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Re: [PATCH] hyperv: add check for NULL for msg
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From: |
Maciej S. Szmigiero |
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Subject: |
Re: [PATCH] hyperv: add check for NULL for msg |
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Date: |
Thu, 28 Sep 2023 18:18:27 +0200 |
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User-agent: |
Mozilla Thunderbird |
On 28.09.2023 15:25, Anastasia Belova wrote:
cpu_physical_memory_map may return NULL in hyperv_hcall_post_message.
Add check for NULL to avoid NULL-dereference.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 76036a5fc7 ("hyperv: process POST_MESSAGE hypercall")
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Makes sense to me, thanks.
Did you run your static checker through the remaining QEMU files,
too?
I can see similar cpu_physical_memory_map() usage in, for example:
target/s390x/helper.c, hw/nvram/spapr_nvram.c, hw/hyperv/vmbus.c,
display/ramfb.c...
Thanks,
Maciej