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Segfault in DownloadItem.origin() #7854

Closed
The-Compiler opened this issue Aug 22, 2023 · 5 comments
Closed

Segfault in DownloadItem.origin() #7854

The-Compiler opened this issue Aug 22, 2023 · 5 comments
Labels
bug: segfault/crash/hang There's a low-level crash in C++, or a hang/freeze. component: downloads Issues related to downloads. component: QtWebEngine Issues related to the QtWebEngine backend, based on Chromium. priority: 1 - middle Issues which should be done at some point, but aren't that important. qt Issues related to the Qt framework. qt: 6 Issues related to Qt 6.

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@The-Compiler
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The-Compiler commented Aug 22, 2023 •
edited

Version info:

qutebrowser v3.0.0
Git commit: 
Backend: QtWebEngine 6.5.2, based on Chromium 108.0.5359.220 (from api)
Qt: 6.5.2

Does the bug happen if you start with --temp-basedir?: unknown

Description

Fatal Python error: Segmentation fault

Current thread 0x000000011bac4600 (most recent call first):
  File "qutebrowser/browser/webengine/webenginedownloads.py", line 126 in origin
  File "qutebrowser/browser/downloads.py", line 820 in cancel_for_origin
  File "qutebrowser/browser/webengine/webenginedownloads.py", line 298 in handle_download
  File "qutebrowser/app.py", line 125 in qt_mainloop
  File "qutebrowser/app.py", line 115 in run
  File "qutebrowser/qutebrowser.py", line 231 in main
  File "qutebrowser/__main__.py", line 15 in <module>

That is here:

qutebrowser/qutebrowser/browser/webengine/webenginedownloads.py

Lines 125 to 127 in 8c2e23d

def origin(self) -> QUrl:
page = self._qt_item.page()
return page.url() if page else QUrl()

Reports: 169273992283.3258.13604852731635742755@crashes.qutebrowser.org and 169270650979.3258.6134579206996944692@crashes.qutebrowser.org

How to reproduce

Unknown, possibly retrying a download. @theitalianweeb do you know how to reproduce it? If you can, I think you should get a macOS crash dialog? If that happens, can you show the details and copy them here (instead of sending it to Apple)?
@The-Compiler The-Compiler added qt Issues related to the Qt framework. component: downloads Issues related to downloads. priority: 1 - middle Issues which should be done at some point, but aren't that important. component: QtWebEngine Issues related to the QtWebEngine backend, based on Chromium. bug: segfault/crash/hang There's a low-level crash in C++, or a hang/freeze. qt: 6 Issues related to Qt 6. labels Aug 22, 2023
@The-Compiler The-Compiler added this to the v3.0.1 milestone Aug 22, 2023
@theitalianweeb
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Honestly I don't remember seeing any MacOS crash dialog, and if it did, I must have dismissed it. I can help you if you know a place where MacOS stores past crash logs. If memory serves me right, though, I was downloading the file, then I stopped using the laptop and closed it, so that's maybe why the download failed. If it's pertinent to the crash, I don't know, but I still wrote it in case it's helpful

@emanuele6
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@The-Compiler asked me to post the coredump info of the crash here. I got a segfault today after doing "Right Click" -> "Retry" on a failed download (due to insufficient disk space); qutebrowser started not responding for a bit, and then it crashed:
coredumpctl info 972774

           PID: 972774 (qutebrowser)
           UID: 1000 (emanuele6)
           GID: 998 (wheel)
        Signal: 11 (SEGV)
     Timestamp: Mon 2023-09-04 12:40:10 CEST (8h ago)
  Command Line: /usr/bin/python3 /usr/bin/qutebrowser
    Executable: /usr/bin/python3.11
 Control Group: /user.slice/user-1000.slice/session-4.scope
          Unit: session-4.scope
         Slice: user-1000.slice
       Session: 4
     Owner UID: 1000 (emanuele6)
       Boot ID: a7fc0c45953a44c08fd1223b070e251c
    Machine ID: f714a39033a14ee5ba3c6d33fd02dad8
      Hostname: t420
       Storage: /var/lib/systemd/coredump/core.qutebrowser.1000.a7fc0c45953a44c08fd1223b070e251c.972774.1693824010000000.zst (present)
  Size on Disk: 156.2M
       Message: Process 972774 (qutebrowser) of user 1000 dumped core.
                
                Stack trace of thread 972774:
                #0  0x00007fcf5e88e83c n/a (libc.so.6 + 0x8e83c)
                #1  0x00007fcf5e83e668 raise (libc.so.6 + 0x3e668)
                #2  0x00007fcf5e83e710 n/a (libc.so.6 + 0x3e710)
                #3  0x00007fcf50d453e7 _ZNK25QWebEngineDownloadRequest4pageEv (libQt6WebEngineCore.so.6 + 0x41453e7)
                #4  0x00007fcf3da26450 n/a (QtWebEngineCore.abi3.so + 0x3a450)
                #5  0x00007fcf5edfada8 n/a (libpython3.11.so.1.0 + 0x1fada8)
                #6  0x00007fcf5edda04c _PyObject_MakeTpCall (libpython3.11.so.1.0 + 0x1da04c)
                #7  0x00007fcf5ede44c9 _PyEval_EvalFrameDefault (libpython3.11.so.1.0 + 0x1e44c9)
                #8  0x00007fcf5ee2cb73 n/a (libpython3.11.so.1.0 + 0x22cb73)
                #9  0x00007fcf5ee2c05e n/a (libpython3.11.so.1.0 + 0x22c05e)
                #10 0x00007fcf5cffcd21 n/a (QtCore.abi3.so + 0x1fcd21)
                #11 0x00007fcf5d004f00 n/a (QtCore.abi3.so + 0x204f00)
                #12 0x00007fcf5cfea821 n/a (QtCore.abi3.so + 0x1ea821)
                #13 0x00007fcf5c99140d n/a (libQt6Core.so.6 + 0x19140d)
                #14 0x00007fcf50d61978 _ZN24QWebEngineProfilePrivate17downloadRequestedERN15QtWebEngineCore20ProfileAdapterClient16DownloadItemInfoE (libQt6WebEngineCore.so.6 + 0x4161978)
                #15 0x00007fcf4d72ad95 n/a (libQt6WebEngineCore.so.6 + 0xb2ad95)
                #16 0x00007fcf4f9fe40b n/a (libQt6WebEngineCore.so.6 + 0x2dfe40b)
                #17 0x00007fcf4f602c3f n/a (libQt6WebEngineCore.so.6 + 0x2a02c3f)
                #18 0x00007fcf4f60fb71 n/a (libQt6WebEngineCore.so.6 + 0x2a0fb71)
                #19 0x00007fcf4f60ffde n/a (libQt6WebEngineCore.so.6 + 0x2a0ffde)
                #20 0x00007fcf4f5fb9f5 n/a (libQt6WebEngineCore.so.6 + 0x29fb9f5)
                #21 0x00007fcf50de236d n/a (libQt6WebEngineCore.so.6 + 0x41e236d)
                #22 0x00007fcf50dfb707 n/a (libQt6WebEngineCore.so.6 + 0x41fb707)
                #23 0x00007fcf50dfc0d6 n/a (libQt6WebEngineCore.so.6 + 0x41fc0d6)
                #24 0x00007fcf4d6f9cb2 n/a (libQt6WebEngineCore.so.6 + 0xaf9cb2)
                #25 0x00007fcf5c97d0b6 _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x17d0b6)
                #26 0x00007fcf5897136b _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0x17136b)
                #27 0x00007fcf5935e9c7 n/a (QtWidgets.abi3.so + 0x35e9c7)
                #28 0x00007fcf5c93b718 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x13b718)
                #29 0x00007fcf5c93ba9b _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x13ba9b)
                #30 0x00007fcf5cb34854 n/a (libQt6Core.so.6 + 0x334854)
                #31 0x00007fcf5d4e5a31 n/a (/usr/lib/libglib-2.0.so.0.7600.4 (deleted) + 0x5aa31)
                ELF object binary architecture: AMD x86-64

coredumpctl gdb 972774:

[Current thread is 1 (Thread 0x7fcf5f24d740 (LWP 972774))]
(gdb) bt
#0  0x00007fcf5e88e83c in  () at /usr/lib/libc.so.6                                                                                                                       
#1  0x00007fcf5e83e668 in raise () at /usr/lib/libc.so.6                                                                                                                  
#2  0x00007fcf5e83e710 in <signal handler called> () at /usr/lib/libc.so.6                                                                                                
#3  0x00007fcf50d453e7 in QWebEngineDownloadRequest::page() const () at /usr/lib/libQt6WebEngineCore.so.6                                                                 
#4  0x00007fcf3da26450 in  () at /usr/lib/python3.11/site-packages/PyQt6/QtWebEngineCore.abi3.so                                                                          
#5  0x00007fcf5edfada8 in  () at /usr/lib/libpython3.11.so.1.0                                                                                                            
#6  0x00007fcf5edda04c in _PyObject_MakeTpCall () at /usr/lib/libpython3.11.so.1.0                                                                                        
#7  0x00007fcf5ede44c9 in _PyEval_EvalFrameDefault () at /usr/lib/libpython3.11.so.1.0                                                                                    
#8  0x00007fcf5ee2cb73 in  () at /usr/lib/libpython3.11.so.1.0                                                                                                            
#9  0x00007fcf5ee2c05e in  () at /usr/lib/libpython3.11.so.1.0                                                                                                            
#10 0x00007fcf5cffcd21 in  () at /usr/lib/python3.11/site-packages/PyQt6/QtCore.abi3.so                                                                                   
#11 0x00007fcf5d004f00 in  () at /usr/lib/python3.11/site-packages/PyQt6/QtCore.abi3.so                                                                                   
#12 0x00007fcf5cfea821 in  () at /usr/lib/python3.11/site-packages/PyQt6/QtCore.abi3.so                                                                                   
#13 0x00007fcf5c99140d in  () at /usr/lib/libQt6Core.so.6                                                                                                                 
#14 0x00007fcf50d61978 in QWebEngineProfilePrivate::downloadRequested(QtWebEngineCore::ProfileAdapterClient::DownloadItemInfo&) () at /usr/lib/libQt6WebEngineCore.so.6   
#15 0x00007fcf4d72ad95 in  () at /usr/lib/libQt6WebEngineCore.so.6                                                                                                        
#16 0xffffffff00000002 in  ()                                                                                                                                             
#17 0x00007ffd9a680e58 in  ()                                                                                                                                             
#18 0x0000000000000000 in  ()

