Симптомы:
$ wine
WINE@Etersoft 1.0.8
First running... Using WINEPREFIX=/home/dumb/.wine
Creating default file tree...
/usr/bin/wine: line 194: 2506 Segmentation fault WINESAFE=yes "${WINELOADER}" rundll32.exe setupapi.dll,InstallHinfSection DefaultInstall 128 wine.inf
/usr/bin/wine: line 195: 2509 Segmentation fault WINESAFE=yes "${WINELOADER}" regedit.exe "$CROOT/windows/inf/vendor.reg"
Building local environment...
Device 'a:' created as link for '/mnt/floppy' target.
...
Device 'lpt4' created as link for '/dev/lp3' target.
/usr/bin/wine: line 268: 2535 Segmentation fault $WINELOADER wineboot
WINE@Etersoft has been configured for the first time.
Use /home/dumb/wine_c as WINE C:\ disk.
Copy your program into and install it.
В результате каталог c:\windows\system32 не содержит dll, но все работает с dll из /usr/lib/wine/. Однако, взяв заполненный c:\windows\system32 ничего запустить не могу:
$ wine-kthread ./1cv7s.exe
wine: Unhandled page fault on read access to 0x00000000 at address 0x402586f8 (thread 0009), starting debugger...
err:seh:start_debugger Couldn't start debugger ("winedbg --auto 8 56") (1359)
Read the Wine Developers Guide on how to set up winedbg or another debugger
Ход разборок:
gdb --args /home/dumb/rpmbuild/BUILD/wine-20070915/loader/wine-preloader /home/dumb/rpmbuild/BUILD/wine-20070915/loader/wine-kthread ./NOTEPAD.EXE
(gdb) run ... jumping to 600019c0 Program received signal SIGSEGV, Segmentation fault. 0x60005240 in ?? ()
disassemble не работает, потому что исполняемый сегмент загружен самим wine-preloader
(gdb) x/64i $eip-32 0x60005220: call 0x6000195c 0x60005225: add $0x20,%esp 0x60005228: mov 0x164(%ebx),%eax 0x6000522e: mov (%eax),%edx 0x60005230: lea 0xf(%edx),%eax 0x60005233: and $0xf0,%al 0x60005235: sub %eax,%esp 0x60005237: mov %esp,0xffffff6c(%ebp) 0x6000523d: add $0xfffffffc,%esp 0x60005240: push %edx
(gdb) info registers eax 0x1000 4096 ecx 0x802 2050 edx 0x1000 4096 ebx 0x60013868 1610692712 esp 0xbfffdf58 0xbfffdf58 ebp 0xbffff074 0xbffff074 esi 0x63f2b 409387 edi 0x0 0 eip 0x60005240 0x60005240 eflags 0x10293 66195 cs 0x23 35 ss 0x2b 43 ds 0x2b 43 es 0x2b 43 fs 0x0 0 gs 0x0 0
получается, после сдвига стека на 0x1000 вниз все сломалось. wine-preloader резервирует мало стека?
Написал тест:
void f(int i)
{
int r[4096];
f(i+1);
}
int main()
{
f(0);
}
падает в одном и том же (по стеку и по i) месте, как при обычном запуске, так и при запуске wine-preloader'ом. С объемом стека все в порядке.
Нашел настоящую разницу: после загрузки wine-kthread резервирует пямять. Когда он запускается сам по себе картина такова:
...
stat("/usr/bin/wineserver", {st_mode=S_IFREG|0755, st_size=343953, ...}) = 0
old_mmap(0x7ffe0000, 1073741824, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7ffe0000
old_mmap(0x1000, 1110016, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x1000
old_mmap(NULL, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0
open("/usr/lib/wine/ntdll.dll.so", O_RDONLY) = 4
...
Когда же через wine-preloader:
...
stat("/usr/bin/wineserver", {st_mode=S_IFREG|0755, st_size=343953, ...}) = 0
old_mmap(0x7ffe0000, 1073741824, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
old_mmap(0x7ffe0000, 536870912, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
old_mmap(0x7ffe0000, 268435456, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x6021a000
munmap(0x6021a000, 268435456) = 0
old_mmap(0x7ffe0000, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x6021a000
munmap(0x6021a000, 134217728) = 0
old_mmap(0x7ffe0000, 67108864, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x6021a000
...
old_mmap(0x87fe0000, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x87fe0000
old_mmap(0x8ffe0000, 268435456, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
old_mmap(0x8ffe0000, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x8ffe0000
...
old_mmap(0xbffd0000, 65536, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
old_mmap(0x1000, 1110016, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)
brk(0x7c004000) = 0x7c004000
open("/usr/lib/wine/ntdll.dll.so", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0755, st_size=549156, ...}) = 0
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
...