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Segfault when plasma client goes out of scope before buffer. #15701

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Segfault when plasma client goes out of scope before buffer.#15701
Assignees
pcmoritz
Labels
Component: C++ - PlasmaComponent: PythonType: enhancement
Milestone
0.10.0

Description

@asfimport
asfimport
opened on Apr 11, 2018

The following causes a segfault.

First start a plasma store with

plasma_store -s /tmp/store -m10000000000

Then run the following in Python.

importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.

The backtrace is 

(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1

Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.

Reporter: Robert Nishihara / @robertnishihara
Assignee: Philipp Moritz / @pcmoritz

Related issues:

PRs and other links:

Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.

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Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
    Skip to content
    Segfault when plasma client goes out of scope before buffer. #15701
    Closed
    Closed
    Segfault when plasma client goes out of scope before buffer.#15701
    Assignees
    pcmoritz
    Labels
    Component: C++ - PlasmaComponent: PythonType: enhancement
    Milestone
    0.10.0
    Description
    @asfimport
    asfimport
    opened on Apr 11, 2018
    The following causes a segfault.
    First start a plasma store with
    plasma_store -s /tmp/store -m10000000000
    Then run the following in Python.
    importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
    The backtrace is 
    (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
    Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
    Reporter: Robert Nishihara / @robertnishihara
    Assignee: Philipp Moritz / @pcmoritz
    Related issues:
    PRs and other links:
    Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
    Metadata
    Metadata
    Assignees
    Labels
    Component: C++ - PlasmaComponent: PythonType: enhancement
    Type
    No type
    Projects
    No projects
      Milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
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var style = document.createElement('style');
style.textContent = '
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color-scheme: dark light;
}
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
      Skip to content
      Segfault when plasma client goes out of scope before buffer. #15701
      Closed
      Closed
      Segfault when plasma client goes out of scope before buffer.#15701
      Assignees
      pcmoritz
      Labels
      Component: C++ - PlasmaComponent: PythonType: enhancement
      Milestone
      0.10.0
      Description
      @asfimport
      asfimport
      opened on Apr 11, 2018
      The following causes a segfault.
      First start a plasma store with
      plasma_store -s /tmp/store -m10000000000
      Then run the following in Python.
      importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
      The backtrace is 
      (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
      Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
      Reporter: Robert Nishihara / @robertnishihara
      Assignee: Philipp Moritz / @pcmoritz
      Related issues:
      PRs and other links:
      Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
      Metadata
      Metadata
      Assignees
      Labels
      Component: C++ - PlasmaComponent: PythonType: enhancement
      Type
      No type
      Projects
      No projects
        Milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
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} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
        Skip to content
        Segfault when plasma client goes out of scope before buffer. #15701
        Closed
        Closed
        Segfault when plasma client goes out of scope before buffer.#15701
        Assignees
        pcmoritz
        Labels
        Component: C++ - PlasmaComponent: PythonType: enhancement
        Milestone
        0.10.0
        Description
        @asfimport
        asfimport
        opened on Apr 11, 2018
        The following causes a segfault.
        First start a plasma store with
        plasma_store -s /tmp/store -m10000000000
        Then run the following in Python.
        importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
        The backtrace is 
        (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
        Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
        Reporter: Robert Nishihara / @robertnishihara
        Assignee: Philipp Moritz / @pcmoritz
        Related issues:
        PRs and other links:
        Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
        Metadata
        Metadata
        Assignees
        Labels
        Component: C++ - PlasmaComponent: PythonType: enhancement
        Type
        No type
        Projects
        No projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
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try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
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return url;
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document.querySelectorAll('a[href]').forEach(function(a) {
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(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
          Skip to content
          Segfault when plasma client goes out of scope before buffer. #15701
          Closed
          Closed
          Segfault when plasma client goes out of scope before buffer.#15701
          Assignees
          pcmoritz
          Labels
          Component: C++ - PlasmaComponent: PythonType: enhancement
          Milestone
          0.10.0
          Description
          @asfimport
          asfimport
          opened on Apr 11, 2018
          The following causes a segfault.
          First start a plasma store with
          plasma_store -s /tmp/store -m10000000000
          Then run the following in Python.
          importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
          The backtrace is 
          (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
          Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
          Reporter: Robert Nishihara / @robertnishihara
          Assignee: Philipp Moritz / @pcmoritz
          Related issues:
          PRs and other links:
          Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
          Metadata
          Metadata
          Assignees
          Labels
          Component: C++ - PlasmaComponent: PythonType: enhancement
          Type
          No type
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          No projects
            Milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
            Skip to content
            Segfault when plasma client goes out of scope before buffer. #15701
