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c1d7c514 | 1 | // SPDX-License-Identifier: GPL-2.0 |
557ea5dd QW |
2 | /* |
3 | * Copyright (C) Qu Wenruo 2017. All rights reserved. | |
557ea5dd QW |
4 | */ |
5 | ||
6 | /* | |
7 | * The module is used to catch unexpected/corrupted tree block data. | |
8 | * Such behavior can be caused either by a fuzzed image or bugs. | |
9 | * | |
10 | * The objective is to do leaf/node validation checks when tree block is read | |
11 | * from disk, and check *every* possible member, so other code won't | |
12 | * need to checking them again. | |
13 | * | |
14 | * Due to the potential and unwanted damage, every checker needs to be | |
15 | * carefully reviewed otherwise so it does not prevent mount of valid images. | |
16 | */ | |
17 | ||
02529d7a QW |
18 | #include <linux/types.h> |
19 | #include <linux/stddef.h> | |
20 | #include <linux/error-injection.h> | |
557ea5dd QW |
21 | #include "ctree.h" |
22 | #include "tree-checker.h" | |
23 | #include "disk-io.h" | |
24 | #include "compression.h" | |
fce466ea | 25 | #include "volumes.h" |
c1499166 | 26 | #include "misc.h" |
557ea5dd | 27 | |
bba4f298 QW |
28 | /* |
29 | * Error message should follow the following format: | |
30 | * corrupt <type>: <identifier>, <reason>[, <bad_value>] | |
31 | * | |
32 | * @type: leaf or node | |
33 | * @identifier: the necessary info to locate the leaf/node. | |
52042d8e | 34 | * It's recommended to decode key.objecitd/offset if it's |
bba4f298 QW |
35 | * meaningful. |
36 | * @reason: describe the error | |
52042d8e | 37 | * @bad_value: optional, it's recommended to output bad value and its |
bba4f298 QW |
38 | * expected value (range). |
39 | * | |
40 | * Since comma is used to separate the components, only space is allowed | |
41 | * inside each component. | |
42 | */ | |
43 | ||
44 | /* | |
45 | * Append generic "corrupt leaf/node root=%llu block=%llu slot=%d: " to @fmt. | |
46 | * Allows callers to customize the output. | |
47 | */ | |
86a6be3a | 48 | __printf(3, 4) |
e67c718b | 49 | __cold |
86a6be3a | 50 | static void generic_err(const struct extent_buffer *eb, int slot, |
bba4f298 QW |
51 | const char *fmt, ...) |
52 | { | |
86a6be3a | 53 | const struct btrfs_fs_info *fs_info = eb->fs_info; |
bba4f298 QW |
54 | struct va_format vaf; |
55 | va_list args; | |
56 | ||
57 | va_start(args, fmt); | |
58 | ||
59 | vaf.fmt = fmt; | |
60 | vaf.va = &args; | |
61 | ||
2f659546 | 62 | btrfs_crit(fs_info, |
bba4f298 QW |
63 | "corrupt %s: root=%llu block=%llu slot=%d, %pV", |
64 | btrfs_header_level(eb) == 0 ? "leaf" : "node", | |
2f659546 | 65 | btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, &vaf); |
bba4f298 QW |
66 | va_end(args); |
67 | } | |
68 | ||
8806d718 QW |
69 | /* |
70 | * Customized reporter for extent data item, since its key objectid and | |
71 | * offset has its own meaning. | |
72 | */ | |
1fd715ff | 73 | __printf(3, 4) |
e67c718b | 74 | __cold |
1fd715ff | 75 | static void file_extent_err(const struct extent_buffer *eb, int slot, |
8806d718 QW |
76 | const char *fmt, ...) |
77 | { | |
1fd715ff | 78 | const struct btrfs_fs_info *fs_info = eb->fs_info; |
8806d718 QW |
79 | struct btrfs_key key; |
80 | struct va_format vaf; | |
81 | va_list args; | |
82 | ||
83 | btrfs_item_key_to_cpu(eb, &key, slot); | |
84 | va_start(args, fmt); | |
85 | ||
86 | vaf.fmt = fmt; | |
87 | vaf.va = &args; | |
88 | ||
2f659546 | 89 | btrfs_crit(fs_info, |
8806d718 | 90 | "corrupt %s: root=%llu block=%llu slot=%d ino=%llu file_offset=%llu, %pV", |
2f659546 QW |
91 | btrfs_header_level(eb) == 0 ? "leaf" : "node", |
92 | btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, | |
93 | key.objectid, key.offset, &vaf); | |
8806d718 QW |
94 | va_end(args); |
95 | } | |
96 | ||
97 | /* | |
98 | * Return 0 if the btrfs_file_extent_##name is aligned to @alignment | |
99 | * Else return 1 | |
100 | */ | |
033774dc | 101 | #define CHECK_FE_ALIGNED(leaf, slot, fi, name, alignment) \ |
8806d718 | 102 | ({ \ |
c7c01a4a DS |
103 | if (unlikely(!IS_ALIGNED(btrfs_file_extent_##name((leaf), (fi)), \ |
104 | (alignment)))) \ | |
1fd715ff | 105 | file_extent_err((leaf), (slot), \ |
8806d718 QW |
106 | "invalid %s for file extent, have %llu, should be aligned to %u", \ |
107 | (#name), btrfs_file_extent_##name((leaf), (fi)), \ | |
108 | (alignment)); \ | |
109 | (!IS_ALIGNED(btrfs_file_extent_##name((leaf), (fi)), (alignment))); \ | |
110 | }) | |
111 | ||
4e9845ef FM |
112 | static u64 file_extent_end(struct extent_buffer *leaf, |
113 | struct btrfs_key *key, | |
114 | struct btrfs_file_extent_item *extent) | |
115 | { | |
116 | u64 end; | |
117 | u64 len; | |
118 | ||
119 | if (btrfs_file_extent_type(leaf, extent) == BTRFS_FILE_EXTENT_INLINE) { | |
120 | len = btrfs_file_extent_ram_bytes(leaf, extent); | |
121 | end = ALIGN(key->offset + len, leaf->fs_info->sectorsize); | |
122 | } else { | |
123 | len = btrfs_file_extent_num_bytes(leaf, extent); | |
124 | end = key->offset + len; | |
125 | } | |
126 | return end; | |
127 | } | |
128 | ||
80d7fd1e QW |
129 | /* |
130 | * Customized report for dir_item, the only new important information is | |
131 | * key->objectid, which represents inode number | |
132 | */ | |
133 | __printf(3, 4) | |
134 | __cold | |
135 | static void dir_item_err(const struct extent_buffer *eb, int slot, | |
136 | const char *fmt, ...) | |
137 | { | |
138 | const struct btrfs_fs_info *fs_info = eb->fs_info; | |
139 | struct btrfs_key key; | |
140 | struct va_format vaf; | |
141 | va_list args; | |
142 | ||
143 | btrfs_item_key_to_cpu(eb, &key, slot); | |
144 | va_start(args, fmt); | |
145 | ||
146 | vaf.fmt = fmt; | |
147 | vaf.va = &args; | |
148 | ||
149 | btrfs_crit(fs_info, | |
150 | "corrupt %s: root=%llu block=%llu slot=%d ino=%llu, %pV", | |
151 | btrfs_header_level(eb) == 0 ? "leaf" : "node", | |
152 | btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, | |
153 | key.objectid, &vaf); | |
154 | va_end(args); | |
155 | } | |
156 | ||
157 | /* | |
158 | * This functions checks prev_key->objectid, to ensure current key and prev_key | |
159 | * share the same objectid as inode number. | |
160 | * | |
161 | * This is to detect missing INODE_ITEM in subvolume trees. | |
162 | * | |
163 | * Return true if everything is OK or we don't need to check. | |
164 | * Return false if anything is wrong. | |
165 | */ | |
166 | static bool check_prev_ino(struct extent_buffer *leaf, | |
167 | struct btrfs_key *key, int slot, | |
168 | struct btrfs_key *prev_key) | |
169 | { | |
170 | /* No prev key, skip check */ | |
171 | if (slot == 0) | |
172 | return true; | |
173 | ||
174 | /* Only these key->types needs to be checked */ | |
175 | ASSERT(key->type == BTRFS_XATTR_ITEM_KEY || | |
176 | key->type == BTRFS_INODE_REF_KEY || | |
177 | key->type == BTRFS_DIR_INDEX_KEY || | |
178 | key->type == BTRFS_DIR_ITEM_KEY || | |
179 | key->type == BTRFS_EXTENT_DATA_KEY); | |
180 | ||
181 | /* | |
182 | * Only subvolume trees along with their reloc trees need this check. | |
183 | * Things like log tree doesn't follow this ino requirement. | |
184 | */ | |
185 | if (!is_fstree(btrfs_header_owner(leaf))) | |
186 | return true; | |
187 | ||
188 | if (key->objectid == prev_key->objectid) | |
189 | return true; | |
190 | ||
191 | /* Error found */ | |
192 | dir_item_err(leaf, slot, | |
193 | "invalid previous key objectid, have %llu expect %llu", | |
194 | prev_key->objectid, key->objectid); | |
195 | return false; | |
196 | } | |
ae2a19d8 | 197 | static int check_extent_data_item(struct extent_buffer *leaf, |
4e9845ef FM |
198 | struct btrfs_key *key, int slot, |
199 | struct btrfs_key *prev_key) | |
557ea5dd | 200 | { |
ae2a19d8 | 201 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
557ea5dd | 202 | struct btrfs_file_extent_item *fi; |
2f659546 | 203 | u32 sectorsize = fs_info->sectorsize; |
557ea5dd | 204 | u32 item_size = btrfs_item_size_nr(leaf, slot); |
4c094c33 | 205 | u64 extent_end; |
557ea5dd | 206 | |
c7c01a4a | 207 | if (unlikely(!IS_ALIGNED(key->offset, sectorsize))) { |
1fd715ff | 208 | file_extent_err(leaf, slot, |
8806d718 QW |
209 | "unaligned file_offset for file extent, have %llu should be aligned to %u", |
210 | key->offset, sectorsize); | |
557ea5dd QW |
211 | return -EUCLEAN; |
212 | } | |
213 | ||
c18679eb QW |
214 | /* |
215 | * Previous key must have the same key->objectid (ino). | |
216 | * It can be XATTR_ITEM, INODE_ITEM or just another EXTENT_DATA. | |
217 | * But if objectids mismatch, it means we have a missing | |
218 | * INODE_ITEM. | |
219 | */ | |
c7c01a4a | 220 | if (unlikely(!check_prev_ino(leaf, key, slot, prev_key))) |
c18679eb | 221 | return -EUCLEAN; |
c18679eb | 222 | |
557ea5dd QW |
223 | fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item); |
224 | ||
153a6d29 QW |
225 | /* |
226 | * Make sure the item contains at least inline header, so the file | |
227 | * extent type is not some garbage. | |
228 | */ | |
c7c01a4a | 229 | if (unlikely(item_size < BTRFS_FILE_EXTENT_INLINE_DATA_START)) { |
153a6d29 | 230 | file_extent_err(leaf, slot, |
994bf9cd | 231 | "invalid item size, have %u expect [%zu, %u)", |
153a6d29 QW |
232 | item_size, BTRFS_FILE_EXTENT_INLINE_DATA_START, |
233 | SZ_4K); | |
234 | return -EUCLEAN; | |
235 | } | |
c7c01a4a DS |
236 | if (unlikely(btrfs_file_extent_type(leaf, fi) >= |
237 | BTRFS_NR_FILE_EXTENT_TYPES)) { | |
