如何解决munmap_chunk（）：C ++中无效的指针错误 [英] How to solve munmap_chunk(): invalid pointer error in C++
本文介绍了如何解决munmap_chunk（）：C ++中无效的指针错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在C ++其中尝试使用与SVMLight实现了分类模型，以增加重量值，它可以使用了OpenCV的下HOG Calssificator应用程序和OpenCV。
问题是，当我运行应用程序，我得到这个错误：
./ main转换模型文件.. 。
1％3％4％5％7％8％9％11％12％13％15％16％18％19％20％22％23％24％26％27％28％30％ ％32％34％35％36％38％39％40％42％43％45％46％47％49％50％51％53％54％55％57％58％59％61％62％63％65 ％66％67％69％70％72％73％74％76％77％78％80％81％82％84％85％86％88％89％90％92％93％94％96％97％99％ ％100％跳过
行
***检测到glibc *** ./main：munmap_chunk（）：无效指针：
0x09926218 ***
====== = Backtrace：========= /lib/libc.so.6(+0x6c501)[0xb6a3d501]
/lib/libc.so.6(+0x6d77e）[0xb6a3e77e]
/usr/lib/tls/libnvidia-tls.so.260.19.26(+0xa20)[0xb4116a20]
./main(_ZN9__gnu_cxx13new_allocatorIfE10deallocateEPfj+0x11)[0x804f7ab]
./main(_ZNSt12_Vector_baseIfSaIfEE13_M_deallocateEPfj+0x25） [0x804f075]
./main(_ZNSt12_Vector_baseIfSaIfEED2Ev+0x37)[0x804e9f1]
./main(_ZNSt6vectorIfSaIfEED1Ev+0x38)[0x804e46a]
./main[0x804bf65]
/ lib中/ libc.so.6（__ libc_start_main + 0xe7）[0xb69e7ce7]
./main[0x804bd11]
=======内存映射：======== 08048000-08052000 r- XP 00000000 8点01
27272122
/家用/ roccog / HOGImplementation / HOGTrainer /主
08052000-08053000 - [R - p 00009000 8点01
27272122
/家庭/ roccog / HOGImplementation / HOGTrainer /主
08053000-08054000 RW-p 0000a000 8点01
27272122
/家用/ roccog / HOGImplementation / HOGTrainer /主
098dd000-0994a000 RW- p 00000000 0时
0堆] b2387000-b238d000
RW-p 00000000 0时0
b238d000-b23dc000 R-XP 00000000 8点01
16386856的/ usr / lib / libXt.so.6.0.0
b23dc000-b23dd000 r - p 0004e000 08:01
16386856 /usr/lib/libXt.so.6.0.0
b23dd000-b23e0000 rw- p 0004f000 8点01
16386856 /usr/lib/libXt.so.6.0.0
b23e0000-RW b23e1000-p 00000000零点00
0 b23e1000-b2422000 R-XP 00000000
8时01 16392261
/usr/lib/libQtXml.so.4.7.0
b2422000-b2423000 - [R - p 00041000 8点01
16392261 /usr/lib/libQtXml.so .4.7.0
b2423000-b2424000 rw-p 00042000 08:01
16392261 /usr/lib/libQtXml.so.4.7.0
b2424000-b243e000 r-xp 00000000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b243e000-b2440000 r - p 0001a000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b2440000- b2441000 rw-p 0001c000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b2441000-b2491000 rw-p 00000000 00:00
0 b2491000-b2496000 r-xp 00000000
08:01 16387500
/usr/lib/libogg.so.0.7.0
b2496000-b2497000 r - p 00004000 08:01
16387500 / usr / lib / libogg。 so.0.7.0
b2497000-b2498000 rw-p 00005000 08:01
16387500 /usr/lib/libogg.so.0.7.0
b2498000-b24eb000 r-xp 00000000 08:01
16387509
/usr/lib/liborc-0.4.so.0.0.0
b24eb000-b24ec000 r - p 00052000 08:01
16387509
/ usr / lib / liborc-0.4.so.0.0.0
b24ec000-b24ef000 rw-p 00053000 08:01
16387509
/usr/lib/liborc-0.4.so.0.0.0
b24ef000-b24f0000 rw-p 00000000 00:00
0 b24f0000-b24f4000 r-xp 00000000
08:01 16386828
/usr/lib/libXdmcp.so.6.0.0
b24f4000-b24f5000 r - p 00003000 08:01
16386828 /usr/lib/libXdmcp.so.6.0.0
b24f5000-b24f6000 rw-p 00004000 08:01
16386828 / usr / lib / libXdmcp.so.6.0.0
b24f6000-b24f8000 r-xp 00000000 08:01
16386817 /usr/lib/libXau.so.6.0.0
b24f8000-b24f9000 r --p 00001000 08:01
