[PATCH] qemu: segmentation fault in virtqemud executing qemuDomainUndefineFlags

[Michal Prívozník]

On 3/2/22 00:21, Jim Fehlig wrote:
> On 3/1/22 10:47, Boris Fiuczynski wrote:
>> Commit 5adfb3472342741c443ac91dee0abb18b5a3d038 causes a segmentation
>> fault.
>>
>> Stack trace of thread 664419:
>>   #0  0x000003ff62ec553c in qemuDomainUndefineFlags
>> (dom=0x3ff6c002810, flags=<optimized out>) at
>> ../src/qemu/qemu_driver.c:6618
>>   #1  0x000003ff876a7e5c in virDomainUndefineFlags
>> (domain=domain at entry=0x3ff6c002810, flags=<optimized out>) at
>> ../src/libvirt-domain.c:6519
>>   #2  0x000002aa2b64a808 in remoteDispatchDomainUndefineFlags
>> (server=0x2aa2c3d7880, msg=0x2aa2c3d2770, args=<optimized out>,
>> rerr=0x3ff8287b950, client=<optimized out>)
>>          at src/remote/remote_daemon_dispatch_stubs.h:13080
>>   #3  remoteDispatchDomainUndefineFlagsHelper (server=0x2aa2c3d7880,
>> client=<optimized out>, msg=0x2aa2c3d2770, rerr=0x3ff8287b950,
>> args=<optimized out>, ret=0x0)
>>          at src/remote/remote_daemon_dispatch_stubs.h:13059
>>   #4  0x000003ff8758bbf4 in virNetServerProgramDispatchCall
>> (msg=0x2aa2c3d2770, client=0x2aa2c3e3050, server=0x2aa2c3d7880,
>> prog=0x2aa2c3d8010)
>>          at ../src/rpc/virnetserverprogram.c:428
>>   #5  virNetServerProgramDispatch (prog=0x2aa2c3d8010,
>> server=server at entry=0x2aa2c3d7880, client=0x2aa2c3e3050,
>> msg=0x2aa2c3d2770) at ../src/rpc/virnetserverprogram.c:302
>>   #6  0x000003ff8758c260 in virNetServerProcessMsg (msg=<optimized
>> out>, prog=<optimized out>, client=<optimized out>, srv=0x2aa2c3d7880)
>> at ../src/rpc/virnetserver.c:140
>>   #7  virNetServerHandleJob (jobOpaque=0x2aa2c3e2d30,
>> opaque=0x2aa2c3d7880) at ../src/rpc/virnetserver.c:160
>>   #8  0x000003ff874c49aa in virThreadPoolWorker (opaque=<optimized
>> out>) at ../src/util/virthreadpool.c:164
>>   #9  0x000003ff874c3f62 in virThreadHelper (data=<optimized out>) at
>> ../src/util/virthread.c:256
>>   #10 0x000003ff86c1cf8c in start_thread () from /lib64/libc.so.6
>>   #11 0x000003ff86c9650e in thread_start () from /lib64/libc.so.6
> 
> libvirt-tck encountered the same segfault in my test environment.
> 
>> Signed-off-by: Boris Fiuczynski <fiuczy at linux.ibm.com>
>> ---
>>   src/qemu/qemu_driver.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Reviewed-by: Jim Fehlig <jfehlig at suse.com>

Pushed now. I believe, this warrants maintenance release. Jirka?

Michal