41 lines
1.4 KiB
Diff
41 lines
1.4 KiB
Diff
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From 39eae397a6b573505c0e84cc808cd9765a950908 Mon Sep 17 00:00:00 2001
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From: guping <guping_yewu@cmss.chinamobile.com>
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Date: Mon, 15 Jul 2024 00:54:12 +0000
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Subject: [PATCH] physmem: Bail out qemu_ram_block_from_host() for invalid ram
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addrs cherry-pick from 596ccccdbfa124adb42be8c2faf0c74f4849c7a6
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Bail out in qemu_ram_block_from_host() when
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xen_ram_addr_from_mapcache() does not find an existing
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mapping.
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Signed-off-by: default avatarEdgar E. Iglesias <edgar.iglesias@amd.com>
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Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
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Reviewed-by: default avatarStefano Stabellini <sstabellini@kernel.org>
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Signed-off-by: guping <guping_yewu@cmss.chinamobile.com>
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---
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system/physmem.c | 4 ++++
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1 file changed, 4 insertions(+)
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diff --git a/system/physmem.c b/system/physmem.c
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index cbe838f203..0c629233bd 100644
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--- a/system/physmem.c
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+++ b/system/physmem.c
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@@ -2263,6 +2263,10 @@ RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset,
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ram_addr_t ram_addr;
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RCU_READ_LOCK_GUARD();
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ram_addr = xen_ram_addr_from_mapcache(ptr);
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+ if (ram_addr == RAM_ADDR_INVALID) {
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+ return NULL;
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+ }
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+
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block = qemu_get_ram_block(ram_addr);
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if (block) {
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*offset = ram_addr - block->offset;
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--
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2.41.0.windows.1
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