16386817 /usr/lib/libXau.so.6.0.0
b24f9000-b24fa000 rw-p 00002000 08:01
16386817 / usr / lib / libXau。 so.6.0.0
b24fa000-b250f000 r-xp 00000000 08:01
16391993 /usr/lib/libaudio.so.2.4
b250f000-b2510000 r - p 00015000 08:01
16391993 /usr/lib/libaudio.so.2.4
b2510000-b2511000 rw-p 00016000 08:01
16391993 /usr/lib/libaudio.so.2.4
b2511000-b258a000 r-xp 00000000 08:01
16392274 /usr/lib/libQtDBus.so.4.7.0
b258a000-b258b000 r - p 00079000 08:01
16392274 / usr / lib / libQtDBus .so.4.7.0
b258b000-b258c000 rw-p 0007a000 08:01
16392274 /usr/lib/libQtDBus.so.4.7.0
b258c000-b2592000 r-xp 00000000 08： 01
16387729 /usr/lib/libv4l2.so.0
b2592000-b2593000 r - p 00005000 08:01
16387729 /usr/lib/libv4l2.so.0
b2593000-b2597000 rw-p 00006000 08:01
16387729 /usr/lib/libv4l2.so.0
b2597000-b2598000 rw-p 00000000 00:00
0 b2598000-b25a3000 r-xp 00000000
08:01 4456631
/lib/libusb-1.0.so.0.0.0
b25a3000-b25a4000 r - p 0000a000 08:01
4456631 / lib / libusb- 1.0.so.0.0.0
b25a4000-b25a5000 rw-p 0000b000 08:01
4456631 /lib/libusb-1.0.so.0.0.0
b25a5000-b2630000 r-xp 00000000 08 ：01
16392999 /usr/lib/libvpx.so.0.9.5
b2630000-b2631000 r - p 0008b000 08:01
16392999 /usr/lib/libvpx.so.0.9。 5
b2631000-b2632000 rw-p 0008c000 08:01
16392999 /usr/lib/libvpx.so.0.9.5
b2632000-b263c000 rw-p 00000000 00:00
0 b263c000-b2662000 r-xp 00000000
08:01 16387736
/usr/lib/libvorbis.so.0.4.4
b2662000-b2663000 r - p 00025000 08:01
16387736 /usr/lib/libvorbis.so.0.4.4
b2663000-b2664000 rw-p 00026000 08:01
16387736 /usr/lib/libvorbis.so.0.4.4
b2664000 -b27c9000 r-xp 00000000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27c9000-b27ca000 --- p 00165000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27ca000-b27db000 r - p 00165000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0 .7
b27db000-b27dc000 rw-p 00176000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27dc000-b27f4000 r-xp 00000000 08： 01
16387697
/usr/lib/libtheoradec.so.1.1.4
b27f4000-b27f5000 r - p 00017000 08:01
16387697
/ usr / lib /libtheoradec.so.1.1.4
b27f5000-b27f6000 rw-p 00018000 08:01
16387697
/usr/lib/libtheoradec.so.1.1.4
b27f6000-b27f7000 rw-p 00000000 00:00
0 b27f7000-b2839000 r-xp 00000000
08:01 16387699
/usr/lib/libtheoraenc.so.1.1.2
b2839000-b283a000 r - p 00041000 08:01
16387699
/usr/lib/libtheoraenc.so.1.1.2
b283a000-b283b000 rw-p 00042000 08:01
16387699
/usr/lib/libtheoraenc.so.1.1.2
b283b000-b2856000 r-xp 00000000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5。 0
b2856000-b2857000 r - p 0001a000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5.0
b2857000-b2858000 rw-p 0001b000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5.0
b2858000-b28f5000 r-xp 00000000 08:01
16392994
/ usr / lib / libschroedinger-1.0.so.0.3.0
b28f5000-b28f6000 --- p 0009d000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3。 0
b28f6000-b28f7000 r - p 0009d000 08:01
16392994
/usr/lib/libschroedinger1.0.so.0.3.0
b28f7000-b28f8000 rw-p 0009e000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3.0
b28f8000-b28f9000 rw-p 00000000 00:00
0 b28f9000-b2905000 r- xp 00000000
