On Fri, 24 May 2024 11:50:35 -0700 (PDT) Jeremy Drake wrote: > Seen on msys2, but doesn't seem specific to it. > > Frequently, when running ldd in a loop, it will hang. I managed to get a > backtrace from gdb with symbols: > > (gdb) bt > #0 0x00007ffecea0fa34 in ntdll!ZwDeviceIoControlFile () > from /c/Windows/SYSTEM32/ntdll.dll > #1 0x00007ffecbead7a9 in KERNELBASE!GetConsoleScreenBufferInfoEx () > from /c/Windows/System32/KERNELBASE.dll > #2 0x00007ffecbef58dc in KERNELBASE!GetConsoleTitleW () > from /c/Windows/System32/KERNELBASE.dll > #3 0x00007ffecbfb8195 in KERNELBASE!GetConsoleProcessList () > from /c/Windows/System32/KERNELBASE.dll > #4 0x000000018015851f in fhandler_pty_common::get_console_process_id ( > pid=19348, match=match@entry=true, cygwin=cygwin@entry=false, > stub_only=stub_only@entry=false, nat=nat@entry=false) > at /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/fhandler/pty.cc:95 > #5 0x0000000180101e3b in fhandler_console::attach_console ( > owner=<optimized out>, err=err@entry=0x0) > at > /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/fhandler/console.cc:76 > #6 0x0000000180102d40 in fhandler_console::set_output_mode (m=tty::native, > t=0x1a0030028, p=0x800021d68) > at > /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/fhandler/console.cc:853 > #7 0x000000018010d6cc in fhandler_console::set_console_mode_to_native () > at > /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/fhandler/console.cc:4189 > #8 0x000000018010d71d in ContinueDebugEvent_Hooked (p=26628, t=26656, > s=65538) > at > /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/fhandler/console.cc:4238 > #9 0x0000000100401bd7 in ?? () > #10 0x000000010040279f in ?? () > #11 0x00000001800483a7 in dll_crt0_1 () > at /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/dcrt0.cc:1015 > #12 0x0000000180045f63 in _cygtls::call2 (this=0x7ffffce00, > func=0x180047240 <dll_crt0_1(void*)>, arg=0x0, > buf=buf@entry=0x7ffffcdf0) > at /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/cygtls.cc:41 > #13 0x0000000180046014 in _cygtls::call (func=<optimized out>, > arg=<optimized out>) > at /C/_/msys2-runtime/src/msys2-runtime/winsup/cygwin/cygtls.cc:28 > #14 0x0000000000000000 in ?? () > > Other attempts without symbols showed the same Windows APIs at least.
Thanks for the report. However, I cannot reproduce the issue. If it always hangs in GetConsoleProcessList (), I doubt it is not a cygwin bug but a windows bug. By any chance, is the number of processes that attach to the same pty more than 32768 in your environment? -- Takashi Yano <takashi.y...@nifty.ne.jp> -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
