Hi, Do u know where in the kernel it crashes and can add dump_stack() there and try ? I used dump_stack() in the past many times and it worked for me. IIRC, kernel hacking->Kernel debugging was selected in my kernekl config, and I did not had to to anything else Regards, Rami Rosen http://ramirose.wix.com/ramirosen On 9 September 2016 at 21:21, Daniel. <danielhilst@xxxxxxxxx> wrote: > Hi everybody, > > I'm debugging a library that implement some nasty protocol. This > library is used by some JNI library which exports the native library > to Java world. By the way I'm running on ARMv7. > > Well, some times, at random times, that library crashes. The problem > is that I can't get stacktrace. Not from JVM's fatal errors logs, not > from core dumps, not from libSegFault... I'm using "-g -rdynamic > -funwind-tables -mapcs-frame" compiler options but still I can't get a > stacktrace. I've tried using glibc backtrace too. What I don't tried > yet: libunwind, valgrid and making kernel do the stacktrace. The cool > part is that when I ran my library outside from the JVM (with native > application) I do get backtraces! [Damn Java] > > I'm here to ask: Is it possible to make kernel print the stacktrace > for some userspace application when it crashes? > > I saw USER_STACKTRACE_SUPPORT but can't find any help from it's > Kconfig. I saw this https://kernelnewbies.org/FAQ/StackTrace and this > http://processors.wiki.ti.com/index.php/Enabling_Stack_Dumping_in_Linux_Kernel > but can't find "Kernel hacking -> Verbose kernel error messages" even > with "Kernel hacking -> Kernel Debuggin" enabled. > > Any help is appreciated! Thanks !!! > > -- > "Do or do not. There is no try" > Yoda Master > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
