https://bugs.winehq.org/show_bug.cgi?id=56093
Bug ID: 56093 Summary: msys/pacman: fails with "fixup_mmaps_after_fork: VirtualQueryEx failed" Product: Wine Version: 9.0-rc3 Hardware: x86-64 OS: Linux Status: UNCONFIRMED Severity: normal Priority: P2 Component: kernel32 Assignee: wine-bugs@winehq.org Reporter: bernhardu@mailbox.org Distribution: ---
Updating a msys2 installation via "pacman -Suy" fails in below way.
This is a result of the parent process doing a DuplicateHandle with PROCESS_QUERY_LIMITED_INFORMATION and inheriting this to the forked process.
This fork tries to recreate the mappings of the parent but fails the VirtualQueryEx call with this inherited handle of the parent process.
It does fail because in wine it leads to a call to get_process_from_handle with PROCESS_QUERY_INFORMATION which the handle was not created with.
msys2 does intentionally use PROCESS_QUERY_LIMITED_INFORMATION instead of PROCESS_QUERY_INFORMATION with DuplicateHandle on windows 8.1 and up.
wine bash.exe --login pacman -Suy
0 [main] pacman 1051 fixup_mmaps_after_fork: VirtualQueryEx failed for MAP_PRIVATE address 0x6FFFFFFF0000, Win32 error 5 562 [main] pacman 1051 C:\msys64\usr\bin\pacman.exe: *** fatal error in forked process - recreate_mmaps_after_fork_failed
In the parent process: https://github.com/msys2/msys2-runtime/blob/msys2-3.4.10/winsup/cygwin/sigpr...
In the child process: https://github.com/msys2/msys2-runtime/blob/msys2-3.4.10/winsup/cygwin/mm/mm...