diff options
| author | Laurent Vivier <lvivier@redhat.com> | 2017-09-13 16:20:33 +0200 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2017-09-14 15:52:10 +0100 |
| commit | b1fde1ef5106c92dd12f1f0cfcb8c76e57d7f681 (patch) | |
| tree | d49d64892eb4939a3ee73e4ee6b8f1b211b8ad5f /target/ppc/arch_dump.c | |
| parent | 9d81b2d2000f41be55a0624a26873f993fb6e928 (diff) | |
hmp: fix "dump-quest-memory" segfault (ppc)
Running QEMU with
qemu-system-ppc64 -M none -nographic -m 256
and executing
dump-guest-memory /dev/null 0 8192
results in segfault
Fix by checking if we have CPU, and exit with
error if there is no CPU:
(qemu) dump-guest-memory /dev/null
this feature or command is not currently supported
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20170913142036.2469-2-lvivier@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'target/ppc/arch_dump.c')
| -rw-r--r-- | target/ppc/arch_dump.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/target/ppc/arch_dump.c b/target/ppc/arch_dump.c index 8e9397aa58..95b9ab6f29 100644 --- a/target/ppc/arch_dump.c +++ b/target/ppc/arch_dump.c @@ -224,8 +224,15 @@ typedef struct NoteFuncDescStruct NoteFuncDesc; int cpu_get_dump_info(ArchDumpInfo *info, const struct GuestPhysBlockList *guest_phys_blocks) { - PowerPCCPU *cpu = POWERPC_CPU(first_cpu); - PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); + PowerPCCPU *cpu; + PowerPCCPUClass *pcc; + + if (first_cpu == NULL) { + return -1; + } + + cpu = POWERPC_CPU(first_cpu); + pcc = POWERPC_CPU_GET_CLASS(cpu); info->d_machine = PPC_ELF_MACHINE; info->d_class = ELFCLASS; |