Disabling CONFIG_RANDOMIZE_MEMORY did not help. Disabled CONFIG_RANDOMIZE_BASE as well and the symbols came up. The weird thing is that CONFIG_RANDOMIZE_BASE is enabled on Xenial (4.4) kernel as well, but somehow having it enabled on Zesty (4.10) kernel throws off kgdb. Thanks, Kamran. On Fri, Jun 16, 2017 at 3:02 PM, Kamran Khan <krkhan@xxxxxxxxxxxxxx> wrote: > The debug symbols are on for all of them, and gdb *does* load the > symbols. I have a suspicion that KASLR that was introduced around 4.7 > might be the culprit here. CONFIG_RANDOMIZE_MEMORY is an option that's > not present in the Xenial config. > > Anyone here has attached kgdb to 4.8/4.10? > > Thanks, > Kamran. > > On Fri, Jun 16, 2017 at 1:41 PM, <valdis.kletnieks@xxxxxx> wrote: >> On Fri, 16 Jun 2017 13:24:58 -0700, Kamran Khan said: >>> This is happening only with kernel 4.8+. >>> >>> When I compile kernel 4.4 with a stock Ubuntu Xenial .config, symbols >>> appear just fine. >>> >>> When I compile kernel 4.8/4.10 with Yakkety/Zesty stock configs the >>> symbols disappear. >> >> What happens when you try to compile 4.8/r.10 with a Xenial .config? >> >> I'm willing to bet the problem is that the Xenial config turns on symbols >> and Yakkety/Zesty disable them by default. >> >> See these for further info: >> >> CONFIG_DEBUG_INFO=y >> CONFIG_DEBUG_INFO_REDUCED=y >> CONFIG_DEBUG_INFO_SPLIT=y >> >> It appears that you'll need DEBUG_INFO_REDUCED=n for kgdb to work properly. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
