static int check_extent_data_item(struct btrfs_root *root,
/* Regular or preallocated extent has fixed item size */
if (item_size != sizeof(*fi)) {
file_extent_err(root, leaf, slot,
file_extent_err(fs_info, leaf, slot,
"invalid item size for reg/prealloc file extent, have %u expect %zu",
item_size, sizeof(*fi));
return -EUCLEAN;
}
if (CHECK_FE_ALIGNED(root, leaf, slot, fi, ram_bytes, sectorsize) ||
CHECK_FE_ALIGNED(root, leaf, slot, fi, disk_bytenr, sectorsize) ||
CHECK_FE_ALIGNED(root, leaf, slot, fi, disk_num_bytes, sectorsize) ||
CHECK_FE_ALIGNED(root, leaf, slot, fi, offset, sectorsize) ||
CHECK_FE_ALIGNED(root, leaf, slot, fi, num_bytes, sectorsize))
if (CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, ram_bytes, sectorsize) ||
CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, disk_bytenr, sectorsize) ||
CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, disk_num_bytes, sectorsize) ||
CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, offset, sectorsize) ||
CHECK_FE_ALIGNED(fs_info, leaf, slot, fi, num_bytes, sectorsize))
return -EUCLEAN;
return 0;
}
static int check_csum_item(struct btrfs_root *root, struct extent_buffer *leaf,
struct btrfs_key *key, int slot)
static int check_csum_item(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf, struct btrfs_key *key,
int slot)
{
u32 sectorsize = root->fs_info->sectorsize;
u32 csumsize = btrfs_super_csum_size(root->fs_info->super_copy);
u32 sectorsize = fs_info->sectorsize;
u32 csumsize = btrfs_super_csum_size(fs_info->super_copy);
if (key->objectid != BTRFS_EXTENT_CSUM_OBJECTID) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"invalid key objectid for csum item, have %llu expect %llu",
key->objectid, BTRFS_EXTENT_CSUM_OBJECTID);
return -EUCLEAN;
}
if (!IS_ALIGNED(key->offset, sectorsize)) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"unaligned key offset for csum item, have %llu should be aligned to %u",
key->offset, sectorsize);
return -EUCLEAN;
}
if (!IS_ALIGNED(btrfs_item_size_nr(leaf, slot), csumsize)) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"unaligned item size for csum item, have %u should be aligned to %u",
btrfs_item_size_nr(leaf, slot), csumsize);
return -EUCLEAN;
@ -228,7 +230,7 @@ static int check_csum_item(struct btrfs_root *root, struct extent_buffer *leaf,
* which represents inode number
*/
__printf(4, 5)
static void dir_item_err(const struct btrfs_root *root,
static void dir_item_err(const struct btrfs_fs_info *fs_info,
const struct extent_buffer *eb, int slot,
const char *fmt, ...)
{
@ -242,14 +244,15 @@ static void dir_item_err(const struct btrfs_root *root,
vaf.fmt = fmt;
vaf.va = &args;
btrfs_crit(root->fs_info,
btrfs_crit(fs_info,
"corrupt %s: root=%llu block=%llu slot=%d ino=%llu, %pV",
btrfs_header_level(eb) == 0 ? "leaf" : "node", root->objectid,
btrfs_header_bytenr(eb), slot, key.objectid, &vaf);
btrfs_header_level(eb) == 0 ? "leaf" : "node",
btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot,
key.objectid, &vaf);
va_end(args);
}
static int check_dir_item(struct btrfs_root *root,
static int check_dir_item(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf,
struct btrfs_key *key, int slot)
{
@ -268,7 +271,7 @@ static int check_dir_item(struct btrfs_root *root,
/* header itself should not cross item boundary */
if (cur + sizeof(*di) > item_size) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"dir item header crosses item boundary, have %zu boundary %u",
cur + sizeof(*di), item_size);
return -EUCLEAN;
@ -277,7 +280,7 @@ static int check_dir_item(struct btrfs_root *root,
/* dir type check */
dir_type = btrfs_dir_type(leaf, di);
if (dir_type >= BTRFS_FT_MAX) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"invalid dir item type, have %u expect [0, %u)",
dir_type, BTRFS_FT_MAX);
return -EUCLEAN;
@ -285,14 +288,14 @@ static int check_dir_item(struct btrfs_root *root,
if (key->type == BTRFS_XATTR_ITEM_KEY &&
