On 12/24/2015 05:02 PM, santosh dasimanth wrote: > Hi All, > I am working on Sqlite in multi threaded environment on ARM v7 platform. > > I am facing problems with malloc() function returning segmentation fault. > The problem is not frequent but out of 100 times am getting this once. > > The backtrace is pasted below. > > (gdb) bt > #0 0x4038eb18 in malloc () from /lib/libc.so.0 > #1 0x401e0758 in sqlite3MallocRaw () from /pfrm2.0/lib/libsqlite3.so.0 > #2 0x401e08a8 in sqlite3Malloc () from /pfrm2.0/lib/libsqlite3.so.0 > #3 0x401e6254 in sqlite3VdbeCreate () from /pfrm2.0/lib/libsqlite3.so.0 > #4 0x401d99cc in sqlite3GetVdbe () from /pfrm2.0/lib/libsqlite3.so.0 > #5 0x401bd780 in sqlite3FinishCoding () from /pfrm2.0/lib/libsqlite3.so.0 > #6 0x401d2464 in sqlite3Parser () from /pfrm2.0/lib/libsqlite3.so.0 > #7 0x401dd664 in sqlite3RunParser () from /pfrm2.0/lib/libsqlite3.so.0 > #8 0x401d650c in sqlite3Prepare () from /pfrm2.0/lib/libsqlite3.so.0 > #9 0x401d69a4 in sqlite3_prepare () from /pfrm2.0/lib/libsqlite3.so.0 > #10 0x401ed5c0 in sqlite3_exec () from /pfrm2.0/lib/libsqlite3.so.0 > #11 0x401d5dbc in sqlite3InitCallback () from /pfrm2.0/lib/libsqlite3.so.0 > #12 0x401ed6f8 in sqlite3_exec () from /pfrm2.0/lib/libsqlite3.so.0 > #13 0x401d6184 in ?? () from /pfrm2.0/lib/libsqlite3.so.0 > > The traces are pointing to different functions when I hit the issue at > times. > Please let me know if anyone of people faced this problem before with > sqlite.
You have a corrupted heap in your application. Usually this is caused by calling free() or similar on a pointer that you should not have, but can also be due to large buffer overwrites and so on. If possible, run your application under valgrind - either on the ARM platform or on a workstation. It will very likely tell you what is going wrong. http://valgrind.org/ Dan.