@emanuele6
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@The-Compiler

bt full in coredumpctl gdb with debuginfod enabled

Core was generated by `/usr/bin/python3 /usr/bin/qutebrowser'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
Downloading source file /usr/src/debug/glibc/glibc/nptl/pthread_kill.c
44            return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
[Current thread is 1 (Thread 0x7fcf5f24d740 (LWP 972774))]
(gdb) bt full
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44
        tid = <optimized out>
        ret = 0
        pd = <optimized out>
        old_mask = {__val = {0}}
        ret = <optimized out>
#1  0x00007fcf5e88e8a3 in __pthread_kill_internal (signo=11, threadid=<optimized out>) at pthread_kill.c:78
#2  0x00007fcf5e83e668 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#3  0x00007fcf5e83e710 in <signal handler called> () at /usr/lib/libc.so.6
#4  0x00007fcf50d453e7 in QWebEngineDownloadRequest::page() const (this=<optimized out>)
    at /usr/src/debug/qt6-webengine/qtwebengine-everywhere-src-6.5.2/src/core/api/qwebenginedownloadrequest.cpp:604
#5  0x00007fcf3da26450 in meth_QWebEngineDownloadRequest_page(PyObject*, PyObject*) (sipSelf=<optimized out>, sipArgs=<optimized out>)
    at /usr/src/debug/pyqt6-webengine/PyQt6_WebEngine-6.5.0/build/QtWebEngineCore/sipQtWebEngineCoreQWebEngineDownloadRequest.cpp:545
        sipRes = <optimized out>
        sipCpp = 0x7fceec2c6820
        sipParseErr = 0x0
#6  0x00007fcf5edfada8 in cfunction_call (func=0x7fcf0d64d850, args=<optimized out>, kwargs=<optimized out>) at Objects/methodobject.c:553
        tstate = 0x7fcf5f189b78 <_PyRuntime+166328>
        flags = <optimized out>
        meth = <optimized out>
        self = <optimized out>
        result = <optimized out>
#7  0x00007fcf5edda04c in _PyObject_MakeTpCall (tstate=0x7fcf5f189b78 <_PyRuntime+166328>, callable=0x7fcf0d64d850, args=<optimized out>, nargs=0, keywords=0x0)
    at Objects/call.c:214
        call = <optimized out>
        argstuple = <optimized out>
        kwdict = 0x0
        result = 0x0
#8  0x00007fcf5ede44c9 in _PyEval_EvalFrameDefault (tstate=<optimized out>, frame=<optimized out>, throwflag=<optimized out>) at Python/ceval.c:4774
        is_meth = 0
        total_args = 0
        function = 0x7fcf0d64d850
        res = <optimized out>
        opcode = <optimized out>
        oparg = <optimized out>
        eval_breaker = <optimized out>
        cframe = {use_tracing = 0 '\000', current_frame = 0x7fcf5f346378, previous = 0x7ffd9a681c70}
        call_shape = {kwnames = 0x0}
        prev_cframe = <optimized out>
        names = <optimized out>
        consts = <optimized out>
        first_instr = <optimized out>
        next_instr = 0x7fcf3d2e9152
        stack_pointer = <optimized out>
--Type <RET> for more, q to quit, c to continue without paging--c
        dying = <optimized out>
        __func__ = "_PyEval_EvalFrameDefault"
        opcode_targets = {0x7fcf5ecfe0f7 <_PyEval_EvalFrameDefault-941177>, 0x7fcf5ede4733 <_PyEval_EvalFrameDefault+2499>, 0x7fcf5ede4390 <_PyEval_EvalFrameDefault+1568>, 0x7fcf5ede6958 <_PyEval_EvalFrameDefault+11240>, 0x7fcf5ede7577 <_PyEval_EvalFrameDefault+14343>, 0x7fcf5ede57cd <_PyEval_EvalFrameDefault+6749>, 0x7fcf5ede7998 <_PyEval_EvalFrameDefault+15400>, 0x7fcf5ede8f48 <_PyEval_EvalFrameDefault+20952>, 0x7fcf5ede4edf <_PyEval_EvalFrameDefault+4463>, 0x7fcf5ede5c24 <_PyEval_EvalFrameDefault+7860>, 0x7fcf5ede9339 <_PyEval_EvalFrameDefault+21961>, 0x7fcf5ede856b <_PyEval_EvalFrameDefault+18427>, 0x7fcf5ede8c48 <_PyEval_EvalFrameDefault+20184>, 0x7fcf5ede655f <_PyEval_EvalFrameDefault+10223>, 0x7fcf5ede6c26 <_PyEval_EvalFrameDefault+11958>, 0x7fcf5ede9c24 <_PyEval_EvalFrameDefault+24244>, 0x7fcf5ede5ef7 <_PyEval_EvalFrameDefault+8583>, 0x7fcf5ede4cfc <_PyEval_EvalFrameDefault+3980>, 0x7fcf5ede6b89 <_PyEval_EvalFrameDefault+11801>, 0x7fcf5ede8e10 <_PyEval_EvalFrameDefault+20640>, 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<_PyEval_EvalFrameDefault+351>, 0x7fcf5ede885f <_PyEval_EvalFrameDefault+19183>, 0x7fcf5ede6477 <_PyEval_EvalFrameDefault+9991>, 0x7fcf5ede6ed0 <_PyEval_EvalFrameDefault+12640>, 0x7fcf5ede9465 <_PyEval_EvalFrameDefault+22261>, 0x7fcf5ede6ad1 <_PyEval_EvalFrameDefault+11617>, 0x7fcf5ede7dec <_PyEval_EvalFrameDefault+16508>, 0x7fcf5ede60d1 <_PyEval_EvalFrameDefault+9057>, 0x7fcf5edea0a2 <_PyEval_EvalFrameDefault+25394>, 0x7fcf5edea020 <_PyEval_EvalFrameDefault+25264>, 0x7fcf5ede572f <_PyEval_EvalFrameDefault+6591>, 0x7fcf5ede74c5 <_PyEval_EvalFrameDefault+14165>, 0x7fcf5ede8507 <_PyEval_EvalFrameDefault+18327>, 0x7fcf5ede71d0 <_PyEval_EvalFrameDefault+13408>, 0x7fcf5ede43cc <_PyEval_EvalFrameDefault+1628>, 0x7fcf5ede49c7 <_PyEval_EvalFrameDefault+3159>, 0x7fcf5ede7a46 <_PyEval_EvalFrameDefault+15574>, 0x7fcf5ede5b5d <_PyEval_EvalFrameDefault+7661>, 0x7fcf5ede62b4 <_PyEval_EvalFrameDefault+9540>, 0x7fcf5ede9d20 <_PyEval_EvalFrameDefault+24496>, 0x7fcf5ede604c <_PyEval_EvalFrameDefault+8924>, 0x7fcf5ede822b <_PyEval_EvalFrameDefault+17595>, 0x7fcf5ede4fc0 <_PyEval_EvalFrameDefault+4688>, 0x7fcf5ede6f3a <_PyEval_EvalFrameDefault+12746>, 0x7fcf5ede3e7f <_PyEval_EvalFrameDefault+271>, 0x7fcf5ede423e <_PyEval_EvalFrameDefault+1230>, 0x7fcf5ede9bc9 <_PyEval_EvalFrameDefault+24153>, 0x7fcf5ede9075 <_PyEval_EvalFrameDefault+21253>, 0x7fcf5ede5bd1 <_PyEval_EvalFrameDefault+7777>, 0x7fcf5ede5ea9 <_PyEval_EvalFrameDefault+8505>, 0x7fcf5ede997f <_PyEval_EvalFrameDefault+23567>, 0x7fcf5ecfd835 <_PyEval_EvalFrameDefault-943419>, 0x7fcf5ede77d9 <_PyEval_EvalFrameDefault+14953>, 0x7fcf5ede6e6c <_PyEval_EvalFrameDefault+12540>, 0x7fcf5ede7082 <_PyEval_EvalFrameDefault+13074>, 0x7fcf5ede7301 <_PyEval_EvalFrameDefault+13713>, 0x7fcf5ede80a3 <_PyEval_EvalFrameDefault+17203>, 0x7fcf5ede41ea <_PyEval_EvalFrameDefault+1146>, 0x7fcf5ede88ea <_PyEval_EvalFrameDefault+19322>, 0x7fcf5ede9b72 <_PyEval_EvalFrameDefault+24066>, 0x7fcf5ede9418 <_PyEval_EvalFrameDefault+22184>, 0x7fcf5ede5182 <_PyEval_EvalFrameDefault+5138>, 0x7fcf5ede7e9d <_PyEval_EvalFrameDefault+16685>, 0x7fcf5ede4964 <_PyEval_EvalFrameDefault+3060>, 0x7fcf5ede91c0 <_PyEval_EvalFrameDefault+21584>, 0x7fcf5ede53b4 <_PyEval_EvalFrameDefault+5700>, 0x7fcf5ede7169 <_PyEval_EvalFrameDefault+13305>, 0x7fcf5ede9134 <_PyEval_EvalFrameDefault+21444>, 0x7fcf5ede9a75 <_PyEval_EvalFrameDefault+23813>, 0x7fcf5ede4e15 <_PyEval_EvalFrameDefault+4261>, 0x7fcf5ede3f8b <_PyEval_EvalFrameDefault+539>, 0x7fcf5ede8b50 <_PyEval_EvalFrameDefault+19936>, 0x7fcf5edea3f8 <_PyEval_EvalFrameDefault+26248>, 0x7fcf5ede7c8d <_PyEval_EvalFrameDefault+16157>, 0x7fcf5ede58aa <_PyEval_EvalFrameDefault+6970>, 0x7fcf5ede7fe3 <_PyEval_EvalFrameDefault+17011>, 0x7fcf5edea556 <_PyEval_EvalFrameDefault+26598>, 0x7fcf5ede8735 <_PyEval_EvalFrameDefault+18885>, 0x7fcf5ede6638 <_PyEval_EvalFrameDefault+10440>, 0x7fcf5ede89c8 <_PyEval_EvalFrameDefault+19544>, 0x7fcf5ede7b3b <_PyEval_EvalFrameDefault+15819>, 0x7fcf5ede4067 <_PyEval_EvalFrameDefault+759>, 0x7fcf5ede958b <_PyEval_EvalFrameDefault+22555>, 0x7fcf5ede94c7 <_PyEval_EvalFrameDefault+22359>, 0x7fcf5ede8647 <_PyEval_EvalFrameDefault+18647>, 0x7fcf5ede9528 <_PyEval_EvalFrameDefault+22456>, 0x7fcf5ede6f29 <_PyEval_EvalFrameDefault+12729>, 0x7fcf5ede5416 <_PyEval_EvalFrameDefault+5798>, 0x7fcf5ede7dfd <_PyEval_EvalFrameDefault+16525>, 0x7fcf5ede6980 <_PyEval_EvalFrameDefault+11280>, 0x7fcf5ede6fd5 <_PyEval_EvalFrameDefault+12901>, 0x7fcf5ede45ad <_PyEval_EvalFrameDefault+2109>, 0x7fcf5ede6091 <_PyEval_EvalFrameDefault+8993>, 0x7fcf5ede8dc5 <_PyEval_EvalFrameDefault+20565>, 0x7fcf5ede92e9 <_PyEval_EvalFrameDefault+21881>, 0x7fcf5ede7b4c <_PyEval_EvalFrameDefault+15836>, 0x7fcf5ede893d <_PyEval_EvalFrameDefault+19405>, 0x7fcf5edea52e <_PyEval_EvalFrameDefault+26558>, 0x7fcf5ede8cac <_PyEval_EvalFrameDefault+20284>, 0x7fcf5ede73be <_PyEval_EvalFrameDefault+13902>, 0x7fcf5ede5c53 <_PyEval_EvalFrameDefault+7907>, 0x7fcf5ecff7a4 <_PyEval_EvalFrameDefault-935372> <repeats 74 times>, 0x7fcf5ede9eb9 <_PyEval_EvalFrameDefault+24905>}
#9  0x00007fcf5ee2cb73 in _PyEval_EvalFrame (throwflag=0, frame=0x7fcf5f346218, tstate=0x7fcf5f189b78 <_PyRuntime+166328>) at ./Include/internal/pycore_ceval.h:73
        frame = 0x7fcf5f346218
        retval = <optimized out>
        f = 0x7fcf3cfdea20
        nargs = <optimized out>
        tstate = 0x7fcf5f189b78 <_PyRuntime+166328>
        func = <optimized out>
