[Bug 49155] New: null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Bug ID: 49155
           Summary: null pointer reference in kernelbase/memory.c
           Product: Wine
           Version: 5.8
          Hardware: x86-64
                OS: FreeBSD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: kernelbase
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 67163
  --> https://bugs.winehq.org/attachment.cgi?id=67163
null pointer reference

kernelbase/memory.c has a null pointer reference.

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #67163|text/x-csrc                 |text/plain
          mime type|                            |
  Attachment #67163|patch-dlls_kernelbase_memor |patch.txt
           filename|y.c                         |
  Attachment #67163|0                           |1
           is patch|                            |

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

--- Comment #1 from [e-mail] ---
after this patch pathed, some application that has been crashed goes well in my
environment.

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

[e-mail] changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Gen Otsuji  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #67163|null pointer reference      |[patch]avoid null pointer
        description|                            |reference

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Gen Otsuji  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86-64                      |Other
                 OS|FreeBSD                     |other

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

--- Comment #2 from Gen Otsuji  ---
(comment #1)
> patch pathed

s/pathed/patched/

Hello.

the reproducer of this bug is a proprietary software(exe):
metatrader5 5.00 build 2361.
I haven't written the test application(exe) for reproducing the bug.

There are two cases.

Case 1)
 I clicked the menu(Tools) of metatrader5 running and 
 clicked always the same sub-menu(Options (Ctrl+O)),
 and then it has crashed, and generates
 the Crash info in C:\Users%USERNAME%\Application Data\MetaQuotes\Crashes\

Case 2)
 I encountered more severe case.
 In case the metatrader5 will be launched and goes to crash
 after this application is installed.
 I didn't remember if it generates or not 
 the Crash info in C:\Users%USERNAME%\Application Data\MetaQuotes\Crashes\

Regards.

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

--- Comment #3 from Gen Otsuji  ---
But now both two cases have gone someware in my environment.
my Environment:
 wine 5.8 (with staging)(+patch)
 FreeBSD 12.1 RELEASE-p5 amd64

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Gen Otsuji  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from Gen Otsuji  ---
This patch is harmful. I want to cancel this.
the error should be caught in __EXCEPT_PAGE_FALUT block.

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Gen Otsuji  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|Other                       |x86-64
                 OS|other                       |FreeBSD

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Gen Otsuji  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #5 from Gen Otsuji  ---
This patch is invalid and I want to close.
null pointer dereference shoud be caught by __EXCEPT_PAGE_FAULT block.
But FreeBSD doesn't catch this exception
trapno is diffrent between FreeBSD and Linux or others.

[Bug 49155] null pointer reference in kernelbase/memory.c

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49155

Zebediah Figura  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|kernelbase                  |kernel32