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Segmentation fault on pyproj.transform #8

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fitnr opened this issue Apr 1, 2015 · 4 comments
Closed

Segmentation fault on pyproj.transform #8

fitnr opened this issue Apr 1, 2015 · 4 comments

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@fitnr
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fitnr commented Apr 1, 2015

pyproj.transform results in a segementation fault if the second parameter isn't a Proj instance. (If the first argument is invalid, it raises an AttributeError, which is a much better behavior).
This is on OS X Yosemite.

Python 2.7.6 (default, Sep  9 2014, 15:04:36) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.39)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyproj
>>> p = pyproj.Proj(init='epsg:4269')
>>> pyproj.transform(None, p, -74, 39)
...
AttributeError: 'NoneType' object has no attribute 'is_latlong'
>>> pyproj.transform(p, None, -74, 39)
Segmentation fault: 11

I'd be happy to provide more info, but I don't know where to look on OS X.
@phobson
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phobson commented Apr 8, 2015

@fitnr can you use pip to install the faulthandler library and modify your example above to include:

import pyproj
import faulthandler
faulthandler.enable()

p = ...

It should thin print out a traceback all the way into the C-code or at least to the python/cython that's triggering the segfault.

@fitnr
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fitnr commented Apr 9, 2015

I reran the above code with faulthandler. Python printed the following

Fatal Python error: Segmentation fault
Current thread 0x00007fff733cb300 (most recent call first):
  File "/usr/local/lib/python2.7/site-packages/pyproj/__init__.py", line 487 in transform
  File "<stdin>", line 1 in <module>
Segmentation fault: 11

Then Python crashed, with this error report:

Process:               Python [4680]
Path:                  /usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Identifier:            Python
Version:               2.7.9 (2.7.9)
Code Type:             X86-64 (Native)
Parent Process:        bash [4581]
Responsible:           Terminal [420]
User ID:               501

Date/Time:             2015-04-09 10:27:01.006 -0400
OS Version:            Mac OS X 10.10.3 (14D131)
Report Version:        11
Anonymous UUID:        0D82E581-6AF1-D331-544D-82D82E165FD4

Sleep/Wake UUID:       67DD0773-8B66-4BF6-BCB8-862F8527BC90

Time Awake Since Boot: 7200 seconds
Time Since Wake:       3500 seconds

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000003

VM Regions Near 0x3:
--> 
    __TEXT                 00000001032c8000-00000001032ca000 [    8K] r-x/rwx SM=COW  /usr/local/Cellar/python/2.7.9/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib          0x00007fff8da26c82 __kill + 10
1   ???                             000000000000000000 0 + 0
2   _proj.so                        0x00000001036daf91 __pyx_pw_5_proj_5_transform + 1777
3   org.python.python               0x00000001033567e6 PyEval_EvalFrameEx + 14392
4   org.python.python               0x0000000103352d7a PyEval_EvalCodeEx + 1409
5   org.python.python               0x000000010335959d fast_function + 117
6   org.python.python               0x0000000103356400 PyEval_EvalFrameEx + 13394
7   org.python.python               0x0000000103352d7a PyEval_EvalCodeEx + 1409
8   org.python.python               0x00000001033527f3 PyEval_EvalCode + 54
9   org.python.python               0x00000001033728a2 run_mod + 53
10  org.python.python               0x00000001033726be PyRun_InteractiveOneFlags + 353
11  org.python.python               0x00000001033721cd PyRun_InteractiveLoopFlags + 192
12  org.python.python               0x0000000103372077 PyRun_AnyFileExFlags + 60
13  org.python.python               0x0000000103383c5b Py_Main + 3051
14  libdyld.dylib                   0x00007fff8f4b55c9 start + 1

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x000000010374cf48  rcx: 0x000000010374caa8  rdx: 0x0000000000000000
  rdi: 0x0000000000001248  rsi: 0x000000000000000b  rbp: 0x000000010374cab0  rsp: 0x000000010374caa8
   r8: 0x000000010374c9a0   r9: 0x00007f944951cd10  r10: 0x00007fff8da28c22  r11: 0x0000000000000202
  r12: 0x00007f944951cd10  r13: 0x00007f944942bd10  r14: 0x0000000000000000  r15: 0x00007f944951cd10
  rip: 0x00007fff8da26c82  rfl: 0x0000000000000202  cr2: 0x000000010374cf48

Logical CPU:     0
Error Code:      0x02000025
Trap Number:     133


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@micahcochran micahcochran mentioned this issue Oct 1, 2015
Merged
jswhit added a commit that referenced this issue Oct 8, 2015
@jswhit
Merge pull request #20 from micahcochran/patch-1
7242331 
Patch for transform to resolve Issue #8
@micahcochran
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The patch I submitted will now raise a TypeError when either projection is not a instance of the Proj class. I hope this resolves this issue.

Thanks for merging this patch, Jeff!

@micahcochran
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I assume that this issue can be closed.

The fix released with version 1.9.5.1 on January 6, 2016. The fix created another issue.

@fitnr fitnr closed this as completed Apr 12, 2016
@Scolymus Scolymus mentioned this issue Aug 17, 2022
Closed
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@fitnr @phobson @micahcochran