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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a4fbe6ab | 19 | #include "xfs_format.h" |
a844f451 | 20 | #include "xfs_fs.h" |
239880ef DC |
21 | #include "xfs_log_format.h" |
22 | #include "xfs_trans_resv.h" | |
1da177e4 | 23 | #include "xfs_mount.h" |
e9e899a2 | 24 | #include "xfs_errortag.h" |
1da177e4 | 25 | #include "xfs_error.h" |
c6840101 | 26 | #include "xfs_sysfs.h" |
22431bf3 | 27 | #include "xfs_inode.h" |
1da177e4 LT |
28 | |
29 | #ifdef DEBUG | |
30 | ||
31965ef3 DW |
31 | static unsigned int xfs_errortag_random_default[] = { |
32 | XFS_RANDOM_DEFAULT, | |
33 | XFS_RANDOM_IFLUSH_1, | |
34 | XFS_RANDOM_IFLUSH_2, | |
35 | XFS_RANDOM_IFLUSH_3, | |
36 | XFS_RANDOM_IFLUSH_4, | |
37 | XFS_RANDOM_IFLUSH_5, | |
38 | XFS_RANDOM_IFLUSH_6, | |
39 | XFS_RANDOM_DA_READ_BUF, | |
40 | XFS_RANDOM_BTREE_CHECK_LBLOCK, | |
41 | XFS_RANDOM_BTREE_CHECK_SBLOCK, | |
42 | XFS_RANDOM_ALLOC_READ_AGF, | |
43 | XFS_RANDOM_IALLOC_READ_AGI, | |
44 | XFS_RANDOM_ITOBP_INOTOBP, | |
45 | XFS_RANDOM_IUNLINK, | |
46 | XFS_RANDOM_IUNLINK_REMOVE, | |
47 | XFS_RANDOM_DIR_INO_VALIDATE, | |
48 | XFS_RANDOM_BULKSTAT_READ_CHUNK, | |
49 | XFS_RANDOM_IODONE_IOERR, | |
50 | XFS_RANDOM_STRATREAD_IOERR, | |
51 | XFS_RANDOM_STRATCMPL_IOERR, | |
52 | XFS_RANDOM_DIOWRITE_IOERR, | |
53 | XFS_RANDOM_BMAPIFORMAT, | |
54 | XFS_RANDOM_FREE_EXTENT, | |
55 | XFS_RANDOM_RMAP_FINISH_ONE, | |
56 | XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE, | |
57 | XFS_RANDOM_REFCOUNT_FINISH_ONE, | |
58 | XFS_RANDOM_BMAP_FINISH_ONE, | |
59 | XFS_RANDOM_AG_RESV_CRITICAL, | |
f8c47250 | 60 | XFS_RANDOM_DROP_WRITES, |
3e88a007 | 61 | XFS_RANDOM_LOG_BAD_CRC, |
7f4d01f3 | 62 | XFS_RANDOM_LOG_ITEM_PIN, |
7561d27e | 63 | XFS_RANDOM_BUF_LRU_REF, |
31965ef3 | 64 | }; |
1da177e4 | 65 | |
c6840101 DW |
66 | struct xfs_errortag_attr { |
67 | struct attribute attr; | |
68 | unsigned int tag; | |
69 | }; | |
70 | ||
71 | static inline struct xfs_errortag_attr * | |
72 | to_attr(struct attribute *attr) | |
73 | { | |
74 | return container_of(attr, struct xfs_errortag_attr, attr); | |
75 | } | |
76 | ||
77 | static inline struct xfs_mount * | |
78 | to_mp(struct kobject *kobject) | |
79 | { | |
80 | struct xfs_kobj *kobj = to_kobj(kobject); | |
81 | ||
82 | return container_of(kobj, struct xfs_mount, m_errortag_kobj); | |
83 | } | |
84 | ||
85 | STATIC ssize_t | |
86 | xfs_errortag_attr_store( | |
87 | struct kobject *kobject, | |
88 | struct attribute *attr, | |
89 | const char *buf, | |
90 | size_t count) | |
91 | { | |
92 | struct xfs_mount *mp = to_mp(kobject); | |
93 | struct xfs_errortag_attr *xfs_attr = to_attr(attr); | |
94 | int ret; | |
95 | unsigned int val; | |
96 | ||
97 | if (strcmp(buf, "default") == 0) { | |
98 | val = xfs_errortag_random_default[xfs_attr->tag]; | |
99 | } else { | |
100 | ret = kstrtouint(buf, 0, &val); | |
101 | if (ret) | |
102 | return ret; | |
103 | } | |
104 | ||
105 | ret = xfs_errortag_set(mp, xfs_attr->tag, val); | |
106 | if (ret) | |
107 | return ret; | |
108 | return count; | |
109 | } | |
110 | ||
111 | STATIC ssize_t | |