            Closed
            Closed
            Segfault when plasma client goes out of scope before buffer.#15701
            Assignees
            pcmoritz
            Labels
            Component: C++ - PlasmaComponent: PythonType: enhancement
            Milestone
            0.10.0
            Description
            @asfimport
            asfimport
            opened on Apr 11, 2018
            The following causes a segfault.
            First start a plasma store with
            plasma_store -s /tmp/store -m10000000000
            Then run the following in Python.
            importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
            The backtrace is 
            (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
            Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
            Reporter: Robert Nishihara / @robertnishihara
            Assignee: Philipp Moritz / @pcmoritz
            Related issues:
            PRs and other links:
            Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
            Metadata
            Metadata
            Assignees
            Labels
            Component: C++ - PlasmaComponent: PythonType: enhancement
            Type
            No type
            Projects
            No projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
              Skip to content
              Segfault when plasma client goes out of scope before buffer. #15701
              Closed
              Closed
              Segfault when plasma client goes out of scope before buffer.#15701
              Assignees
              pcmoritz
              Labels
              Component: C++ - PlasmaComponent: PythonType: enhancement
              Milestone
              0.10.0
              Description
              @asfimport
              asfimport
              opened on Apr 11, 2018
              The following causes a segfault.
              First start a plasma store with
              plasma_store -s /tmp/store -m10000000000
              Then run the following in Python.
              importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
              The backtrace is 
              (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
              Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
              Reporter: Robert Nishihara / @robertnishihara
              Assignee: Philipp Moritz / @pcmoritz
              Related issues:
              PRs and other links:
              Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
              Metadata
              Metadata
              Assignees
              Labels
              Component: C++ - PlasmaComponent: PythonType: enhancement
              Type
              No type
              Projects
              No projects
                Milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Segfault when plasma client goes out of scope before buffer. · Issue #15701 · apache/arrow · GitHub
                Skip to content
                Segfault when plasma client goes out of scope before buffer. #15701
                Closed
                Closed
                Segfault when plasma client goes out of scope before buffer.#15701
                Assignees
                pcmoritz
                Labels
                Component: C++ - PlasmaComponent: PythonType: enhancement
                Milestone
                0.10.0
                Description
                @asfimport
                asfimport
                opened on Apr 11, 2018
                The following causes a segfault.
                First start a plasma store with
                plasma_store -s /tmp/store -m10000000000
                Then run the following in Python.
                importpyarrow.plasmaasplasmaimportnumpyasnpclient = plasma.connect('/tmp/store', '', 0)
object_id = client.put(np.zeros(3))
buf = client.get(object_id)
delclientdelbuf # Thissegfaults.
                The backtrace is 
                (lldb) bt
* thread #1, queue = 'com.apple.main-thread', stopreason = EXC_BAD_ACCESS (code=1, address=0xfffffffffffffffc)
* frame #0: 0x00000001056deaeelibplasma.0.dylib`plasma::PlasmaClient::Release(plasma::UniqueIDconst&) + 142frame #1: 0x00000001056de9e9libplasma.0.dylib`plasma::PlasmaBuffer::~PlasmaBuffer() + 41frame #2: 0x00000001056dec9flibplasma.0.dylib`arrow::Buffer::~Buffer() + 63frame #3: 0x0000000106206661lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_count::__release_shared(this=0x00000001019b7d20) atmemory:3444frame #4: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr() [inlined] std::__1::__shared_weak_count::__release_shared(this=0x00000001019b7d20) atmemory:3486frame #5: 0x0000000106206617lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4412frame #6: 0x0000000106002b35lib.cpython-36m-darwin.so`std::__1::shared_ptr<arrow::Buffer>::~shared_ptr(this=0x0000000100791780) atmemory:4410frame #7: 0x00000001061052c5lib.cpython-36m-darwin.so`void__Pyx_call_destructor<std::__1::shared_ptr<arrow::Buffer> >(x=std::__1::shared_ptr<arrow::Buffer>::element_type@0x00000001019b7d38strong=0weak=1) atlib.cxx:486frame #8: 0x0000000106104f93lib.cpython-36m-darwin.so`__pyx_tp_dealloc_7pyarrow_3lib_Buffer(o=0x0000000100791768) atlib.cxx:107704frame #9: 0x00000001069fcd54multiarray.cpython-36m-darwin.so`array_dealloc + 292frame #10: 0x00000001000e8daflibpython3.6m.dylib`_PyDict_DelItem_KnownHash + 463frame #11: 0x0000000100171899libpython3.6m.dylib`_PyEval_EvalFrameDefault + 13321frame #12: 0x00000001001791eflibpython3.6m.dylib`_PyEval_EvalCodeWithName + 2447frame #13: 0x000000010016e3d4libpython3.6m.dylib`PyEval_EvalCode + 100frame #14: 0x00000001001a3bd6libpython3.6m.dylib`PyRun_InteractiveOneObject + 582frame #15: 0x00000001001a350elibpython3.6m.dylib`PyRun_InteractiveLoopFlags + 222frame #16: 0x00000001001a33fclibpython3.6m.dylib`PyRun_AnyFileExFlags + 60frame #17: 0x00000001001bc835libpython3.6m.dylib`Py_Main + 3829frame #18: 0x0000000100000df8python`main + 232frame #19: 0x00007fff6cd80015libdyld.dylib`start + 1frame #20: 0x00007fff6cd80015libdyld.dylib`start + 1
                Basically, the issue is that when the buffer goes out of scope, it calls Release on the plasma client, but the client has already been deallocated.
                Reporter: Robert Nishihara / @robertnishihara
                Assignee: Philipp Moritz / @pcmoritz
                Related issues:
                PRs and other links:
                Note: This issue was originally created as ARROW-2448. Please see the migration documentation for further details.
                Metadata
                Metadata
                Assignees
                Labels
                Component: C++ - PlasmaComponent: PythonType: enhancement
                Type
                No type
                Projects
                No projects
                  Milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions