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| author | Richard Purdie | 2021-01-08 18:42:12 +0100 |
|---|---|---|
| committer | Laurent Vivier | 2021-02-13 22:50:50 +0100 |
| commit | ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712 (patch) | |
| tree | 47efe65cf5f2e3fb15aba79ed2ac864dbb07fce4 /linux-user/mips/syscallhdr.sh | |
| parent | linux-user: Fix loading of BSS segments (diff) | |
| download | qemu-ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712.tar.gz qemu-ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712.tar.xz qemu-ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712.zip | |
linux-user/mmap: Avoid asserts for out of range mremap calls
If mremap() is called without the MREMAP_MAYMOVE flag with a start address
just before the end of memory (reserved_va) where new_size would exceed
it (and GUEST_ADDR_MAX), the assert(end - 1 <= GUEST_ADDR_MAX) in
page_set_flags() would trigger.
Add an extra guard to the guest_range_valid() checks to prevent this and
avoid asserting binaries when reserved_va is set.
This meant a bug I was seeing locally now gives the same behaviour
regardless of whether reserved_va is set or not.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <70c46e7b999bafbb01d54bfafd44b420d0b782e9.camel@linuxfoundation.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/mips/syscallhdr.sh')
0 files changed, 0 insertions, 0 deletions