dir_type != BTRFS_FT_XATTR) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"invalid dir item type for XATTR key, have %u expect %u",
dir_type, BTRFS_FT_XATTR);
return -EUCLEAN;
}
if (dir_type == BTRFS_FT_XATTR &&
key->type != BTRFS_XATTR_ITEM_KEY) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"xattr dir type found for non-XATTR key");
return -EUCLEAN;
}
@ -305,21 +308,21 @@ static int check_dir_item(struct btrfs_root *root,
name_len = btrfs_dir_name_len(leaf, di);
data_len = btrfs_dir_data_len(leaf, di);
if (name_len > max_name_len) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"dir item name len too long, have %u max %u",
name_len, max_name_len);
return -EUCLEAN;
}
if (name_len + data_len > BTRFS_MAX_XATTR_SIZE(root->fs_info)) {
dir_item_err(root, leaf, slot,
if (name_len + data_len > BTRFS_MAX_XATTR_SIZE(fs_info)) {
dir_item_err(fs_info, leaf, slot,
"dir item name and data len too long, have %u max %u",
name_len + data_len,
BTRFS_MAX_XATTR_SIZE(root->fs_info));
BTRFS_MAX_XATTR_SIZE(fs_info));
return -EUCLEAN;
}
if (data_len && dir_type != BTRFS_FT_XATTR) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"dir item with invalid data len, have %u expect 0",
data_len);
return -EUCLEAN;
@ -329,7 +332,7 @@ static int check_dir_item(struct btrfs_root *root,
/* header and name/data should not cross item boundary */
if (cur + total_size > item_size) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"dir item data crosses item boundary, have %u boundary %u",
cur + total_size, item_size);
return -EUCLEAN;
@ -347,7 +350,7 @@ static int check_dir_item(struct btrfs_root *root,
(unsigned long)(di + 1), name_len);
name_hash = btrfs_name_hash(namebuf, name_len);
if (key->offset != name_hash) {
dir_item_err(root, leaf, slot,
dir_item_err(fs_info, leaf, slot,
"name hash mismatch with key, have 0x%016x expect 0x%016llx",
name_hash, key->offset);
return -EUCLEAN;
@ -362,7 +365,7 @@ static int check_dir_item(struct btrfs_root *root,
/*
* Common point to switch the item-specific validation.
*/
static int check_leaf_item(struct btrfs_root *root,
static int check_leaf_item(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf,
struct btrfs_key *key, int slot)
{
@ -370,24 +373,23 @@ static int check_leaf_item(struct btrfs_root *root,
switch (key->type) {
case BTRFS_EXTENT_DATA_KEY:
ret = check_extent_data_item(root, leaf, key, slot);
ret = check_extent_data_item(fs_info, leaf, key, slot);
break;
case BTRFS_EXTENT_CSUM_KEY:
ret = check_csum_item(root, leaf, key, slot);
ret = check_csum_item(fs_info, leaf, key, slot);
break;
case BTRFS_DIR_ITEM_KEY:
case BTRFS_DIR_INDEX_KEY:
case BTRFS_XATTR_ITEM_KEY:
ret = check_dir_item(root, leaf, key, slot);
ret = check_dir_item(fs_info, leaf, key, slot);
break;
}
return ret;
}
static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
static int check_leaf(struct btrfs_fs_info *fs_info, struct extent_buffer *leaf,
bool check_item_data)
{
struct btrfs_fs_info *fs_info = root->fs_info;
/* No valid key type is 0, so all key should be larger than this key */
struct btrfs_key prev_key = {0, 0, 0};
struct btrfs_key key;
@ -420,7 +422,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
eb = btrfs_root_node(check_root);
/* if leaf is the root, then it's fine */
if (leaf != eb) {
generic_err(check_root, leaf, 0,
generic_err(fs_info, leaf, 0,
"invalid nritems, have %u should not be 0 for non-root leaf",
nritems);
free_extent_buffer(eb);
@ -453,7 +455,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
/* Make sure the keys are in the right order */
if (btrfs_comp_cpu_keys(&prev_key, &key) >= 0) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"bad key order, prev (%llu %u %llu) current (%llu %u %llu)",
prev_key.objectid, prev_key.type,
prev_key.offset, key.objectid, key.type,
@ -472,7 +474,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
item_end_expected = btrfs_item_offset_nr(leaf,
slot - 1);
if (btrfs_item_end_nr(leaf, slot) != item_end_expected) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"unexpected item end, have %u expect %u",
