{"id":1040,"date":"2019-09-16T17:17:17","date_gmt":"2019-09-16T09:17:17","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=1040"},"modified":"2019-09-16T17:21:32","modified_gmt":"2019-09-16T09:21:32","slug":"%e4%bd%bf%e7%94%a8objdump%e3%80%81readelf%e5%92%8caddr2line%e6%9d%a5%e5%ae%9a%e4%bd%8dcoredump%e6%97%b6%e7%9a%84exception%e5%bc%82%e5%b8%b8%e6%88%96kernel-panic%e5%bc%82%e5%b8%b8","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=1040","title":{"rendered":"\u4f7f\u7528objdump\u3001readelf\u548caddr2line\u6765\u5b9a\u4f4dcoredump\u65f6\u7684exception\u5f02\u5e38\u6216kernel panic\u5f02\u5e38"},"content":{"rendered":"<h2><strong>\u6a21\u62df\u7528\u6237\u5c42\u5954\u6e83<\/strong><\/h2>\n<div><\/div>\n<div><strong>\u53d1\u9001ABORT\u4fe1\u53f7\u91cf\u6765\u521b\u9020\u4e00\u4e2acoredump\u6216tombstone\u6587\u4ef6\uff1a<\/strong><\/div>\n<div># kill -6 822<\/div>\n<div># cat \/data\/tombstones\/tombstone_00<\/div>\n<div>*** Aborted<\/div>\n<div>Register dump:<\/div>\n<div>R0: fffffffc\u00a0\u00a0\u00a0R1: 00000000\u00a0\u00a0\u00a0R2: 00000002\u00a0\u00a0\u00a0R3: 00000000<\/div>\n<div>R4: 00000000\u00a0\u00a0\u00a0R5: bede5c88\u00a0\u00a0\u00a0R6: 0002f5c8\u00a0\u00a0\u00a0R7: 000000a2<\/div>\n<div>R8: 01ce8014\u00a0\u00a0\u00a0R9: 00000000\u00a0\u00a0\u00a0SL: 47728000\u00a0\u00a0\u00a0FP: 00000000<\/div>\n<div>IP: 00000000\u00a0\u00a0\u00a0SP: bede5c58\u00a0\u00a0\u00a0LR: b6f798c0\u00a0\u00a0\u00a0PC: 478a7e64<\/div>\n<div>CPSR: 800e0010<\/div>\n<div>Trap: 00000000\u00a0\u00a0\u00a0Error: 00000000\u00a0\u00a0\u00a0OldMask: 00000000<\/div>\n<div>Addr: 00000000<\/div>\n<div>Backtrace:<\/div>\n<div>\/lib\/libpthread.so.0(__nanosleep+0x44)[0x478a7e64]<\/div>\n<div>\/usr\/bin\/avinserver[0x10f64]<\/div>\n<div>\/lib\/libc.so.6(__libc_start_main+0x114)[0x4776f8fc]<\/div>\n<div>Memory map:<\/div>\n<div>00008000-00027000 r-xp 00000000 103:00 1145\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/usr\/bin\/avinserver<\/div>\n<div>0002e000-00037000 rw-p 0001e000 103:00 1145\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/usr\/bin\/avinserver<\/div>\n<div>01ce8000-01d09000 rw-p 00000000 00:00 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0[heap]<\/div>\n<div>47700000-47720000 r-xp 00000000 103:00 566\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/ld-2.20.so<\/div>\n<div>47727000-47728000 r&#8211;p 0001f000 103:00 566\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/ld-2.20.so<\/div>\n<div>47728000-47729000 rw-p 00020000 103:00 566\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/ld-2.20.so<\/div>\n<div>47730000-4774d000 r-xp 00000000 103:00 597\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libgcc_s.so.1<\/div>\n<div>4774d000-47754000 &#8212;p 0001d000 103:00 597\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libgcc_s.so.1<\/div>\n<div>47754000-47755000 rw-p 0001c000 103:00 597\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libgcc_s.so.1<\/div>\n<div>47758000-47882000 r-xp 00000000 103:00 579\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libc-2.20.so<\/div>\n<div>47882000-4788a000 &#8212;p 0012a000 103:00 579\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libc-2.20.so<\/div>\n<div>4788a000-4788c000 r&#8211;p 0012a000 103:00 579\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libc-2.20.so<\/div>\n<div>4788c000-4788e000 rw-p 0012c000 103:00 579\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libc-2.20.so<\/div>\n<div>4788e000-47890000 rw-p 00000000 00:00 0<\/div>\n<div>47898000-478ad000 r-xp 00000000 103:00 628\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libpthread-2.20.so<\/div>\n<div>478ad000-478b4000 &#8212;p 00015000 103:00 628\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libpthread-2.20.so<\/div>\n<div>478b4000-478b5000 r&#8211;p 00014000 