git: 32e77bcdec5c - main - vm_phys_early_startup(): Panic if phys_avail[] is empty

[Olivier Certner]

The branch main has been updated by olce:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=32e77bcdec5c034a9252876aa018f0bf34b36dbc

commit 32e77bcdec5c034a9252876aa018f0bf34b36dbc
Author:     Olivier Certner <o...@freebsd.org>
AuthorDate: 2024-10-28 16:59:57 +0000
Commit:     Olivier Certner <o...@freebsd.org>
CommitDate: 2025-02-19 14:13:27 +0000

    vm_phys_early_startup(): Panic if phys_avail[] is empty
    
    Reviewed by:    markj
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D48631
---
 sys/vm/vm_phys.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/vm/vm_phys.c b/sys/vm/vm_phys.c
index 82272be1a6c9..ca6bec8b8b9f 100644
--- a/sys/vm/vm_phys.c
+++ b/sys/vm/vm_phys.c
@@ -2017,6 +2017,9 @@ vm_phys_early_startup(void)
        struct vm_phys_seg *seg;
        int i;
 
+       if (phys_avail[1] == 0)
+               panic("phys_avail[] is empty");
+
        for (i = 0; phys_avail[i + 1] != 0; i += 2) {
                phys_avail[i] = round_page(phys_avail[i]);
                phys_avail[i + 1] = trunc_page(phys_avail[i + 1]);