Is there any way logging without a mutex

[psionic12]

I got some special case here:
I got two threads both use glog, but one thread may be interrupted by signal, and there's a chance that I got error like this:

PC: @     0x7f0fdbfa9e97 gsignal
*** SIGABRT (@0x3e800000888) received by PID 2184 (TID 0x7f0fda3c9700) from PID 2184; stack trace: ***
    @     0x7f0fdc90f890 (unknown)
    @     0x7f0fdbfa9e97 gsignal
    @     0x7f0fdbfab801 abort
    @     0x55e900883539 glog_internal_namespace_::Mutex::Lock()
    @     0x55e900883626 glog_internal_namespace_::MutexLock::MutexLock()
    @     0x55e90087eefc google::LogMessage::Flush()
    @     0x55e90087ed6d google::LogMessage::~LogMessage()
    @     0x55e90086ed93 stop_handler()
    @     0x7f0fdc90f890 (unknown)
    @     0x7f0fdc07b187 __write
    @     0x7f0fdbff61bd _IO_file_write
    @     0x7f0fdbff6b2f _IO_file_xsputn
    @     0x7f0fdbfea977 fwrite
    @     0x55e90087c7b9 google::ColoredWriteToStderr()
    @     0x55e90087f282 google::LogMessage::SendToLog()
    @     0x55e90087ef77 google::LogMessage::Flush()
    @     0x55e90087ed6d google::LogMessage::~LogMessage()

I think this is caused by some mutex condition or some thing.

So any way I can logging without a mutex? And the consequences like ill format is acceptable.