103:00 628\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libpthread-2.20.so<\/div>\n<div>478b5000-478b6000 rw-p 00015000 103:00 628\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/lib\/libpthread-2.20.so<\/div>\n<div><\/div>\n<div><strong>\u6211\u4eec\u770bBacktrace\u90e8\u5206\u6700\u540e\u4e00\u4e2a\u8c03\u7528\u4f4d\u7f6e\uff1a<\/strong><\/div>\n<div>\/lib\/libpthread.so.0(__nanosleep+0x44)[0x478a7e64]<\/div>\n<div>\u8fd9\u91cc\u76840x478a7e64\u4e3a\u8fd0\u884c\u65f6\u5730\u5740\uff0c\u8be5\u5730\u5740\u5bf9\u5e94\/lib\/libpthread.so.0\u91cc\u9762\u7684__nanosleep()\u51fd\u6570\u504f\u79fb0x44\u4f4d\u7f6e\u3002<\/div>\n<div><\/div>\n<div><strong>\u4e0d\u7ba1\u8fd9\u4e2a\u8fd0\u884c\u65f6\u5730\u5740\uff0c\u6211\u4eec\u7528\u7f16\u8bd1\u4e3b\u673a\u7684\u5de5\u5177\u94fe\u6765objdump\u6216readelf\u6765\u67e5\u627e__nanosleep()\u51fd\u6570\u7684\u94fe\u63a5\u5730\u5740\uff08<span style=\"color: #ff0000;\">\u6ce8\uff1a\u94fe\u63a5\u5730\u5740\u548c\u8fd0\u884c\u65f6\u5730\u5740\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u5185\u6838\u4f1a\u6709\u4e00\u4e2a\u91cd\u5b9a\u4f4d\u7684\u529f\u80fd\uff0c\u628a\u94fe\u63a5\u5730\u5740\u632a\u5230\u8fd0\u884c\u65f6\u5730\u5740\u3002\u5982\u679c\u6ca1\u6709\u7528\u8c03\u8bd5\u6a21\u5f0f\u7f16\u8bd1\u6765\u52a0\u5165\u7b26\u53f7\u8868\uff0c\u5219\u53ef\u80fd\u6ca1\u6cd5\u5b9a\u4f4d\uff0c\u9664\u975e\u76f4\u63a5\u7406\u89e3\u65e0\u7b26\u53f7\u7684\u7eaf\u6c47\u7f16<\/span>\uff09\uff1a<\/strong><\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-readelf -s ..\/build\/tmp\/sysroots\/ac8317\/lib\/libpthread-2.20.so |grep __nanosleep<\/div>\n<div>\u00a0\u00a0\u00a0175: 0000fd00\u00a0\u00a0\u00a0136 FUNC\u00a0\u00a0\u00a0\u00a0WEAK\u00a0\u00a0\u00a0DEFAULT\u00a0\u00a0\u00a012 __nanosleep@@GLIBC_2.4<\/div>\n<div>\u00a0\u00a01269: 0000fce0\u00a0\u00a0\u00a0\u00a028 FUNC\u00a0\u00a0\u00a0\u00a0LOCAL\u00a0\u00a0DEFAULT\u00a0\u00a0\u00a012 __nanosleep_nocancel<\/div>\n<div>\u00a0\u00a01590: 0000fd00\u00a0\u00a0\u00a0136 FUNC\u00a0\u00a0\u00a0\u00a0WEAK\u00a0\u00a0\u00a0DEFAULT\u00a0\u00a0\u00a012 __nanosleep<\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-objdump -S ..\/build\/tmp\/sysroots\/ac8317\/lib\/libpthread-2.20.so |grep -A 30 &#8220;&lt;__nanosleep&gt;&#8221;<\/div>\n<div>0000fd00 &lt;__nanosleep&gt;:<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd00:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e59fc080\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ldr\u00a0\u00a0\u00a0\u00a0\u00a0ip, [pc, #128]\u00a0\u00a0; fd88 &lt;__local_syscall_error+0x20&gt;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd04:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e79fc00c\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ldr\u00a0\u00a0\u00a0\u00a0\u00a0ip, [pc, ip]<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd08:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e33c0000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0teq\u00a0\u00a0\u00a0\u00a0\u00a0ip, #0<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd0c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e52d7004\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0push\u00a0\u00a0\u00a0\u00a0{r7}\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; (str r7, [sp, #-4]!)