Hello, We've been seing the following linker error on arm64 syzbot instances: ld.lld: error: undefined symbol: phy_mipi_dphy_get_default_config_for_hsclk >>> referenced by samsung-dsim.c:731 (drivers/gpu/drm/bridge/samsung-dsim.c:731) >>> drivers/gpu/drm/bridge/samsung-dsim.o:(samsung_dsim_init) in archive vmlinux.a Steps to reproduce on the latest linux-next: $ git checkout next-20230803 $ wget -O '.config' 'https://raw.githubusercontent.com/google/syzkaller/master/dashboard/config/linux/upstream-arm64-kasan.config' $ make CC=clang ARCH=arm64 LD=ld.lld CROSS_COMPILE=aarch64-linux-gnu- olddefconfig This also prints: WARNING: unmet direct dependencies detected for GENERIC_PHY_MIPI_DPHY Depends on [n]: GENERIC_PHY [=n] Selected by [y]: - DRM_NWL_MIPI_DSI [=y] && DRM_BRIDGE [=y] && DRM [=y] && COMMON_CLK [=y] && OF [=y] && HAS_IOMEM [=y] - DRM_SAMSUNG_DSIM [=y] && DRM [=y] && DRM_BRIDGE [=y] && COMMON_CLK [=y] && OF [=y] && HAS_IOMEM [=y] $ make CC=clang ARCH=arm64 LD=ld.lld CROSS_COMPILE=aarch64-linux-gnu- -j$(nproc) The kernel should have still compiled fine even despite the message above, right? Could you please take a look? -- Thank you! Aleksandr
