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bsd-user: Deal with mmap where start > reserved_va

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Fixes: f12294b5bd ("bsd-user: Use page_find_range_empty for mmap_find_vma_reserved")
Signed-off-by: Bingwu Zhang <xtex@astrafall.org>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Helge Deller <deller@gmx.de>
This commit is contained in:
Bingwu Zhang
2026-02-28 00:46:31 +08:00
committed by Helge Deller
parent f2813e13fe
commit e8e7d1f977
1 changed files with 5 additions and 3 deletions
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8
bsd-user/mmap.c
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@@ -258,12 +258,14 @@ abi_ulong mmap_next_start = TASK_UNMAPPED_BASE;
static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size,
abi_ulong alignment)
{
abi_ulong ret;
abi_ulong ret = -1;
ret = page_find_range_empty(start, reserved_va, size, alignment);
if (start <= reserved_va) {
ret = page_find_range_empty(start, reserved_va, size, alignment);
}
if (ret == -1 && start > TARGET_PAGE_SIZE) {
/* Restart at the beginning of the address space. */
ret = page_find_range_empty(TARGET_PAGE_SIZE, start - 1,
ret = page_find_range_empty(TARGET_PAGE_SIZE, MIN(start - 1, reserved_va),
size, alignment);
}