Wind River Support Network


LIN1021-71 : WARNING: kernel stack regs at (____ptrval____) in swapper/0:1 has bad 'bp' value (____ptrval____)

Created: May 17, 2021    Updated: May 25, 2021
Found In Version:
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: BSP


The warning is introduced by using CONFIG_KPROBES_SANITY_TEST=y and CONFIG_UNWINDER_FRAME_POINTER=y at the same time.
But log shows "Kprobe smoke test: passed successfully" and there is no warning when using ORC as kernel stack unwinder.

Steps to Reproduce

/lpg-build/cdc/fast_prod/WRLINUX_MASTER_WR/MASTER_WR_GIT/wrlinux-10/ --machines=intel-x86-64 --templates feature/intel-qat feature/xfce feature/dpdk feature/bsp-extras feature/docker feature/kexec feature/kdump feature/lxc feature/tpm2 --layers meta-dpdk --distro wrlinux --accept-eula=yes --dl-layers

source ./environment-setup-x86_64-wrlinuxsdk-linux
source ./oe-init-build-env build
bitbake-layers add-layer /folk/kliang/lxgit/wrlinux/wr-testing/bts-dev/
echo require templates/feature/bts/template.conf >> conf/local.conf
echo IMAGE_FSTYPES += \" tar.bz2\" >> conf/local.conf
echo BB_NO_NETWORK_pn-lmbench = \"0\" >> conf/local.conf
echo PNWHITELIST_dpdk += \'dpdk\' >> conf/local.conf
echo BB_NO_NETWORK = \'0\' >> conf/local.conf
echo IMAGE_FSTYPES_remove = \" live hddimg iso\" >>conf/local.conf
bitbake wrlinux-image-std
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