        res = <optimized out>
#10 _PyEval_Vector (kwnames=<optimized out>, argcount=<optimized out>, args=0x7ffd9a6809c0, locals=0x0, func=0x7fcf3cfdea20, tstate=0x7fcf5f189b78 <_PyRuntime+166328>)
    at Python/ceval.c:6439
        frame = 0x7fcf5f346218
        retval = <optimized out>
        f = 0x7fcf3cfdea20
        nargs = <optimized out>
        tstate = 0x7fcf5f189b78 <_PyRuntime+166328>
        func = <optimized out>
        res = <optimized out>
#11 _PyFunction_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, stack=0x7ffd9a6809c0, func=0x7fcf3cfdea20) at Objects/call.c:393
        f = 0x7fcf3cfdea20
        nargs = <optimized out>
        tstate = 0x7fcf5f189b78 <_PyRuntime+166328>
        func = <optimized out>
        res = <optimized out>
#12 _PyObject_VectorcallTstate (tstate=0x7fcf5f189b78 <_PyRuntime+166328>, callable=0x7fcf3cfdea20, args=0x7ffd9a6809c0, nargsf=<optimized out>, kwnames=<optimized out>)
    at ./Include/internal/pycore_call.h:92
        func = <optimized out>
        res = <optimized out>
#13 0x00007fcf5ee2c05e in method_vectorcall (method=<optimized out>, args=0x7fcf26f12158, nargsf=<optimized out>, kwnames=0x0) at Objects/classobject.c:89
        newargs_stack = {0x7fcf24411360, 0x7fcf26967f40, 0x7ffd9a680cb0, 0x7fcf5d1057a0 <QtPrivate::QMetaTypeInterfaceWrapper<PyQt_PyObject>::metaType>, 0x27}
        newargs = 0x7ffd9a6809c0
        tstate = 0x7fcf5f189b78 <_PyRuntime+166328>
        self = 0x7fcf24411360
        func = 0x7fcf3cfdea20
        nargs = 1
        result = <optimized out>
#14 0x00007fcf5cffcd21 in PyQtSlot::call(_object*, _object*) const (this=0x558dfba2bbf0, args=0x7fcf26f12140, callable=0x7fcef072df40)
    at ../../qpy/QtCore/qpycore_pyqtslot.cpp:235
        nsa = <optimized out>
        xtype = 0x558df9bb5710
        xvalue = 0x7fcf5d0ec060 <sipTypeDef_QtCore_QObject>
        xtb = 0x7fcf3cfdea20
        res = <optimized out>
        sa = 0x7fcf26f12140
        oxtype = <optimized out>
        oxvalue = <optimized out>
        oxtb = <optimized out>
        callable = 0x7fcef072df40
        args = <optimized out>
        argtup = 0x7fcf26f12140
        it = {i = <optimized out>}
        res = <optimized out>
        ok = <optimized out>
#15 PyQtSlot::invoke(void**, _object*, void*, bool) const (this=0x558dfba2bbf0, qargs=<optimized out>, qargs@entry=0x7ffd9a680cd0, self=<optimized out>,
    self@entry=0x7fcf24411360, result=0x0, no_receiver_check=no_receiver_check@entry=false) at ../../qpy/QtCore/qpycore_pyqtslot.cpp:152
        callable = 0x7fcef072df40
        args = <optimized out>
        argtup = 0x7fcf26f12140
        it = {i = <optimized out>}
        res = <optimized out>
        ok = <optimized out>
#16 0x00007fcf5d004f00 in PyQtSlot::invoke(void**, _object*, void*) const (result=<optimized out>, self=0x7fcf24411360, qargs=0x7ffd9a680cd0, this=<optimized out>)
    at ../../qpy/QtCore/qpycore_pyqtslot.cpp:81
        slot = <optimized out>
        tp_base = <optimized out>
        qo = 0x558dfba2a610
        ok = true
#17 qt_metacall_worker(sipSimpleWrapper*, PyTypeObject*, sipTypeDef*, QMetaObject::Call, int, void**)
    (pySelf=0x7fcf24411360, pytype=0x558df9d31fe0, base=<optimized out>, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffd9a680cd0)
    at ../../qpy/QtCore/qpycore_qobject_helpers.cpp:108
        slot = <optimized out>
        tp_base = <optimized out>
        qo = 0x558dfba2a610
        ok = true
#18 0x00007fcf5cfea821 in sipQObject::qt_metacall(QMetaObject::Call, int, void**) (this=0x558dfba242f0, _c=QMetaObject::InvokeMetaMethod, _id=11, _a=0x7ffd9a680cd0)
    at /usr/src/debug/pyqt6/PyQt6-6.5.2/build/QtCore/sipQtCoreQObject.cpp:358
        sipGIL = PyGILState_UNLOCKED
#19 0x00007fcf5c99140d in doActivate<false>(QObject*, int, void**) (sender=0x558dfba2b0e0, signal_index=3, argv=0x7ffd9a680cd0)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qobject.cpp:4018
        method = <optimized out>
        receiver = 0x558dfba242f0
        td = <optimized out>
        receiverInSameThread = <optimized out>
        senderData = {previous = 0x0, receiver = 0x558dfba242f0, sender = 0x558dfba2b0e0, signal = 3}
        c = 0x558dfbc409e0
        connections = {d = 0x558dfbb10fe0}
