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-rw-r--r--target/arm/arch_dump.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/target/arm/arch_dump.c b/target/arm/arch_dump.c
index 1a9861f69b..9e5b2fb31c 100644
--- a/target/arm/arch_dump.c
+++ b/target/arm/arch_dump.c
@@ -273,11 +273,18 @@ int arm_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
int cpu_get_dump_info(ArchDumpInfo *info,
const GuestPhysBlockList *guest_phys_blocks)
{
- ARMCPU *cpu = ARM_CPU(first_cpu);
- CPUARMState *env = &cpu->env;
+ ARMCPU *cpu;
+ CPUARMState *env;
GuestPhysBlock *block;
hwaddr lowest_addr = ULLONG_MAX;
+ if (first_cpu == NULL) {
+ return -1;
+ }
+
+ cpu = ARM_CPU(first_cpu);
+ env = &cpu->env;
+
/* Take a best guess at the phys_base. If we get it wrong then crash
* will need '--machdep phys_offset=<phys-offset>' added to its command
* line, which isn't any worse than assuming we can use zero, but being