[Bug 49225] New: FreeBSD "regression" causes assertion failure in (at least) applications using Gecko plugin

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49225

            Bug ID: 49225
           Summary: FreeBSD "regression" causes assertion failure in (at
                    least) applications using Gecko plugin
           Product: Wine
           Version: 5.9
          Hardware: x86
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: wine-bugs at winehq.org
          Reporter: damjan.jov at gmail.com

My commit to get DLLs loading at correct addresses caused a regression where
Wine crashes with an assertion failure when the ieframe component is loaded,
eg. run 7-zip file manager, and click on Help -> Contents:

---snip---
Assertion failed: (view->protect & VPROT_SYSTEM), function create_view, file
virtual.c, line 863.
wine: Assertion failed at address 6235FCA3 (thread 0024), starting debugger...
---snip---

Starting the debugger fails due to permissions, but even if you do:
sudo sysctl security.bsd.unprivileged_proc_debug=1
it deadlocks instead, so no stack trace is available.

This was the offending commit, by me, which exposed this bug for some
applications, while fixing others:


commit 55ba3648379d90642f174e74809b84130d6d1ddc
Author: Damjan Jovanovic <damjan.jov at gmail.com>
Date:   Mon May 18 21:04:58 2020 +0200

    libwine: Add support for mmap at fixed start addresses on FreeBSD.

    The way to implement MAP_TRYFIXED on FreeBSD is call mmap()
    with MAP_FIXED | MAP_EXCL, which will allocate the mapping
    from the exact starting address if possible, and if that fails,
    call mmap() again without them. This gets PE DLLs loading at
    their correct base addresses, and fixes a FreeBSD-specific
    problem with Cygwin's fork() caused by cygwin1.dll loading at
    different base addresses in the parent and child.

    Signed-off-by: Damjan Jovanovic <damjan.jov at gmail.com>
    Signed-off-by: Alexandre Julliard <julliard at winehq.org>

M       libs/wine/mmap.c

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.