        list = <optimized out>
        inSenderThread = <optimized out>
        highestConnectionId = <optimized out>
        signalVector = <optimized out>
        currentThreadId = <optimized out>
        sp = <optimized out>
        signal_spy_set = 0x0
        empty_argv = {0x0}
        senderDeleted = false
#20 0x00007fcf50d61978 in QWebEngineProfile::downloadRequested(QWebEngineDownloadRequest*) (_t1=0x7fceec2c6820, this=0x558dfba2b0e0)
    at /usr/src/debug/qt6-webengine/build/src/core/api/WebEngineCore_autogen/include/moc_qwebengineprofile.cpp:213
        _a = {0x0, 0x7ffd9a680cb0}
        q = 0x558dfba2b0e0
        itemPrivate = <optimized out>
        download = 0x7fceec2c6820
        state = <optimized out>
#21 QWebEngineProfilePrivate::downloadRequested(QtWebEngineCore::ProfileAdapterClient::DownloadItemInfo&) (this=0x558dfba2c090, info=...)
    at /usr/src/debug/qt6-webengine/qtwebengine-everywhere-src-6.5.2/src/core/api/qwebengineprofile.cpp:213
        q = 0x558dfba2b0e0
        itemPrivate = <optimized out>
        download = 0x7fceec2c6820
        state = <optimized out>
#22 0x00007fcf4d72ad95 in QtWebEngineCore::DownloadManagerDelegateQt::DetermineDownloadTarget(download::DownloadItem*, base::OnceCallback<void (base::FilePath const&, download::DownloadItem::TargetDisposition, download::DownloadDangerType, download::DownloadItem::MixedContentStatus, base::FilePath const&, base::FilePath const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, download::DownloadInterruptReason)>*) ()
    at /usr/src/debug/qt6-webengine/qtwebengine-everywhere-src-6.5.2/src/core/download_manager_delegate_qt.cpp:161
#23 0x00007fcf4f9fe40b in content::DownloadManagerImpl::DetermineDownloadTarget(download::DownloadItemImpl*, base::OnceCallback<void (base::FilePath const&, download::DownloadItem::TargetDisposition, download::DownloadDangerType, download::DownloadItem::MixedContentStatus, base::FilePath const&, base::FilePath const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, download::DownloadInterruptReason)>) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/content/browser/download/download_manager_impl.cc:496
#24 0x00007fcf4f602c3f in download::DownloadItemImpl::DetermineDownloadTarget() ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/components/download/internal/common/download_item_impl.cc:1699
#25 0x00007fcf4f60fb71 in base::RepeatingCallback<void (download::DownloadInterruptReason, long)>::Run(download::DownloadInterruptReason, long) && ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/callback.h:278
#26 download::DownloadJob::OnDownloadFileInitialized(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/components/download/internal/common/download_job.cc:75
#27 0x00007fcf4f60ffde in base::internal::FunctorTraits<void (download::DownloadJob::*)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), void>::Invoke<void (download::DownloadJob::*)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), base::WeakPtr<download::DownloadJob> const&, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> const&, download::DownloadInterruptReason, long>(void (download::DownloadJob::*)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), base::WeakPtr<download::DownloadJob> const&, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> const&, download::DownloadInterruptReason&&, long&&) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:647
#28 base::internal::InvokeHelper<true, void, 0ul, 1ul>::MakeItSo<void (download::DownloadJob::* const&)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), std::tuple<base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> > const&, download::DownloadInterruptReason, long>(void (download::DownloadJob::* const&)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), std::tuple<base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> > const&, download::DownloadInterruptReason&&, long&&) () at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:848
