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3.7.0-0.527.gd21aaac37996.x86_64 hangs with non-cygwin processes
Posted by Anonymous on Tue 23rd Jun 2026 16:48
raw | new post

  1. $ uname -a
  2. CYGWIN_NT-10.0-19045 wingrendel02 3.7.0-0.527.gd21aaac37996.x86_64 2026-06-23 01:36 UTC x86_64 Cygwin
  3.  
  4. # start xterm or konsole, and then run:
  5. $ export PATH="/cygdrive/c/Program Files (x86)/Microsoft Visual Studio/2019/Community/MSBuild/Current/Bin/:$PATH" CERTIFICATE_THUMBPRINT="$(powershell -c 'Get-ChildItem -Path Cert:\CurrentUser\My | Where-Object {$_.Subject -like "*WDKTestCert*"} | Select-Object -ExpandProperty Thumbprint')"
  6.  
  7. # This will hang xterm (or konsole) with a stack trace like this:
  8. (gdb) thread apply all bt
  9.  
  10. Thread 14 (Thread 1744.0xf98):
  11. #0  0x00007ffdfde310d1 in ntdll!DbgBreakPoint () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  12. #1  0x00007ffdfde5cb3e in ntdll!DbgUiRemoteBreakin () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  13. #2  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  14. #3  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  15. #4  0x0000000000000000 in ?? ()
  16.  
  17. Thread 13 (Thread 1744.0xa6c "socksel"):
  18. #0  0x00007ffdfde2d624 in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  19. #1  0x00007ffdfb93b6ae in WaitForSingleObjectEx () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  20. #2  0x00007ffdc2455bc4 in cygthread::stub (arg=arg@entry=0x7ffdc2649818 <threads+440>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:194
  21. #3  0x00007ffdc2456685 in _cygtls::call2 (this=0x290ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc2649818 <threads+440>, buf=buf@entry=0x290cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  22. #4  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  23. #5  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  24. #6  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  25. #7  0x0000000000000000 in ?? ()
  26.  
  27. Thread 12 (Thread 1744.0x103c "commune"):
  28. #0  0x00007ffdfde2d624 in ntdll!ZwWaitForSingleObject () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  29. #1  0x00007ffdfb93b6ae in WaitForSingleObjectEx () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  30. #2  0x00007ffdc2455bc4 in cygthread::stub (arg=arg@entry=0x7ffdc26497c0 <threads+352>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:194
  31. #3  0x00007ffdc2456685 in _cygtls::call2 (this=0x270ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc26497c0 <threads+352>, buf=buf@entry=0x270cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  32. --Type <RET> for more, q to quit, c to continue without paging--c
  33. #4  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  34. #5  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  35. #6  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  36. #7  0x0000000000000000 in ?? ()
  37.  
  38. Thread 11 (Thread 1744.0x13a0 "waitproc"):
  39. #0  0x00007ffdfde2d664 in ntdll!ZwReadFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  40. #1  0x00007ffdfb94dc43 in ReadFile () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  41. #2  0x00007ffdc24ace8b in proc_waiter (arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/pinfo.cc:1261
  42. #3  0x00007ffdc2455690 in cygthread::callfunc (this=this@entry=0x7ffdc2649768 <threads+264>, issimplestub=issimplestub@entry=false) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:130
  43. #4  0x00007ffdc2455b89 in cygthread::stub (arg=arg@entry=0x7ffdc2649768 <threads+264>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:173
  44. #5  0x00007ffdc2456685 in _cygtls::call2 (this=0x250ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc2649768 <threads+264>, buf=buf@entry=0x250cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  45. #6  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  46. #7  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  47. #8  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  48. #9  0x0000000000000000 in ?? ()
  49.  
