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authorRichard Henderson <richard.henderson@linaro.org>2023-03-06 02:03:13 +0300
committerRichard Henderson <richard.henderson@linaro.org>2023-03-28 15:23:10 -0700
commit10310cbd6298def2dafd40069e27df2d25e233c5 (patch)
treecaab505242fa5768298a5b4aaa2e0424c7af8b0a /linux-user
parent49840a4a098149067789255bca6894645f411036 (diff)
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accel/tcg: Pass last not end to page_reset_target_data
Pass the address of the last byte to be changed, rather than the first address past the last byte. This avoids overflow when the last page of the address space is involved. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user')
-rw-r--r--linux-user/mmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 1d07ff5..995146f 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -946,7 +946,7 @@ abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice)
if (can_passthrough_madvise(start, end)) {
ret = get_errno(madvise(g2h_untagged(start), len, advice));
if ((advice == MADV_DONTNEED) && (ret == 0)) {
- page_reset_target_data(start, start + len);
+ page_reset_target_data(start, start + len - 1);
}
}
}