From: amateur <tianlei.z...@gmail.com>
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.voi...@nokia.com>
---
linux-user/mmap.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 035dfbd..abf21f6 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -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;
--
1.6.5
