[Bug 52159] New: 64-bit cygwin gdb.exe and python3.8.exe fail to run
WineHQ Bugzilla
wine-bugs at winehq.org
Fri Dec 3 11:34:33 CST 2021
https://bugs.winehq.org/show_bug.cgi?id=52159
Bug ID: 52159
Summary: 64-bit cygwin gdb.exe and python3.8.exe fail to run
Product: Wine
Version: 6.22
Hardware: x86-64
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ntdll
Assignee: wine-bugs at winehq.org
Reporter: bernhardu at mailbox.org
Distribution: ---
Created attachment 71205
--> https://bugs.winehq.org/attachment.cgi?id=71205
details.txt
This issue can be seen if the workarounds for bug #47808 got applied first.
Both gdb.exe and python3.8.exe fail in the python initialisation.
As far as I see it python allocates 8 bytes for a sem_t structure.
This uninitialized struct is given to sem_init which checks if this
is a previously initialized semaphore by checking
with verifyable_object_isvalid. This check happens inside
a __try/__endtry [2] [3].
That way we end up in RtlUnwindEx, which inspects
NtCurrentTeb()->Tib.ExceptionList.
Unfortunately this list finally contains a pointer to the initial stack,
which cygwin deallocated before [1].
See details.txt.
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