[ELFLOADER] Fixed align issue (may help #1057)

[ksco]

for #1057

[ptitSeb]

There is no mention in linux docs of mmap that lenght should be aligned to pagesize. Only addr and offset need to be. Did you test your change extensively? because elfloader is really sensitive! Does this change fix the ticket?

[ksco]

IIUC, at line 258, we're calculating an aligned size for current fragment which will be used to map memory for the fragment. So we should use the head->multiblocks[n].paddr instead of e->p_paddr.

Before this fix, wine will crash at line 312 inside fread as we're not mapping enough memory for it.

Some logs after the fix:

Mmap64 for (@0x7f00000000 0x2bc500) for elf "/home/debian/wine-8.20/bin/../lib/wine/x86_64-unix/ntdll.so" returned 0x3fd6c54000 instead
Using emulated /home/debian/wine-8.20/bin/../lib/wine/x86_64-unix/ntdll.so
Mmap64 for (@0x7f01000000 0x1bbc8) for elf "/lib/x86_64-linux-gnu/libunwind.so.8" returned 0x3fd6c38000 instead
Using emulated /lib/x86_64-linux-gnu/libunwind.so.8

[ksco]

Does this change fix the ticket?

According to the reporter, yes, and it fixed wine for me as well.