112 | xfs_errortag_attr_show( | |
113 | struct kobject *kobject, | |
114 | struct attribute *attr, | |
115 | char *buf) | |
116 | { | |
117 | struct xfs_mount *mp = to_mp(kobject); | |
118 | struct xfs_errortag_attr *xfs_attr = to_attr(attr); | |
119 | ||
120 | return snprintf(buf, PAGE_SIZE, "%u\n", | |
121 | xfs_errortag_get(mp, xfs_attr->tag)); | |
122 | } | |
123 | ||
124 | static const struct sysfs_ops xfs_errortag_sysfs_ops = { | |
125 | .show = xfs_errortag_attr_show, | |
126 | .store = xfs_errortag_attr_store, | |
127 | }; | |
128 | ||
129 | #define XFS_ERRORTAG_ATTR_RW(_name, _tag) \ | |
130 | static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \ | |
131 | .attr = {.name = __stringify(_name), \ | |
132 | .mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \ | |
133 | .tag = (_tag), \ | |
134 | } | |
135 | ||
136 | #define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr | |
137 | ||
138 | XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR); | |
139 | XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1); | |
140 | XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2); | |
141 | XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3); | |
142 | XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4); | |
143 | XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5); | |
144 | XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6); | |
145 | XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF); | |
146 | XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK); | |
147 | XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK); | |
148 | XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF); | |
149 | XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI); | |
150 | XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP); | |
151 | XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK); | |
152 | XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE); | |
153 | XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE); | |
154 | XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK); | |
155 | XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR); | |
156 | XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR); | |
157 | XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR); | |
158 | XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR); | |
159 | XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT); | |
160 | XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT); | |
161 | XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE); | |
162 | XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE); | |
163 | XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE); | |
164 | XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE); | |
165 | XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL); | |
f8c47250 | 166 | XFS_ERRORTAG_ATTR_RW(drop_writes, XFS_ERRTAG_DROP_WRITES); |
3e88a007 | 167 | XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC); |
7f4d01f3 | 168 | XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN); |
7561d27e | 169 | XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF); |
