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Re: [PATCH] fuzz: check machine, before PC-specific code
From: |
Alexander Bulekov |
Subject: |
Re: [PATCH] fuzz: check machine, before PC-specific code |
Date: |
Sun, 14 Mar 2021 19:13:12 -0400 |
On 210314 1910, Alexander Bulekov wrote:
> We enumerate PCI devices on PC machines, but this breaks the fuzzer for
> non-PC machines and architectures. Add checks to avoid this.
>
> Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
> ---
> tests/qtest/fuzz/generic_fuzz.c | 11 ++++++++---
> 1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/tests/qtest/fuzz/generic_fuzz.c b/tests/qtest/fuzz/generic_fuzz.c
> index ee8c17a04c..d2b74028fe 100644
> --- a/tests/qtest/fuzz/generic_fuzz.c
> +++ b/tests/qtest/fuzz/generic_fuzz.c
> @@ -784,6 +784,7 @@ static void generic_pre_fuzz(QTestState *s)
> MemoryRegion *mr;
> QPCIBus *pcibus;
> char **result;
> + const char* machine_type;
>
> if (!getenv("QEMU_FUZZ_OBJECTS")) {
> usage();
> @@ -827,9 +828,13 @@ static void generic_pre_fuzz(QTestState *s)
> exit(1);
> }
>
> - pcibus = qpci_new_pc(s, NULL);
> - g_ptr_array_foreach(fuzzable_pci_devices, pci_enum, pcibus);
> - qpci_free_pc(pcibus);
> + machine_type = object_get_typename(qdev_get_machine());
> + if(fuzzable_pci_devices->len && strstr(machine_type, "pc") ==
> machine_type)
Should at least be "pc-" --^
Maybe there's a more cannonical way to do this..
-Alex
> + {
> + pcibus = qpci_new_pc(s, NULL);
> + g_ptr_array_foreach(fuzzable_pci_devices, pci_enum, pcibus);
> + qpci_free_pc(pcibus);
> + }
>
> counter_shm_init();
> }
> --
> 2.27.0
>