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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Nathan Scott7b718762005-11-02 14:58:39 +11002 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
Nathan Scott7b718762005-11-02 14:58:39 +11005 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 * published by the Free Software Foundation.
8 *
Nathan Scott7b718762005-11-02 14:58:39 +11009 * 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.
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
Nathan Scott7b718762005-11-02 14:58:39 +110014 * 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#include "xfs.h"
Dave Chinnera4fbe6a2013-10-23 10:51:50 +110019#include "xfs_format.h"
Nathan Scotta844f452005-11-02 14:38:42 +110020#include "xfs_fs.h"
Dave Chinner239880e2013-10-23 10:50:10 +110021#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
Nathan Scotta844f452005-11-02 14:38:42 +110023#include "xfs_sb.h"
David Chinnerda353b02007-08-28 14:00:13 +100024#include "xfs_ag.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include "xfs_mount.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include "xfs_error.h"
27
28#ifdef DEBUG
29
30int xfs_etrap[XFS_ERROR_NTRAP] = {
31 0,
32};
33
34int
35xfs_error_trap(int e)
36{
37 int i;
38
39 if (!e)
40 return 0;
41 for (i = 0; i < XFS_ERROR_NTRAP; i++) {
42 if (xfs_etrap[i] == 0)
43 break;
44 if (e != xfs_etrap[i])
45 continue;
Dave Chinner0b932cc2011-03-07 10:08:35 +110046 xfs_notice(NULL, "%s: error %d", __func__, e);
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 BUG();
48 break;
49 }
50 return e;
51}
Linus Torvalds1da177e2005-04-16 15:20:36 -070052
53int xfs_etest[XFS_NUM_INJECT_ERROR];
54int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
55char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
Dave Chinnerc76febe2010-11-30 15:15:31 +110056int xfs_error_test_active;
Linus Torvalds1da177e2005-04-16 15:20:36 -070057
Linus Torvalds1da177e2005-04-16 15:20:36 -070058int
59xfs_error_test(int error_tag, int *fsidp, char *expression,
60 int line, char *file, unsigned long randfactor)
61{
62 int i;
63 int64_t fsid;
64
Akinobu Mitaecb34032013-03-04 21:58:20 +090065 if (prandom_u32() % randfactor)
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 return 0;
67
68 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
69
70 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
71 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
Dave Chinner0b932cc2011-03-07 10:08:35 +110072 xfs_warn(NULL,
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
74 expression, file, line, xfs_etest_fsname[i]);
75 return 1;
76 }
77 }
78
79 return 0;
80}
81
82int
83xfs_errortag_add(int error_tag, xfs_mount_t *mp)
84{
85 int i;
86 int len;
87 int64_t fsid;
88
89 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
90
91 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
92 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
Dave Chinner0b932cc2011-03-07 10:08:35 +110093 xfs_warn(mp, "error tag #%d on", error_tag);
Linus Torvalds1da177e2005-04-16 15:20:36 -070094 return 0;
95 }
96 }
97
98 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
99 if (xfs_etest[i] == 0) {
Dave Chinner0b932cc2011-03-07 10:08:35 +1100100 xfs_warn(mp, "Turned on XFS error tag #%d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 error_tag);
102 xfs_etest[i] = error_tag;
103 xfs_etest_fsid[i] = fsid;
104 len = strlen(mp->m_fsname);
105 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
106 strcpy(xfs_etest_fsname[i], mp->m_fsname);
Dave Chinnerc76febe2010-11-30 15:15:31 +1100107 xfs_error_test_active++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 return 0;
109 }
110 }
111
Dave Chinner0b932cc2011-03-07 10:08:35 +1100112 xfs_warn(mp, "error tag overflow, too many turned on");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114 return 1;
115}
116
117int
Christoph Hellwig0ce4cfd2007-08-30 17:20:53 +1000118xfs_errortag_clearall(xfs_mount_t *mp, int loud)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119{
Christoph Hellwig0ce4cfd2007-08-30 17:20:53 +1000120 int64_t fsid;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 int cleared = 0;
Christoph Hellwig0ce4cfd2007-08-30 17:20:53 +1000122 int i;
123
124 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126
127 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
128 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
129 xfs_etest[i] != 0) {
130 cleared = 1;
Dave Chinner0b932cc2011-03-07 10:08:35 +1100131 xfs_warn(mp, "Clearing XFS error tag #%d",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 xfs_etest[i]);
133 xfs_etest[i] = 0;
134 xfs_etest_fsid[i] = 0LL;
Denys Vlasenkof0e2d932008-05-19 16:31:57 +1000135 kmem_free(xfs_etest_fsname[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 xfs_etest_fsname[i] = NULL;
Dave Chinnerc76febe2010-11-30 15:15:31 +1100137 xfs_error_test_active--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 }
139 }
140
141 if (loud || cleared)
Dave Chinner0b932cc2011-03-07 10:08:35 +1100142 xfs_warn(mp, "Cleared all XFS error tags for filesystem");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
144 return 0;
145}
Christoph Hellwig1550d0b2008-08-13 16:17:37 +1000146#endif /* DEBUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148void
149xfs_error_report(
Alex Eldera0e856b2010-04-13 15:22:08 +1000150 const char *tag,
151 int level,
152 struct xfs_mount *mp,
153 const char *filename,
154 int linenum,
155 inst_t *ra)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156{
157 if (level <= xfs_error_level) {
Dave Chinner6a19d932011-03-07 10:02:35 +1100158 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
Eric Sandeendb9355c2014-02-27 15:21:37 +1100159 "Internal error %s at line %d of file %s. Caller %pF",
Alex Eldera0e856b2010-04-13 15:22:08 +1000160 tag, linenum, filename, ra);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
162 xfs_stack_trace();
163 }
164}
165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166void
167xfs_corruption_error(
Alex Eldera0e856b2010-04-13 15:22:08 +1000168 const char *tag,
169 int level,
170 struct xfs_mount *mp,
171 void *p,
172 const char *filename,
173 int linenum,
174 inst_t *ra)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175{
176 if (level <= xfs_error_level)
Dave Chinnera2050642013-04-03 16:11:11 +1100177 xfs_hex_dump(p, 64);
Alex Eldera0e856b2010-04-13 15:22:08 +1000178 xfs_error_report(tag, level, mp, filename, linenum, ra);
Dave Chinner65333b42011-03-07 10:03:35 +1100179 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180}
Eric Sandeenca23f8f2014-02-27 15:21:07 +1100181
182/*
183 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
184 * values, and omit the stack trace unless the error level is tuned high.
185 */
186void
187xfs_verifier_error(
188 struct xfs_buf *bp)
189{
190 struct xfs_mount *mp = bp->b_target->bt_mount;
191
192 xfs_alert(mp, "Metadata %s detected at %pF, block 0x%llx",
193 bp->b_error == EFSBADCRC ? "CRC error" : "corruption",
194 __return_address, bp->b_bn);
195
196 xfs_alert(mp, "Unmount and run xfs_repair");
197
198 if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
199 xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
200 xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
201 }
202
203 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
204 xfs_stack_trace();
205}