08:01 16392992
/usr/lib/libgsm.so.1.0.12
b2905000-b2906000 r - p 0000b000 08:01
16392992 / usr / lib /libgsm.so.1.0.12
b2906000-b2907000 rw-p 0000c000 08:01
16392992 /usr/lib/libgsm.so.1.0.12
b2907000-b290c000 r-xp 00000000 08:01
16392996 /usr/lib/libva.so.1.0.1
b290c000-b290d000 r - p 00004000 08:01
16392996 /usr/lib/libva.so.1.0 .1
b290d000-b290e000 rw-p 00005000 08:01
16392996 /usr/lib/libva.so.1.0.1
b290e000-b290f000 rw-p 00000000 00:00
0 b290f000-b2933000 r-xp 00000000
08:01 4456520
/lib/libexpat.so.1.5.2
b2933000-b2935000 r - p 00024000 08:01
4456520 /lib/libexpat.so.1.5.2
b2935000-b2936000 rw-p 00026000 08:01
4456520 /lib/libexpat.so.1.5.2
b2936000-b293c000 r-xp 00000000 08:01
16387775
/usr/lib/libxcb-render.so.0.0.0
b293c000-b293d000 r - p 00005000 08:01
16387775
/usr/lib/libxcb-render.so.0.0.0
b293d000-b293e000 rw-p 00006000 08:01
16387775
/usr/lib/libxcb-render.so.0.0 .0
b293e000-b2940000 r-xp 00000000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2940000-b2941000 r - p 00001000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2941000-b2942000 rw-p 00002000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2942000-b299e000 r-xp 00000000 08:01
16387543
/usr/lib/libpixman-1.so.0.18。 4Aborted
很奇怪，因为它成功地创建了我需要的文件， / p>
这是我使用的代码：
vector< float&测试;
loadSVMfromModelFile（model，& test）; // model是使用SVM_Light创建的文件
//从SVMlight加载文件并将加载的支持向量转换为权重向量。
void loadSVMfromModelFile（const char * filename，vector< float> * svm）{
ifstream svinstr（filename）;
string line;
float d，g，s，r，b;
int maxidx，numtrain，numsvm，type;
int cur_svidx = 0;
getline（svinstr，line）;
line.clear（）;
svinstr>>类型;
if（type！= 0）{
cout<< 错误：仅支持线性SVM< endl;
return;
}
getline（svinstr，line）;
svinstr>> d; //内核参数d ...
line.clear（）;
getline（svinstr，line）;
svinstr>> g;
line.clear（）;
getline（svinstr，line）;
svinstr>> s;
line.clear（）;
getline（svinstr，line）;
svinstr>> r;
line.clear（）;
getline（svinstr，line）;
line.clear（）;
getline（svinstr，line）;
svinstr>> maxidx; // highest feature idx
line.clear（）;
getline（svinstr，line）;
svinstr>> numtrain; // num of training vecs
line.clear（）;
getline（svinstr，line）;
svinstr>> numsvm; // num of support vecs
line.clear（）;
getline（svinstr，line）;
svinstr>> b; // bias b;
line.clear（）;
getline（svinstr，line）;
line.clear（）;
svm-> clear（）;
svm-> resize（maxidx + 1，0）;
（* svm）[maxidx] = -b;
while（！svinstr.eof（））
{
cur_svidx ++;
if（cur_svidx％20 == 0）
{
cout< cvRound（（double）cur_svidx /（double）numsvm * 100） ％; $ c $ b flush（cout）;
}
getline（svinstr，line）;
if（line.size（）< 5）{
cout< 跳过行<< endl;
continue;
}
istringstream strstream（line）;
float ftemp;
int itemp;
double alpha;
strstream>> α;
int lastitemp = -1;
while（！strstream.eof（））{
strstream>> itemp;
if（itemp == lastitemp）{
break;
}
lastitemp = itemp;
char x;
strstream>> X;
strstream>> ftemp;
（* svm）[itemp-1] + = alpha * ftemp;
}
svinstr.sync（）;
}
}
编辑：这是valgrind输出的内容：
valgrind --leak-check = yes ./main
== 27668 == Memcheck，内存错误检测器
== 27668 ==版权所有（C）2002-2010，和GNU GPL'd，by Julian Seward et al。
== 27668 ==使用Valgrind-3.6.0.SVN-Debian和LibVEX;重新运行-h版权信息
== 27668 ==命令：./main
== 27668 ==
转换模型文件...
