git: 50d663b14b31 - main - vm: Fix vm_map_find_min()

[Alan Cox]

The branch main has been updated by alc:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=50d663b14b310d6020b4b6cc92d4fae985f086f2

commit 50d663b14b310d6020b4b6cc92d4fae985f086f2
Author:     Alan Cox <a...@freebsd.org>
AuthorDate: 2023-07-25 07:24:19 +0000
Commit:     Alan Cox <a...@freebsd.org>
CommitDate: 2023-07-26 05:24:50 +0000

    vm: Fix vm_map_find_min()
    
    Fix the handling of address hints that are less than min_addr by
    vm_map_find_min().
    
    Reported by:    dchagin
    Reviewed by:    kib
    Fixes:  d8e6f4946cec0 "vm: Fix anonymous memory clustering under ASLR"
    Differential Revision:  https://reviews.freebsd.org/D41159
---
 sys/vm/vm_map.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sys/vm/vm_map.c b/sys/vm/vm_map.c
index 444e09986d4e..eb607d519247 100644
--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -2255,10 +2255,10 @@ vm_map_find_min(vm_map_t map, vm_object_t object, 
vm_ooffset_t offset,
        int rv;
 
        hint = *addr;
-       if (hint == 0)
+       if (hint == 0) {
                cow |= MAP_NO_HINT;
-       if (hint < min_addr)
                *addr = hint = min_addr;
+       }
        for (;;) {
                rv = vm_map_find(map, object, offset, addr, length, max_addr,
                    find_space, prot, max, cow);