1fd715ff | 238 | file_extent_err(leaf, slot, |
8806d718 QW |
239 | "invalid type for file extent, have %u expect range [0, %u]", |
240 | btrfs_file_extent_type(leaf, fi), | |
b9b1a53e | 241 | BTRFS_NR_FILE_EXTENT_TYPES - 1); |
557ea5dd QW |
242 | return -EUCLEAN; |
243 | } | |
244 | ||
245 | /* | |
52042d8e | 246 | * Support for new compression/encryption must introduce incompat flag, |
557ea5dd QW |
247 | * and must be caught in open_ctree(). |
248 | */ | |
c7c01a4a DS |
249 | if (unlikely(btrfs_file_extent_compression(leaf, fi) >= |
250 | BTRFS_NR_COMPRESS_TYPES)) { | |
1fd715ff | 251 | file_extent_err(leaf, slot, |
8806d718 QW |
252 | "invalid compression for file extent, have %u expect range [0, %u]", |
253 | btrfs_file_extent_compression(leaf, fi), | |
ce96b7ff | 254 | BTRFS_NR_COMPRESS_TYPES - 1); |
557ea5dd QW |
255 | return -EUCLEAN; |
256 | } | |
c7c01a4a | 257 | if (unlikely(btrfs_file_extent_encryption(leaf, fi))) { |
1fd715ff | 258 | file_extent_err(leaf, slot, |
8806d718 QW |
259 | "invalid encryption for file extent, have %u expect 0", |
260 | btrfs_file_extent_encryption(leaf, fi)); | |
557ea5dd QW |
261 | return -EUCLEAN; |
262 | } | |
263 | if (btrfs_file_extent_type(leaf, fi) == BTRFS_FILE_EXTENT_INLINE) { | |
264 | /* Inline extent must have 0 as key offset */ | |
c7c01a4a | 265 | if (unlikely(key->offset)) { |
1fd715ff | 266 | file_extent_err(leaf, slot, |
8806d718 QW |
267 | "invalid file_offset for inline file extent, have %llu expect 0", |
268 | key->offset); | |
557ea5dd QW |
269 | return -EUCLEAN; |
270 | } | |
271 | ||
272 | /* Compressed inline extent has no on-disk size, skip it */ | |
273 | if (btrfs_file_extent_compression(leaf, fi) != | |
274 | BTRFS_COMPRESS_NONE) | |
275 | return 0; | |
276 | ||
277 | /* Uncompressed inline extent size must match item size */ | |
c7c01a4a DS |
278 | if (unlikely(item_size != BTRFS_FILE_EXTENT_INLINE_DATA_START + |
279 | btrfs_file_extent_ram_bytes(leaf, fi))) { | |
1fd715ff | 280 | file_extent_err(leaf, slot, |
8806d718 QW |
281 | "invalid ram_bytes for uncompressed inline extent, have %u expect %llu", |
282 | item_size, BTRFS_FILE_EXTENT_INLINE_DATA_START + | |
283 | btrfs_file_extent_ram_bytes(leaf, fi)); | |
557ea5dd QW |
284 | return -EUCLEAN; |
285 | } | |
286 | return 0; | |
287 | } | |
288 | ||
289 | /* Regular or preallocated extent has fixed item size */ | |
c7c01a4a | 290 | if (unlikely(item_size != sizeof(*fi))) { |
1fd715ff | 291 | file_extent_err(leaf, slot, |
709a95c3 | 292 | "invalid item size for reg/prealloc file extent, have %u expect %zu", |
8806d718 | 293 | item_size, sizeof(*fi)); |
557ea5dd QW |
294 | return -EUCLEAN; |
295 | } | |
c7c01a4a DS |
296 | if (unlikely(CHECK_FE_ALIGNED(leaf, slot, fi, ram_bytes, sectorsize) || |
297 | CHECK_FE_ALIGNED(leaf, slot, fi, disk_bytenr, sectorsize) || | |
298 | CHECK_FE_ALIGNED(leaf, slot, fi, disk_num_bytes, sectorsize) || | |
299 | CHECK_FE_ALIGNED(leaf, slot, fi, offset, sectorsize) || | |
300 | CHECK_FE_ALIGNED(leaf, slot, fi, num_bytes, sectorsize))) | |
557ea5dd | 301 | return -EUCLEAN; |
4e9845ef | 302 | |
4c094c33 | 303 | /* Catch extent end overflow */ |
c7c01a4a DS |
304 | if (unlikely(check_add_overflow(btrfs_file_extent_num_bytes(leaf, fi), |
305 | key->offset, &extent_end))) { | |
4c094c33 QW |
306 | file_extent_err(leaf, slot, |
307 | "extent end overflow, have file offset %llu extent num bytes %llu", | |
308 | key->offset, | |
309 | btrfs_file_extent_num_bytes(leaf, fi)); | |
310 | return -EUCLEAN; | |
311 | } | |
312 | ||
4e9845ef FM |
313 | /* |
314 | * Check that no two consecutive file extent items, in the same leaf, | |
315 | * present ranges that overlap each other. | |
316 | */ | |
317 | if (slot > 0 && | |
318 | prev_key->objectid == key->objectid && | |
319 | prev_key->type == BTRFS_EXTENT_DATA_KEY) { | |
320 | struct btrfs_file_extent_item *prev_fi; | |
321 | u64 prev_end; | |
322 | ||
323 | prev_fi = btrfs_item_ptr(leaf, slot - 1, | |
324 | struct btrfs_file_extent_item); | |
325 | prev_end = file_extent_end(leaf, prev_key, prev_fi); | |
c7c01a4a | 326 | if (unlikely(prev_end > key->offset)) { |
4e9845ef FM |
327 | file_extent_err(leaf, slot - 1, |
328 | "file extent end range (%llu) goes beyond start offset (%llu) of the next file extent", | |
329 | prev_end, key->offset); | |
330 | return -EUCLEAN; | |
331 | } | |
332 | } | |
333 | ||
557ea5dd QW |
334 | return 0; |
335 | } | |
336 | ||
68128ce7 | 337 | static int check_csum_item(struct extent_buffer *leaf, struct btrfs_key *key, |
ad1d8c43 | 338 | int slot, struct btrfs_key *prev_key) |
557ea5dd | 339 | { |
68128ce7 | 340 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
2f659546 | 341 | u32 sectorsize = fs_info->sectorsize; |
223486c2 | 342 | const u32 csumsize = fs_info->csum_size; |
557ea5dd | 343 | |
c7c01a4a | 344 | if (unlikely(key->objectid != BTRFS_EXTENT_CSUM_OBJECTID)) { |
86a6be3a | 345 | generic_err(leaf, slot, |
d508c5f0 QW |
346 | "invalid key objectid for csum item, have %llu expect %llu", |
347 | key->objectid, BTRFS_EXTENT_CSUM_OBJECTID); | |
557ea5dd QW |
348 | return -EUCLEAN; |
349 | } | |
c7c01a4a | 350 | if (unlikely(!IS_ALIGNED(key->offset, sectorsize))) { |
86a6be3a | 351 | generic_err(leaf, slot, |
d508c5f0 QW |
352 | "unaligned key offset for csum item, have %llu should be aligned to %u", |
353 | key->offset, sectorsize); | |
557ea5dd QW |
354 | return -EUCLEAN; |
355 | } | |
c7c01a4a | 356 | if (unlikely(!IS_ALIGNED(btrfs_item_size_nr(leaf, slot), csumsize))) { |
86a6be3a | 357 | generic_err(leaf, slot, |
d508c5f0 QW |
358 | "unaligned item size for csum item, have %u should be aligned to %u", |
359 | btrfs_item_size_nr(leaf, slot), csumsize); | |
557ea5dd QW |
360 | return -EUCLEAN; |
361 | } | |
ad1d8c43 FM |
362 | if (slot > 0 && prev_key->type == BTRFS_EXTENT_CSUM_KEY) { |
363 | u64 prev_csum_end; | |
364 | u32 prev_item_size; | |
365 | ||
366 | prev_item_size = btrfs_item_size_nr(leaf, slot - 1); | |
367 | prev_csum_end = (prev_item_size / csumsize) * sectorsize; | |
368 | prev_csum_end += prev_key->offset; | |
c7c01a4a | 369 | if (unlikely(prev_csum_end > key->offset)) { |
ad1d8c43 FM |
370 | generic_err(leaf, slot - 1, |
371 | "csum end range (%llu) goes beyond the start range (%llu) of the next csum item", | |
372 | prev_csum_end, key->offset); | |
373 | return -EUCLEAN; | |
374 | } | |
375 | } | |
557ea5dd QW |
376 | return 0; |
377 | } | |
378 | ||
c23c77b0 QW |
379 | /* Inode item error output has the same format as dir_item_err() */ |
380 | #define inode_item_err(eb, slot, fmt, ...) \ | |
381 | dir_item_err(eb, slot, fmt, __VA_ARGS__) | |
382 | ||
383 | static int check_inode_key(struct extent_buffer *leaf, struct btrfs_key *key, | |
384 | int slot) | |
385 | { | |
386 | struct btrfs_key item_key; | |
387 | bool is_inode_item; | |
388 | ||
389 | btrfs_item_key_to_cpu(leaf, &item_key, slot); | |
390 | is_inode_item = (item_key.type == BTRFS_INODE_ITEM_KEY); | |
391 | ||
392 | /* For XATTR_ITEM, location key should be all 0 */ | |
393 | if (item_key.type == BTRFS_XATTR_ITEM_KEY) { | |
c7c01a4a DS |
394 | if (unlikely(key->objectid != 0 || key->type != 0 || |
395 | key->offset != 0)) | |
c23c77b0 QW |
396 | return -EUCLEAN; |
397 | return 0; | |
398 | } | |
399 | ||
c7c01a4a DS |
400 | if (unlikely((key->objectid < BTRFS_FIRST_FREE_OBJECTID || |
401 | key->objectid > BTRFS_LAST_FREE_OBJECTID) && | |
402 | key->objectid != BTRFS_ROOT_TREE_DIR_OBJECTID && | |
403 | key->objectid != BTRFS_FREE_INO_OBJECTID)) { | |
c23c77b0 QW |
404 | if (is_inode_item) { |
405 | generic_err(leaf, slot, | |
406 | "invalid key objectid: has %llu expect %llu or [%llu, %llu] or %llu", | |
407 | key->objectid, BTRFS_ROOT_TREE_DIR_OBJECTID, | |
408 | BTRFS_FIRST_FREE_OBJECTID, | |
409 | BTRFS_LAST_FREE_OBJECTID, | |
410 | BTRFS_FREE_INO_OBJECTID); | |
411 | } else { | |
412 | dir_item_err(leaf, slot, | |
413 | "invalid location key objectid: has %llu expect %llu or [%llu, %llu] or %llu", | |
414 | key->objectid, BTRFS_ROOT_TREE_DIR_OBJECTID, | |
415 | BTRFS_FIRST_FREE_OBJECTID, | |
416 | BTRFS_LAST_FREE_OBJECTID, | |
417 | BTRFS_FREE_INO_OBJECTID); | |
418 | } | |
419 | return -EUCLEAN; | |
420 | } | |
c7c01a4a | 421 | if (unlikely(key->offset != 0)) { |
c23c77b0 QW |
422 | if (is_inode_item) |
423 | inode_item_err(leaf, slot, | |
424 | "invalid key offset: has %llu expect 0", | |
425 | key->offset); | |
426 | else | |
427 | dir_item_err(leaf, slot, | |
428 | "invalid location key offset:has %llu expect 0", | |
429 | key->offset); | |
430 | return -EUCLEAN; | |
431 | } | |
432 | return 0; | |
433 | } | |
434 | ||
57a0e674 QW |
435 | static int check_root_key(struct extent_buffer *leaf, struct btrfs_key *key, |
436 | int slot) | |
437 | { | |
438 | struct btrfs_key item_key; | |
439 | bool is_root_item; | |
440 | ||
441 | btrfs_item_key_to_cpu(leaf, &item_key, slot); | |
442 | is_root_item = (item_key.type == BTRFS_ROOT_ITEM_KEY); | |
443 | ||
444 | /* No such tree id */ | |
c7c01a4a | 445 | if (unlikely(key->objectid == 0)) { |
57a0e674 QW |
446 | if (is_root_item) |
447 | generic_err(leaf, slot, "invalid root id 0"); | |
448 | else | |
449 | dir_item_err(leaf, slot, | |
450 | "invalid location key root id 0"); | |
451 | return -EUCLEAN; | |
452 | } | |
453 | ||
454 | /* DIR_ITEM/INDEX/INODE_REF is not allowed to point to non-fs trees */ | |
