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1/*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18#include "xfs.h"
19#include "xfs_format.h"
20#include "xfs_fs.h"
21#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
23#include "xfs_mount.h"
24#include "xfs_error.h"
25
26#ifdef DEBUG
27
28int xfs_etest[XFS_NUM_INJECT_ERROR];
29int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
30char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
31int xfs_error_test_active;
32
33int
34xfs_error_test(int error_tag, int *fsidp, char *expression,
35 int line, char *file, unsigned long randfactor)
36{
37 int i;
38 int64_t fsid;
39
40 if (prandom_u32() % randfactor)
41 return 0;
42
43 memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
44
45 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
46 if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
47 xfs_warn(NULL,
48 "Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
49 expression, file, line, xfs_etest_fsname[i]);
50 return 1;
51 }
52 }
53
54 return 0;
55}
56
57int
58xfs_errortag_add(int error_tag, xfs_mount_t *mp)
59{
60 int i;
61 int len;
62 int64_t fsid;
63
64 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
65
66 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
67 if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
68 xfs_warn(mp, "error tag #%d on", error_tag);
69 return 0;
70 }
71 }
72
73 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
74 if (xfs_etest[i] == 0) {
75 xfs_warn(mp, "Turned on XFS error tag #%d",
76 error_tag);
77 xfs_etest[i] = error_tag;
78 xfs_etest_fsid[i] = fsid;
79 len = strlen(mp->m_fsname);
80 xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
81 strcpy(xfs_etest_fsname[i], mp->m_fsname);
82 xfs_error_test_active++;
83 return 0;
84 }
85 }
86
87 xfs_warn(mp, "error tag overflow, too many turned on");
88
89 return 1;
90}
91
92int
93xfs_errortag_clearall(xfs_mount_t *mp, int loud)
94{
95 int64_t fsid;
96 int cleared = 0;
97 int i;
98
99 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
100
101
102 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
103 if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
104 xfs_etest[i] != 0) {
105 cleared = 1;
106 xfs_warn(mp, "Clearing XFS error tag #%d",
107 xfs_etest[i]);
108 xfs_etest[i] = 0;
109 xfs_etest_fsid[i] = 0LL;
110 kmem_free(xfs_etest_fsname[i]);
111 xfs_etest_fsname[i] = NULL;
112 xfs_error_test_active--;
113 }
114 }
115
116 if (loud || cleared)
117 xfs_warn(mp, "Cleared all XFS error tags for filesystem");
118
119 return 0;
120}
121#endif /* DEBUG */
122
123void
124xfs_error_report(
125 const char *tag,
126 int level,
127 struct xfs_mount *mp,
128 const char *filename,
129 int linenum,
130 void *ra)
131{
132 if (level <= xfs_error_level) {
133 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
134 "Internal error %s at line %d of file %s. Caller %pS",
135 tag, linenum, filename, ra);
136
137 xfs_stack_trace();
138 }
139}
140
141void
142xfs_corruption_error(
143 const char *tag,
144 int level,
145 struct xfs_mount *mp,
146 void *p,
147 const char *filename,
148 int linenum,
149 void *ra)
150{
151 if (level <= xfs_error_level)
152 xfs_hex_dump(p, 64);
153 xfs_error_report(tag, level, mp, filename, linenum, ra);
154 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
155}
156
157/*
158 * Warnings specifically for verifier errors. Differentiate CRC vs. invalid
159 * values, and omit the stack trace unless the error level is tuned high.
160 */
161void
162xfs_verifier_error(
163 struct xfs_buf *bp)
164{
165 struct xfs_mount *mp = bp->b_target->bt_mount;
166
167 xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
168 bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
169 __return_address, bp->b_ops->name, bp->b_bn);
170
171 xfs_alert(mp, "Unmount and run xfs_repair");
172
173 if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
174 xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
175 xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
176 }
177
178 if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
179 xfs_stack_trace();
180}
1/*
2 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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
7 * published by the Free Software Foundation.
8 *
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.
13 *
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
17 */
18#include "xfs.h"
19#include "xfs_format.h"
20#include "xfs_fs.h"
21#include "xfs_log_format.h"
22#include "xfs_trans_resv.h"
23#include "xfs_sb.h"
24#include "xfs_ag.h"
25#include "xfs_mount.h"
26#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;
46 xfs_notice(NULL, "%s: error %d", __func__, e);
47 BUG();
48 break;
49 }
50 return e;
51}
52
53int xfs_etest[XFS_NUM_INJECT_ERROR];
54int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
55char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
56int xfs_error_test_active;
57
58int
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
65 if (prandom_u32() % randfactor)
66 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) {
72 xfs_warn(NULL,
73 "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) {
93 xfs_warn(mp, "error tag #%d on", error_tag);
94 return 0;
95 }
96 }
97
98 for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
99 if (xfs_etest[i] == 0) {
100 xfs_warn(mp, "Turned on XFS error tag #%d",
101 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);
107 xfs_error_test_active++;
108 return 0;
109 }
110 }
111
112 xfs_warn(mp, "error tag overflow, too many turned on");
113
114 return 1;
115}
116
117int
118xfs_errortag_clearall(xfs_mount_t *mp, int loud)
119{
120 int64_t fsid;
121 int cleared = 0;
122 int i;
123
124 memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
125
126
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;
131 xfs_warn(mp, "Clearing XFS error tag #%d",
132 xfs_etest[i]);
133 xfs_etest[i] = 0;
134 xfs_etest_fsid[i] = 0LL;
135 kmem_free(xfs_etest_fsname[i]);
136 xfs_etest_fsname[i] = NULL;
137 xfs_error_test_active--;
138 }
139 }
140
141 if (loud || cleared)
142 xfs_warn(mp, "Cleared all XFS error tags for filesystem");
143
144 return 0;
145}
146#endif /* DEBUG */
147
148void
149xfs_error_report(
150 const char *tag,
151 int level,
152 struct xfs_mount *mp,
153 const char *filename,
154 int linenum,
155 inst_t *ra)
156{
157 if (level <= xfs_error_level) {
158 xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
159 "Internal error %s at line %d of file %s. Caller %pF",
160 tag, linenum, filename, ra);
161
162 xfs_stack_trace();
163 }
164}
165
166void
167xfs_corruption_error(
168 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)
175{
176 if (level <= xfs_error_level)
177 xfs_hex_dump(p, 64);
178 xfs_error_report(tag, level, mp, filename, linenum, ra);
179 xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
180}
181
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}