c6840101 DW |
170 | |
171 | static struct attribute *xfs_errortag_attrs[] = { | |
172 | XFS_ERRORTAG_ATTR_LIST(noerror), | |
173 | XFS_ERRORTAG_ATTR_LIST(iflush1), | |
174 | XFS_ERRORTAG_ATTR_LIST(iflush2), | |
175 | XFS_ERRORTAG_ATTR_LIST(iflush3), | |
176 | XFS_ERRORTAG_ATTR_LIST(iflush4), | |
177 | XFS_ERRORTAG_ATTR_LIST(iflush5), | |
178 | XFS_ERRORTAG_ATTR_LIST(iflush6), | |
179 | XFS_ERRORTAG_ATTR_LIST(dareadbuf), | |
180 | XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk), | |
181 | XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk), | |
182 | XFS_ERRORTAG_ATTR_LIST(readagf), | |
183 | XFS_ERRORTAG_ATTR_LIST(readagi), | |
184 | XFS_ERRORTAG_ATTR_LIST(itobp), | |
185 | XFS_ERRORTAG_ATTR_LIST(iunlink), | |
186 | XFS_ERRORTAG_ATTR_LIST(iunlinkrm), | |
187 | XFS_ERRORTAG_ATTR_LIST(dirinovalid), | |
188 | XFS_ERRORTAG_ATTR_LIST(bulkstat), | |
189 | XFS_ERRORTAG_ATTR_LIST(logiodone), | |
190 | XFS_ERRORTAG_ATTR_LIST(stratread), | |
191 | XFS_ERRORTAG_ATTR_LIST(stratcmpl), | |
192 | XFS_ERRORTAG_ATTR_LIST(diowrite), | |
193 | XFS_ERRORTAG_ATTR_LIST(bmapifmt), | |
194 | XFS_ERRORTAG_ATTR_LIST(free_extent), | |
195 | XFS_ERRORTAG_ATTR_LIST(rmap_finish_one), | |
196 | XFS_ERRORTAG_ATTR_LIST(refcount_continue_update), | |
197 | XFS_ERRORTAG_ATTR_LIST(refcount_finish_one), | |
198 | XFS_ERRORTAG_ATTR_LIST(bmap_finish_one), | |
199 | XFS_ERRORTAG_ATTR_LIST(ag_resv_critical), | |
f8c47250 | 200 | XFS_ERRORTAG_ATTR_LIST(drop_writes), |
3e88a007 | 201 | XFS_ERRORTAG_ATTR_LIST(log_bad_crc), |
7f4d01f3 | 202 | XFS_ERRORTAG_ATTR_LIST(log_item_pin), |
7561d27e | 203 | XFS_ERRORTAG_ATTR_LIST(buf_lru_ref), |
c6840101 DW |
204 | NULL, |
205 | }; | |
206 | ||
4371155e | 207 | static struct kobj_type xfs_errortag_ktype = { |
c6840101 DW |
208 | .release = xfs_sysfs_release, |
209 | .sysfs_ops = &xfs_errortag_sysfs_ops, | |
210 | .default_attrs = xfs_errortag_attrs, | |
211 | }; | |
212 | ||
1da177e4 | 213 | int |
31965ef3 DW |
214 | xfs_errortag_init( |
215 | struct xfs_mount *mp) | |
1da177e4 | 216 | { |
31965ef3 DW |
217 | mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX, |
218 | KM_SLEEP | KM_MAYFAIL); | |
219 | if (!mp->m_errortag) | |
220 | return -ENOMEM; | |
c6840101 DW |
221 | |
222 | return xfs_sysfs_init(&mp->m_errortag_kobj, &xfs_errortag_ktype, | |
223 | &mp->m_kobj, "errortag"); | |
31965ef3 | 224 | } |
1da177e4 | 225 | |
31965ef3 DW |
226 | void |
227 | xfs_errortag_del( | |
228 | struct xfs_mount *mp) | |
229 | { | |
c6840101 | 230 | xfs_sysfs_del(&mp->m_errortag_kobj); |
31965ef3 DW |
231 | kmem_free(mp->m_errortag); |
232 | } | |
1da177e4 | 233 | |
31965ef3 DW |
234 | bool |
235 | xfs_errortag_test( | |
236 | struct xfs_mount *mp, | |
237 | const char *expression, | |
238 | const char *file, | |
239 | int line, | |
240 | unsigned int error_tag) | |
241 | { | |
242 | unsigned int randfactor; | |
1da177e4 | 243 | |
d04c241c CM |
244 | /* |
245 | * To be able to use error injection anywhere, we need to ensure error | |
246 | * injection mechanism is already initialized. | |
247 | * | |
248 | * Code paths like I/O completion can be called before the | |