c7c01a4a | 455 | if (unlikely(!is_fstree(key->objectid) && !is_root_item)) { |
57a0e674 QW |
456 | dir_item_err(leaf, slot, |
457 | "invalid location key objectid, have %llu expect [%llu, %llu]", | |
458 | key->objectid, BTRFS_FIRST_FREE_OBJECTID, | |
459 | BTRFS_LAST_FREE_OBJECTID); | |
460 | return -EUCLEAN; | |
461 | } | |
462 | ||
463 | /* | |
464 | * ROOT_ITEM with non-zero offset means this is a snapshot, created at | |
465 | * @offset transid. | |
466 | * Furthermore, for location key in DIR_ITEM, its offset is always -1. | |
467 | * | |
468 | * So here we only check offset for reloc tree whose key->offset must | |
469 | * be a valid tree. | |
470 | */ | |
c7c01a4a DS |
471 | if (unlikely(key->objectid == BTRFS_TREE_RELOC_OBJECTID && |
472 | key->offset == 0)) { | |
57a0e674 QW |
473 | generic_err(leaf, slot, "invalid root id 0 for reloc tree"); |
474 | return -EUCLEAN; | |
475 | } | |
476 | return 0; | |
477 | } | |
478 | ||
ce4252c0 | 479 | static int check_dir_item(struct extent_buffer *leaf, |
c18679eb QW |
480 | struct btrfs_key *key, struct btrfs_key *prev_key, |
481 | int slot) | |
ad7b0368 | 482 | { |
ce4252c0 | 483 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
ad7b0368 QW |
484 | struct btrfs_dir_item *di; |
485 | u32 item_size = btrfs_item_size_nr(leaf, slot); | |
486 | u32 cur = 0; | |
487 | ||
c7c01a4a | 488 | if (unlikely(!check_prev_ino(leaf, key, slot, prev_key))) |
c18679eb | 489 | return -EUCLEAN; |
c7c01a4a | 490 | |
ad7b0368 QW |
491 | di = btrfs_item_ptr(leaf, slot, struct btrfs_dir_item); |
492 | while (cur < item_size) { | |
147a097c | 493 | struct btrfs_key location_key; |
ad7b0368 QW |
494 | u32 name_len; |
495 | u32 data_len; | |
496 | u32 max_name_len; | |
497 | u32 total_size; | |
498 | u32 name_hash; | |
499 | u8 dir_type; | |
147a097c | 500 | int ret; |
ad7b0368 QW |
501 | |
502 | /* header itself should not cross item boundary */ | |
c7c01a4a | 503 | if (unlikely(cur + sizeof(*di) > item_size)) { |
d98ced68 | 504 | dir_item_err(leaf, slot, |
7cfad652 | 505 | "dir item header crosses item boundary, have %zu boundary %u", |
ad7b0368 QW |
506 | cur + sizeof(*di), item_size); |
507 | return -EUCLEAN; | |
508 | } | |
509 | ||
147a097c QW |
510 | /* Location key check */ |
511 | btrfs_dir_item_key_to_cpu(leaf, di, &location_key); | |
512 | if (location_key.type == BTRFS_ROOT_ITEM_KEY) { | |
513 | ret = check_root_key(leaf, &location_key, slot); | |
c7c01a4a | 514 | if (unlikely(ret < 0)) |
147a097c QW |
515 | return ret; |
516 | } else if (location_key.type == BTRFS_INODE_ITEM_KEY || | |
517 | location_key.type == 0) { | |
518 | ret = check_inode_key(leaf, &location_key, slot); | |
c7c01a4a | 519 | if (unlikely(ret < 0)) |
147a097c QW |
520 | return ret; |
521 | } else { | |
522 | dir_item_err(leaf, slot, | |
523 | "invalid location key type, have %u, expect %u or %u", | |
524 | location_key.type, BTRFS_ROOT_ITEM_KEY, | |
525 | BTRFS_INODE_ITEM_KEY); | |
526 | return -EUCLEAN; | |
527 | } | |
528 | ||
ad7b0368 QW |
529 | /* dir type check */ |
530 | dir_type = btrfs_dir_type(leaf, di); | |
c7c01a4a | 531 | if (unlikely(dir_type >= BTRFS_FT_MAX)) { |
d98ced68 | 532 | dir_item_err(leaf, slot, |
ad7b0368 QW |
533 | "invalid dir item type, have %u expect [0, %u)", |
534 | dir_type, BTRFS_FT_MAX); | |
535 | return -EUCLEAN; | |
536 | } | |
537 | ||
c7c01a4a DS |
538 | if (unlikely(key->type == BTRFS_XATTR_ITEM_KEY && |
539 | dir_type != BTRFS_FT_XATTR)) { | |
d98ced68 | 540 | dir_item_err(leaf, slot, |
ad7b0368 QW |
541 | "invalid dir item type for XATTR key, have %u expect %u", |
542 | dir_type, BTRFS_FT_XATTR); | |
543 | return -EUCLEAN; | |
544 | } | |
c7c01a4a DS |
545 | if (unlikely(dir_type == BTRFS_FT_XATTR && |
546 | key->type != BTRFS_XATTR_ITEM_KEY)) { | |
d98ced68 | 547 | dir_item_err(leaf, slot, |
ad7b0368 QW |
548 | "xattr dir type found for non-XATTR key"); |
549 | return -EUCLEAN; | |
550 | } | |
551 | if (dir_type == BTRFS_FT_XATTR) | |
552 | max_name_len = XATTR_NAME_MAX; | |
553 | else | |
554 | max_name_len = BTRFS_NAME_LEN; | |
555 | ||
556 | /* Name/data length check */ | |
557 | name_len = btrfs_dir_name_len(leaf, di); | |
558 | data_len = btrfs_dir_data_len(leaf, di); | |
c7c01a4a | 559 | if (unlikely(name_len > max_name_len)) { |
d98ced68 | 560 | dir_item_err(leaf, slot, |
ad7b0368 QW |
561 | "dir item name len too long, have %u max %u", |
562 | name_len, max_name_len); | |
563 | return -EUCLEAN; | |
564 | } | |
c7c01a4a | 565 | if (unlikely(name_len + data_len > BTRFS_MAX_XATTR_SIZE(fs_info))) { |
d98ced68 | 566 | dir_item_err(leaf, slot, |
ad7b0368 QW |
567 | "dir item name and data len too long, have %u max %u", |
568 | name_len + data_len, | |
2f659546 | 569 | BTRFS_MAX_XATTR_SIZE(fs_info)); |
ad7b0368 QW |
570 | return -EUCLEAN; |
571 | } | |
572 | ||
c7c01a4a | 573 | if (unlikely(data_len && dir_type != BTRFS_FT_XATTR)) { |
d98ced68 | 574 | dir_item_err(leaf, slot, |
ad7b0368 QW |
575 | "dir item with invalid data len, have %u expect 0", |
576 | data_len); | |
577 | return -EUCLEAN; | |
578 | } | |
579 | ||
580 | total_size = sizeof(*di) + name_len + data_len; | |
581 | ||
582 | /* header and name/data should not cross item boundary */ | |
c7c01a4a | 583 | if (unlikely(cur + total_size > item_size)) { |
d98ced68 | 584 | dir_item_err(leaf, slot, |
ad7b0368 QW |
585 | "dir item data crosses item boundary, have %u boundary %u", |
586 | cur + total_size, item_size); | |
587 | return -EUCLEAN; | |
588 | } | |
589 | ||
590 | /* | |
591 | * Special check for XATTR/DIR_ITEM, as key->offset is name | |
592 | * hash, should match its name | |
593 | */ | |
594 | if (key->type == BTRFS_DIR_ITEM_KEY || | |
595 | key->type == BTRFS_XATTR_ITEM_KEY) { | |
e2683fc9 DS |
596 | char namebuf[max(BTRFS_NAME_LEN, XATTR_NAME_MAX)]; |
597 | ||
ad7b0368 QW |
598 | read_extent_buffer(leaf, namebuf, |
599 | (unsigned long)(di + 1), name_len); | |
600 | name_hash = btrfs_name_hash(namebuf, name_len); | |
c7c01a4a | 601 | if (unlikely(key->offset != name_hash)) { |
d98ced68 | 602 | dir_item_err(leaf, slot, |
ad7b0368 QW |
603 | "name hash mismatch with key, have 0x%016x expect 0x%016llx", |
604 | name_hash, key->offset); | |
605 | return -EUCLEAN; | |
606 | } | |
607 | } | |
608 | cur += total_size; | |
609 | di = (struct btrfs_dir_item *)((void *)di + total_size); | |
610 | } | |
611 | return 0; | |
612 | } | |
613 | ||
4806bd88 | 614 | __printf(3, 4) |
fce466ea | 615 | __cold |
4806bd88 | 616 | static void block_group_err(const struct extent_buffer *eb, int slot, |
fce466ea QW |
617 | const char *fmt, ...) |
618 | { | |
4806bd88 | 619 | const struct btrfs_fs_info *fs_info = eb->fs_info; |
fce466ea QW |
620 | struct btrfs_key key; |
621 | struct va_format vaf; | |
622 | va_list args; | |
623 | ||
624 | btrfs_item_key_to_cpu(eb, &key, slot); | |
625 | va_start(args, fmt); | |
626 | ||
627 | vaf.fmt = fmt; | |
628 | vaf.va = &args; | |
629 | ||
630 | btrfs_crit(fs_info, | |
631 | "corrupt %s: root=%llu block=%llu slot=%d bg_start=%llu bg_len=%llu, %pV", | |
632 | btrfs_header_level(eb) == 0 ? "leaf" : "node", | |
633 | btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, | |
634 | key.objectid, key.offset, &vaf); | |
635 | va_end(args); | |
636 | } | |
637 | ||
af60ce2b | 638 | static int check_block_group_item(struct extent_buffer *leaf, |
fce466ea QW |
639 | struct btrfs_key *key, int slot) |
640 | { | |
641 | struct btrfs_block_group_item bgi; | |
642 | u32 item_size = btrfs_item_size_nr(leaf, slot); | |
643 | u64 flags; | |
644 | u64 type; | |
645 | ||
646 | /* | |
647 | * Here we don't really care about alignment since extent allocator can | |
10950929 | 648 | * handle it. We care more about the size. |
fce466ea | 649 | */ |
c7c01a4a | 650 | if (unlikely(key->offset == 0)) { |
4806bd88 | 651 | block_group_err(leaf, slot, |
10950929 | 652 | "invalid block group size 0"); |
fce466ea QW |
653 | return -EUCLEAN; |
654 | } | |
655 | ||
c7c01a4a | 656 | if (unlikely(item_size != sizeof(bgi))) { |
4806bd88 | 657 | block_group_err(leaf, slot, |
fce466ea QW |
658 | "invalid item size, have %u expect %zu", |
659 | item_size, sizeof(bgi)); | |
660 | return -EUCLEAN; | |
661 | } | |
662 | ||
663 | read_extent_buffer(leaf, &bgi, btrfs_item_ptr_offset(leaf, slot), | |
664 | sizeof(bgi)); | |
c7c01a4a DS |
665 | if (unlikely(btrfs_stack_block_group_chunk_objectid(&bgi) != |
666 | BTRFS_FIRST_CHUNK_TREE_OBJECTID)) { | |
4806bd88 | 667 | block_group_err(leaf, slot, |
fce466ea | 668 | "invalid block group chunk objectid, have %llu expect %llu", |
de0dc456 | 669 | btrfs_stack_block_group_chunk_objectid(&bgi), |
fce466ea QW |
670 | BTRFS_FIRST_CHUNK_TREE_OBJECTID); |
671 | return -EUCLEAN; | |
672 | } | |
673 | ||
c7c01a4a | 674 | if (unlikely(btrfs_stack_block_group_used(&bgi) > key->offset)) { |
4806bd88 | 675 | block_group_err(leaf, slot, |
fce466ea | 676 | "invalid block group used, have %llu expect [0, %llu)", |
de0dc456 | 677 | btrfs_stack_block_group_used(&bgi), key->offset); |
fce466ea QW |
678 | return -EUCLEAN; |
679 | } | |
680 | ||
de0dc456 | 681 | flags = btrfs_stack_block_group_flags(&bgi); |
c7c01a4a | 682 | if (unlikely(hweight64(flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) > 1)) { |
4806bd88 | 683 | block_group_err(leaf, slot, |
fce466ea QW |
684 | "invalid profile flags, have 0x%llx (%lu bits set) expect no more than 1 bit set", |
685 | flags & BTRFS_BLOCK_GROUP_PROFILE_MASK, | |