btrfs_item_end_nr(leaf, slot),
item_end_expected);
@ -486,7 +488,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
*/
if (btrfs_item_end_nr(leaf, slot) >
BTRFS_LEAF_DATA_SIZE(fs_info)) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"slot end outside of leaf, have %u expect range [0, %u]",
btrfs_item_end_nr(leaf, slot),
BTRFS_LEAF_DATA_SIZE(fs_info));
@ -496,7 +498,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
/* Also check if the item pointer overlaps with btrfs item. */
if (btrfs_item_nr_offset(slot) + sizeof(struct btrfs_item) >
btrfs_item_ptr_offset(leaf, slot)) {
generic_err(root, leaf, slot,
generic_err(fs_info, leaf, slot,
"slot overlaps with its data, item end %lu data start %lu",
btrfs_item_nr_offset(slot) +
sizeof(struct btrfs_item),
@ -509,7 +511,7 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
* Check if the item size and content meet other
* criteria
*/
ret = check_leaf_item(root, leaf, &key, slot);
ret = check_leaf_item(fs_info, leaf, &key, slot);
if (ret < 0)
return ret;
}
@ -522,18 +524,19 @@ static int check_leaf(struct btrfs_root *root, struct extent_buffer *leaf,
return 0;
}
int btrfs_check_leaf_full(struct btrfs_root *root, struct extent_buffer *leaf)
{
return check_leaf(root, leaf, true);
}
int btrfs_check_leaf_relaxed(struct btrfs_root *root,
int btrfs_check_leaf_full(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf)
{
return check_leaf(root, leaf, false);
return check_leaf(fs_info, leaf, true);
}
int btrfs_check_node(struct btrfs_root *root, struct extent_buffer *node)
int btrfs_check_leaf_relaxed(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf)
{
return check_leaf(fs_info, leaf, false);
}
int btrfs_check_node(struct btrfs_fs_info *fs_info, struct extent_buffer *node)
{
unsigned long nr = btrfs_header_nritems(node);
struct btrfs_key key, next_key;
@ -541,12 +544,12 @@ int btrfs_check_node(struct btrfs_root *root, struct extent_buffer *node)
u64 bytenr;
int ret = 0;
if (nr == 0 || nr > BTRFS_NODEPTRS_PER_BLOCK(root->fs_info)) {
btrfs_crit(root->fs_info,
if (nr == 0 || nr > BTRFS_NODEPTRS_PER_BLOCK(fs_info)) {
btrfs_crit(fs_info,
"corrupt node: root=%llu block=%llu, nritems too %s, have %lu expect range [1,%u]",
root->objectid, node->start,
btrfs_header_owner(node), node->start,
nr == 0 ? "small" : "large", nr,
BTRFS_NODEPTRS_PER_BLOCK(root->fs_info));
BTRFS_NODEPTRS_PER_BLOCK(fs_info));
return -EUCLEAN;
}
@ -556,21 +559,21 @@ int btrfs_check_node(struct btrfs_root *root, struct extent_buffer *node)
btrfs_node_key_to_cpu(node, &next_key, slot + 1);
if (!bytenr) {
generic_err(root, node, slot,
generic_err(fs_info, node, slot,
"invalid NULL node pointer");
ret = -EUCLEAN;
goto out;
}
if (!IS_ALIGNED(bytenr, root->fs_info->sectorsize)) {
generic_err(root, node, slot,
if (!IS_ALIGNED(bytenr, fs_info->sectorsize)) {
generic_err(fs_info, node, slot,
"unaligned pointer, have %llu should be aligned to %u",
bytenr, root->fs_info->sectorsize);
bytenr, fs_info->sectorsize);
ret = -EUCLEAN;
goto out;
}
if (btrfs_comp_cpu_keys(&key, &next_key) >= 0) {
generic_err(root, node, slot,
generic_err(fs_info, node, slot,
"bad key order, current (%llu %u %llu) next (%llu %u %llu)",
key.objectid, key.type, key.offset,
next_key.objectid, next_key.type,

7
fs/btrfs/tree-checker.h
View File

@ -25,14 +25,15 @@
* Will check not only the item pointers, but also every possible member
* in item data.
*/
int btrfs_check_leaf_full(struct btrfs_root *root, struct extent_buffer *leaf);
int btrfs_check_leaf_full(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf);
/*
* Less strict leaf checker.
* Will only check item pointers, not reading item data.
*/
int btrfs_check_leaf_relaxed(struct btrfs_root *root,
int btrfs_check_leaf_relaxed(struct btrfs_fs_info *fs_info,
struct extent_buffer *leaf);
int btrfs_check_node(struct btrfs_root *root, struct extent_buffer *node);
int btrfs_check_node(struct btrfs_fs_info *fs_info, struct extent_buffer *node);
#endif