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target/ppc: init 'rmmu_info' in kvm_get_radix_page_info()

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Init the struct to avoid Valgrind complaints about unitialized bytes,
such as this one:

==39549== Syscall param ioctl(generic) points to uninitialised byte(s)
==39549==    at 0x55864E4: ioctl (in /usr/lib64/libc.so.6)
==39549==    by 0xD1F7EF: kvm_vm_ioctl (kvm-all.c:3035)
==39549==    by 0xAF8F5B: kvm_get_radix_page_info (kvm.c:276)
==39549==    by 0xB00533: kvmppc_host_cpu_class_init (kvm.c:2369)
==39549==    by 0xD3DCE7: type_initialize (object.c:366)
==39549==    by 0xD3FACF: object_class_foreach_tramp (object.c:1071)
==39549==    by 0x502757B: g_hash_table_foreach (in /usr/lib64/libglib-2.0.so.0.7000.5)
==39549==    by 0xD3FC1B: object_class_foreach (object.c:1093)
==39549==    by 0xB0141F: kvm_ppc_register_host_cpu_type (kvm.c:2613)
==39549==    by 0xAF87E7: kvm_arch_init (kvm.c:157)
==39549==    by 0xD1E2A7: kvm_init (kvm-all.c:2595)
==39549==    by 0x8E6E93: accel_init_machine (accel-softmmu.c:39)
==39549==  Address 0x1fff00e208 is on thread 1's stack
==39549==  in frame #2, created by kvm_get_radix_page_info (kvm.c:267)
==39549==  Uninitialised value was created by a stack allocation
==39549==    at 0xAF8EE8: kvm_get_radix_page_info (kvm.c:267)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220331001717.616938-5-danielhb413@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Daniel Henrique Barboza 2022-03-30 21:17:17 -03:00
parent b339427cfc
commit 55baf4b584
1 changed files with 1 additions and 1 deletions
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2
target/ppc/kvm.c
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@ -266,7 +266,7 @@ struct ppc_radix_page_info *kvm_get_radix_page_info(void)
{
KVMState *s = KVM_STATE(current_accel());
struct ppc_radix_page_info *radix_page_info;
struct kvm_ppc_rmmu_info rmmu_info;
struct kvm_ppc_rmmu_info rmmu_info = { };
int i;
if (!kvm_check_extension(s, KVM_CAP_PPC_MMU_RADIX)) {