686 | hweight64(flags & BTRFS_BLOCK_GROUP_PROFILE_MASK)); | |
687 | return -EUCLEAN; | |
688 | } | |
689 | ||
690 | type = flags & BTRFS_BLOCK_GROUP_TYPE_MASK; | |
c7c01a4a DS |
691 | if (unlikely(type != BTRFS_BLOCK_GROUP_DATA && |
692 | type != BTRFS_BLOCK_GROUP_METADATA && | |
693 | type != BTRFS_BLOCK_GROUP_SYSTEM && | |
694 | type != (BTRFS_BLOCK_GROUP_METADATA | | |
695 | BTRFS_BLOCK_GROUP_DATA))) { | |
4806bd88 | 696 | block_group_err(leaf, slot, |
761333f2 | 697 | "invalid type, have 0x%llx (%lu bits set) expect either 0x%llx, 0x%llx, 0x%llx or 0x%llx", |
fce466ea QW |
698 | type, hweight64(type), |
699 | BTRFS_BLOCK_GROUP_DATA, BTRFS_BLOCK_GROUP_METADATA, | |
700 | BTRFS_BLOCK_GROUP_SYSTEM, | |
701 | BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA); | |
702 | return -EUCLEAN; | |
703 | } | |
704 | return 0; | |
82fc28fb QW |
705 | } |
706 | ||
d001e4a3 | 707 | __printf(4, 5) |
f1140243 | 708 | __cold |
d001e4a3 | 709 | static void chunk_err(const struct extent_buffer *leaf, |
f1140243 QW |
710 | const struct btrfs_chunk *chunk, u64 logical, |
711 | const char *fmt, ...) | |
712 | { | |
d001e4a3 | 713 | const struct btrfs_fs_info *fs_info = leaf->fs_info; |
f1140243 QW |
714 | bool is_sb; |
715 | struct va_format vaf; | |
716 | va_list args; | |
717 | int i; | |
718 | int slot = -1; | |
719 | ||
720 | /* Only superblock eb is able to have such small offset */ | |
721 | is_sb = (leaf->start == BTRFS_SUPER_INFO_OFFSET); | |
722 | ||
723 | if (!is_sb) { | |
724 | /* | |
725 | * Get the slot number by iterating through all slots, this | |
726 | * would provide better readability. | |
727 | */ | |
728 | for (i = 0; i < btrfs_header_nritems(leaf); i++) { | |
729 | if (btrfs_item_ptr_offset(leaf, i) == | |
730 | (unsigned long)chunk) { | |
731 | slot = i; | |
732 | break; | |
733 | } | |
734 | } | |
735 | } | |
736 | va_start(args, fmt); | |
737 | vaf.fmt = fmt; | |
738 | vaf.va = &args; | |
739 | ||
740 | if (is_sb) | |
741 | btrfs_crit(fs_info, | |
742 | "corrupt superblock syschunk array: chunk_start=%llu, %pV", | |
743 | logical, &vaf); | |
744 | else | |
745 | btrfs_crit(fs_info, | |
746 | "corrupt leaf: root=%llu block=%llu slot=%d chunk_start=%llu, %pV", | |
747 | BTRFS_CHUNK_TREE_OBJECTID, leaf->start, slot, | |
748 | logical, &vaf); | |
749 | va_end(args); | |
750 | } | |
751 | ||
82fc28fb QW |
752 | /* |
753 | * The common chunk check which could also work on super block sys chunk array. | |
754 | * | |
bf871c3b | 755 | * Return -EUCLEAN if anything is corrupted. |
82fc28fb QW |
756 | * Return 0 if everything is OK. |
757 | */ | |
ddaf1d5a | 758 | int btrfs_check_chunk_valid(struct extent_buffer *leaf, |
82fc28fb QW |
759 | struct btrfs_chunk *chunk, u64 logical) |
760 | { | |
ddaf1d5a | 761 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
82fc28fb QW |
762 | u64 length; |
763 | u64 stripe_len; | |
764 | u16 num_stripes; | |
765 | u16 sub_stripes; | |
766 | u64 type; | |
767 | u64 features; | |
768 | bool mixed = false; | |
85d07fbe DX |
769 | int raid_index; |
770 | int nparity; | |
771 | int ncopies; | |
82fc28fb QW |
772 | |
773 | length = btrfs_chunk_length(leaf, chunk); | |
774 | stripe_len = btrfs_chunk_stripe_len(leaf, chunk); | |
775 | num_stripes = btrfs_chunk_num_stripes(leaf, chunk); | |
776 | sub_stripes = btrfs_chunk_sub_stripes(leaf, chunk); | |
777 | type = btrfs_chunk_type(leaf, chunk); | |
85d07fbe DX |
778 | raid_index = btrfs_bg_flags_to_raid_index(type); |
779 | ncopies = btrfs_raid_array[raid_index].ncopies; | |
780 | nparity = btrfs_raid_array[raid_index].nparity; | |
82fc28fb | 781 | |
c7c01a4a | 782 | if (unlikely(!num_stripes)) { |
d001e4a3 | 783 | chunk_err(leaf, chunk, logical, |
f1140243 | 784 | "invalid chunk num_stripes, have %u", num_stripes); |
bf871c3b | 785 | return -EUCLEAN; |
82fc28fb | 786 | } |
c7c01a4a | 787 | if (unlikely(num_stripes < ncopies)) { |
85d07fbe DX |
788 | chunk_err(leaf, chunk, logical, |
789 | "invalid chunk num_stripes < ncopies, have %u < %d", | |
790 | num_stripes, ncopies); | |
791 | return -EUCLEAN; | |
792 | } | |
c7c01a4a | 793 | if (unlikely(nparity && num_stripes == nparity)) { |
85d07fbe DX |
794 | chunk_err(leaf, chunk, logical, |
795 | "invalid chunk num_stripes == nparity, have %u == %d", | |
796 | num_stripes, nparity); | |
797 | return -EUCLEAN; | |
798 | } | |
c7c01a4a | 799 | if (unlikely(!IS_ALIGNED(logical, fs_info->sectorsize))) { |
d001e4a3 | 800 | chunk_err(leaf, chunk, logical, |
f1140243 QW |
801 | "invalid chunk logical, have %llu should aligned to %u", |
802 | logical, fs_info->sectorsize); | |
bf871c3b | 803 | return -EUCLEAN; |
82fc28fb | 804 | } |
c7c01a4a | 805 | if (unlikely(btrfs_chunk_sector_size(leaf, chunk) != fs_info->sectorsize)) { |
d001e4a3 | 806 | chunk_err(leaf, chunk, logical, |
f1140243 QW |
807 | "invalid chunk sectorsize, have %u expect %u", |
808 | btrfs_chunk_sector_size(leaf, chunk), | |
809 | fs_info->sectorsize); | |
bf871c3b | 810 | return -EUCLEAN; |
82fc28fb | 811 | } |
c7c01a4a | 812 | if (unlikely(!length || !IS_ALIGNED(length, fs_info->sectorsize))) { |
d001e4a3 | 813 | chunk_err(leaf, chunk, logical, |
f1140243 | 814 | "invalid chunk length, have %llu", length); |
bf871c3b | 815 | return -EUCLEAN; |
82fc28fb | 816 | } |
c7c01a4a | 817 | if (unlikely(!is_power_of_2(stripe_len) || stripe_len != BTRFS_STRIPE_LEN)) { |
d001e4a3 | 818 | chunk_err(leaf, chunk, logical, |
f1140243 | 819 | "invalid chunk stripe length: %llu", |
82fc28fb | 820 | stripe_len); |
bf871c3b | 821 | return -EUCLEAN; |
82fc28fb | 822 | } |
c7c01a4a DS |
823 | if (unlikely(type & ~(BTRFS_BLOCK_GROUP_TYPE_MASK | |
824 | BTRFS_BLOCK_GROUP_PROFILE_MASK))) { | |
d001e4a3 | 825 | chunk_err(leaf, chunk, logical, |
f1140243 | 826 | "unrecognized chunk type: 0x%llx", |
82fc28fb QW |
827 | ~(BTRFS_BLOCK_GROUP_TYPE_MASK | |
828 | BTRFS_BLOCK_GROUP_PROFILE_MASK) & | |
829 | btrfs_chunk_type(leaf, chunk)); | |
bf871c3b | 830 | return -EUCLEAN; |
82fc28fb QW |
831 | } |
832 | ||
c7c01a4a DS |
833 | if (unlikely(!has_single_bit_set(type & BTRFS_BLOCK_GROUP_PROFILE_MASK) && |
834 | (type & BTRFS_BLOCK_GROUP_PROFILE_MASK) != 0)) { | |
d001e4a3 | 835 | chunk_err(leaf, chunk, logical, |
80e46cf2 QW |
836 | "invalid chunk profile flag: 0x%llx, expect 0 or 1 bit set", |
837 | type & BTRFS_BLOCK_GROUP_PROFILE_MASK); | |
838 | return -EUCLEAN; | |
839 | } | |
c7c01a4a | 840 | if (unlikely((type & BTRFS_BLOCK_GROUP_TYPE_MASK) == 0)) { |
d001e4a3 | 841 | chunk_err(leaf, chunk, logical, |
f1140243 QW |
842 | "missing chunk type flag, have 0x%llx one bit must be set in 0x%llx", |
843 | type, BTRFS_BLOCK_GROUP_TYPE_MASK); | |
bf871c3b | 844 | return -EUCLEAN; |
82fc28fb QW |
845 | } |
846 | ||
c7c01a4a DS |
847 | if (unlikely((type & BTRFS_BLOCK_GROUP_SYSTEM) && |
848 | (type & (BTRFS_BLOCK_GROUP_METADATA | | |
849 | BTRFS_BLOCK_GROUP_DATA)))) { | |
d001e4a3 | 850 | chunk_err(leaf, chunk, logical, |
f1140243 QW |
851 | "system chunk with data or metadata type: 0x%llx", |
852 | type); | |
bf871c3b | 853 | return -EUCLEAN; |
82fc28fb QW |
854 | } |
855 | ||
856 | features = btrfs_super_incompat_flags(fs_info->super_copy); | |
857 | if (features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) | |
858 | mixed = true; | |
859 | ||
860 | if (!mixed) { | |
c7c01a4a DS |
861 | if (unlikely((type & BTRFS_BLOCK_GROUP_METADATA) && |
862 | (type & BTRFS_BLOCK_GROUP_DATA))) { | |
d001e4a3 | 863 | chunk_err(leaf, chunk, logical, |
82fc28fb | 864 | "mixed chunk type in non-mixed mode: 0x%llx", type); |
bf871c3b | 865 | return -EUCLEAN; |
82fc28fb QW |
866 | } |
867 | } | |
868 | ||
c7c01a4a DS |
869 | if (unlikely((type & BTRFS_BLOCK_GROUP_RAID10 && sub_stripes != 2) || |
870 | (type & BTRFS_BLOCK_GROUP_RAID1 && num_stripes != 2) || | |
871 | (type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes < 2) || | |
872 | (type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes < 3) || | |
873 | (type & BTRFS_BLOCK_GROUP_DUP && num_stripes != 2) || | |
874 | ((type & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0 && | |
875 | num_stripes != 1))) { | |
d001e4a3 | 876 | chunk_err(leaf, chunk, logical, |
82fc28fb QW |
877 | "invalid num_stripes:sub_stripes %u:%u for profile %llu", |
878 | num_stripes, sub_stripes, | |
879 | type & BTRFS_BLOCK_GROUP_PROFILE_MASK); | |
bf871c3b | 880 | return -EUCLEAN; |
82fc28fb QW |
881 | } |
882 | ||
883 | return 0; | |
fce466ea QW |
884 | } |
885 | ||
f6d2a5c2 QW |
886 | /* |
887 | * Enhanced version of chunk item checker. | |
888 | * | |
889 | * The common btrfs_check_chunk_valid() doesn't check item size since it needs | |
890 | * to work on super block sys_chunk_array which doesn't have full item ptr. | |
891 | */ | |
892 | static int check_leaf_chunk_item(struct extent_buffer *leaf, | |
893 | struct btrfs_chunk *chunk, | |
894 | struct btrfs_key *key, int slot) | |
895 | { | |
896 | int num_stripes; | |
897 | ||
c7c01a4a | 898 | if (unlikely(btrfs_item_size_nr(leaf, slot) < sizeof(struct btrfs_chunk))) { |
f6d2a5c2 QW |
899 | chunk_err(leaf, chunk, key->offset, |
900 | "invalid chunk item size: have %u expect [%zu, %u)", | |
901 | btrfs_item_size_nr(leaf, slot), | |
902 | sizeof(struct btrfs_chunk), | |
903 | BTRFS_LEAF_DATA_SIZE(leaf->fs_info)); | |
904 | return -EUCLEAN; | |
905 | } | |
906 | ||
907 | num_stripes = btrfs_chunk_num_stripes(leaf, chunk); | |
