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SubjectRe: perf/poll: another perf_fuzzer lockup
On Thu, 21 Nov 2013, Vince Weaver wrote:
>
> This is with 3.12 on a core2 machine.

> [ 199.784001] <<EOE>> [<ffffffff81069ed5>] load_balance+0x2f2/0x609
> [ 199.784001] [<ffffffff8106a3d8>] idle_balance+0x9a/0x10c
> [ 199.784001] [<ffffffff8151f5a6>] __schedule+0x290/0x54b
> [ 199.784001] [<ffffffff8105beae>] ? __hrtimer_start_range_ns+0x2ed/0x2ff
> [ 199.784001] [<ffffffff8151fbbf>] schedule+0x64/0x66
> [ 199.784001] [<ffffffff8151ed18>] schedule_hrtimeout_range_clock+0xed/0x134
> [ 199.784001] [<ffffffff8105b659>] ? update_rmtp+0x65/0x65
> [ 199.784001] [<ffffffff8105beee>] ? hrtimer_start_range_ns+0x14/0x16
> [ 199.784001] [<ffffffff8151ed72>] schedule_hrtimeout_range+0x13/0x15
> [ 199.784001] [<ffffffff8112274d>] poll_schedule_timeout+0x48/0x64
> [ 199.784001] [<ffffffff81123453>] do_sys_poll+0x437/0x4d5
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff811228cf>] ? __pollwait+0xcc/0xcc
> [ 199.784001] [<ffffffff81123544>] SyS_poll+0x53/0xbc
> [ 199.784001] [<ffffffff81527b56>] system_call_fastpath+0x1a/0x1f
> [ 199.784001] ---[ end trace 1de1e48ddacc5178 ]---

So I wasn't able to reproduce this, but here's a list of events that were
active at the time of the crash. Not sure if that's useful or not.

