New submission from Gunnar Aastrand Grimnes:
This script, using requests and multiprocessing, will segfault on MacOS 16.4.0
with python 3.6.1. In 3.6.0 it runs fine.
The program is reduced from a much larger program, some weird things need to be
present to trigger the crash. For instance the unused tornado imports on the
top.
Crash log:
Process: Python [1510]
Path:
/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6/Resources/Python.app/Contents/MacOS/Python
Identifier: Python
Version: 3.6.1 (3.6.1)
Code Type: X86-64 (Native)
Parent Process: Python [1509]
Responsible: Python [1510]
User ID: 501
Date/Time: 2017-05-17 14:23:47.307 +0200
OS Version: Mac OS X 10.12.3 (16D32)
Report Version: 12
Anonymous UUID: DB16C70B-F979-86B6-864C-0AC84B0E6402
Sleep/Wake UUID: 03D0B108-E764-4834-A88D-7919CAF9B786
Time Awake Since Boot: 630 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.os.log
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000010b692832
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
VM Regions Near 0x10b692832:
VM_ALLOCATE 000000010b652000-000000010b692000 [ 256K] rw-/rwx
SM=COW
-->
shared memory 000000010b6e3000-000000010b6eb000 [ 32K] r--/rw-
SM=SHM
Application Specific Information:
crashed on child side of fork pre-exec
Thread 0 Crashed:: Dispatch queue: com.apple.os.log
0 libsystem_trace.dylib 0x00007fffab4bb622 _os_log_cmp_key + 4
1 libsystem_c.dylib 0x00007fffab324144 rb_tree_find_node +
58
2 libsystem_trace.dylib 0x00007fffab4bbb5a
__os_log_create_block_invoke + 30
3 libdispatch.dylib 0x00007fffab2460b8
_dispatch_client_callout + 8
4 libdispatch.dylib 0x00007fffab246cf2
_dispatch_barrier_sync_f_invoke + 83
5 libsystem_trace.dylib 0x00007fffab4bb8ac os_log_create + 590
6 com.apple.SystemConfiguration 0x00007fff9c8faafa
__SCDynamicStoreCheckRetryAndHandleError + 167
7 com.apple.SystemConfiguration 0x00007fff9c8f9e12
SCDynamicStoreCopyValue + 189
8 com.apple.SystemConfiguration 0x00007fff9c8fe6fb
SCDynamicStoreCopyProxiesWithOptions + 560
9 _scproxy.cpython-36m-darwin.so 0x000000010b536911 get_proxy_settings +
24
10 org.python.python 0x000000010a464081
_PyCFunction_FastCallDict + 526
11 org.python.python 0x000000010a4c87d7 call_function + 489
12 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
13 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
14 org.python.python 0x000000010a4c87ae call_function + 448
15 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
16 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
17 org.python.python 0x000000010a4c87ae call_function + 448
18 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
19 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
20 org.python.python 0x000000010a4c87ae call_function + 448
21 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
22 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
23 org.python.python 0x000000010a4c87ae call_function + 448
24 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
25 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
26 org.python.python 0x000000010a4c87ae call_function + 448
27 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
28 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
29 org.python.python 0x000000010a4c985e
_PyFunction_FastCallDict + 444
30 org.python.python 0x000000010a42c4d9
_PyObject_FastCallDict + 196
31 org.python.python 0x000000010a42c5fc
_PyObject_Call_Prepend + 156
32 org.python.python 0x000000010a42c35a PyObject_Call + 101
33 org.python.python 0x000000010a4c1825
_PyEval_EvalFrameDefault + 5603
34 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
35 org.python.python 0x000000010a4c0207 PyEval_EvalCodeEx +
52
36 org.python.python 0x000000010a44c493 function_call + 338
37 org.python.python 0x000000010a42c35a PyObject_Call + 101
38 org.python.python 0x000000010a4c1825
_PyEval_EvalFrameDefault + 5603
39 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
40 org.python.python 0x000000010a4c9693 fast_function + 227
41 org.python.python 0x000000010a4c87ae call_function + 448
42 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
43 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
44 org.python.python 0x000000010a4c0207 PyEval_EvalCodeEx +
52
45 org.python.python 0x000000010a44c493 function_call + 338
46 org.python.python 0x000000010a42c35a PyObject_Call + 101
47 org.python.python 0x000000010a4c1825
_PyEval_EvalFrameDefault + 5603
48 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
49 org.python.python 0x000000010a4c0207 PyEval_EvalCodeEx +
52
50 org.python.python 0x000000010a44c493 function_call + 338
51 org.python.python 0x000000010a42c35a PyObject_Call + 101
52 org.python.python 0x000000010a4c1825
_PyEval_EvalFrameDefault + 5603
53 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
54 org.python.python 0x000000010a4c87ae call_function + 448
55 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
56 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
57 org.python.python 0x000000010a4c87ae call_function + 448
58 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
59 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
60 org.python.python 0x000000010a4c87ae call_function + 448
61 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
62 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
63 org.python.python 0x000000010a42c4d9
_PyObject_FastCallDict + 196
64 org.python.python 0x000000010a42c5fc
_PyObject_Call_Prepend + 156
