If you can't see any message on the console, enable early printk. Emeric
Le 17 oct. 2013 à 04:39, 杨杨毅 <vincentyang198...@gmail.com> a écrit : > Hi, Arnaud, > > I'm also trying to debug kernel. But I could not find a easier way to bebug > it until now. Could you share specific method after you know ? Thanks > > On Monday, March 18, 2013 10:33:56 PM UTC+8, arnaud gaboury wrote: > Hi all, > > I would like to debug a non booting android kernel for lge mako n4. > Unfortunately, as the device does not boot, I can't pull any msg or log. > > I found this article : > http://bootloader.wikidot.com/android:kgdb > and followed it. > > Unfortunately, code is quite old and gave me a lot of errors at build time > after I applied the changes. Some small rework let me with one only issue: > > ERROR: modpost: Found 2 section mismatch(es). > To see full details build your kernel with: > 'make CONFIG_DEBUG_SECTION_MISMATCH=y' > GEN .version > CHK include/generated/compile.h > UPD include/generated/compile.h > CC init/version.o > LD init/built-in.o > LD .tmp_vmlinux1 > drivers/built-in.o: In function `__gs_poll_put_char': > kernel/lge/mako/drivers/usb/gadget/u_serial.c:1506: undefined reference to > `usb_loop_poll_hw' > drivers/built-in.o: In function `__gs_poll_get_char': > /kernel/lge/mako/drivers/usb/gadget/u_serial.c:1461: undefined reference to > `usb_loop_poll_hw' > make: *** [.tmp_vmlinux1] Error 1 > > I am not a C dev and do not know how to deal with it. Please find attached my > /gadget/u_serial.c file. I made some changes to other files too : > > https://bitbucket.org/rhg135/gingerkernel/commits/476cd6c80286#chg-drivers/usb/gadget/msm72k_udc.c > https://bitbucket.org/rhg135/gingerkernel/commits/12c6d96a6a2b#chg-arch/arm/mach-msm/include/mach/msm_hsusb.h > https://bitbucket.org/rhg135/gingerkernel/commits/b73e26b254e9#chg-drivers/usb/gadget/u_serial.c > > Thank you for any help. Maybe there is a easier way to debug Kernel, but I > couldn't find any clear entry. > > Regards. > > > > > -- > -- > unsubscribe: android-kernel+unsubscr...@googlegroups.com > website: http://groups.google.com/group/android-kernel > --- > You received this message because you are subscribed to the Google Groups > "Android Linux Kernel Development" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to android-kernel+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. -- -- unsubscribe: android-kernel+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-kernel --- You received this message because you are subscribed to the Google Groups "Android Linux Kernel Development" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-kernel+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
