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| author | Richard Purdie <richard.purdie@linuxfoundation.org> | 2021-01-08 17:42:12 +0000 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2021-02-13 22:50:50 +0100 |
| commit | ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712 (patch) | |
| tree | 47efe65cf5f2e3fb15aba79ed2ac864dbb07fce4 /linux-user/generic/sockbits.h | |
| parent | 22d113b52f410d345c3a50a00d2eafa64138e427 (diff) | |
| download | focaccia-qemu-ccc5ccc17f8cfbfd87d9aede5d12a2d47c56e712.tar.gz focaccia-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/generic/sockbits.h')
0 files changed, 0 insertions, 0 deletions