<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd10:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01a000005\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bne\u00a0\u00a0\u00a0\u00a0\u00a0fd2c &lt;__nanosleep+0x2c&gt;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd14:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3a070a2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r7, #162\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; 0xa2<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd18:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ef000000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0svc\u00a0\u00a0\u00a0\u00a0\u00a00x00000000<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd1c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e49d7004\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pop\u00a0\u00a0\u00a0\u00a0\u00a0{r7}\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; (ldr r7, [sp], #4)<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd20:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3700a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cmn\u00a0\u00a0\u00a0\u00a0\u00a0r0, #4096\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; 0x1000<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd24:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0312fff1e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bxcc\u00a0\u00a0\u00a0\u00a0lr<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd28:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ea00000e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0b\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fd68 &lt;__local_syscall_error&gt;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd2c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e92d4003\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0push\u00a0\u00a0\u00a0\u00a0{r0, r1, lr}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd30:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ebfffba4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bl\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ebc8 &lt;__pthread_enable_asynccancel&gt;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd34:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e1a0c000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0ip, r0<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd38:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e8bd0003\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pop\u00a0\u00a0\u00a0\u00a0\u00a0{r0, r1}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd3c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3a070a2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r7, #162\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; 0xa2<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd40:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ef000000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0svc\u00a0\u00a0\u00a0\u00a0\u00a00x00000000<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd44:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e1a07000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r7, r0<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd48:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e1a0000c\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r0, ip<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd4c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ebfffbcc\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bl\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ec84 &lt;__pthread_disable_asynccancel&gt;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd50:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e1a00007\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r0, r7<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd54:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e49de004\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pop\u00a0\u00a0\u00a0\u00a0\u00a0{lr}\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; (ldr lr, [sp], #4)<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd58:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e49d7004\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0pop\u00a0\u00a0\u00a0\u00a0\u00a0{r7}\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; (ldr