> I have not seen any activity on that in a long time. IIRC, Julien quit RedHat. > I don't know if anyone else has taken over this work in RedHat. > > Sorry, I don't have any more information. > > Madhavan Thanks for your information. By the way, I'm considering test code for arch_stack_walk_reliable(). Specifically, I apply Suraj's patch to enable livepatch, and added a function that sleeps between SYM_CODE_START and SYM_CODE_END, then livepatch checks if the task has an unreliable stack. For now my internal test code working correctly, but my Kconfig excludes STACK_VALIDATION dependency. It seems that objtool will not be enabled yet, so I would like to test it easier. If you are already testing with this patch, could you tell me how to do it? Thanks, Keiya > > On 1/24/22 23:21, nobuta.keiya@xxxxxxxxxxx wrote: > > Hi Madhavan, > > > >> Select HAVE_RELIABLE_STACKTRACE in arm64/Kconfig to allow > >> arch_stack_walk_reliable() to be used. > >> > >> Note that this is conditional upon STACK_VALIDATION which will be > >> added when frame pointer validation is implemented (say via objtool). > > > > I know that Julien Thierry published objtool support for arm64 [1], > > but I'm not sure if it has been updated. Could you tell me other threads if you know? > > > > [1] > > https://lore.kernel.org/linux-arm-kernel/20210303170932.1838634-1-jthi > > erry@xxxxxxxxxx/ > > > > > > Thanks, > > Keiya > > > >> > >> Signed-off-by: Madhavan T. Venkataraman > >> <madvenka@xxxxxxxxxxxxxxxxxxx> > >> --- > >> arch/arm64/Kconfig | 1 + > >> 1 file changed, 1 insertion(+) > >> > >> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index > >> f6e333b59314..bc7b3514b563 100644 > >> --- a/arch/arm64/Kconfig > >> +++ b/arch/arm64/Kconfig > >> @@ -223,6 +223,7 @@ config ARM64 > >> select THREAD_INFO_IN_TASK > >> select HAVE_ARCH_USERFAULTFD_MINOR if USERFAULTFD > >> select TRACE_IRQFLAGS_SUPPORT > >> + select HAVE_RELIABLE_STACKTRACE if FRAME_POINTER && > >> +STACK_VALIDATION > >> help > >> ARM 64-bit (AArch64) Linux support. > >> > >> -- > >> 2.25.1 > > > > > > _______________________________________________ > > linux-arm-kernel mailing list > > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
