Github/Cygwin error: cygheap base mismatch detected

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Git has been giving me this error

    0 [main] sh (47116) C:\Users\Marcus\AppData\Local\GitHub\PortableGit_c7e0cbde92ba565cb218a521411d0e854079a28c\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x11C7400/0x1297400.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.
    0 [main] sh 42052 fork: child -1 - forked process 47116 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
/mingw32/libexec/git-core/git-sh-setup: fork: retry: No child processes
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.
    0 [main] sh 42052 fork: child -1 - forked process 47116 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
/mingw32/libexec/git-core/git-sh-setup: fork: retry: No child processes

Things I've tried include:

  • deleting cygwin from C:\cygwin and C:\cygwin64 and reinstalling
  • reinstalling github using the uninstaller and installer.
  • uninstalling github and manually removing its local and roaming appdata folders, and reinstalling.
  • rebooting the computer
  • rebasing C:\cygwin, it succeeded, but didnt fix any issues.
  • rebasing %appdata%\Local\Github\PortableGit_c7e...\. it returned the original error again.

for reference, I'm running windows 10 64 bit. The only other question I could find that pin pointed the error I'm getting never reached a solution: link here

I'm not sure where else to go aside from just reinstalling windows altogether, any help would be greatly appreciated.

git
github
cygwin
asked on Stack Overflow Jan 23, 2016 by Marcus Gosselin • edited May 23, 2017 by Community

7 Answers

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The shell from git-for-windows (based on msys2) is not meant to be run in Cygwin or a different install of msys2.

GitHub Desktop uses an old git-for-windows (2.5.3, Sept. 2015)

For a git bash session, you do not need Cygwin or GitHub Desktop.

Uncompress the latest git-for-windows azrchive you can find:

Then:

cd c:\prgs\git
mklink /J latest PortableGit-2.7.0-64-bit
set GIT_ROOT=c:\prgs\git\latest
set PATH=%PATH%;%GIT_ROOT%;%GIT_ROOT%\bin;%GIT_ROOT%\cmd;%GIT_ROOT%\us`\bin

You will then be able to type git-bash to launch a linux-based bash session.

Or, from a regular CMD shell session, you will have access to 200+ unix commands (curl, cat, xargs, ls, ...).
No need for Cygwin.

answered on Stack Overflow Jan 23, 2016 by VonC • edited May 23, 2017 by Community
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Disable Force randomization for images (mandatory ASLR) in your system's Windows Defender Security Center. Or exclude ASLR for git executables:

Get-Item -Path "C:\Program Files\Git\usr\bin\*.exe" | %{ Set-ProcessMitigation -Name $_.Name -Disable ForceRelocateImages }
answered on Stack Overflow Mar 2, 2018 by pentaadrian • edited Mar 2, 2018 by pentaadrian
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Rebooting fixed it for me. I probably got this error because of upgrading Git for Windows. Try rebooting before doing any of the other crazy things!

answered on Stack Overflow Mar 29, 2017 by goamn
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I had a very similar problem, but neither restarts nor reinstalling git or cygwin helped. I always got:

      1 [main] sh (12220) C:\Program Files\Git\usr\bin\sh.exe: *** fatal error - cygheap base mismatch detected - 0x37C7408/0x38E7408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.
      0 [main] sh 6928 fork: child -1 - forked process 12220 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
C:\Program Files\Git\mingw64/libexec/git-core\git-stash: fork: retry: Resource temporarily unavailable

Took me a while to figure out that it started after I read about a windows bug related to "System-wide mandatory ASLR", and how the settings available via Windows UI weren't setting the proper registry keys. After making my system more secure by adding this registry entry, cygwin forking broke:

Windows Registry Editor Version 5.00 
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\kernel]
"MitigationOptions"=hex:00,01,01,00,00,00,00,00,00,00,00,00,00,00,00,00

Source: Clarifying the behavior of mandatory ASLR

That resulted in git-stash not working anymore, nor cygwin working (which I installed later. Removing that registry key again fixed the issue.

answered on Stack Overflow Dec 4, 2017 by Jakob Ziegler
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OK for me a similar error ffmpeg $ ./configure ...

License: LGPL version 2.1 or later
Creating config.mak, config.h, and doc/config.texi...
      1 [main] cmp (5984) C:\Program Files\Git\usr\bin\cmp.exe: *** fatal error - cygheap base mismatch detected - 0x180326400/0x180330400.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version.  The most recent version *should*
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution.  Rebooting is also suggested if you
are unable to find another cygwin DLL.

meant "you are trying to build using MSYS2 but accidentally failing over to some git distributed cmp.exe files, which are apparently unuseable" (see VonC's answer).

Fix in my case: install them into MSYS2 proper:

$ pacman -S make

$ pacman -S diffutils # for cmp package
answered on Stack Overflow Jun 15, 2016 by rogerdpack
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some packages in MSYS2 you installed is in conflict with x:\cygwin\bin,so just delete MSYS2 PATH in system environment

answered on Stack Overflow Mar 17, 2017 by righere
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After enabling Mandatory ALSR by default on Windows 10.

I need to disable ForceRelocateImages to all git-bash executables. Todo this, create a small PowerShell script or type direct in PowerShell the code below. You need to run PowerShell as an administrator.

Get-Item -Path "C:\Program Files\Git\usr\bin\*.exe" | %{ Set-ProcessMitigation -Name $_.Name -Disable ForceRelocateImages }
Get-Item -Path "C:\Program Files\Git\bin\*.exe" | %{ Set-ProcessMitigation -Name $_.Name -Disable ForceRelocateImages }
Get-Item -Path "C:\Program Files\Git\*.exe" | %{ Set-ProcessMitigation -Name $_.Name -Disable ForceRelocateImages }

After that, git-bash works fine.

answered on Stack Overflow Oct 16, 2020 by Murilo Pontes

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