r7, [sp], #4)<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd5c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3700a01\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cmn\u00a0\u00a0\u00a0\u00a0\u00a0r0, #4096\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0; 0x1000<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ret<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd60:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0312fff1e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bxcc\u00a0\u00a0\u00a0\u00a0lr<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd64:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0eaffffff\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0b\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fd68 &lt;__local_syscall_error&gt;<\/div>\n<div><\/div>\n<div>0000fd68 &lt;__local_syscall_error&gt;:<\/div>\n<div>T_PSEUDO_END (SYSCALL_SYMBOL)<\/div>\n<div><strong>\u53ef\u4ee5\u770b\u5230\uff0c__nanosleep()\u51fd\u6570\u94fe\u63a5\u5730\u5740\u57280x0000fd00\u4f4d\u7f6e\u3002\u628a\u8be5\u94fe\u63a5\u5730\u5740\u52a0\u4e0atombstone\u91cc\u9762\u7684\u504f\u79fb0x44\uff0c\u53730x0000fd44\u4e3a\u51fa\u9519\u7684\u4f4d\u7f6e\u3002\u5176\u5b9e\u4eceobjdump\u5df2\u7ecf\u53ef\u4ee5\u770b\u51fa\u51fa\u9519\u7684\u662f<\/strong><\/div>\n<div>\u00a0\u00a0\u00a0\u00a0fd44:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e1a07000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r7, r0<\/div>\n<div>\u8fd9\u4e00\u884c\u3002<\/div>\n<div><\/div>\n<div><strong>\u6839\u636e0x0000fd44\u7528addr2line\u6765\u5b9a\u4f4d\u6e90\u4ee3\u7801\u7684\u6587\u4ef6\u548c\u884c\u53f7\uff1a<\/strong><\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-addr2line -e ..\/build\/tmp\/sysroots\/ac8317\/lib\/libpthread-2.20.so -a -f -p\u00a0\u00a00x0000fd44<\/div>\n<div>0x0000fd44: $a at \/extended\/disk9\/android19\/maxshu\/linux_compile\/linux_alios_bm\/sources\/build\/tmp\/work\/armv7a-vfp-neon-poky-linux-gnueabi\/glibc\/2.20-r0\/git\/nptl\/..\/sysdeps\/unix\/syscall-template.S:81<\/div>\n<div>\u53ef\u4ee5\u770b\u5230\u662fsyscall-template.S\u7684\u7b2c81\u884c\u3002<\/div>\n<div><\/div>\n<div><strong>\u6253\u5f00\u8be5\u6e90\u6587\u4ef6\u770b\u770b\uff1a<\/strong><\/div>\n<div>76 #else<\/div>\n<div>77<\/div>\n<div>78 \/* This is a &#8220;normal&#8221; system call stub: if there is an error,<\/div>\n<div>79\u00a0\u00a0\u00a0\u00a0it returns -1 and sets errno.\u00a0\u00a0*\/<\/div>\n<div>80<\/div>\n<div>81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)<\/div>\n<div>82\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ret<\/div>\n<div>83 T_PSEUDO_END (SYSCALL_SYMBOL)<\/div>\n<div>84<\/div>\n<div>85 #endif<\/div>\n<div>\u53ef\u4ee5\u770b\u5230\u662f\uff1a<\/div>\n<div>T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)<\/div>\n<div>\u8fd9\u91cc\u51fa\u9519\u7684\u3002<\/div>\n<div>\n<div>\u5176\u5b9e__nanosleep()\u770b\u6e90\u4ee3\u7801\uff0c\u5c31\u662f\u7528syscall\u65b9\u5f0f\u8fdb\u5165\u4e86\u5185\u6838\u6001\uff0c\u4ece\u7528\u6237\u5c42\u8ddf\u4e0d\u5230\u4e86\uff1a<\/div>\n<div>\/* Pause execution for a number of nanoseconds.