249 | * initialization is complete, but be able to inject errors in such | |
250 | * places is still useful. | |
251 | */ | |
252 | if (!mp->m_errortag) | |
253 | return false; | |
254 | ||
31965ef3 DW |
255 | ASSERT(error_tag < XFS_ERRTAG_MAX); |
256 | randfactor = mp->m_errortag[error_tag]; | |
257 | if (!randfactor || prandom_u32() % randfactor) | |
258 | return false; | |
1da177e4 | 259 | |
31965ef3 DW |
260 | xfs_warn_ratelimited(mp, |
261 | "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"", | |
262 | expression, file, line, mp->m_fsname); | |
263 | return true; | |
1da177e4 LT |
264 | } |
265 | ||
c6840101 DW |
266 | int |
267 | xfs_errortag_get( | |
268 | struct xfs_mount *mp, | |
269 | unsigned int error_tag) | |
270 | { | |
271 | if (error_tag >= XFS_ERRTAG_MAX) | |
272 | return -EINVAL; | |
273 | ||
274 | return mp->m_errortag[error_tag]; | |
275 | } | |
276 | ||
1da177e4 | 277 | int |
31965ef3 DW |
278 | xfs_errortag_set( |
279 | struct xfs_mount *mp, | |
280 | unsigned int error_tag, | |
281 | unsigned int tag_value) | |
1da177e4 | 282 | { |
128f24d5 DW |
283 | if (error_tag >= XFS_ERRTAG_MAX) |
284 | return -EINVAL; | |
285 | ||
31965ef3 DW |
286 | mp->m_errortag[error_tag] = tag_value; |
287 | return 0; | |
1da177e4 LT |
288 | } |
289 | ||
1da177e4 | 290 | int |
31965ef3 DW |
291 | xfs_errortag_add( |
292 | struct xfs_mount *mp, | |
293 | unsigned int error_tag) | |
1da177e4 | 294 | { |
31965ef3 DW |
295 | if (error_tag >= XFS_ERRTAG_MAX) |
296 | return -EINVAL; | |
1da177e4 | 297 | |
31965ef3 DW |
298 | return xfs_errortag_set(mp, error_tag, |
299 | xfs_errortag_random_default[error_tag]); | |
300 | } | |
1da177e4 | 301 | |
31965ef3 DW |
302 | int |
303 | xfs_errortag_clearall( | |
304 | struct xfs_mount *mp) | |
305 | { | |
306 | memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX); | |
1da177e4 LT |
307 | return 0; |
308 | } | |
1550d0b0 | 309 | #endif /* DEBUG */ |
1da177e4 | 310 | |
1da177e4 LT |
311 | void |
312 | xfs_error_report( | |
a0e856b0 AE |
313 | const char *tag, |
314 | int level, | |
315 | struct xfs_mount *mp, | |
316 | const char *filename, | |
317 | int linenum, | |
d9418ed0 | 318 | xfs_failaddr_t failaddr) |
1da177e4 LT |
319 | { |
320 | if (level <= xfs_error_level) { | |
6a19d939 | 321 | xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT, |
65dd297a | 322 | "Internal error %s at line %d of file %s. Caller %pS", |
d9418ed0 | 323 | tag, linenum, filename, failaddr); |
1da177e4 LT |
324 | |
325 | xfs_stack_trace(); | |
326 | } | |
327 | } | |
328 | ||
1da177e4 LT |
329 | void |
330 | xfs_corruption_error( | |
a0e856b0 AE |
331 | const char *tag, |
332 | int level, | |
333 | struct xfs_mount *mp, | |
334 | void *p, | |
335 | const char *filename, | |
336 | int linenum, | |
d9418ed0 | 337 | xfs_failaddr_t failaddr) |
1da177e4 LT |
338 | { |
339 | if (level <= xfs_error_level) | |
9c712a13 | 340 | xfs_hex_dump(p, XFS_CORRUPTION_DUMP_LEN); |
d9418ed0 | 341 | xfs_error_report(tag, level, mp, filename, linenum, failaddr); |
65333b4c | 342 | xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair"); |
1da177e4 | 343 | } |
ca23f8fd ES |
