1#!/usr/sbin/dtrace -Cs
2/*
3 * crash.d - Crashed Application info.
4 *           Written in DTrace (Solaris 10 3/05).
5 *
6 * 24-Apr-2006, ver 0.92
7 *
8 * When applications crash via a SIGSEGV or SIGBUS, a report of the
9 * process state is printed out.
10 *
11 * USAGE:       crash.d
12 *
13 * FIELDS:
14 *              Type		Signal type
15 *              Program		Execname of process
16 *              Agrs		Argument listing of process
17 *              PID		Process ID
18 *              TID		Thread ID
19 *              LWPs		Number of Light Weight Processes
20 *              PPID		Parent Process ID
21 *              UID		User ID
22 *              GID		Group ID
23 *              TaskID		Task ID
24 *              ProjID		Project ID
25 *              PoolID		Pool ID
26 *              ZoneID		Zone ID
27 *              zone		Zone name
28 *              CWD		Current working directory
29 *              errno		Error number of last syscall
30 *
31 * SEE ALSO: mdb, pstack, coreadm
32 *           app_crash.d - Greg Nakhimovsky & Morgan Herrington
33 *
34 * COPYRIGHT: Copyright (c) 2005 Brendan Gregg.
35 *
36 * CDDL HEADER START
37 *
38 *  The contents of this file are subject to the terms of the
39 *  Common Development and Distribution License, Version 1.0 only
40 *  (the "License").  You may not use this file except in compliance
41 *  with the License.
42 *
43 *  You can obtain a copy of the license at Docs/cddl1.txt
44 *  or http://www.opensolaris.org/os/licensing.
45 *  See the License for the specific language governing permissions
46 *  and limitations under the License.
47 *
48 * CDDL HEADER END
49 *
50 * 29-May-2005  Brendan Gregg   Created this.
51 */
52
53#pragma D option quiet
54#pragma D option destructive
55
56dtrace:::BEGIN
57{
58	printf("Waiting for crashing applications...\n");
59}
60
61/*
62 * Print Report Header
63 */
64proc:::signal-send
65/(args[2] == SIGBUS || args[2] == SIGSEGV) && pid == args[1]->pr_pid/
66{
67	stop();
68	self->elapsed = timestamp - curthread->t_procp->p_mstart;
69	self->crash = 1;
70
71	printf("\n-----------------------------------------------------\n");
72	printf("CRASH DETECTED at %Y\n", walltimestamp);
73	printf("-----------------------------------------------------\n");
74	printf("Type:    %s\n", args[2] == SIGBUS ? "SIGBUS" : "SIGSEGV");
75	printf("Program: %s\n", execname);
76	printf("Args:    %S\n", curpsinfo->pr_psargs);
77	printf("PID:     %d\n", pid);
78	printf("TID:     %d\n", tid);
79	printf("LWPs:    %d\n", curthread->t_procp->p_lwpcnt);
80	printf("PPID:    %d\n", ppid);
81	printf("UID:     %d\n", uid);
82	printf("GID:     %d\n", gid);
83	printf("TaskID:  %d\n", curpsinfo->pr_taskid);
84	printf("ProjID:  %d\n", curpsinfo->pr_projid);
85	printf("PoolID:  %d\n", curpsinfo->pr_poolid);
86	printf("ZoneID:  %d\n", curpsinfo->pr_zoneid);
87	printf("zone:    %s\n", zonename);
88	printf("CWD:     %s\n", cwd);
89	printf("errno:   %d\n", errno);
90
91	printf("\nUser Stack Backtrace,");
92	ustack();
93
94	printf("\nKernel Stack Backtrace,");
95	stack();
96}
97
98/*
99 * Print Java Details
100 */
101proc:::signal-send
102/self->crash && execname == "java"/
103{
104	printf("\nJava Stack Backtrace,");
105	jstack();
106}
107
108/*
109 * Print Ancestors
110 */
111proc:::signal-send
112/self->crash/
113{
114	printf("\nAnsestors,\n");
115	self->level = 1;
116	self->procp = curthread->t_procp;
117	self->ptr = self->procp;
118}
119
120/* ancestory un-rolled loop, reverse order, 6 deep */
121proc:::signal-send /self->crash && self->ptr != 0/
122{
123	printf("%*s %d %S\n", self->level += 2, "",
124	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
125	self->ptr = self->ptr->p_parent;
126}
127proc:::signal-send /self->crash && self->ptr != 0/
128{
129	printf("%*s %d %S\n", self->level += 2, "",
130	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
131	self->ptr = self->ptr->p_parent;
132}
133proc:::signal-send /self->crash && self->ptr != 0/
134{
135	printf("%*s %d %S\n", self->level += 2, "",
136	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
137	self->ptr = self->ptr->p_parent;
138}
139proc:::signal-send /self->crash && self->ptr != 0/
140{
141	printf("%*s %d %S\n", self->level += 2, "",
142	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
143	self->ptr = self->ptr->p_parent;
144}
145proc:::signal-send /self->crash && self->ptr != 0/
146{
147	printf("%*s %d %S\n", self->level += 2, "",
148	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
149	self->ptr = self->ptr->p_parent;
150}
151proc:::signal-send /self->crash && self->ptr != 0/
152{
153	printf("%*s %d %S\n", self->level += 2, "",
154	    self->ptr->p_pidp->pid_id, self->ptr->p_user.u_psargs);
155	self->ptr = self->ptr->p_parent;
156}
157
158/*
159 * Print Report Footer
160 */
161proc:::signal-send
162/self->crash/
163{
164
165	printf("\nTimes,\n");
166	printf("    User:    %d ticks\n", self->procp->p_utime);
167	printf("    Sys:     %d ticks\n", self->procp->p_stime);
168	printf("    Elapsed: %d ms\n", self->elapsed/1000000);
169
170	printf("\nSizes,\n");
171	printf("    Heap:   %d bytes\n", self->procp->p_brksize);
172	printf("    Stack:  %d bytes\n", self->procp->p_stksize);
173
174	self->ptr = 0;
175	self->procp = 0;
176	self->crash = 0;
177	self->level = 0;
178	self->elapsed = 0;
179	system("/usr/bin/prun %d", pid);
180}
181