== 27668 ==无效读取大小4
== 27668 == at 0x804C6A6：loadSVMfromModelFile（char const *，std :: vector< float，std :: allocator< float>> *）（main.cpp：182）
== 27668 == by 0x804BF44：main（main.cpp：67）
== 27668 ==地址0x9f38844是一个大小为15,124的块之前的4个字节alloc'd
== 27668 == at 0x4026351：operator new（unsigned int）（vg_replace_malloc.c：255）
== 27668 == by 0x804F8C5：__gnu_cxx :: new_allocator< float> :: allocate（unsigned int，void const *）（new_allocator.h： 89）
== 27668 == by 0x804F627：std :: _ Vector_base< float，std :: allocator< float> > :: __ M_allocate（unsigned int）（在/ home / roccog / HOGImplementation / HOGTrainer / main）
== 27668 == by 0x804F2ED：std :: vector< float，std :: allocator& > :: _ M_fill_insert（__ gnu_cxx :: __ normal_iterator< float *，std :: vector< float，std :: allocator< float>>，unsigned int，float const&）（vector.tcc：414）
== 27668 == by 0x804EABD：std :: vector< float，std :: allocator< float> > :: insert（__ gnu_cxx :: __ normal_iterator< float *，std :: vector< float，std :: allocator< float>>，unsigned int，float const&）（stl_vector.h：859）
== 27668 == by 0x804E54F：std :: vector< float，std :: allocator< float> > :: resize（unsigned int，float）（stl_vector.h：558）
== 27668 == by 0x804C4D5：loadSVMfromModelFile（char const *，std :: vector< float，std :: allocator& > *）（main.cpp：152）
== 27668 == by 0x804BF44：main（main.cpp：67）
== 27668 ==
== 27668 == Invalid写入大小4
== 27668 == at 0x804C6C4：loadSVMfromModelFile（char const *，std :: vector< float，std :: allocator< float>> *）（main.cpp：182）
== 27668 == by 0x804BF44：main（main.cpp：67）
== 27668 ==地址0x9f38844是一个大小为15,124的块之前的4个字节alloc'd
== 27668 == at 0x4026351：operator new（unsigned int）（vg_replace_malloc.c：255）
== 27668 == by 0x804F8C5：__gnu_cxx :: new_allocator< float> :: allocate（unsigned int，void const *）（new_allocator.h： 89）
== 27668 == by 0x804F627：std :: _ Vector_base< float，std :: allocator< float> > :: __ M_allocate（unsigned int）（在/ home / roccog / HOGImplementation / HOGTrainer / main）
== 27668 == by 0x804F2ED：std :: vector< float，std :: allocator& > :: _ M_fill_insert（__ gnu_cxx :: __ normal_iterator< float *，std :: vector< float，std :: allocator< float>>，unsigned int，float const&）（vector.tcc：414）
== 27668 == by 0x804EABD：std :: vector< float，std :: allocator< float> > :: insert（__ gnu_cxx :: __ normal_iterator< float *，std :: vector< float，std :: allocator< float>>，unsigned int，float const&）（stl_vector.h：859）
== 27668 == by 0x804E54F：std :: vector< float，std :: allocator< float> > :: resize（unsigned int，float）（stl_vector.h：558）
== 27668 == by 0x804C4D5：loadSVMfromModelFile（char const *，std :: vector< float，std :: allocator& > *）（main.cpp：152）
== 27668 == by 0x804BF44：main（main.cpp：67）
== 27668 ==
1％3％4％ 5％7％8％9％11％12％13％15％16％18％19％20％22％23％24％26％27％28％30％31％32％34％35％36％ 39％40％42％43％45％46％47％49％50％51％53％54％55％57％58％59％61％62％63％65％66％67％69％ 73％74％76％77％78％80％81％82％84％85％86％88％89％90％92％93％94％96％97％99％100％跳过行
编辑2：
As valgrind输出：
＃
== 27668 ==无效读取大小4
== 27668 == at 0x804C6A6：loadSVMfromModelFile（char const *，std :: vector> *）（main.cpp：
== 27668 == by 0x804BF44：main（main.cpp：67）
＃
line 182：（* svm）[itemp-1] + = alpha * ftemp;
然后：
b
$ b
== 27668 == by 0x804BF44：main（main.cpp：67）
== 27668 ==地址0x9f38844是一个大小为15,124的块之前的4个字节alloc_d
== 27668 == at 0x4026351：operator new（unsigned int）（vg_replace_malloc.c：255）
== 27668 == by 0x804F8C5：__gnu_cxx :: new_allocator :: allocate（unsigned int，void const * ）（new_allocator.h：89）
＃
第67行：
矢量测试;
loadSVMfromModelFile（model，& test）;
解决方案
free（）无效或已以某种方式修改。我真的不知道这里的细节。底线是传递到 free（）的指针必须与 malloc（）， realloc（） 。在他们自己的代码中或者在图书馆中更深入地找出新手的问题并不容易。在我的情况下，这是一个与分支相关的未定义（未初始化）指针的简单情况。
free（）函数释放ptr指向的内存空间，
必须已由先前调用malloc（），calloc（）或
realloc（）返回。否则，或者如果free（ptr）已经被调用，则会出现
未定义的行为。如果ptr为NULL，则不执行任何操作。
GNU 2012-05-10 MALLOC（3）
char * words; //将此设置为NULL将阻止此问题
if（condition）{
words = malloc（512）;
/ *在某个时候以后可以免费使用* /
free（words）
} else {
/ *不分配这个分支中的单词* /
}
/ * free（words）; - error here -
*** glibc detected *** ./bin：munmap_chunk（）：invalid pointer：0xb________ *** /
关于相关的 free（）和 rellocate（）函数，有很多类似的问题。一些值得注意的答案提供了更多详细信息：
*** glibc detected *** free（）：invalid next size（normal）：0x0a03c978 ***
*** glibc detected *** sendip：free（）：invalid next size（normal）：0x09da25e8 ** *
检测到glibc，realloc（）：无效指针
IMHO在调试器（Valgrind）中运行所有内容不是最好的选择，通常是由无能或新手的程序员造成的。手动找出问题并了解如何避免它在将来更有效率。
I have an application in C++ and OpenCV which try to use the classification model realized with SVMLight in order to add the weight values which can be use for HOG Calssificator under OpenCV.