344 | |
345 | /* | |
346 | * Warnings specifically for verifier errors. Differentiate CRC vs. invalid | |
347 | * values, and omit the stack trace unless the error level is tuned high. | |
348 | */ | |
349 | void | |
6edb1810 | 350 | xfs_buf_verifier_error( |
31ca03c9 | 351 | struct xfs_buf *bp, |
bc1a09b8 | 352 | int error, |
6edb1810 DW |
353 | const char *name, |
354 | void *buf, | |
355 | size_t bufsz, | |
bc1a09b8 | 356 | xfs_failaddr_t failaddr) |
ca23f8fd | 357 | { |
bc1a09b8 DW |
358 | struct xfs_mount *mp = bp->b_target->bt_mount; |
359 | xfs_failaddr_t fa; | |
6edb1810 | 360 | int sz; |
ca23f8fd | 361 | |
bc1a09b8 DW |
362 | fa = failaddr ? failaddr : __return_address; |
363 | __xfs_buf_ioerror(bp, error, fa); | |
31ca03c9 | 364 | |
6edb1810 | 365 | xfs_alert(mp, "Metadata %s detected at %pS, %s block 0x%llx %s", |
2451337d | 366 | bp->b_error == -EFSBADCRC ? "CRC error" : "corruption", |
6edb1810 | 367 | fa, bp->b_ops->name, bp->b_bn, name); |
ca23f8fd ES |
368 | |
369 | xfs_alert(mp, "Unmount and run xfs_repair"); | |
370 | ||
371 | if (xfs_error_level >= XFS_ERRLEVEL_LOW) { | |
6edb1810 | 372 | sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz); |
9c712a13 | 373 | xfs_alert(mp, "First %d bytes of corrupted metadata buffer:", |
6edb1810 DW |
374 | sz); |
375 | xfs_hex_dump(buf, sz); | |
ca23f8fd ES |
376 | } |
377 | ||
378 | if (xfs_error_level >= XFS_ERRLEVEL_HIGH) | |
379 | xfs_stack_trace(); | |
380 | } | |
22431bf3 | 381 | |
6edb1810 DW |
382 | /* |
383 | * Warnings specifically for verifier errors. Differentiate CRC vs. invalid | |
384 | * values, and omit the stack trace unless the error level is tuned high. | |
385 | */ | |
386 | void | |
387 | xfs_verifier_error( | |
388 | struct xfs_buf *bp, | |
389 | int error, | |
390 | xfs_failaddr_t failaddr) | |
391 | { | |
392 | return xfs_buf_verifier_error(bp, error, "", xfs_buf_offset(bp, 0), | |
393 | XFS_CORRUPTION_DUMP_LEN, failaddr); | |
394 | } | |
395 | ||
22431bf3 DW |
396 | /* |
397 | * Warnings for inode corruption problems. Don't bother with the stack | |
398 | * trace unless the error level is turned up high. | |
399 | */ | |
400 | void | |
401 | xfs_inode_verifier_error( | |
402 | struct xfs_inode *ip, | |
403 | int error, | |
404 | const char *name, | |
405 | void *buf, | |
406 | size_t bufsz, | |
407 | xfs_failaddr_t failaddr) | |
408 | { | |
409 | struct xfs_mount *mp = ip->i_mount; | |
410 | xfs_failaddr_t fa; | |
411 | int sz; | |
412 | ||
413 | fa = failaddr ? failaddr : __return_address; | |
414 | ||
415 | xfs_alert(mp, "Metadata %s detected at %pS, inode 0x%llx %s", | |
416 | error == -EFSBADCRC ? "CRC error" : "corruption", | |
417 | fa, ip->i_ino, name); | |
418 | ||
419 | xfs_alert(mp, "Unmount and run xfs_repair"); | |
420 | ||
421 | if (buf && xfs_error_level >= XFS_ERRLEVEL_LOW) { | |
422 | sz = min_t(size_t, XFS_CORRUPTION_DUMP_LEN, bufsz); | |
423 | xfs_alert(mp, "First %d bytes of corrupted metadata buffer:", | |
424 | sz); | |
425 | xfs_hex_dump(buf, sz); | |
426 | } | |
427 | ||
428 | if (xfs_error_level >= XFS_ERRLEVEL_HIGH) | |
429 | xfs_stack_trace(); | |
430 | } |