hi, While valgrinding a program of mine, I get this warning: ==4350== Thread 2: ==4350== Invalid read of size 8 ==4350== at 0x5F5D092: ns3::StackTrampoline::SignalHandler(int) (pthread-fiber-manager.cc:168) ==4350== by 0x37FB40F0EF: ??? (in /lib64/libpthread-2.11.2.so) ==4350== by 0x37FB40EFBA: raise (pt-raise.c:42) ==4350== Address 0x67494f0 is on thread 2's stack
which corresponds to the following assembly code: 0x0000000005f5d092 <ns3::StackTrampoline::SignalHandler(int)+50>: mov -0x8(%rbp),%rax 0x0000000005f5d096 <ns3::StackTrampoline::SignalHandler(int)+54>: mov 0xd0(%rax),%rax with the program counter being (gdb) p $pc $2 = (void (*)(void)) 0x5f5d092 <ns3::StackTrampoline::SignalHandler(int)+50> and the frame pointer: (gdb) p $rbp $3 = (void *) 0x67494f8 So, yes, this code is accessing a variable located on the stack. But, what is wrong with that ? The stack page is allocated with mmap, it is set with sigaltstack and registered with VALGRIND_STACK_REGISTER What could I have done wrong to trigger this warning ? Mathieu -- Mathieu Lacage <mathieu.lac...@gmail.com> ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today. http://p.sf.net/sfu/beautyoftheweb _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
