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linux-user: Deal with mmap where start > reserved_va

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Fixes: 4c13048e02 ("linux-user: Use page_find_range_empty for mmap_find_vma_reserved")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3310
Signed-off-by: Bingwu Zhang <xtex@astrafall.org>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Bingwu Zhang
2026-02-28 00:46:30 +08:00
committed by Helge Deller
parent 6a1221614f
commit f2813e13fe
1 changed files with 6 additions and 3 deletions
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9
linux-user/mmap.c
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@@ -423,12 +423,15 @@ abi_ulong mmap_next_start;
static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size,
abi_ulong align)
{
target_ulong ret;
target_ulong ret = -1;
ret = page_find_range_empty(start, reserved_va, size, align);
if (start <= reserved_va) {
ret = page_find_range_empty(start, reserved_va, size, align);
}
if (ret == -1 && start > mmap_min_addr) {
/* Restart at the beginning of the address space. */
ret = page_find_range_empty(mmap_min_addr, start - 1, size, align);
ret = page_find_range_empty(mmap_min_addr, MIN(start - 1, reserved_va),
size, align);
}
return ret;