The problem is that when i run the application, i get this error:
./main Converting Model file...
1%3%4%5%7%8%9%11%12%13%15%16%18%19%20%22%23%24%26%27%28%30%31%32%34%35%36%38%39%40%42%43%45%46%47%49%50%51%53%54%55%57%58%59%61%62%63%65%66%67%69%70%72%73%74%76%77%78%80%81%82%84%85%86%88%89%90%92%93%94%96%97%99%100%Skipped
line
*** glibc detected *** ./main: munmap_chunk(): invalid pointer:
0x09926218 ***
======= Backtrace: ========= /lib/libc.so.6(+0x6c501)[0xb6a3d501]
/lib/libc.so.6(+0x6d77e)[0xb6a3e77e]
/usr/lib/tls/libnvidia-tls.so.260.19.26(+0xa20)[0xb4116a20]
./main(_ZN9__gnu_cxx13new_allocatorIfE10deallocateEPfj+0x11)[0x804f7ab]
./main(_ZNSt12_Vector_baseIfSaIfEE13_M_deallocateEPfj+0x25)[0x804f075]
./main(_ZNSt12_Vector_baseIfSaIfEED2Ev+0x37)[0x804e9f1]
./main(_ZNSt6vectorIfSaIfEED1Ev+0x38)[0x804e46a]
./main[0x804bf65]
/lib/libc.so.6(__libc_start_main+0xe7)[0xb69e7ce7]
./main[0x804bd11]
======= Memory map: ======== 08048000-08052000 r-xp 00000000 08:01
27272122
/home/roccog/HOGImplementation/HOGTrainer/main
08052000-08053000 r--p 00009000 08:01
27272122
/home/roccog/HOGImplementation/HOGTrainer/main
08053000-08054000 rw-p 0000a000 08:01
27272122
/home/roccog/HOGImplementation/HOGTrainer/main
098dd000-0994a000 rw-p 00000000 00:00
0 [heap] b2387000-b238d000
rw-p 00000000 00:00 0
b238d000-b23dc000 r-xp 00000000 08:01
16386856 /usr/lib/libXt.so.6.0.0
b23dc000-b23dd000 r--p 0004e000 08:01
16386856 /usr/lib/libXt.so.6.0.0
b23dd000-b23e0000 rw-p 0004f000 08:01
16386856 /usr/lib/libXt.so.6.0.0
b23e0000-b23e1000 rw-p 00000000 00:00
0 b23e1000-b2422000 r-xp 00000000
08:01 16392261
/usr/lib/libQtXml.so.4.7.0
b2422000-b2423000 r--p 00041000 08:01
16392261 /usr/lib/libQtXml.so.4.7.0
b2423000-b2424000 rw-p 00042000 08:01
16392261 /usr/lib/libQtXml.so.4.7.0
b2424000-b243e000 r-xp 00000000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b243e000-b2440000 r--p 0001a000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b2440000-b2441000 rw-p 0001c000 08:01
16387730 /usr/lib/libv4lconvert.so.0
b2441000-b2491000 rw-p 00000000 00:00
0 b2491000-b2496000 r-xp 00000000
08:01 16387500
/usr/lib/libogg.so.0.7.0
b2496000-b2497000 r--p 00004000 08:01
16387500 /usr/lib/libogg.so.0.7.0
b2497000-b2498000 rw-p 00005000 08:01
16387500 /usr/lib/libogg.so.0.7.0
b2498000-b24eb000 r-xp 00000000 08:01
16387509
/usr/lib/liborc-0.4.so.0.0.0
b24eb000-b24ec000 r--p 00052000 08:01
16387509
/usr/lib/liborc-0.4.so.0.0.0
b24ec000-b24ef000 rw-p 00053000 08:01
16387509
/usr/lib/liborc-0.4.so.0.0.0
b24ef000-b24f0000 rw-p 00000000 00:00
0 b24f0000-b24f4000 r-xp 00000000
08:01 16386828
/usr/lib/libXdmcp.so.6.0.0
b24f4000-b24f5000 r--p 00003000 08:01
16386828 /usr/lib/libXdmcp.so.6.0.0
b24f5000-b24f6000 rw-p 00004000 08:01
16386828 /usr/lib/libXdmcp.so.6.0.0
b24f6000-b24f8000 r-xp 00000000 08:01
16386817 /usr/lib/libXau.so.6.0.0
b24f8000-b24f9000 r--p 00001000 08:01
16386817 /usr/lib/libXau.so.6.0.0
b24f9000-b24fa000 rw-p 00002000 08:01
16386817 /usr/lib/libXau.so.6.0.0
b24fa000-b250f000 r-xp 00000000 08:01
16391993 /usr/lib/libaudio.so.2.4
b250f000-b2510000 r--p 00015000 08:01
16391993 /usr/lib/libaudio.so.2.4
b2510000-b2511000 rw-p 00016000 08:01
16391993 /usr/lib/libaudio.so.2.4
b2511000-b258a000 r-xp 00000000 08:01
16392274 /usr/lib/libQtDBus.so.4.7.0
b258a000-b258b000 r--p 00079000 08:01
16392274 /usr/lib/libQtDBus.so.4.7.0
b258b000-b258c000 rw-p 0007a000 08:01
16392274 /usr/lib/libQtDBus.so.4.7.0
b258c000-b2592000 r-xp 00000000 08:01
16387729 /usr/lib/libv4l2.so.0
b2592000-b2593000 r--p 00005000 08:01
16387729 /usr/lib/libv4l2.so.0
b2593000-b2597000 rw-p 00006000 08:01