908 | /* Let btrfs_check_chunk_valid() handle this error type */ | |
909 | if (num_stripes == 0) | |
910 | goto out; | |
911 | ||
c7c01a4a DS |
912 | if (unlikely(btrfs_chunk_item_size(num_stripes) != |
913 | btrfs_item_size_nr(leaf, slot))) { | |
f6d2a5c2 QW |
914 | chunk_err(leaf, chunk, key->offset, |
915 | "invalid chunk item size: have %u expect %lu", | |
916 | btrfs_item_size_nr(leaf, slot), | |
917 | btrfs_chunk_item_size(num_stripes)); | |
918 | return -EUCLEAN; | |
919 | } | |
920 | out: | |
921 | return btrfs_check_chunk_valid(leaf, chunk, key->offset); | |
922 | } | |
923 | ||
5617ed80 | 924 | __printf(3, 4) |
ab4ba2e1 | 925 | __cold |
5617ed80 | 926 | static void dev_item_err(const struct extent_buffer *eb, int slot, |
ab4ba2e1 QW |
927 | const char *fmt, ...) |
928 | { | |
929 | struct btrfs_key key; | |
930 | struct va_format vaf; | |
931 | va_list args; | |
932 | ||
933 | btrfs_item_key_to_cpu(eb, &key, slot); | |
934 | va_start(args, fmt); | |
935 | ||
936 | vaf.fmt = fmt; | |
937 | vaf.va = &args; | |
938 | ||
5617ed80 | 939 | btrfs_crit(eb->fs_info, |
ab4ba2e1 QW |
940 | "corrupt %s: root=%llu block=%llu slot=%d devid=%llu %pV", |
941 | btrfs_header_level(eb) == 0 ? "leaf" : "node", | |
942 | btrfs_header_owner(eb), btrfs_header_bytenr(eb), slot, | |
943 | key.objectid, &vaf); | |
944 | va_end(args); | |
945 | } | |
946 | ||
412a2312 | 947 | static int check_dev_item(struct extent_buffer *leaf, |
ab4ba2e1 QW |
948 | struct btrfs_key *key, int slot) |
949 | { | |
950 | struct btrfs_dev_item *ditem; | |
ab4ba2e1 | 951 | |
c7c01a4a | 952 | if (unlikely(key->objectid != BTRFS_DEV_ITEMS_OBJECTID)) { |
5617ed80 | 953 | dev_item_err(leaf, slot, |
ab4ba2e1 QW |
954 | "invalid objectid: has=%llu expect=%llu", |
955 | key->objectid, BTRFS_DEV_ITEMS_OBJECTID); | |
956 | return -EUCLEAN; | |
957 | } | |
ab4ba2e1 | 958 | ditem = btrfs_item_ptr(leaf, slot, struct btrfs_dev_item); |
c7c01a4a | 959 | if (unlikely(btrfs_device_id(leaf, ditem) != key->offset)) { |
5617ed80 | 960 | dev_item_err(leaf, slot, |
ab4ba2e1 QW |
961 | "devid mismatch: key has=%llu item has=%llu", |
962 | key->offset, btrfs_device_id(leaf, ditem)); | |
963 | return -EUCLEAN; | |
964 | } | |
965 | ||
966 | /* | |
967 | * For device total_bytes, we don't have reliable way to check it, as | |
968 | * it can be 0 for device removal. Device size check can only be done | |
969 | * by dev extents check. | |
970 | */ | |
c7c01a4a DS |
971 | if (unlikely(btrfs_device_bytes_used(leaf, ditem) > |
972 | btrfs_device_total_bytes(leaf, ditem))) { | |
5617ed80 | 973 | dev_item_err(leaf, slot, |
ab4ba2e1 QW |
974 | "invalid bytes used: have %llu expect [0, %llu]", |
975 | btrfs_device_bytes_used(leaf, ditem), | |
976 | btrfs_device_total_bytes(leaf, ditem)); | |
977 | return -EUCLEAN; | |
978 | } | |
979 | /* | |
980 | * Remaining members like io_align/type/gen/dev_group aren't really | |
981 | * utilized. Skip them to make later usage of them easier. | |
982 | */ | |
983 | return 0; | |
984 | } | |
985 | ||
39e57f49 | 986 | static int check_inode_item(struct extent_buffer *leaf, |
496245ca QW |
987 | struct btrfs_key *key, int slot) |
988 | { | |
39e57f49 | 989 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
496245ca QW |
990 | struct btrfs_inode_item *iitem; |
991 | u64 super_gen = btrfs_super_generation(fs_info->super_copy); | |
992 | u32 valid_mask = (S_IFMT | S_ISUID | S_ISGID | S_ISVTX | 0777); | |
993 | u32 mode; | |
c23c77b0 QW |
994 | int ret; |
995 | ||
996 | ret = check_inode_key(leaf, key, slot); | |
c7c01a4a | 997 | if (unlikely(ret < 0)) |
c23c77b0 | 998 | return ret; |
496245ca | 999 | |
496245ca QW |
1000 | iitem = btrfs_item_ptr(leaf, slot, struct btrfs_inode_item); |
1001 | ||
1002 | /* Here we use super block generation + 1 to handle log tree */ | |
c7c01a4a | 1003 | if (unlikely(btrfs_inode_generation(leaf, iitem) > super_gen + 1)) { |
c3053ebb | 1004 | inode_item_err(leaf, slot, |
496245ca QW |
1005 | "invalid inode generation: has %llu expect (0, %llu]", |
1006 | btrfs_inode_generation(leaf, iitem), | |
1007 | super_gen + 1); | |
1008 | return -EUCLEAN; | |
1009 | } | |
1010 | /* Note for ROOT_TREE_DIR_ITEM, mkfs could set its transid 0 */ | |
c7c01a4a | 1011 | if (unlikely(btrfs_inode_transid(leaf, iitem) > super_gen + 1)) { |
c3053ebb | 1012 | inode_item_err(leaf, slot, |
f96d6960 | 1013 | "invalid inode transid: has %llu expect [0, %llu]", |
496245ca QW |
1014 | btrfs_inode_transid(leaf, iitem), super_gen + 1); |
1015 | return -EUCLEAN; | |
1016 | } | |
1017 | ||
1018 | /* | |
1019 | * For size and nbytes it's better not to be too strict, as for dir | |
1020 | * item its size/nbytes can easily get wrong, but doesn't affect | |
1021 | * anything in the fs. So here we skip the check. | |
1022 | */ | |
1023 | mode = btrfs_inode_mode(leaf, iitem); | |
c7c01a4a | 1024 | if (unlikely(mode & ~valid_mask)) { |
c3053ebb | 1025 | inode_item_err(leaf, slot, |
496245ca QW |
1026 | "unknown mode bit detected: 0x%x", |
1027 | mode & ~valid_mask); | |
1028 | return -EUCLEAN; | |
1029 | } | |
1030 | ||
1031 | /* | |
c1499166 DS |
1032 | * S_IFMT is not bit mapped so we can't completely rely on |
1033 | * is_power_of_2/has_single_bit_set, but it can save us from checking | |
1034 | * FIFO/CHR/DIR/REG. Only needs to check BLK, LNK and SOCKS | |
496245ca | 1035 | */ |
c1499166 | 1036 | if (!has_single_bit_set(mode & S_IFMT)) { |
c7c01a4a | 1037 | if (unlikely(!S_ISLNK(mode) && !S_ISBLK(mode) && !S_ISSOCK(mode))) { |
c3053ebb | 1038 | inode_item_err(leaf, slot, |
496245ca QW |
1039 | "invalid mode: has 0%o expect valid S_IF* bit(s)", |
1040 | mode & S_IFMT); | |
1041 | return -EUCLEAN; | |
1042 | } | |
1043 | } | |
c7c01a4a | 1044 | if (unlikely(S_ISDIR(mode) && btrfs_inode_nlink(leaf, iitem) > 1)) { |
c3053ebb | 1045 | inode_item_err(leaf, slot, |
496245ca QW |
1046 | "invalid nlink: has %u expect no more than 1 for dir", |
1047 | btrfs_inode_nlink(leaf, iitem)); | |
1048 | return -EUCLEAN; | |
1049 | } | |
c7c01a4a | 1050 | if (unlikely(btrfs_inode_flags(leaf, iitem) & ~BTRFS_INODE_FLAG_MASK)) { |
c3053ebb | 1051 | inode_item_err(leaf, slot, |
496245ca QW |
1052 | "unknown flags detected: 0x%llx", |
1053 | btrfs_inode_flags(leaf, iitem) & | |
1054 | ~BTRFS_INODE_FLAG_MASK); | |
1055 | return -EUCLEAN; | |
1056 | } | |
1057 | return 0; | |
1058 | } | |
1059 | ||
259ee775 QW |
1060 | static int check_root_item(struct extent_buffer *leaf, struct btrfs_key *key, |
1061 | int slot) | |
1062 | { | |
1063 | struct btrfs_fs_info *fs_info = leaf->fs_info; | |
1465af12 | 1064 | struct btrfs_root_item ri = { 0 }; |
259ee775 QW |
1065 | const u64 valid_root_flags = BTRFS_ROOT_SUBVOL_RDONLY | |
1066 | BTRFS_ROOT_SUBVOL_DEAD; | |
57a0e674 | 1067 | int ret; |
259ee775 | 1068 | |
57a0e674 | 1069 | ret = check_root_key(leaf, key, slot); |
c7c01a4a | 1070 | if (unlikely(ret < 0)) |
57a0e674 | 1071 | return ret; |
259ee775 | 1072 | |
c7c01a4a DS |
1073 | if (unlikely(btrfs_item_size_nr(leaf, slot) != sizeof(ri) && |
1074 | btrfs_item_size_nr(leaf, slot) != | |
1075 | btrfs_legacy_root_item_size())) { | |
259ee775 | 1076 | generic_err(leaf, slot, |
1465af12 QW |
1077 | "invalid root item size, have %u expect %zu or %u", |
1078 | btrfs_item_size_nr(leaf, slot), sizeof(ri), | |
1079 | btrfs_legacy_root_item_size()); | |
1a49a97d | 1080 | return -EUCLEAN; |
259ee775 QW |
1081 | } |
1082 | ||
1465af12 QW |
1083 | /* |
1084 | * For legacy root item, the members starting at generation_v2 will be | |
1085 | * all filled with 0. | |
1086 | * And since we allow geneartion_v2 as 0, it will still pass the check. | |
1087 | */ | |
259ee775 | 1088 | read_extent_buffer(leaf, &ri, btrfs_item_ptr_offset(leaf, slot), |
1465af12 | 1089 | btrfs_item_size_nr(leaf, slot)); |
259ee775 QW |
1090 | |
1091 | /* Generation related */ | |
c7c01a4a DS |
1092 | if (unlikely(btrfs_root_generation(&ri) > |
1093 | btrfs_super_generation(fs_info->super_copy) + 1)) { | |
259ee775 QW |
1094 | generic_err(leaf, slot, |
1095 | "invalid root generation, have %llu expect (0, %llu]", | |
1096 | btrfs_root_generation(&ri), | |
1097 | btrfs_super_generation(fs_info->super_copy) + 1); | |
1098 | return -EUCLEAN; | |
1099 | } | |
c7c01a4a DS |
1100 | if (unlikely(btrfs_root_generation_v2(&ri) > |
1101 | btrfs_super_generation(fs_info->super_copy) + 1)) { | |
259ee775 QW |
1102 | generic_err(leaf, slot, |
1103 | "invalid root v2 generation, have %llu expect (0, %llu]", | |
1104 | btrfs_root_generation_v2(&ri), | |
1105 | btrfs_super_generation(fs_info->super_copy) + 1); | |
1106 | return -EUCLEAN; | |
1107 | } | |
c7c01a4a DS |
1108 | if (unlikely(btrfs_root_last_snapshot(&ri) > |
1109 | btrfs_super_generation(fs_info->super_copy) + 1)) { | |
259ee775 QW |
1110 | generic_err(leaf, slot, |
1111 | "invalid root last_snapshot, have %llu expect (0, %llu]", | |
1112 | btrfs_root_last_snapshot(&ri), | |
1113 | btrfs_super_generation(fs_info->super_copy) + 1); | |
1114 | return -EUCLEAN; | |
1115 | } | |
1116 | ||
1117 | /* Alignment and level check */ | |
c7c01a4a | 1118 | if (unlikely(!IS_ALIGNED(btrfs_root_bytenr(&ri), fs_info->sectorsize))) { |
259ee775 QW |
1119 | generic_err(leaf, slot, |
1120 | "invalid root bytenr, have %llu expect to be aligned to %u", | |
1121 | btrfs_root_bytenr(&ri), fs_info->sectorsize); | |
1122 | return -EUCLEAN; | |
1123 | } | |
c7c01a4a | 1124 | if (unlikely(btrfs_root_level(&ri) >= BTRFS_MAX_LEVEL)) { |