#29 base::internal::Invoker<base::internal::BindState<void (download::DownloadJob::*)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> >, void (download::DownloadInterruptReason, long)>::RunImpl<void (download::DownloadJob::* const&)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), std::tuple<base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> > const&, 0ul, 1ul>(void (download::DownloadJob::* const&)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), std::tuple<base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> > const&, std::integer_sequence<unsigned long, 0ul, 1ul>, download::DownloadInterruptReason&&, long&&) () at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:920
#30 base::internal::Invoker<base::internal::BindState<void (download::DownloadJob::*)(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long), base::WeakPtr<download::DownloadJob>, base::RepeatingCallback<void (download::DownloadInterruptReason, long)> >, void (download::DownloadInterruptReason, long)>::Run(base::internal::BindStateBase*, download::DownloadInterruptReason, long) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:884
#31 0x00007fcf4f5fb9f5 in base::RepeatingCallback<void (download::DownloadInterruptReason, long)>::Run(download::DownloadInterruptReason, long) && ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/callback.h:278
#32 base::internal::FunctorTraits<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, void>::Invoke<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long>(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>&&, download::DownloadInterruptReason&&, long&&) () at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:767
#33 base::internal::InvokeHelper<false, void, 0ul, 1ul>::MakeItSo<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, std::tuple<download::DownloadInterruptReason, long>>(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>&&, std::tuple<download::DownloadInterruptReason, long>&&) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:826
#34 base::internal::Invoker<base::internal::BindState<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long>, void ()>::RunImpl<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, std::tuple<download::DownloadInterruptReason, long>, 0ul, 1ul>(base::RepeatingCallback<void (download::DownloadInterruptReason, long)>&&, std::tuple<download::DownloadInterruptReason, long>&&, std::integer_sequence<unsigned long, 0ul, 1ul>) ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:920
#35 base::internal::Invoker<base::internal::BindState<base::RepeatingCallback<void (download::DownloadInterruptReason, long)>, download::DownloadInterruptReason, long>, void ()>::RunOnce(base::internal::BindStateBase*) () at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/bind_internal.h:871
#36 0x00007fcf50de236d in base::OnceCallback<void ()>::Run() && ()
    at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/functional/callback.h:145
#37 base::TaskAnnotator::RunTaskImpl(base::PendingTask&) ()
    at ./../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/task/common/task_annotator.cc:134
#38 0x00007fcf50dfb707 in RunTask<base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::LazyNow*)::<lambda(perfetto::EventContext&)> >
    () at ../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/task/common/task_annotator.h:72
#39 base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWorkImpl(base::LazyNow*) ()
    at ./../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:441
#40 0x00007fcf50dfc0d6 in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::DoWork() ()
    at ./../../../../../qtwebengine-everywhere-src-6.5.2/src/3rdparty/chromium/base/task/sequence_manager/thread_controller_with_message_pump_impl.cc:297
#41 0x00007fcf4d6f9cb2 in QtWebEngineCore::MessagePumpForUIQt::handleScheduledWork() ()
    at /usr/src/debug/qt6-webengine/qtwebengine-everywhere-src-6.5.2/src/core/browser_main_parts_qt.cpp:196
#42 0x00007fcf5c97d0b6 in QObject::event(QEvent*) (this=0x558dfbad5370, e=0x7fcef845a460)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qobject.cpp:1368
#43 0x00007fcf5897136b in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x0, receiver=receiver@entry=0x558dfbad5370, e=e@entry=0x7fcef845a460)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/widgets/kernel/qapplication.cpp:3287
        consumed = false
        filtered = false