  50. Thread 10 (Thread 1744.0x1bec "ptymf"):
  51. #0  0x00007ffdfde2e0f4 in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  52. #1  0x00007ffdfb970d00 in WaitForMultipleObjectsEx () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  53. #2  0x00007ffdfb970bfe in WaitForMultipleObjects () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  54. #3  0x00007ffdc2565491 in fhandler_pty_master::pty_master_fwd_thread (p=p@entry=0x1e0cbc0) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/fhandler/pty.cc:3192
  55. #4  0x00007ffdc256591c in pty_master_fwd_thread (arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/fhandler/pty.cc:3293
  56. #5  0x00007ffdc2455690 in cygthread::callfunc (this=this@entry=0x7ffdc2649710 <threads+176>, issimplestub=issimplestub@entry=false) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:130
  57. #6  0x00007ffdc2455b89 in cygthread::stub (arg=arg@entry=0x7ffdc2649710 <threads+176>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:173
  58. #7  0x00007ffdc2456685 in _cygtls::call2 (this=0x1e0ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc2649710 <threads+176>, buf=buf@entry=0x1e0cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  59. #8  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  60. #9  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  61. #10 0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  62. #11 0x0000000000000000 in ?? ()
  63.  
  64. Thread 9 (Thread 1744.0xba0):
  65. #0  0x00007ffdfde31034 in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  66. #1  0x00007ffdfdddd407 in ntdll!TpReleaseCleanupGroupMembers () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  67. #2  0x00007ffdc2456685 in _cygtls::call2 (this=0x1c0ce00, func=0x7ffdfdddd110 <ntdll!TpReleaseCleanupGroupMembers+1104>, arg=0x750b50, buf=buf@entry=0x1c0cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  68. #3  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  69. #4  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  70. #5  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  71. #6  0x0000000000000000 in ?? ()
  72.  
  73. Thread 8 (Thread 1744.0x7d4):
  74. #0  0x00007ffdfde31034 in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  75. #1  0x00007ffdfdddd407 in ntdll!TpReleaseCleanupGroupMembers () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  76. #2  0x00007ffdc2456685 in _cygtls::call2 (this=0x1a0ce00, func=0x7ffdfdddd110 <ntdll!TpReleaseCleanupGroupMembers+1104>, arg=0x750b50, buf=buf@entry=0x1a0cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  77. #3  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  78. #4  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  79. #5  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  80. #6  0x0000000000000000 in ?? ()
  81.  
  82. Thread 7 (Thread 1744.0x19cc "ptym"):
  83. #0  0x00007ffdfde2dcc4 in ntdll!ZwFsControlFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  84. #1  0x00007ffdfb993506 in KERNELBASE!ConnectNamedPipe () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  85. #2  0x00007ffdc2562185 in fhandler_pty_master::pty_master_thread (p=p@entry=0x180cba0) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/fhandler/pty.cc:2825
  86. #3  0x00007ffdc2562844 in pty_master_thread (arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/fhandler/pty.cc:2981
  87. #4  0x00007ffdc2455690 in cygthread::callfunc (this=this@entry=0x7ffdc26496b8 <threads+88>, issimplestub=issimplestub@entry=false) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:130
  88. #5  0x00007ffdc2455b89 in cygthread::stub (arg=arg@entry=0x7ffdc26496b8 <threads+88>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:173
  89. #6  0x00007ffdc2456685 in _cygtls::call2 (this=0x180ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc26496b8 <threads+88>, buf=buf@entry=0x180cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  90. #7  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  91. #8  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  92. #9  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  93. #10 0x0000000000000000 in ?? ()
  94.  
  95. Thread 6 (Thread 1744.0x27f0):
  96. #0  0x00007ffdfde2d6c4 in ntdll!ZwRemoveIoCompletion () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  97. #1  0x00007ffdfaa710ab in ?? () from /cygdrive/c/Windows/system32/mswsock.dll
  98. #2  0x00007ffdc2456685 in _cygtls::call2 (this=0x5fce00, func=0x7ffdfaa71010, arg=0x759960, buf=buf@entry=0x5fcd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  99. #3  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  100. #4  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  101. #5  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  102. #6  0x0000000000000000 in ?? ()
  103.  