259ee775 QW |
1125 | generic_err(leaf, slot, |
1126 | "invalid root level, have %u expect [0, %u]", | |
1127 | btrfs_root_level(&ri), BTRFS_MAX_LEVEL - 1); | |
1128 | return -EUCLEAN; | |
1129 | } | |
c7c01a4a | 1130 | if (unlikely(btrfs_root_drop_level(&ri) >= BTRFS_MAX_LEVEL)) { |
259ee775 QW |
1131 | generic_err(leaf, slot, |
1132 | "invalid root level, have %u expect [0, %u]", | |
c8422684 | 1133 | btrfs_root_drop_level(&ri), BTRFS_MAX_LEVEL - 1); |
259ee775 QW |
1134 | return -EUCLEAN; |
1135 | } | |
1136 | ||
1137 | /* Flags check */ | |
c7c01a4a | 1138 | if (unlikely(btrfs_root_flags(&ri) & ~valid_root_flags)) { |
259ee775 QW |
1139 | generic_err(leaf, slot, |
1140 | "invalid root flags, have 0x%llx expect mask 0x%llx", | |
1141 | btrfs_root_flags(&ri), valid_root_flags); | |
1142 | return -EUCLEAN; | |
1143 | } | |
1144 | return 0; | |
1145 | } | |
1146 | ||
f82d1c7c QW |
1147 | __printf(3,4) |
1148 | __cold | |
1149 | static void extent_err(const struct extent_buffer *eb, int slot, | |
1150 | const char *fmt, ...) | |
1151 | { | |
1152 | struct btrfs_key key; | |
1153 | struct va_format vaf; | |
1154 | va_list args; | |
1155 | u64 bytenr; | |
1156 | u64 len; | |
1157 | ||
1158 | btrfs_item_key_to_cpu(eb, &key, slot); | |
1159 | bytenr = key.objectid; | |
e2406a6f QW |
1160 | if (key.type == BTRFS_METADATA_ITEM_KEY || |
1161 | key.type == BTRFS_TREE_BLOCK_REF_KEY || | |
1162 | key.type == BTRFS_SHARED_BLOCK_REF_KEY) | |
f82d1c7c QW |
1163 | len = eb->fs_info->nodesize; |
1164 | else | |
1165 | len = key.offset; | |
1166 | va_start(args, fmt); | |
1167 | ||
1168 | vaf.fmt = fmt; | |
1169 | vaf.va = &args; | |
1170 | ||
1171 | btrfs_crit(eb->fs_info, | |
1172 | "corrupt %s: block=%llu slot=%d extent bytenr=%llu len=%llu %pV", | |
1173 | btrfs_header_level(eb) == 0 ? "leaf" : "node", | |
1174 | eb->start, slot, bytenr, len, &vaf); | |
1175 | va_end(args); | |
1176 | } | |
1177 | ||
1178 | static int check_extent_item(struct extent_buffer *leaf, | |
1179 | struct btrfs_key *key, int slot) | |
1180 | { | |
1181 | struct btrfs_fs_info *fs_info = leaf->fs_info; | |
1182 | struct btrfs_extent_item *ei; | |
1183 | bool is_tree_block = false; | |
1184 | unsigned long ptr; /* Current pointer inside inline refs */ | |
1185 | unsigned long end; /* Extent item end */ | |
1186 | const u32 item_size = btrfs_item_size_nr(leaf, slot); | |
1187 | u64 flags; | |
1188 | u64 generation; | |
1189 | u64 total_refs; /* Total refs in btrfs_extent_item */ | |
1190 | u64 inline_refs = 0; /* found total inline refs */ | |
1191 | ||
c7c01a4a DS |
1192 | if (unlikely(key->type == BTRFS_METADATA_ITEM_KEY && |
1193 | !btrfs_fs_incompat(fs_info, SKINNY_METADATA))) { | |
f82d1c7c QW |
1194 | generic_err(leaf, slot, |
1195 | "invalid key type, METADATA_ITEM type invalid when SKINNY_METADATA feature disabled"); | |
1196 | return -EUCLEAN; | |
1197 | } | |
1198 | /* key->objectid is the bytenr for both key types */ | |
c7c01a4a | 1199 | if (unlikely(!IS_ALIGNED(key->objectid, fs_info->sectorsize))) { |
f82d1c7c QW |
1200 | generic_err(leaf, slot, |
1201 | "invalid key objectid, have %llu expect to be aligned to %u", | |
1202 | key->objectid, fs_info->sectorsize); | |
1203 | return -EUCLEAN; | |
1204 | } | |
1205 | ||
1206 | /* key->offset is tree level for METADATA_ITEM_KEY */ | |
c7c01a4a DS |
1207 | if (unlikely(key->type == BTRFS_METADATA_ITEM_KEY && |
1208 | key->offset >= BTRFS_MAX_LEVEL)) { | |
f82d1c7c QW |
1209 | extent_err(leaf, slot, |
1210 | "invalid tree level, have %llu expect [0, %u]", | |
1211 | key->offset, BTRFS_MAX_LEVEL - 1); | |
1212 | return -EUCLEAN; | |
1213 | } | |
1214 | ||
1215 | /* | |
1216 | * EXTENT/METADATA_ITEM consists of: | |
1217 | * 1) One btrfs_extent_item | |
1218 | * Records the total refs, type and generation of the extent. | |
1219 | * | |
1220 | * 2) One btrfs_tree_block_info (for EXTENT_ITEM and tree backref only) | |
1221 | * Records the first key and level of the tree block. | |
1222 | * | |
1223 | * 2) Zero or more btrfs_extent_inline_ref(s) | |
1224 | * Each inline ref has one btrfs_extent_inline_ref shows: | |
1225 | * 2.1) The ref type, one of the 4 | |
1226 | * TREE_BLOCK_REF Tree block only | |
1227 | * SHARED_BLOCK_REF Tree block only | |
1228 | * EXTENT_DATA_REF Data only | |
1229 | * SHARED_DATA_REF Data only | |
1230 | * 2.2) Ref type specific data | |
1231 | * Either using btrfs_extent_inline_ref::offset, or specific | |
1232 | * data structure. | |
1233 | */ | |
c7c01a4a | 1234 | if (unlikely(item_size < sizeof(*ei))) { |
f82d1c7c QW |
1235 | extent_err(leaf, slot, |
1236 | "invalid item size, have %u expect [%zu, %u)", | |
1237 | item_size, sizeof(*ei), | |
1238 | BTRFS_LEAF_DATA_SIZE(fs_info)); | |
1239 | return -EUCLEAN; | |
1240 | } | |
1241 | end = item_size + btrfs_item_ptr_offset(leaf, slot); | |
1242 | ||
1243 | /* Checks against extent_item */ | |
1244 | ei = btrfs_item_ptr(leaf, slot, struct btrfs_extent_item); | |
1245 | flags = btrfs_extent_flags(leaf, ei); | |
1246 | total_refs = btrfs_extent_refs(leaf, ei); | |
1247 | generation = btrfs_extent_generation(leaf, ei); | |
c7c01a4a DS |
1248 | if (unlikely(generation > |
1249 | btrfs_super_generation(fs_info->super_copy) + 1)) { | |
f82d1c7c QW |
1250 | extent_err(leaf, slot, |
1251 | "invalid generation, have %llu expect (0, %llu]", | |
1252 | generation, | |
1253 | btrfs_super_generation(fs_info->super_copy) + 1); | |
1254 | return -EUCLEAN; | |
1255 | } | |
c7c01a4a DS |
1256 | if (unlikely(!has_single_bit_set(flags & (BTRFS_EXTENT_FLAG_DATA | |
1257 | BTRFS_EXTENT_FLAG_TREE_BLOCK)))) { | |
f82d1c7c QW |
1258 | extent_err(leaf, slot, |
1259 | "invalid extent flag, have 0x%llx expect 1 bit set in 0x%llx", | |
1260 | flags, BTRFS_EXTENT_FLAG_DATA | | |
1261 | BTRFS_EXTENT_FLAG_TREE_BLOCK); | |
1262 | return -EUCLEAN; | |
1263 | } | |
1264 | is_tree_block = !!(flags & BTRFS_EXTENT_FLAG_TREE_BLOCK); | |
1265 | if (is_tree_block) { | |
c7c01a4a DS |
1266 | if (unlikely(key->type == BTRFS_EXTENT_ITEM_KEY && |
1267 | key->offset != fs_info->nodesize)) { | |
f82d1c7c QW |
1268 | extent_err(leaf, slot, |
1269 | "invalid extent length, have %llu expect %u", | |
1270 | key->offset, fs_info->nodesize); | |
1271 | return -EUCLEAN; | |
1272 | } | |
1273 | } else { | |
c7c01a4a | 1274 | if (unlikely(key->type != BTRFS_EXTENT_ITEM_KEY)) { |
f82d1c7c QW |
1275 | extent_err(leaf, slot, |
1276 | "invalid key type, have %u expect %u for data backref", | |
1277 | key->type, BTRFS_EXTENT_ITEM_KEY); | |
1278 | return -EUCLEAN; | |
1279 | } | |
c7c01a4a | 1280 | if (unlikely(!IS_ALIGNED(key->offset, fs_info->sectorsize))) { |
f82d1c7c QW |
1281 | extent_err(leaf, slot, |
1282 | "invalid extent length, have %llu expect aligned to %u", | |
1283 | key->offset, fs_info->sectorsize); | |
1284 | return -EUCLEAN; | |
1285 | } | |
1286 | } | |
1287 | ptr = (unsigned long)(struct btrfs_extent_item *)(ei + 1); | |
1288 | ||
1289 | /* Check the special case of btrfs_tree_block_info */ | |
1290 | if (is_tree_block && key->type != BTRFS_METADATA_ITEM_KEY) { | |
1291 | struct btrfs_tree_block_info *info; | |
1292 | ||
1293 | info = (struct btrfs_tree_block_info *)ptr; | |
c7c01a4a | 1294 | if (unlikely(btrfs_tree_block_level(leaf, info) >= BTRFS_MAX_LEVEL)) { |
f82d1c7c QW |
1295 | extent_err(leaf, slot, |
1296 | "invalid tree block info level, have %u expect [0, %u]", | |
1297 | btrfs_tree_block_level(leaf, info), | |
1298 | BTRFS_MAX_LEVEL - 1); | |
1299 | return -EUCLEAN; | |
1300 | } | |
1301 | ptr = (unsigned long)(struct btrfs_tree_block_info *)(info + 1); | |
1302 | } | |
1303 | ||
1304 | /* Check inline refs */ | |
1305 | while (ptr < end) { | |
1306 | struct btrfs_extent_inline_ref *iref; | |
1307 | struct btrfs_extent_data_ref *dref; | |
1308 | struct btrfs_shared_data_ref *sref; | |
1309 | u64 dref_offset; | |
1310 | u64 inline_offset; | |
1311 | u8 inline_type; | |
1312 | ||
c7c01a4a | 1313 | if (unlikely(ptr + sizeof(*iref) > end)) { |
f82d1c7c QW |
1314 | extent_err(leaf, slot, |
1315 | "inline ref item overflows extent item, ptr %lu iref size %zu end %lu", | |
1316 | ptr, sizeof(*iref), end); | |
1317 | return -EUCLEAN; | |
1318 | } | |
1319 | iref = (struct btrfs_extent_inline_ref *)ptr; | |
1320 | inline_type = btrfs_extent_inline_ref_type(leaf, iref); | |
1321 | inline_offset = btrfs_extent_inline_ref_offset(leaf, iref); | |
c7c01a4a | 1322 | if (unlikely(ptr + btrfs_extent_inline_ref_size(inline_type) > end)) { |
f82d1c7c QW |
1323 | extent_err(leaf, slot, |
1324 | "inline ref item overflows extent item, ptr %lu iref size %u end %lu", | |
1325 | ptr, inline_type, end); | |
1326 | return -EUCLEAN; | |
1327 | } | |
1328 | ||
1329 | switch (inline_type) { | |
1330 | /* inline_offset is subvolid of the owner, no need to check */ | |
1331 | case BTRFS_TREE_BLOCK_REF_KEY: | |
1332 | inline_refs++; | |
1333 | break; | |
1334 | /* Contains parent bytenr */ | |
1335 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
c7c01a4a DS |
1336 | if (unlikely(!IS_ALIGNED(inline_offset, |
1337 | fs_info->sectorsize))) { | |
f82d1c7c QW |
1338 | extent_err(leaf, slot, |
1339 | "invalid tree parent bytenr, have %llu expect aligned to %u", | |
1340 | inline_offset, fs_info->sectorsize); | |
1341 | return -EUCLEAN; | |
1342 | } | |
1343 | inline_refs++; | |
1344 | break; | |
1345 | /* | |
