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linux-user: mmap_reserve() not controlled by RESERVED_VA

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mmap_reserve() should be called only when RESERVED_VA is enabled.
Otherwise, unmaped virtual address space will never be reusable. This
bug will exhaust virtual address space in extreme conditions.

Signed-off-by: Riku Voipio <riku.voipio@nokia.com>
This commit is contained in:
amateur
2010-12-03 15:09:38 +02:00
committed by Riku Voipio
parent b0e102dd22
commit c65ffe6d6c
1 changed files with 3 additions and 1 deletions
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linux-user/mmap.c
+3 -1
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@@ -697,7 +697,9 @@ abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size,
old_size, new_size,
flags | MREMAP_FIXED,
g2h(mmap_start));
mmap_reserve(old_addr, old_size);
if ( RESERVED_VA ) {
mmap_reserve(old_addr, old_size);
}
}
} else {
int prot = 0;