148: PERF_TYPE_TRACEPOINT, 0x126; /* 294 ext4/ext4_mark_inode_dirty */
92: PERF_TYPE_TRACEPOINT, 0x1b; /* 27 irq_vectors/x86_platform_ipi_entry */
169: PERF_TYPE_TRACEPOINT, 0x1cd; /* 461 random/extract_entropy */
139: PERF_TYPE_TRACEPOINT, 0x21; /* 33 irq_vectors/reschedule_entry */
211: PERF_TYPE_TRACEPOINT, 0x25; /* 37 vsyscall/emulate_vsyscall */
196: PERF_TYPE_TRACEPOINT, 0x2b; /* 43 irq/softirq_raise */
75: PERF_TYPE_TRACEPOINT, 0x2e; /* 46 irq/irq_handler_exit */
16: PERF_TYPE_TRACEPOINT, 0x31; /* 49 timer/itimer_expire */
105: PERF_TYPE_TRACEPOINT, 0x38; /* 56 timer/timer_cancel */
81: PERF_TYPE_TRACEPOINT, 0x38; /* 56 timer/timer_cancel */
174: PERF_TYPE_TRACEPOINT, 0x39; /* 57 timer/timer_expire_exit */
138: PERF_TYPE_TRACEPOINT, 0x3a; /* 58 timer/timer_expire_entry */
215: PERF_TYPE_TRACEPOINT, 0x3b; /* 59 timer/timer_start */
129: PERF_TYPE_TRACEPOINT, 0x3c; /* 60 timer/timer_init */
87: PERF_TYPE_TRACEPOINT, 0x3c; /* 60 timer/timer_init */
55: PERF_TYPE_TRACEPOINT, 0x3d; /* 61 signal/signal_deliver */
32: PERF_TYPE_TRACEPOINT, 0x3e; /* 62 signal/signal_generate */
114: PERF_TYPE_TRACEPOINT, 0x71; /* 113 rpm/rpm_resume */
54: PERF_TYPE_TRACEPOINT, 0xe2; /* 226 ext4/ext4_get_reserved_cluster_alloc */
10: PERF_TYPE_BREAKPOINT, HW_BREAKPOINT_W, addr=0xffee, len=0x2
165: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
202: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
22: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
68: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
6: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
99: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
115: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
173: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
183: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
184: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
27: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
93: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
97: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BRANCH_MISSES;
121: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES;
180: PERF_TYPE_HARDWARE, PERF_COUNT_HW_BUS_CYCLES;
12: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES;
133: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES;
166: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_MISSES;
20: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CACHE_REFERENCES;
11: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
137: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
155: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
18: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
210: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
64: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
73: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
84: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
88: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
90: PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES;
111: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
125: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
153: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
154: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
160: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
164: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
189: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
42: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
44: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
70: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
79: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
82: PERF_TYPE_HARDWARE, PERF_COUNT_HW_INSTRUCTIONS;
100: PERF_TYPE_HW_CACHE, PERF_COUNT_HW_CACHE_BPU | ( PERF_COUNT_HW_CACHE_OP_READ << 8) | ( PERF_COUNT_HW_CACHE_RESULT_MISS << 16 );
51: PERF_TYPE_HW_CACHE, PERF_COUNT_HW_CACHE_BPU | ( PERF_COUNT_HW_CACHE_OP_READ << 8) | ( PERF_COUNT_HW_CACHE_RESULT_MISS << 16 );
46: PERF_TYPE_HW_CACHE, PERF_COUNT_HW_CACHE_L1D | ( PERF_COUNT_HW_CACHE_OP_READ << 8) | ( PERF_COUNT_HW_CACHE_RESULT_MISS << 16 );
149: PERF_TYPE_HW_CACHE, PERF_COUNT_HW_CACHE_L1D | ( PERF_COUNT_HW_CACHE_OP_WRITE << 8) | ( PERF_COUNT_HW_CACHE_RESULT_MISS << 16 );
50: PERF_TYPE_RAW, 0x0;
85: PERF_TYPE_RAW, 0x0;
35: PERF_TYPE_RAW, 0x100000000;
156: PERF_TYPE_RAW, 0x1000800af;
118: PERF_TYPE_RAW, 0x2000040001081;
58: PERF_TYPE_RAW, 0x200800000;
94: PERF_TYPE_RAW, 0x26;
130: PERF_TYPE_RAW, 0x3c;
37: PERF_TYPE_RAW, 0x40000000004800;
53: PERF_TYPE_RAW, 0x4f2e;
117: PERF_TYPE_RAW, 0x80000;
158: PERF_TYPE_RAW, 0x80000000;
108: PERF_TYPE_RAW, 0x8000000000000002;
41: PERF_TYPE_RAW, 0x8000000000000020;
8: PERF_TYPE_RAW, 0x800000000000007f;
135: PERF_TYPE_RAW, 0x80000000000000a9;
193: PERF_TYPE_RAW, 0x8000000008000004;
101: PERF_TYPE_RAW, 0x80000000088800ff;
214: PERF_TYPE_RAW, 0x800000805f5f5f5f;
59: PERF_TYPE_RAW, 0x804000000000a000;
15: PERF_TYPE_RAW, 0xc5;
40: PERF_TYPE_RAW, 0xc5;
188: PERF_TYPE_RAW, 0xdf;
5: PERF_TYPE_RAW, 0xffffffffd3cb7fa3;
185: PERF_TYPE_RAW, 0xffffffffe8dfa2d0;
14: PERF_TYPE_RAW, 0xffffffffff092c99;
102: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
103: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
104: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
106: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
107: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
109: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
110: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
112: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
113: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
116: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
119: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
120: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
122: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
124: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
126: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
127: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
128: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
131: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
132: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
134: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
136: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
13: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
140: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
141: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
142: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
143: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
144: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
145: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
146: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
150: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
152: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
157: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
159: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
162: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
167: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
168: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
171: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
177: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
178: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
179: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
17: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
181: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
186: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
187: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
191: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
192: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
194: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
198: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
199: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
19: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
200: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
201: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
206: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
207: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
208: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
209: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
212: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
213: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
21: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
23: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
24: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
25: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
26: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
28: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
29: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
30: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
31: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
33: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
34: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
36: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
38: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
39: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
3: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
43: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
45: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
47: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
48: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
49: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
4: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
52: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
56: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
57: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
60: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
61: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
62: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
63: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
65: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
66: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
67: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
69: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
71: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
72: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
74: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
76: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
77: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
78: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
7: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
80: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
83: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
86: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
89: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
91: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
95: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
96: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
98: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;
9: PERF_TYPE_SOFTWARE, PERF_COUNT_SW_TASK_CLOCK;


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