[Bug 50408] New: wineboot crash to due getaddrinfo() returning NULL ai_canonname

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50408

Bug ID: 50408
           Summary: wineboot crash to due getaddrinfo() returning NULL
                    ai_canonname
           Product: Wine
           Version: 6.0-rc4
          Hardware: x86-64
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: winsock
          Assignee: [e-mail]
          Reporter: [e-mail]

After the WINEPREFIX is created, wineserver exits, and any Wine application is
run, wineboot crashes with this error and incorrect stack trace:

Unhandled exception: page fault on read access to 0x00000000 in 32-bit code
(0x70bab1d7).
Register dump:
 CS:0033 SS:003b DS:003b ES:003b FS:0013 GS:001b
 EIP:70bab1d7 ESP:0075f008 EBP:0075f008 EFLAGS:00010246(  R- --  I  Z- -P- )
 EAX:00000000 EBX:0075f6e0 ECX:0000002e EDX:003e2034
 ESI:00000000 EDI:0075f4d8
Stack dump:
0x0075f008:  0075fef8 0040633d 00000000 0000002e
0x0075f018:  0075f4d8 0075f094 00000000 00020006
0x0075f028:  00000000 0075f6e0 00000000 00000000
0x0075f038:  00000000 00000000 00000000 00000000
0x0075f048:  00000000 004508e0 0075f094 7bc0c0b0
0x0075f058:  7b632328 7bc2a280 00000034 0075f4d8
Backtrace:
=>0 0x70bab1d7 memcmp+0x107(ptr2=<is not available>, n=<is not available>)
[Z:\home\user\Wine\wine\dlls\msvcrt\string.c:2602] in ucrtbase (0x0075f008)
  1 0x0040633d main+0x151c(argv=<is not available>)
[Z:\home\user\Wine\wine\programs\wineboot\wineboot.c:829] in wineboot
(0x0075fef8)
  2 0x004042d8 mainCRTStartup+0x67()
[Z:\home\user\Wine\wine\dlls\msvcrt\crt_main.c:58] in wineboot (0x0075ff30)
  3 0x7b62ddf0 WriteTapemark+0xff(type=<is not available>, count=<is not
available>, immediate=<is not available>)
[Z:\home\user\Wine\wine\dlls\kernel32\tape.c:317] in kernel32 (0x0075ff48)
  4 0x7bc56b97 RtlSleepConditionVariableSRW+0x226(lock=<is not available>,
timeout=<is not available>, flags=<is not available>)
[Z:\home\user\Wine\wine\dlls\ntdll\sync.c:557] in ntdll (0x0075ff5c)
  5 0x7bc56e40 call_thread_func+0xaf(arg=0x3fe000)
[Z:\home\user\Wine\wine\dlls\ntdll\thread.c:134] in ntdll (0x0075ffec)
0x70bab1d7 memcmp+0x107 [Z:\home\user\Wine\wine\dlls\msvcrt\string.c:2602] in
ucrtbase: movzbl    0x0(%eax),%edx
2602            if (*str == (char)c) return (char*)str;
Modules:
Module    Address            Debug info    Name (8 modules)
PE      400000-  450000    Dwarf           wineboot
PE    61740000-61802000    Deferred        advapi32
PE    62790000-62794000    Deferred        ws2_32
PE    6bc00000-6bc79000    Deferred        sechost
PE    70b40000-70d77000    Dwarf           ucrtbase
PE    7b000000-7b2a2000    Deferred        kernelbase
PE    7b600000-7b8f6000    Dwarf           kernel32
PE    7bc00000-7be33000    Dwarf           ntdll
Threads:
process  tid      prio (all id:s are in hex)
00000020 
    00000024    0
00000028 (D) C:\windows\system32\wineboot.exe
    0000002c    0 <==
    00000038    0
0000003c explorer.exe
    00000040    0
    00000044    0
    00000048    0
System information:
    Wine build: wine-6.0-rc2-43-gef876fc54e2
    Platform: i386
    Version: Windows 7
    Host system: FreeBSD
    Host version: 12.2-RELEASE