1346 | * Contains owner subvolid, owner key objectid, adjusted offset. | |
1347 | * The only obvious corruption can happen in that offset. | |
1348 | */ | |
1349 | case BTRFS_EXTENT_DATA_REF_KEY: | |
1350 | dref = (struct btrfs_extent_data_ref *)(&iref->offset); | |
1351 | dref_offset = btrfs_extent_data_ref_offset(leaf, dref); | |
c7c01a4a DS |
1352 | if (unlikely(!IS_ALIGNED(dref_offset, |
1353 | fs_info->sectorsize))) { | |
f82d1c7c QW |
1354 | extent_err(leaf, slot, |
1355 | "invalid data ref offset, have %llu expect aligned to %u", | |
1356 | dref_offset, fs_info->sectorsize); | |
1357 | return -EUCLEAN; | |
1358 | } | |
1359 | inline_refs += btrfs_extent_data_ref_count(leaf, dref); | |
1360 | break; | |
1361 | /* Contains parent bytenr and ref count */ | |
1362 | case BTRFS_SHARED_DATA_REF_KEY: | |
1363 | sref = (struct btrfs_shared_data_ref *)(iref + 1); | |
c7c01a4a DS |
1364 | if (unlikely(!IS_ALIGNED(inline_offset, |
1365 | fs_info->sectorsize))) { | |
f82d1c7c QW |
1366 | extent_err(leaf, slot, |
1367 | "invalid data parent bytenr, have %llu expect aligned to %u", | |
1368 | inline_offset, fs_info->sectorsize); | |
1369 | return -EUCLEAN; | |
1370 | } | |
1371 | inline_refs += btrfs_shared_data_ref_count(leaf, sref); | |
1372 | break; | |
1373 | default: | |
1374 | extent_err(leaf, slot, "unknown inline ref type: %u", | |
1375 | inline_type); | |
1376 | return -EUCLEAN; | |
1377 | } | |
1378 | ptr += btrfs_extent_inline_ref_size(inline_type); | |
1379 | } | |
1380 | /* No padding is allowed */ | |
c7c01a4a | 1381 | if (unlikely(ptr != end)) { |
f82d1c7c QW |
1382 | extent_err(leaf, slot, |
1383 | "invalid extent item size, padding bytes found"); | |
1384 | return -EUCLEAN; | |
1385 | } | |
1386 | ||
1387 | /* Finally, check the inline refs against total refs */ | |
c7c01a4a | 1388 | if (unlikely(inline_refs > total_refs)) { |
f82d1c7c QW |
1389 | extent_err(leaf, slot, |
1390 | "invalid extent refs, have %llu expect >= inline %llu", | |
1391 | total_refs, inline_refs); | |
1392 | return -EUCLEAN; | |
1393 | } | |
1394 | return 0; | |
1395 | } | |
1396 | ||
e2406a6f QW |
1397 | static int check_simple_keyed_refs(struct extent_buffer *leaf, |
1398 | struct btrfs_key *key, int slot) | |
1399 | { | |
1400 | u32 expect_item_size = 0; | |
1401 | ||
1402 | if (key->type == BTRFS_SHARED_DATA_REF_KEY) | |
1403 | expect_item_size = sizeof(struct btrfs_shared_data_ref); | |
1404 | ||
c7c01a4a | 1405 | if (unlikely(btrfs_item_size_nr(leaf, slot) != expect_item_size)) { |
e2406a6f QW |
1406 | generic_err(leaf, slot, |
1407 | "invalid item size, have %u expect %u for key type %u", | |
1408 | btrfs_item_size_nr(leaf, slot), | |
1409 | expect_item_size, key->type); | |
1410 | return -EUCLEAN; | |
1411 | } | |
c7c01a4a | 1412 | if (unlikely(!IS_ALIGNED(key->objectid, leaf->fs_info->sectorsize))) { |
e2406a6f QW |
1413 | generic_err(leaf, slot, |
1414 | "invalid key objectid for shared block ref, have %llu expect aligned to %u", | |
1415 | key->objectid, leaf->fs_info->sectorsize); | |
1416 | return -EUCLEAN; | |
1417 | } | |
c7c01a4a DS |
1418 | if (unlikely(key->type != BTRFS_TREE_BLOCK_REF_KEY && |
1419 | !IS_ALIGNED(key->offset, leaf->fs_info->sectorsize))) { | |
e2406a6f QW |
1420 | extent_err(leaf, slot, |
1421 | "invalid tree parent bytenr, have %llu expect aligned to %u", | |
1422 | key->offset, leaf->fs_info->sectorsize); | |
1423 | return -EUCLEAN; | |
1424 | } | |
1425 | return 0; | |
1426 | } | |
1427 | ||
0785a9aa QW |
1428 | static int check_extent_data_ref(struct extent_buffer *leaf, |
1429 | struct btrfs_key *key, int slot) | |
1430 | { | |
1431 | struct btrfs_extent_data_ref *dref; | |
1432 | unsigned long ptr = btrfs_item_ptr_offset(leaf, slot); | |
1433 | const unsigned long end = ptr + btrfs_item_size_nr(leaf, slot); | |
1434 | ||
c7c01a4a | 1435 | if (unlikely(btrfs_item_size_nr(leaf, slot) % sizeof(*dref) != 0)) { |
0785a9aa QW |
1436 | generic_err(leaf, slot, |
1437 | "invalid item size, have %u expect aligned to %zu for key type %u", | |
1438 | btrfs_item_size_nr(leaf, slot), | |
1439 | sizeof(*dref), key->type); | |
6d06b0ad | 1440 | return -EUCLEAN; |
0785a9aa | 1441 | } |
c7c01a4a | 1442 | if (unlikely(!IS_ALIGNED(key->objectid, leaf->fs_info->sectorsize))) { |
0785a9aa QW |
1443 | generic_err(leaf, slot, |
1444 | "invalid key objectid for shared block ref, have %llu expect aligned to %u", | |
1445 | key->objectid, leaf->fs_info->sectorsize); | |
1446 | return -EUCLEAN; | |
1447 | } | |
1448 | for (; ptr < end; ptr += sizeof(*dref)) { | |
1449 | u64 root_objectid; | |
1450 | u64 owner; | |
1451 | u64 offset; | |
1452 | u64 hash; | |
1453 | ||
1454 | dref = (struct btrfs_extent_data_ref *)ptr; | |
1455 | root_objectid = btrfs_extent_data_ref_root(leaf, dref); | |
1456 | owner = btrfs_extent_data_ref_objectid(leaf, dref); | |
1457 | offset = btrfs_extent_data_ref_offset(leaf, dref); | |
1458 | hash = hash_extent_data_ref(root_objectid, owner, offset); | |
c7c01a4a | 1459 | if (unlikely(hash != key->offset)) { |
0785a9aa QW |
1460 | extent_err(leaf, slot, |
1461 | "invalid extent data ref hash, item has 0x%016llx key has 0x%016llx", | |
1462 | hash, key->offset); | |
1463 | return -EUCLEAN; | |
1464 | } | |
c7c01a4a | 1465 | if (unlikely(!IS_ALIGNED(offset, leaf->fs_info->sectorsize))) { |
0785a9aa QW |
1466 | extent_err(leaf, slot, |
1467 | "invalid extent data backref offset, have %llu expect aligned to %u", | |
1468 | offset, leaf->fs_info->sectorsize); | |
6d06b0ad | 1469 | return -EUCLEAN; |
0785a9aa QW |
1470 | } |
1471 | } | |
1472 | return 0; | |
1473 | } | |
1474 | ||
c3053ebb QW |
1475 | #define inode_ref_err(eb, slot, fmt, args...) \ |
1476 | inode_item_err(eb, slot, fmt, ##args) | |
71bf92a9 QW |
1477 | static int check_inode_ref(struct extent_buffer *leaf, |
1478 | struct btrfs_key *key, struct btrfs_key *prev_key, | |
1479 | int slot) | |
1480 | { | |
1481 | struct btrfs_inode_ref *iref; | |
1482 | unsigned long ptr; | |
1483 | unsigned long end; | |
1484 | ||
c7c01a4a | 1485 | if (unlikely(!check_prev_ino(leaf, key, slot, prev_key))) |
80d7fd1e | 1486 | return -EUCLEAN; |
71bf92a9 | 1487 | /* namelen can't be 0, so item_size == sizeof() is also invalid */ |
c7c01a4a | 1488 | if (unlikely(btrfs_item_size_nr(leaf, slot) <= sizeof(*iref))) { |
c3053ebb | 1489 | inode_ref_err(leaf, slot, |
71bf92a9 QW |
1490 | "invalid item size, have %u expect (%zu, %u)", |
1491 | btrfs_item_size_nr(leaf, slot), | |
1492 | sizeof(*iref), BTRFS_LEAF_DATA_SIZE(leaf->fs_info)); | |
1493 | return -EUCLEAN; | |
1494 | } | |
1495 | ||
1496 | ptr = btrfs_item_ptr_offset(leaf, slot); | |
1497 | end = ptr + btrfs_item_size_nr(leaf, slot); | |
1498 | while (ptr < end) { | |
1499 | u16 namelen; | |
1500 | ||
c7c01a4a | 1501 | if (unlikely(ptr + sizeof(iref) > end)) { |
c3053ebb | 1502 | inode_ref_err(leaf, slot, |
71bf92a9 QW |
1503 | "inode ref overflow, ptr %lu end %lu inode_ref_size %zu", |
1504 | ptr, end, sizeof(iref)); | |
1505 | return -EUCLEAN; | |
1506 | } | |
1507 | ||
1508 | iref = (struct btrfs_inode_ref *)ptr; | |
1509 | namelen = btrfs_inode_ref_name_len(leaf, iref); | |
c7c01a4a | 1510 | if (unlikely(ptr + sizeof(*iref) + namelen > end)) { |
c3053ebb | 1511 | inode_ref_err(leaf, slot, |
71bf92a9 QW |
1512 | "inode ref overflow, ptr %lu end %lu namelen %u", |
1513 | ptr, end, namelen); | |
1514 | return -EUCLEAN; | |
1515 | } | |
1516 | ||
1517 | /* | |
1518 | * NOTE: In theory we should record all found index numbers | |
1519 | * to find any duplicated indexes, but that will be too time | |
1520 | * consuming for inodes with too many hard links. | |
1521 | */ | |
1522 | ptr += sizeof(*iref) + namelen; | |
1523 | } | |
1524 | return 0; | |
1525 | } | |
1526 | ||
557ea5dd QW |
1527 | /* |
1528 | * Common point to switch the item-specific validation. | |
1529 | */ | |
0076bc89 | 1530 | static int check_leaf_item(struct extent_buffer *leaf, |
4e9845ef FM |
1531 | struct btrfs_key *key, int slot, |
1532 | struct btrfs_key *prev_key) | |
557ea5dd QW |
1533 | { |
1534 | int ret = 0; | |
075cb3c7 | 1535 | struct btrfs_chunk *chunk; |
557ea5dd QW |
1536 | |
1537 | switch (key->type) { | |
1538 | case BTRFS_EXTENT_DATA_KEY: | |
4e9845ef | 1539 | ret = check_extent_data_item(leaf, key, slot, prev_key); |
557ea5dd QW |
1540 | break; |
1541 | case BTRFS_EXTENT_CSUM_KEY: | |
ad1d8c43 | 1542 | ret = check_csum_item(leaf, key, slot, prev_key); |
557ea5dd | 1543 | break; |
ad7b0368 QW |
1544 | case BTRFS_DIR_ITEM_KEY: |
1545 | case BTRFS_DIR_INDEX_KEY: | |
1546 | case BTRFS_XATTR_ITEM_KEY: | |
c18679eb | 1547 | ret = check_dir_item(leaf, key, prev_key, slot); |
ad7b0368 | 1548 | break; |
71bf92a9 QW |
1549 | case BTRFS_INODE_REF_KEY: |
1550 | ret = check_inode_ref(leaf, key, prev_key, slot); | |
1551 | break; | |
fce466ea | 1552 | case BTRFS_BLOCK_GROUP_ITEM_KEY: |
af60ce2b | 1553 | ret = check_block_group_item(leaf, key, slot); |
fce466ea | 1554 | break; |
075cb3c7 QW |
1555 | case BTRFS_CHUNK_ITEM_KEY: |
1556 | chunk = btrfs_item_ptr(leaf, slot, struct btrfs_chunk); | |
f6d2a5c2 | 1557 | ret = check_leaf_chunk_item(leaf, chunk, key, slot); |
075cb3c7 | 1558 | break; |
ab4ba2e1 | 1559 | case BTRFS_DEV_ITEM_KEY: |
412a2312 | 1560 | ret = check_dev_item(leaf, key, slot); |
ab4ba2e1 | 1561 | break; |
496245ca | 1562 | case BTRFS_INODE_ITEM_KEY: |
39e57f49 | 1563 | ret = check_inode_item(leaf, key, slot); |
496245ca | 1564 | break; |