  104. Thread 5 (Thread 1744.0x27d4 "sig"):
  105. #0  0x00007ffdfde2d664 in ntdll!ZwReadFile () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  106. #1  0x00007ffdfb94dc43 in ReadFile () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  107. #2  0x00007ffdc24cf480 in wait_sig () at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/sigproc.cc:1498
  108. #3  0x00007ffdc2455690 in cygthread::callfunc (this=this@entry=0x7ffdc2649660 <threads>, issimplestub=issimplestub@entry=false) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:130
  109. #4  0x00007ffdc2455b89 in cygthread::stub (arg=arg@entry=0x7ffdc2649660 <threads>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygthread.cc:173
  110. #5  0x00007ffdc2456685 in _cygtls::call2 (this=0x104ce00, func=0x7ffdc2455b20 <cygthread::stub(void*)>, arg=0x7ffdc2649660 <threads>, buf=buf@entry=0x104cd20) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  111. #6  0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  112. #7  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  113. #8  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  114. #9  0x0000000000000000 in ?? ()
  115.  
  116. Thread 4 (Thread 1744.0x19e8):
  117. #0  0x00007ffdfde31034 in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  118. #1  0x00007ffdfdddd407 in ntdll!TpReleaseCleanupGroupMembers () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  119. #2  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  120. #3  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  121. #4  0x0000000000000000 in ?? ()
  122.  
  123. Thread 3 (Thread 1744.0x154c):
  124. #0  0x00007ffdfde31034 in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  125. #1  0x00007ffdfdddd407 in ntdll!TpReleaseCleanupGroupMembers () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  126. #2  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  127. #3  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  128. #4  0x0000000000000000 in ?? ()
  129.  
  130. Thread 2 (Thread 1744.0x644):
  131. #0  0x00007ffdfde31034 in ntdll!ZwWaitForWorkViaWorkerFactory () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  132. #1  0x00007ffdfdddd407 in ntdll!TpReleaseCleanupGroupMembers () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  133. #2  0x00007ffdfcd97374 in KERNEL32!BaseThreadInitThunk () from /cygdrive/c/Windows/System32/KERNEL32.DLL
  134. #3  0x00007ffdfdddcc91 in ntdll!RtlUserThreadStart () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  135. #4  0x0000000000000000 in ?? ()
  136.  
  137. Thread 1 (Thread 1744.0xaf4 "xterm"):
  138. #0  0x00007ffdfde2e0f4 in ntdll!ZwWaitForMultipleObjects () from /cygdrive/c/Windows/SYSTEM32/ntdll.dll
  139. #1  0x00007ffdfb970d00 in WaitForMultipleObjectsEx () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  140. #2  0x00007ffdfb970bfe in WaitForMultipleObjects () from /cygdrive/c/Windows/System32/KERNELBASE.dll
  141. #3  0x00007ffdc24569c7 in cygwait (object=object@entry=0x244, timeout=timeout@entry=0x0, mask=mask@entry=5) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygwait.cc:79
  142. #4  0x00007ffdc2567383 in cygwait (mask=5, howlong=4294967295, h=0x244) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/local_includes/cygwait.h:45
  143. #5  cygwait (howlong=4294967295, h=0x244) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/local_includes/cygwait.h:51
  144. #6  fhandler_pty_master::write (this=0x800022f10, ptr=<optimized out>, len=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/fhandler/pty.cc:2470
  145. #7  0x00007ffdc24df675 in write (fd=4, ptr=0xa0009ab80, len=7) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/local_includes/dtable.h:64
  146. #8  0x00007ffdc25a1ac4 in _sigfe () at sigfe.s:35
  147. #9  0x00000001004109b3 in ?? ()
  148. #10 0x0000000100423f2a in ?? ()
  149. #11 0x000000010041faa1 in ?? ()
  150. #12 0x00000001004232fa in ?? ()
  151. #13 0x0000000100423582 in ?? ()
  152. #14 0x0000000100485749 in ?? ()
  153. #15 0x00007ffdc2458ab4 in dll_crt0_1 () at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/dcrt0.cc:1007
  154. #16 0x00007ffdc2456685 in _cygtls::call2 (this=0x7ffffce00, func=0x7ffdc24579d2 <dll_crt0_1(void*)>, arg=0x0, buf=buf@entry=0x7ffffcdf0) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:41
  155. #17 0x00007ffdc245673a in _cygtls::call (func=<optimized out>, arg=<optimized out>) at /usr/src/debug/cygwin-3.7.0-0.527.gd21aaac37996/winsup/cygwin/cygtls.cc:28
  156. #18 0x0000000000000000 in ?? ()

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