#44 0x00007fcf58973139 in QApplication::notify(QObject*, QEvent*) (this=this@entry=0x558df9b8b4e0, receiver=receiver@entry=0x558dfbad5370, e=e@entry=0x7fcef845a460)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/widgets/kernel/qapplication.cpp:3049
        extra = <optimized out>
        isProxyWidget = <optimized out>
        w = <optimized out>
        isWindowType = <optimized out>
        isWidgetType = <optimized out>
        res = false
#45 0x00007fcf5935e9c7 in sipQApplication::notify(QObject*, QEvent*) (this=0x558df9b8b4e0, a0=0x558dfbad5370, a1=0x7fcef845a460)
    at /usr/src/debug/pyqt6/PyQt6-6.5.2/build/QtWidgets/sipQtWidgetsQApplication.cpp:243
        sipGILState = (PyGILState_UNLOCKED | unknown: 0x558c)
        sipMeth = <optimized out>
#46 0x00007fcf5c93b718 in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x558dfbad5370, event=event@entry=0x7fcef845a460)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qcoreapplication.cpp:1118
        selfRequired = <optimized out>
        result = false
        cbdata = {0x558dfbad5370, 0x7fcef845a460, 0x7ffd9a68171f}
        d = <optimized out>
        threadData = 0x558df9720e00
        scopeLevelCounter = {threadData = 0x558df9720e00}
#47 0x00007fcf5c93ba9b in QCoreApplication::sendEvent(QObject*, QEvent*) (event=0x7fcef845a460, receiver=<optimized out>)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qcoreapplication.cpp:1536
        e = 0x7fcef845a460
        pe = <optimized out>
        r = <optimized out>
        event_deleter = {d = 0x7fcef845a460}
        locker = {_M_device = 0x558df9720e58, _M_owns = false}
        startOffset = 0
        i = @0x558df9720e48: 1
#48 QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x558df9720e00)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qcoreapplication.cpp:1898
        e = 0x7fcef845a460
        pe = <optimized out>
        r = <optimized out>
        event_deleter = {d = 0x7fcef845a460}
        locker = {_M_device = 0x558df9720e58, _M_owns = false}
        startOffset = 0
        i = @0x558df9720e48: 1
#49 0x00007fcf5cb34854 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=0x0, event_type=0)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qcoreapplication.cpp:1757
        data = <optimized out>
        source = 0x558df9d9fea0
#50 postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x558df9d9fea0)
    at /usr/src/debug/qt6-base/qtbase-everywhere-src-6.5.2/src/corelib/kernel/qeventdispatcher_glib.cpp:243
        source = 0x558df9d9fea0
#51 0x00007fcf5d4e5a31 in g_source_remove_by_user_data (user_data=0x7fcf3da48980 <sipTypeDef_QtWebEngineCore_QWebEngineDownloadRequest>) at ../glib/glib/gmain.c:2642
        source = <optimized out>
#52 0x0000000000000000 in  ()
(gdb)

@The-Compiler The-Compiler modified the milestones: v3.0.1, v3.0.2 Oct 18, 2023
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Still happens on Qt 6.6.1, see 170173559677.8881.16610903218876743068@crashes.qutebrowser.org.

Probably gonna attempt an upstream report with "just" the stack trace, and add a workaround that avoids calling .origin() if possible.

The-Compiler added a commit that referenced this issue Dec 5, 2023
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Avoid calling DownloadItem.origin() if unneeded
c698091 
See #7854
@The-Compiler The-Compiler removed this from the v3.0.3 milestone Dec 5, 2023
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Reported upstream: [QTBUG-119763] [REG 6.5.2?] Rare segfaults in QWebEngineDownloadItem::page() - Qt Bug Tracker

And with c698091, the problematic method now only gets called when doing a download from a file: or http: URL, which hopefully makes the crash much less likely to happen even without a fix from Qt.

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bug: segfault/crash/hang There's a low-level crash in C++, or a hang/freeze. component: downloads Issues related to downloads. component: QtWebEngine Issues related to the QtWebEngine backend, based on Chromium. priority: 1 - middle Issues which should be done at some point, but aren't that important. qt Issues related to the Qt framework. qt: 6 Issues related to Qt 6.
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