16387729 /usr/lib/libv4l2.so.0
b2597000-b2598000 rw-p 00000000 00:00
0 b2598000-b25a3000 r-xp 00000000
08:01 4456631
/lib/libusb-1.0.so.0.0.0
b25a3000-b25a4000 r--p 0000a000 08:01
4456631 /lib/libusb-1.0.so.0.0.0
b25a4000-b25a5000 rw-p 0000b000 08:01
4456631 /lib/libusb-1.0.so.0.0.0
b25a5000-b2630000 r-xp 00000000 08:01
16392999 /usr/lib/libvpx.so.0.9.5
b2630000-b2631000 r--p 0008b000 08:01
16392999 /usr/lib/libvpx.so.0.9.5
b2631000-b2632000 rw-p 0008c000 08:01
16392999 /usr/lib/libvpx.so.0.9.5
b2632000-b263c000 rw-p 00000000 00:00
0 b263c000-b2662000 r-xp 00000000
08:01 16387736
/usr/lib/libvorbis.so.0.4.4
b2662000-b2663000 r--p 00025000 08:01
16387736 /usr/lib/libvorbis.so.0.4.4
b2663000-b2664000 rw-p 00026000 08:01
16387736 /usr/lib/libvorbis.so.0.4.4
b2664000-b27c9000 r-xp 00000000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27c9000-b27ca000 ---p 00165000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27ca000-b27db000 r--p 00165000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27db000-b27dc000 rw-p 00176000 08:01
16387738
/usr/lib/libvorbisenc.so.2.0.7
b27dc000-b27f4000 r-xp 00000000 08:01
16387697
/usr/lib/libtheoradec.so.1.1.4
b27f4000-b27f5000 r--p 00017000 08:01
16387697
/usr/lib/libtheoradec.so.1.1.4
b27f5000-b27f6000 rw-p 00018000 08:01
16387697
/usr/lib/libtheoradec.so.1.1.4
b27f6000-b27f7000 rw-p 00000000 00:00
0 b27f7000-b2839000 r-xp 00000000
08:01 16387699
/usr/lib/libtheoraenc.so.1.1.2
b2839000-b283a000 r--p 00041000 08:01
16387699
/usr/lib/libtheoraenc.so.1.1.2
b283a000-b283b000 rw-p 00042000 08:01
16387699
/usr/lib/libtheoraenc.so.1.1.2
b283b000-b2856000 r-xp 00000000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5.0
b2856000-b2857000 r--p 0001a000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5.0
b2857000-b2858000 rw-p 0001b000 08:01
16392180
/usr/lib/sse2/libspeex.so.1.5.0
b2858000-b28f5000 r-xp 00000000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3.0
b28f5000-b28f6000 ---p 0009d000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3.0
b28f6000-b28f7000 r--p 0009d000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3.0
b28f7000-b28f8000 rw-p 0009e000 08:01
16392994
/usr/lib/libschroedinger-1.0.so.0.3.0
b28f8000-b28f9000 rw-p 00000000 00:00
0 b28f9000-b2905000 r-xp 00000000
08:01 16392992
/usr/lib/libgsm.so.1.0.12
b2905000-b2906000 r--p 0000b000 08:01
16392992 /usr/lib/libgsm.so.1.0.12
b2906000-b2907000 rw-p 0000c000 08:01
16392992 /usr/lib/libgsm.so.1.0.12
b2907000-b290c000 r-xp 00000000 08:01
16392996 /usr/lib/libva.so.1.0.1
b290c000-b290d000 r--p 00004000 08:01
16392996 /usr/lib/libva.so.1.0.1
b290d000-b290e000 rw-p 00005000 08:01
16392996 /usr/lib/libva.so.1.0.1
b290e000-b290f000 rw-p 00000000 00:00
0 b290f000-b2933000 r-xp 00000000
08:01 4456520
/lib/libexpat.so.1.5.2
b2933000-b2935000 r--p 00024000 08:01
4456520 /lib/libexpat.so.1.5.2
b2935000-b2936000 rw-p 00026000 08:01
4456520 /lib/libexpat.so.1.5.2
b2936000-b293c000 r-xp 00000000 08:01
16387775
/usr/lib/libxcb-render.so.0.0.0
b293c000-b293d000 r--p 00005000 08:01
16387775
/usr/lib/libxcb-render.so.0.0.0
b293d000-b293e000 rw-p 00006000 08:01
16387775
/usr/lib/libxcb-render.so.0.0.0
b293e000-b2940000 r-xp 00000000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2940000-b2941000 r--p 00001000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2941000-b2942000 rw-p 00002000 08:01
16387777
/usr/lib/libxcb-shm.so.0.0.0
b2942000-b299e000 r-xp 00000000 08:01
16387543
/usr/lib/libpixman-1.so.0.18.4Aborted
It's strange because it succefully creates the file which i need, but it gives this error anyway.
