1 /*
2 * Copyright (c) 2004,2005 Voltaire Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 *
32 */
33
34 #define _GNU_SOURCE
35
36 #if HAVE_CONFIG_H
37 # include <config.h>
38 #endif /* HAVE_CONFIG_H */
39
40 #include <inttypes.h>
41 #include <string.h>
42 #include <errno.h>
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <unistd.h>
46 #include <stdarg.h>
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #include <fcntl.h>
50 #include <sys/ioctl.h>
51 #include <unistd.h>
52 #include <string.h>
53 #include <endian.h>
54 #include <byteswap.h>
55 #include <sys/poll.h>
56 #include <syslog.h>
57 #include <time.h>
58 #include <signal.h>
59
60 #include "common.h"
61
62 static int loop_on_panic;
63
64 void
stack_dump(void)65 stack_dump(void)
66 {
67 if (!__builtin_frame_address(1))
68 return
69 syslog(LOG_ALERT, "#1 %p\n", __builtin_return_address(1));
70
71 if (!__builtin_frame_address(2))
72 return
73 syslog(LOG_ALERT, "#2 %p\n", __builtin_return_address(2));
74
75 if (!__builtin_frame_address(3))
76 return
77 syslog(LOG_ALERT, "#3 %p\n", __builtin_return_address(3));
78
79 if (!__builtin_frame_address(4))
80 return
81 syslog(LOG_ALERT, "#4 %p\n", __builtin_return_address(4));
82
83 if (!__builtin_frame_address(5))
84 return
85 syslog(LOG_ALERT, "#5 %p\n", __builtin_return_address(5));
86
87 if (!__builtin_frame_address(6))
88 return
89 syslog(LOG_ALERT, "#6 %p\n", __builtin_return_address(6));
90
91 if (!__builtin_frame_address(7))
92 return
93 syslog(LOG_ALERT, "#7 %p\n", __builtin_return_address(7));
94
95 if (!__builtin_frame_address(8))
96 return
97 syslog(LOG_ALERT, "#8 %p\n", __builtin_return_address(8));
98
99 if (!__builtin_frame_address(9))
100 return
101 syslog(LOG_ALERT, "#9 %p\n", __builtin_return_address(9));
102
103 if (!__builtin_frame_address(10))
104 return
105 syslog(LOG_ALERT, "#10 %p\n", __builtin_return_address(10));
106
107 if (!__builtin_frame_address(11))
108 return
109 syslog(LOG_ALERT, "#11 %p\n", __builtin_return_address(11));
110
111 if (!__builtin_frame_address(12))
112 return
113 syslog(LOG_ALERT, "#12 %p\n", __builtin_return_address(12));
114
115 if (!__builtin_frame_address(13))
116 return
117 syslog(LOG_ALERT, "#13 %p\n", __builtin_return_address(13));
118
119 if (!__builtin_frame_address(14))
120 return
121 syslog(LOG_ALERT, "#14 %p\n", __builtin_return_address(14));
122
123 if (!__builtin_frame_address(15))
124 return
125 syslog(LOG_ALERT, "#15 %p\n", __builtin_return_address(15));
126
127 if (!__builtin_frame_address(16))
128 return
129 syslog(LOG_ALERT, "#16 %p\n", __builtin_return_address(16));
130
131 if (!__builtin_frame_address(17))
132 return
133 syslog(LOG_ALERT, "#17 %p\n", __builtin_return_address(17));
134
135 if (!__builtin_frame_address(18))
136 return
137 syslog(LOG_ALERT, "#18 %p\n", __builtin_return_address(18));
138 }
139
140 static void
handler(int x)141 handler(int x)
142 {
143 static int in;
144 time_t tm;
145
146 if (!in) {
147 in++;
148
149 syslog(LOG_ALERT, "*** exception handler: died with signal %d", x);
150 stack_dump();
151
152 fflush(NULL);
153
154 tm = time(0);
155 fprintf(stderr, "%s *** exception handler: died with signal %d pid %d\n",
156 ctime(&tm), x, getpid());
157
158 fflush(NULL);
159 }
160
161 if (loop_on_panic) {
162 fprintf(stderr, "exception handler: entering tight loop ... pid %d\n",getpid());
163 for (; ; )
164 ;
165 }
166
167 signal(x, SIG_DFL);
168 }
169
170 void
enable_stack_dump(int loop)171 enable_stack_dump(int loop)
172 {
173 loop_on_panic = loop;
174 signal(SIGILL, handler);
175 signal(SIGBUS, handler);
176 signal(SIGSEGV, handler);
177 signal(SIGABRT, handler);
178 }
179