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The defconfig kernel should be able to run Docker. Enable the missing settings according to [1]. make savedefconfig eliminates CONFIG_STACKTRACE which is enabled by default. Many of the settings are also needed to run a defconfig kernel on default distro installations or to run snaps. [1] https://github.com/moby/moby/blob/master/contrib/check-config.sh Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com> Reviewed-by: Anup Patel <anup@brainfault.org> Acked-by: Guo Ren <guoren@kernel.org> Link: https://lore.kernel.org/r/20220608000251.55271-1-heinrich.schuchardt@canonical.com [Palmer: Drop BLK_CGROUP, as it's causing panics with KASAN] Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>