diff options
| author | amateur <tianlei.zhao@gmail.com> | 2010-09-14 13:22:34 +0800 |
|---|---|---|
| committer | Riku Voipio <riku.voipio@nokia.com> | 2010-12-03 15:09:38 +0200 |
| commit | 85519c26ba30209a9ab0144924f4ef03412354ed (patch) | |
| tree | d95b90fb8d6a1338ba117ec544be5c71099c27f5 /linux-user | |
| parent | 1e3f9a9e927b7b1d3a935d958c9b2053c9679693 (diff) | |
| download | qemu-85519c26ba30209a9ab0144924f4ef03412354ed.tar.gz qemu-85519c26ba30209a9ab0144924f4ef03412354ed.tar.bz2 qemu-85519c26ba30209a9ab0144924f4ef03412354ed.zip | |
linux-user: mmap_reserve() not controlled by RESERVED_VA
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>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | 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 035dfbd076..abf21f6064 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; |