jvm crash 报错 sigsegv (0xb) 分析原因
在分析 jvm crash 错误 sigsegv (0xb) 时，我们遇到了以下 hs_err_pidxxx.log 文件：
# # A fatal error has been detected by the Java Runtime Environment: # # SIGSEGV (0xb) at pc=0x00007f5e94bd20a7, pid=752, tid=140036367759104 # # JRE version: Java(TM) SE Runtime Environment (8.0_60-b27) (build 1.8.0_60-b27) # Java VM: Java HotSpot(TM) 64-Bit Server VM (25.60-b23 mixed mode linux-amd64 compressed oops) # Problematic frame: # V [libjvm.so+0x6340a7] IfNode::up_one_dom(Node*, bool)+0x97 # # Core dump written. Default location: /home/admin/core or core.752 # # If you would like to submit a bug report, please visit: # http://bugreport.java.com/bugreport/crash.jsp # --------------- T H R E A D --------------- Current thread (0x00007f5e9050e000): JavaThread "C2 CompilerThread7" daemon [_thread_in_native, id=942, stack(0x00007f5cc1e4b000,0x00007f5cc1f4c000)] siginfo: si_signo: 11 (SIGSEGV), si_code: 1 (SEGV_MAPERR), si_addr: 0x000000000000002c Registers: RAX=0x00007f5c80ec2780, RBX=0x00007f5c80a98a38, RCX=0x0000000000000000, RDX=0x0000000000000000 RSP=0x00007f5cc1f46c70, RBP=0x00007f5cc1f46c70, RSI=0x0000000000000000, RDI=0x00007f5c806141f8 R8 =0x0000000000000fbc, R9 =0x0000000000000001, R10=0x0000000000000001, R11=0x00007f5cc1f49bf0 R12=0x00007f5c80ab2418, R13=0x00007f5cc1f47a00, R14=0x0000000000000000, R15=0x00007f5c806141f8 RIP=0x00007f5e94bd20a7, EFLAGS=0x0000000000010246, CSGSFS=0x002b000000000033, ERR=0x0000000000000004 TRAPNO=0x000000000000000e Top of Stack: (sp=0x00007f5cc1f46c70) 0x00007f5cc1f46c70: 00007f5cc1f46f00 00007f5e94bd374d 0x00007f5cc1f46c80: 00007f5cc1f46cb0 00007f5e94e87972 0x00007f5cc1f46c90: 00007f5cc1f46cd0 00007f5e94e88016 0x00007f5cc1f46ca0: 00007f5cc1f47a00 00007f5c00000000 0x00007f5cc1f46cb0: 00007f5c80ab4138 0000007c00000017 0x00007f5cc1f46cc0: 00007f5cc1f47a00 00007f5e94f03dc0 0x00007f5cc1f46cd0: 00007f5c80ab2480 00007f5c80ab2500 0x00007f5cc1f46ce0: 0000000000000001 00007f5e9050e460 0x00007f5cc1f46cf0: 00007f5c00000001 00007f5cc1f483d8 0x00007f5cc1f46d00: 00007f5cc1f46d40 00007f5e94e88016 0x00007f5cc1f46d10: 00007f5cc1f483f8 00007f5c80ab4470 0x00007f5cc1f46d20: 0000000000000000 0000000000000001 0x00007f5cc1f46d30: 00007f5c80ab4470 00007f5cc1f47a00 0x00007f5cc1f46d40: 00007f5cc1f46db0 00007f5e94f019dc 0x00007f5cc1f46d50: 00007f5c80ce3160 00007f5cc1f48380 0x00007f5cc1f46d60: 00007f5cc1f46db0 00007f5cc1f483d8 0x00007f5cc1f46d70: 00007f5cc1f48380 00007f5cc1f48418 0x00007f5cc1f46d80: 00007f5cc1f483f8 00007f5c80ab3588 0x00007f5cc1f46d90: 00007f5c80ce3160 0000000000000001 0x00007f5cc1f46da0: 00007f5c80ce3478 00007f5c80ab4470 0x00007f5cc1f46db0: 00007f5c80ab2138 00007f5c80ab2180