65 org.python.python 0x000000010a42c35a PyObject_Call + 101
66 org.python.python 0x000000010a477052 slot_tp_init + 57
67 org.python.python 0x000000010a474072 type_call + 184
68 org.python.python 0x000000010a42c4a4
_PyObject_FastCallDict + 143
69 org.python.python 0x000000010a4c87a7 call_function + 441
70 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
71 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
72 org.python.python 0x000000010a4c87ae call_function + 448
73 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
74 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
75 org.python.python 0x000000010a4c87ae call_function + 448
76 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
77 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
78 org.python.python 0x000000010a4c87ae call_function + 448
79 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
80 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
81 org.python.python 0x000000010a4c985e
_PyFunction_FastCallDict + 444
82 org.python.python 0x000000010a42c4d9
_PyObject_FastCallDict + 196
83 org.python.python 0x000000010a42c5fc
_PyObject_Call_Prepend + 156
84 org.python.python 0x000000010a42c35a PyObject_Call + 101
85 org.python.python 0x000000010a477052 slot_tp_init + 57
86 org.python.python 0x000000010a474072 type_call + 184
87 org.python.python 0x000000010a42c4a4
_PyObject_FastCallDict + 143
88 org.python.python 0x000000010a42c84a
_PyObject_FastCallKeywords + 97
89 org.python.python 0x000000010a4c87a7 call_function + 441
90 org.python.python 0x000000010a4c1665
_PyEval_EvalFrameDefault + 5155
91 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
92 org.python.python 0x000000010a4c9693 fast_function + 227
93 org.python.python 0x000000010a4c87ae call_function + 448
94 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
95 org.python.python 0x000000010a4c992e _PyFunction_FastCall
+ 121
96 org.python.python 0x000000010a4c87ae call_function + 448
97 org.python.python 0x000000010a4c15ca
_PyEval_EvalFrameDefault + 5000
98 org.python.python 0x000000010a4c8fa7
_PyEval_EvalCodeWithName + 1829
99 org.python.python 0x000000010a4c01cd PyEval_EvalCode + 43
100 org.python.python 0x000000010a4e7896 run_mod + 54
101 org.python.python 0x000000010a4e7b76 PyRun_FileExFlags +
180
102 org.python.python 0x000000010a4e7103
PyRun_SimpleFileExFlags + 280
103 org.python.python 0x000000010a4fad40 Py_Main + 3268
104 org.python.python 0x000000010a41fe1d 0x10a41e000 + 7709
105 libdyld.dylib 0x00007fffab27c255 start + 1
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x00007fff557dddf0 rbx: 0x00007fb62371bda0 rcx: 0x0030000000000203
rdx: 0x00007fff557dde20
rdi: 0x000000010b692830 rsi: 0x00007fb62371bda0 rbp: 0x00007fff557ddd90
rsp: 0x00007fff557ddd58
r8: 0x0000000000000001 r9: 0x0000000000000048 r10: 0x00000000ffffffff
r11: 0xffffffffb8e7ea1f
r12: 0x00007fffb40ccf58 r13: 0x00007fffab4bb61e r14: 0x00007fff557dde20
r15: 0x00007fb62371bdb0
rip: 0x00007fffab4bb622 rfl: 0x0000000000010206 cr2: 0x000000010b692832
Logical CPU: 1
Error Code: 0x00000004
Trap Number: 14
Binary Images:
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0x7fffab2b1000 - 0x7fffab33efef libsystem_c.dylib (1158.30.7)
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/usr/lib/system/libsystem_configuration.dylib
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External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 871
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=139.6M resident=0K(0%)
swapped_out_or_unallocated=139.6M(100%)
Writable regions: Total=76.8M written=0K(0%) resident=0K(0%) swapped_out=0K(0%)
unallocated=76.8M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Activity Tracing 256K 2
Dispatch continuations 8192K 2
Kernel Alloc Once 8K 2
MALLOC 40.7M 14
MALLOC guard page 16K 4
MALLOC_LARGE (reserved) 128K 2 reserved VM address
space (unallocated)
STACK GUARD 4K 2
Stack 17.5M 5
Stack Guard 12K 4
VM_ALLOCATE 10.0M 25
__DATA 4416K 100
__LINKEDIT 112.5M 39
__TEXT 27.1M 99
__UNICODE 556K 2
shared memory 44K 5
=========== ======= =======
TOTAL 221.1M 292
TOTAL, minus reserved VM space 221.0M 292
Model: MacBookPro12,1, BootROM MBP121.0167.B21, 2 processors, Intel Core i5,
2,9 GHz, 16 GB, SMC 2.28f7
Graphics: Intel Iris Graphics 6100, Intel Iris Graphics 6100, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1867 MHz, 0x02FE,
0x4544464232333241314D412D4A442D460000
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1867 MHz, 0x02FE,
0x4544464232333241314D412D4A442D460000
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x133), Broadcom
BCM43xx 1.0 (7.21.171.68.1a5)
Bluetooth: Version 5.0.3f1, 3 services, 17 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SM0512G, 500,28 GB
USB Device: USB 3.0 Bus
USB Device: Hub
USB Device: Hub
USB Device: Bluetooth USB Host Controller
USB Device: Hub
USB Device: Microsoft USB Optical Mouse
USB Device: USB2.0 Hub
USB Device: daskeyboard
USB Device: Hub
Thunderbolt Bus: MacBook Pro, Apple Inc., 27.1
----------
components: macOS
files: request_multiprocessing_crash.py
messages: 293849
nosy: gromgull, ned.deily, ronaldoussoren
priority: normal
severity: normal
status: open
title: Segfault on OSX with 3.6.1
type: crash
versions: Python 3.6
Added file: http://bugs.python.org/file46868/request_multiprocessing_crash.py
_______________________________________
Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue30385>
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