\u00a0\u00a0*\/<\/div>\n<div>int<\/div>\n<div>__nanosleep (const struct timespec *requested_time,<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0struct timespec *remaining)<\/div>\n<div>{<\/div>\n<div>\u00a0\u00a0return SYSCALL_CANCEL (nanosleep, requested_time, remaining);<\/div>\n<div>}<\/div>\n<div>hidden_def (__nanosleep)<\/div>\n<div>weak_alias (__nanosleep, nanosleep)<\/div>\n<div><\/div>\n<\/div>\n<div>\u5f53\u7136\u8be5\u4f8b\u5b50\u56e0\u4e3a\u662f\u7528\u4fe1\u53f7\u91cf\u6a21\u62df\u7684\u5f02\u5e38\uff0c\u6240\u4ee5\u8fd9\u4e2a\u9000\u51fa\u5176\u5b9e\u4e5f\u662f\u6b63\u5e38\u7684\u7cfb\u7edf\u8c03\u7528\u3002<\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<div><\/div>\n<h2><strong>\u6a21\u62df\u5185\u6838\u5954\u6e83<\/strong><\/h2>\n<div><strong>\u7528\u4e2d\u65ad\u6765\u89e6\u53d1panic\u9519\u8bef\uff0c\u5bfc\u81f4\u5185\u6838\u5954\u6e83\uff0c\u91cd\u542f\u540e\u4f1a\u6709coredump\u6216\u4e0a\u6b21\u5185\u6838\u9519\u8bef\u7684log\uff1a<\/strong><\/div>\n<div># echo c &gt; \/proc\/sysrq-trigger<\/div>\n<div>&#8216;Kernel Exception: sysrq_handle_crash+0x14\/0x20&#8217; ..collect DB<\/div>\n<div>.[bt]: [&lt;c0008524&gt;] do_DataAbort+0x84\/0x104<\/div>\n<div>.[bt]: [&lt;c0012718&gt;] __dabt_svc+0x38\/0x60<\/div>\n<div>.[bt]: [&lt;c024a650&gt;] sysrq_handle_crash+0x14\/0x20<\/div>\n<div>.[bt]: [&lt;c024acfc&gt;] __handle_sysrq+0x88\/0x124<\/div>\n<div><\/div>\n<div><strong>\u6211\u4eec\u770b\u5f02\u5e38\u51fa\u73b0\u4f4d\u7f6e\uff1a<\/strong><\/div>\n<div>.[bt]: [&lt;c024a650&gt;] sysrq_handle_crash+0x14\/0x20<\/div>\n<div>\u8fd9\u91cc\u7684c024a650\u4e3a\u8fd0\u884c\u65f6\u5730\u5740\uff0c\u8be5\u5730\u5740\u5bf9\u5e94\u5185\u6838vmlinux.bin\u91cc\u9762\u7684sysrq_handle_crash()\u51fd\u6570\u504f\u79fb0x14\u4f4d\u7f6e\u3002<\/div>\n<div><\/div>\n<div><strong>\u4e0d\u7ba1\u8fd9\u4e2a\u8fd0\u884c\u65f6\u5730\u5740\uff0c\u6211\u4eec\u7528\u7f16\u8bd1\u4e3b\u673a\u7684\u5de5\u5177\u94fe\u6765objdump\u6216readelf\u6765\u67e5\u627esysrq_handle_crash()\u51fd\u6570\u7684\u94fe\u63a5\u5730\u5740\uff08\u6ce8\uff1a\u94fe\u63a5\u5730\u5740\u548c\u8fd0\u884c\u65f6\u5730\u5740\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u5185\u6838\u4f1a\u6709\u4e00\u4e2a\u91cd\u5b9a\u4f4d\u7684\u529f\u80fd\uff0c\u628a\u94fe\u63a5\u5730\u5740\u632a\u5230\u8fd0\u884c\u65f6\u5730\u5740\uff09\uff1a<\/strong><\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-readelf -s ..\/image-release\/vmlinux.bin |grep sysrq_handle_crash<\/div>\n<div>\u00a0\u00a06449: c0248b5c\u00a0\u00a0\u00a0\u00a032 FUNC\u00a0\u00a0\u00a0\u00a0LOCAL\u00a0\u00a0DEFAULT\u00a0\u00a0\u00a0\u00a02 sysrq_handle_crash<\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-objdump -S ..\/image-release\/vmlinux.bin |grep -A 30 &#8220;&lt;sysrq_handle_crash&gt;&#8221;<\/div>\n<div>c0248b5c &lt;sysrq_handle_crash&gt;:<\/div>\n<div><\/div>\n<div>static void sysrq_handle_crash(int key)<\/div>\n<div>{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0char *killer = NULL;<\/div>\n<div><\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0panic_on_oops = 1;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/* force panic *\/<\/div>\n<div>c0248b5c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e59f2014\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ldr\u00a0\u00a0\u00a0\u00a0\u00a0r2, [pc, #20]\u00a0\u00a0\u00a0; c0248b78 &lt;sysrq_handle_crash+0x1c&gt;<\/div>\n<div>c0248b60:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3a03001\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r3, #1<\/div>\n<div>c0248b64:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e5823000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0str\u00a0\u00a0\u00a0\u00a0\u00a0r3, [r2]<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0wmb();<\/div>\n<div>c0248b68:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0f57ff04e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0dsb\u00a0\u00a0\u00a0\u00a0\u00a0st<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0*killer = 