* [PATCH] KVM: s390: pv: ignore ultravisor donated storage for kmemleak
@ 2026-07-17 11:27 Christian Borntraeger
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From: Christian Borntraeger @ 2026-07-17 11:27 UTC (permalink / raw)
To: KVM
Cc: Christian Borntraeger, Janosch Frank, David Hildenbrand,
linux-s390, Claudio Imbrenda, Heiko Carstens, Vasily Gorbik,
Alexander Gordeev, Sven Schnelle
ignore ultravisor donated memory for kmemleak to avoid kernel crashes
when accessing such memory.
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
---
arch/s390/kernel/uv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c
index 98a7f988fc69..e0286f434e25 100644
--- a/arch/s390/kernel/uv.c
+++ b/arch/s390/kernel/uv.c
@@ -16,6 +16,7 @@
#include <linux/swap.h>
#include <linux/pagewalk.h>
#include <linux/backing-dev.h>
+#include <linux/kmemleak.h>
#include <linux/vmalloc.h>
#include <asm/facility.h>
#include <asm/sections.h>
@@ -71,6 +72,7 @@ void __init setup_uv(void)
uv_info.uv_base_stor_len);
goto fail;
}
+ kmemleak_ignore_phys(__pa(uv_stor_base));
if (uv_init(__pa(uv_stor_base), uv_info.uv_base_stor_len)) {
memblock_free(uv_stor_base, uv_info.uv_base_stor_len);
--
2.53.0
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2026-07-17 11:27 [PATCH] KVM: s390: pv: ignore ultravisor donated storage for kmemleak Christian Borntraeger
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