This is the code which i use:
vector<float> test;
loadSVMfromModelFile("model", &test); // model is the file create with SVM_Light
//loads a file from SVMlight and converts the loaded support vectors to the weight vector.
void loadSVMfromModelFile(const char* filename, vector<float>* svm){
ifstream svinstr (filename);
string line;
float d,g,s,r, b;
int maxidx,numtrain,numsvm, type;
int cur_svidx = 0;
getline(svinstr, line);
line.clear();
svinstr >> type;
if (type != 0){
cout << "Error: Only linear SVM supported" << endl;
return;
}
getline(svinstr, line);
svinstr >> d; //Kernel parameter d...
line.clear();
getline(svinstr, line);
svinstr >>g;
line.clear();
getline(svinstr, line);
svinstr >> s;
line.clear();
getline(svinstr, line);
svinstr >> r;
line.clear();
getline(svinstr, line);
line.clear();
getline(svinstr, line);
svinstr >> maxidx; //highest feature idx
line.clear();
getline(svinstr, line);
svinstr >> numtrain; //num of training vecs
line.clear();
getline(svinstr, line);
svinstr >> numsvm; //num of support vecs
line.clear();
getline(svinstr, line);
svinstr >> b; //offset b;
line.clear();
getline(svinstr, line);
line.clear();
svm->clear();
svm->resize(maxidx+1, 0);
(*svm)[maxidx] = -b;
while(!svinstr.eof())
{
cur_svidx++;
if (cur_svidx%20 ==0)
{
cout << cvRound((double)cur_svidx/(double)numsvm*100) << "%";
flush(cout);
}
getline(svinstr, line);
if (line.size() < 5){
cout << "Skipped line" << endl;
continue;
}
istringstream strstream(line);
float ftemp;
int itemp;
double alpha;
strstream >> alpha;
int lastitemp = -1;
while (!strstream.eof()) {
strstream >> itemp;
if (itemp == lastitemp){
break;
}
lastitemp = itemp;
char x;
strstream >> x;
strstream >>ftemp;
(*svm)[itemp-1] += alpha * ftemp;
}
svinstr.sync();
}
}
Can you help me to improve this utility and remove this weird error, please?
EDIT: This is what valgrind outputs me:
valgrind --leak-check=yes ./main
==27668== Memcheck, a memory error detector
==27668== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==27668== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for copyright info
==27668== Command: ./main
==27668==
Converting Model file...