1;<\/div>\n<div>c0248b6c:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e3a02000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mov\u00a0\u00a0\u00a0\u00a0\u00a0r2, #0<\/div>\n<div>c0248b70:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e5c23000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0strb\u00a0\u00a0\u00a0\u00a0r3, [r2]<\/div>\n<div>c0248b74:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e12fff1e\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0bx\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0lr<\/div>\n<div>c0248b78:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0c08692f4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0.word\u00a0\u00a0\u00a00xc08692f4<\/div>\n<div><strong>\u53ef\u4ee5\u770b\u5230\uff0csysrq_handle_crash()\u51fd\u6570\u94fe\u63a5\u5730\u5740\u57280xc0248b5c\u4f4d\u7f6e\u3002\u628a\u8be5\u94fe\u63a5\u5730\u5740\u52a0\u4e0apanic\u91cc\u9762\u7684\u504f\u79fb0x14\uff0c\u53730xc0248b70\u4e3a\u51fa\u9519\u7684\u4f4d\u7f6e\u3002\u5176\u5b9e\u4eceobjdump\u5df2\u7ecf\u53ef\u4ee5\u770b\u51fa\u51fa\u9519\u7684\u662f<\/strong><\/div>\n<div>c0248b70:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e5c23000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0strb\u00a0\u00a0\u00a0\u00a0r3, [r2]<\/div>\n<div>\u8fd9\u4e00\u884c\u3002<\/div>\n<div><\/div>\n<div><strong>\u6839\u636e0xc0248b70\u7528addr2line\u6765\u5b9a\u4f4d\u6e90\u4ee3\u7801\u7684\u6587\u4ef6\u548c\u884c\u53f7\uff1a<\/strong><\/div>\n<div>$ ..\/build\/tmp\/sysroots\/x86_64-linux\/usr\/bin\/arm-poky-linux-gnueabi\/arm-poky-linux-gnueabi-addr2line -e ..\/image-release\/vmlinux.bin -a -f -p\u00a0\u00a00xc0248b70<\/div>\n<div>0xc0248b70: sysrq_handle_crash at \/extended\/disk9\/android19\/maxshu\/linux_compile\/linux_alios_bm\/atc_linux\/kernel\/kernel-3.18\/drivers\/tty\/sysrq.c:141<\/div>\n<div>\u53ef\u4ee5\u770b\u5230\u662fsysrq.c\u7684\u7b2c141\u884c\u5bfc\u81f4\u3002<\/div>\n<div><\/div>\n<div><strong>\u4ece\u8be5\u6e90\u6587\u4ef6\u53ef\u4ee5\u770b\u5230\u662f\uff1a<\/strong><\/div>\n<div>135 static void sysrq_handle_crash(int key)<\/div>\n<div>136 {<\/div>\n<div>137\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0char *killer = NULL;<\/div>\n<div>138<\/div>\n<div>139\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0panic_on_oops = 1;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/* force panic *\/<\/div>\n<div>140\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0wmb();<\/div>\n<div>141\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0*killer = 1;<\/div>\n<div>142 }<\/div>\n<div>\u8fd9\u91cc\u51fa\u9519\u7684\uff0c\u5176\u672c\u8d28\u8fd8\u662f\u4e00\u4e2a\u6b63\u5e38\u64cd\u4f5c\uff0c\u7528\u6765\u6a21\u62dfpanic\u65b9\u5f0f\u3002<\/div>\n<div>\u5f53\u7136\u8be5\u4f8b\u5b50\u56e0\u4e3a\u662f\u7528\u4e2d\u65ad\u6a21\u62df\u89e6\u53d1\u7684panic\u5f02\u5e38\uff0c\u6240\u4ee5\u8fd9\u91cc\u5f3a\u5236panic\u540e\u9000\u51fa\u3002<\/div>\n<div><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6a21\u62df\u7528\u6237\u5c42\u5954\u6e83 \u53d1\u9001ABORT\u4fe1\u53f7\u91cf\u6765\u521b\u9020\u4e00\u4e2acoredump\u6216tombstone\u6587\u4ef6\uff1a # kill -6  &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[768,771,769,773,770,772,774,397],"class_list":["post-1040","post","type-post","status-publish","format-standard","hentry","category-linuxandroid","tag-addr2line","tag-coredump","tag-objdump","tag-panic","tag-readelf","tag-tombstone","tag-774","tag-397"],"views":2949,"_links":{"self":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1040","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1040"}],"version-history":[{"count":2,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1040\/revisions"}],"predecessor-version":[{"id":1043,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1040\/revisions\/1043"}],"wp:attachment":[{"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1040"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1040"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.max-shu.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1040"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}