259ee775 QW |
1565 | case BTRFS_ROOT_ITEM_KEY: |
1566 | ret = check_root_item(leaf, key, slot); | |
1567 | break; | |
f82d1c7c QW |
1568 | case BTRFS_EXTENT_ITEM_KEY: |
1569 | case BTRFS_METADATA_ITEM_KEY: | |
1570 | ret = check_extent_item(leaf, key, slot); | |
1571 | break; | |
e2406a6f QW |
1572 | case BTRFS_TREE_BLOCK_REF_KEY: |
1573 | case BTRFS_SHARED_DATA_REF_KEY: | |
1574 | case BTRFS_SHARED_BLOCK_REF_KEY: | |
1575 | ret = check_simple_keyed_refs(leaf, key, slot); | |
1576 | break; | |
0785a9aa QW |
1577 | case BTRFS_EXTENT_DATA_REF_KEY: |
1578 | ret = check_extent_data_ref(leaf, key, slot); | |
1579 | break; | |
557ea5dd QW |
1580 | } |
1581 | return ret; | |
1582 | } | |
1583 | ||
e2ccd361 | 1584 | static int check_leaf(struct extent_buffer *leaf, bool check_item_data) |
557ea5dd | 1585 | { |
e2ccd361 | 1586 | struct btrfs_fs_info *fs_info = leaf->fs_info; |
557ea5dd QW |
1587 | /* No valid key type is 0, so all key should be larger than this key */ |
1588 | struct btrfs_key prev_key = {0, 0, 0}; | |
1589 | struct btrfs_key key; | |
1590 | u32 nritems = btrfs_header_nritems(leaf); | |
1591 | int slot; | |
1592 | ||
c7c01a4a | 1593 | if (unlikely(btrfs_header_level(leaf) != 0)) { |
86a6be3a | 1594 | generic_err(leaf, 0, |
f556faa4 QW |
1595 | "invalid level for leaf, have %d expect 0", |
1596 | btrfs_header_level(leaf)); | |
1597 | return -EUCLEAN; | |
1598 | } | |
1599 | ||
557ea5dd QW |
1600 | /* |
1601 | * Extent buffers from a relocation tree have a owner field that | |
1602 | * corresponds to the subvolume tree they are based on. So just from an | |
1603 | * extent buffer alone we can not find out what is the id of the | |
1604 | * corresponding subvolume tree, so we can not figure out if the extent | |
1605 | * buffer corresponds to the root of the relocation tree or not. So | |
1606 | * skip this check for relocation trees. | |
1607 | */ | |
1608 | if (nritems == 0 && !btrfs_header_flag(leaf, BTRFS_HEADER_FLAG_RELOC)) { | |
ba480dd4 | 1609 | u64 owner = btrfs_header_owner(leaf); |
557ea5dd | 1610 | |
ba480dd4 | 1611 | /* These trees must never be empty */ |
c7c01a4a DS |
1612 | if (unlikely(owner == BTRFS_ROOT_TREE_OBJECTID || |
1613 | owner == BTRFS_CHUNK_TREE_OBJECTID || | |
1614 | owner == BTRFS_EXTENT_TREE_OBJECTID || | |
1615 | owner == BTRFS_DEV_TREE_OBJECTID || | |
1616 | owner == BTRFS_FS_TREE_OBJECTID || | |
1617 | owner == BTRFS_DATA_RELOC_TREE_OBJECTID)) { | |
86a6be3a | 1618 | generic_err(leaf, 0, |
ba480dd4 QW |
1619 | "invalid root, root %llu must never be empty", |
1620 | owner); | |
1621 | return -EUCLEAN; | |
1622 | } | |
62fdaa52 | 1623 | /* Unknown tree */ |
c7c01a4a | 1624 | if (unlikely(owner == 0)) { |
62fdaa52 QW |
1625 | generic_err(leaf, 0, |
1626 | "invalid owner, root 0 is not defined"); | |
1627 | return -EUCLEAN; | |
1628 | } | |
557ea5dd QW |
1629 | return 0; |
1630 | } | |
1631 | ||
c7c01a4a | 1632 | if (unlikely(nritems == 0)) |
557ea5dd QW |
1633 | return 0; |
1634 | ||
1635 | /* | |
1636 | * Check the following things to make sure this is a good leaf, and | |
1637 | * leaf users won't need to bother with similar sanity checks: | |
1638 | * | |
1639 | * 1) key ordering | |
1640 | * 2) item offset and size | |
1641 | * No overlap, no hole, all inside the leaf. | |
1642 | * 3) item content | |
1643 | * If possible, do comprehensive sanity check. | |
1644 | * NOTE: All checks must only rely on the item data itself. | |
1645 | */ | |
1646 | for (slot = 0; slot < nritems; slot++) { | |
1647 | u32 item_end_expected; | |
1648 | int ret; | |
1649 | ||
1650 | btrfs_item_key_to_cpu(leaf, &key, slot); | |
1651 | ||
1652 | /* Make sure the keys are in the right order */ | |
c7c01a4a | 1653 | if (unlikely(btrfs_comp_cpu_keys(&prev_key, &key) >= 0)) { |
86a6be3a | 1654 | generic_err(leaf, slot, |
478d01b3 QW |
1655 | "bad key order, prev (%llu %u %llu) current (%llu %u %llu)", |
1656 | prev_key.objectid, prev_key.type, | |
1657 | prev_key.offset, key.objectid, key.type, | |
1658 | key.offset); | |
557ea5dd QW |
1659 | return -EUCLEAN; |
1660 | } | |
1661 | ||
1662 | /* | |
1663 | * Make sure the offset and ends are right, remember that the | |
1664 | * item data starts at the end of the leaf and grows towards the | |
1665 | * front. | |
1666 | */ | |
1667 | if (slot == 0) | |
1668 | item_end_expected = BTRFS_LEAF_DATA_SIZE(fs_info); | |
1669 | else | |
1670 | item_end_expected = btrfs_item_offset_nr(leaf, | |
1671 | slot - 1); | |
c7c01a4a | 1672 | if (unlikely(btrfs_item_end_nr(leaf, slot) != item_end_expected)) { |
86a6be3a | 1673 | generic_err(leaf, slot, |
478d01b3 QW |
1674 | "unexpected item end, have %u expect %u", |
1675 | btrfs_item_end_nr(leaf, slot), | |
1676 | item_end_expected); | |
557ea5dd QW |
1677 | return -EUCLEAN; |
1678 | } | |
1679 | ||
1680 | /* | |
1681 | * Check to make sure that we don't point outside of the leaf, | |
1682 | * just in case all the items are consistent to each other, but | |
1683 | * all point outside of the leaf. | |
1684 | */ | |
c7c01a4a DS |
1685 | if (unlikely(btrfs_item_end_nr(leaf, slot) > |
1686 | BTRFS_LEAF_DATA_SIZE(fs_info))) { | |
86a6be3a | 1687 | generic_err(leaf, slot, |
478d01b3 QW |
1688 | "slot end outside of leaf, have %u expect range [0, %u]", |
1689 | btrfs_item_end_nr(leaf, slot), | |
1690 | BTRFS_LEAF_DATA_SIZE(fs_info)); | |
557ea5dd QW |
1691 | return -EUCLEAN; |
1692 | } | |
1693 | ||
1694 | /* Also check if the item pointer overlaps with btrfs item. */ | |
c7c01a4a DS |
1695 | if (unlikely(btrfs_item_ptr_offset(leaf, slot) < |
1696 | btrfs_item_nr_offset(slot) + sizeof(struct btrfs_item))) { | |
86a6be3a | 1697 | generic_err(leaf, slot, |
478d01b3 QW |
1698 | "slot overlaps with its data, item end %lu data start %lu", |
1699 | btrfs_item_nr_offset(slot) + | |
1700 | sizeof(struct btrfs_item), | |
1701 | btrfs_item_ptr_offset(leaf, slot)); | |
557ea5dd QW |
1702 | return -EUCLEAN; |
1703 | } | |
1704 | ||
69fc6cbb QW |
1705 | if (check_item_data) { |
1706 | /* | |
1707 | * Check if the item size and content meet other | |
1708 | * criteria | |
1709 | */ | |
4e9845ef | 1710 | ret = check_leaf_item(leaf, &key, slot, &prev_key); |
c7c01a4a | 1711 | if (unlikely(ret < 0)) |
69fc6cbb QW |
1712 | return ret; |
1713 | } | |
557ea5dd QW |
1714 | |
1715 | prev_key.objectid = key.objectid; | |
1716 | prev_key.type = key.type; | |
1717 | prev_key.offset = key.offset; | |
1718 | } | |
1719 | ||
1720 | return 0; | |
1721 | } | |
1722 | ||
1c4360ee | 1723 | int btrfs_check_leaf_full(struct extent_buffer *leaf) |
69fc6cbb | 1724 | { |
e2ccd361 | 1725 | return check_leaf(leaf, true); |
69fc6cbb | 1726 | } |
02529d7a | 1727 | ALLOW_ERROR_INJECTION(btrfs_check_leaf_full, ERRNO); |
69fc6cbb | 1728 | |
cfdaad5e | 1729 | int btrfs_check_leaf_relaxed(struct extent_buffer *leaf) |
69fc6cbb | 1730 | { |
e2ccd361 | 1731 | return check_leaf(leaf, false); |
69fc6cbb QW |
1732 | } |
1733 | ||
813fd1dc | 1734 | int btrfs_check_node(struct extent_buffer *node) |
557ea5dd | 1735 | { |
813fd1dc | 1736 | struct btrfs_fs_info *fs_info = node->fs_info; |
557ea5dd QW |
1737 | unsigned long nr = btrfs_header_nritems(node); |
1738 | struct btrfs_key key, next_key; | |
1739 | int slot; | |
f556faa4 | 1740 | int level = btrfs_header_level(node); |
557ea5dd QW |
1741 | u64 bytenr; |
1742 | int ret = 0; | |
1743 | ||
c7c01a4a | 1744 | if (unlikely(level <= 0 || level >= BTRFS_MAX_LEVEL)) { |
86a6be3a | 1745 | generic_err(node, 0, |
f556faa4 QW |
1746 | "invalid level for node, have %d expect [1, %d]", |
1747 | level, BTRFS_MAX_LEVEL - 1); | |
1748 | return -EUCLEAN; | |
1749 | } | |
c7c01a4a | 1750 | if (unlikely(nr == 0 || nr > BTRFS_NODEPTRS_PER_BLOCK(fs_info))) { |
2f659546 | 1751 | btrfs_crit(fs_info, |
bba4f298 | 1752 | "corrupt node: root=%llu block=%llu, nritems too %s, have %lu expect range [1,%u]", |
2f659546 | 1753 | btrfs_header_owner(node), node->start, |
bba4f298 | 1754 | nr == 0 ? "small" : "large", nr, |
2f659546 | 1755 | BTRFS_NODEPTRS_PER_BLOCK(fs_info)); |
bba4f298 | 1756 | return -EUCLEAN; |
557ea5dd QW |
1757 | } |
1758 | ||
1759 | for (slot = 0; slot < nr - 1; slot++) { | |
1760 | bytenr = btrfs_node_blockptr(node, slot); | |
1761 | btrfs_node_key_to_cpu(node, &key, slot); | |
1762 | btrfs_node_key_to_cpu(node, &next_key, slot + 1); | |
1763 | ||
c7c01a4a | 1764 | if (unlikely(!bytenr)) { |
86a6be3a | 1765 | generic_err(node, slot, |
bba4f298 QW |
1766 | "invalid NULL node pointer"); |
1767 | ret = -EUCLEAN; | |
1768 | goto out; | |
1769 | } | |
c7c01a4a | 1770 | if (unlikely(!IS_ALIGNED(bytenr, fs_info->sectorsize))) { |
86a6be3a | 1771 | generic_err(node, slot, |
bba4f298 | 1772 | "unaligned pointer, have %llu should be aligned to %u", |
2f659546 | 1773 | bytenr, fs_info->sectorsize); |
bba4f298 | 1774 | ret = -EUCLEAN; |
557ea5dd QW |
1775 | goto out; |
1776 | } | |
1777 | ||
c7c01a4a | 1778 | if (unlikely(btrfs_comp_cpu_keys(&key, &next_key) >= 0)) { |
86a6be3a | 1779 | generic_err(node, slot, |
bba4f298 QW |
1780 | "bad key order, current (%llu %u %llu) next (%llu %u %llu)", |
1781 | key.objectid, key.type, key.offset, | |
1782 | next_key.objectid, next_key.type, | |
1783 | next_key.offset); | |
1784 | ret = -EUCLEAN; | |
557ea5dd QW |
1785 | goto out; |
1786 | } | |
1787 | } | |
1788 | out: | |
1789 | return ret; | |
1790 | } | |
02529d7a | 1791 | ALLOW_ERROR_INJECTION(btrfs_check_node, ERRNO); |