==27668== Invalid read of size 4
==27668== at 0x804C6A6: loadSVMfromModelFile(char const*, std::vector<float, std::allocator<float> >*) (main.cpp:182)
==27668== by 0x804BF44: main (main.cpp:67)
==27668== Address 0x9f38844 is 4 bytes before a block of size 15,124 alloc'd
==27668== at 0x4026351: operator new(unsigned int) (vg_replace_malloc.c:255)
==27668== by 0x804F8C5: __gnu_cxx::new_allocator<float>::allocate(unsigned int, void const*) (new_allocator.h:89)
==27668== by 0x804F627: std::_Vector_base<float, std::allocator<float> >::_M_allocate(unsigned int) (in /home/roccog/HOGImplementation/HOGTrainer/main)
==27668== by 0x804F2ED: std::vector<float, std::allocator<float> >::_M_fill_insert(__gnu_cxx::__normal_iterator<float*, std::vector<float, std::allocator<float> > >, unsigned int, float const&) (vector.tcc:414)
==27668== by 0x804EABD: std::vector<float, std::allocator<float> >::insert(__gnu_cxx::__normal_iterator<float*, std::vector<float, std::allocator<float> > >, unsigned int, float const&) (stl_vector.h:859)
==27668== by 0x804E54F: std::vector<float, std::allocator<float> >::resize(unsigned int, float) (stl_vector.h:558)
==27668== by 0x804C4D5: loadSVMfromModelFile(char const*, std::vector<float, std::allocator<float> >*) (main.cpp:152)
==27668== by 0x804BF44: main (main.cpp:67)
==27668==
==27668== Invalid write of size 4
==27668== at 0x804C6C4: loadSVMfromModelFile(char const*, std::vector<float, std::allocator<float> >*) (main.cpp:182)
==27668== by 0x804BF44: main (main.cpp:67)
==27668== Address 0x9f38844 is 4 bytes before a block of size 15,124 alloc'd
==27668== at 0x4026351: operator new(unsigned int) (vg_replace_malloc.c:255)
==27668== by 0x804F8C5: __gnu_cxx::new_allocator<float>::allocate(unsigned int, void const*) (new_allocator.h:89)
==27668== by 0x804F627: std::_Vector_base<float, std::allocator<float> >::_M_allocate(unsigned int) (in /home/roccog/HOGImplementation/HOGTrainer/main)
==27668== by 0x804F2ED: std::vector<float, std::allocator<float> >::_M_fill_insert(__gnu_cxx::__normal_iterator<float*, std::vector<float, std::allocator<float> > >, unsigned int, float const&) (vector.tcc:414)
==27668== by 0x804EABD: std::vector<float, std::allocator<float> >::insert(__gnu_cxx::__normal_iterator<float*, std::vector<float, std::allocator<float> > >, unsigned int, float const&) (stl_vector.h:859)
==27668== by 0x804E54F: std::vector<float, std::allocator<float> >::resize(unsigned int, float) (stl_vector.h:558)
==27668== by 0x804C4D5: loadSVMfromModelFile(char const*, std::vector<float, std::allocator<float> >*) (main.cpp:152)
==27668== by 0x804BF44: main (main.cpp:67)
==27668==
1%3%4%5%7%8%9%11%12%13%15%16%18%19%20%22%23%24%26%27%28%30%31%32%34%35%36%38%39%40%42%43%45%46%47%49%50%51%53%54%55%57%58%59%61%62%63%65%66%67%69%70%72%73%74%76%77%78%80%81%82%84%85%86%88%89%90%92%93%94%96%97%99%100%Skipped line
EDIT 2: As valgrind outputs:
#==27668== Invalid read of size 4 ==27668== at 0x804C6A6: loadSVMfromModelFile(char const*, std::vector >*) (main.cpp:182) ==27668== by 0x804BF44: main (main.cpp:67)
#
line 182: (*svm)[itemp-1] += alpha * ftemp;
Then:
#==27668== by 0x804BF44: main (main.cpp:67) ==27668== Address 0x9f38844 is 4 bytes before a block of size 15,124 alloc'd ==27668== at 0x4026351: operator new(unsigned int) (vg_replace_malloc.c:255) ==27668== by 0x804F8C5: __gnu_cxx::new_allocator::allocate(unsigned int, void const*) (new_allocator.h:89)
#line 67: vector test; loadSVMfromModelFile("model", &test);
解决方案
This happens when the pointer passed to free() is not valid or has been modified somehow. I don't really know the details here. The bottom line is that the pointer passed to free() must be the same as returned by malloc(), realloc() and their friends. It's not always easy to spot what the problem is for a novice in their own code or even deeper in a library. In my case, it was a simple case of an undefined (uninitialized) pointer related to branching.
The free() function frees the memory space pointed to by ptr, which must have been returned by a previous call to malloc(), calloc() or realloc(). Otherwise, or if free(ptr) has already been called before, undefined behavior occurs. If ptr is NULL, no operation is performed. GNU 2012-05-10 MALLOC(3)
char *words; // setting this to NULL would have prevented the issue
if (condition) {
words = malloc( 512 );
/* calling free sometime later works here */
free(words)
} else {
/* do not allocate words in this branch */
}
/* free(words); -- error here --
*** glibc detected *** ./bin: munmap_chunk(): invalid pointer: 0xb________ ***/
There are many similar questions here about the related free() and rellocate() functions. Some notable answers providing more details:
*** glibc detected *** free(): invalid next size (normal): 0x0a03c978 ***
*** glibc detected *** sendip: free(): invalid next size (normal): 0x09da25e8 ***
glibc detected, realloc(): invalid pointer
IMHO running everything in a debugger (Valgrind) is not the best option because errors like this are often caused by inept or novice programmers. It's more productive to figure out the issue manually and learn how to avoid it in the future.
这篇关于如何解决munmap_chunk（）：C ++中无效的指针错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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