[kbuild-all] Re: [linux-next:master 4238/6654] include/linux/dmaengine.h:1576: undefined reference to `dma_request_chan'

Hi, On 10/09/2020 13.46, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 7ce53e3a447bced7b85ed181c4d027e93c062e07 > commit: 7547dbd3b198f309aaff54e3528898a8a196faff [4238/6654] dmaengine: Mark dma_request_slave_channel() deprecated > config: arm64-randconfig-r025-20200909 (attached as .config) > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9) > reproduce (this is a W=1 build): > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # install arm64 cross compiling tool for clang build > # apt-get install binutils-aarch64-linux-gnu > git checkout 7547dbd3b198f309aaff54e3528898a8a196faff > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 I'm not sure what is wrong, but can not reproduce it with GCC.

> > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp(a)intel.com&gt; > > All errors (new ones prefixed by >>): > > aarch64-linux-gnu-ld: warning: -z norelro ignored > aarch64-linux-gnu-ld: fs/orangefs/orangefs-debugfs.o: in function `orangefs_debug_read': > fs/orangefs/orangefs-debugfs.c:375: undefined reference to `stpcpy' Is this also caused by the blaimed patch? > aarch64-linux-gnu-ld: security/apparmor/lsm.o: in function `param_get_mode': > security/apparmor/lsm.c:1559: undefined reference to `stpcpy' > aarch64-linux-gnu-ld: security/apparmor/lsm.o: in function `param_get_audit': > security/apparmor/lsm.c:1530: undefined reference to `stpcpy' > aarch64-linux-gnu-ld: drivers/tty/tty_io.o: in function `tty_line_name': > drivers/tty/tty_io.c:1139: undefined reference to `stpcpy' > aarch64-linux-gnu-ld: drivers/tty/tty_io.c:1139: undefined reference to `stpcpy' > aarch64-linux-gnu-ld: drivers/tty/tty_io.o:drivers/tty/tty_io.c:1139: more undefined references to `stpcpy' follow > aarch64-linux-gnu-ld: drivers/tty/serial/fsl_lpuart.o: in function `lpuart_remove': > drivers/tty/serial/fsl_lpuart.c:2663: undefined reference to `dma_release_channel' > aarch64-linux-gnu-ld: drivers/tty/serial/fsl_lpuart.c:2666: undefined reference to `dma_release_channel' #ifdef CONFIG_DMA_ENGINE struct dma_chan *dma_request_chan(struct device *dev, const char *name); #else static inline struct dma_chan *dma_request_chan(struct device *dev, const char *name) { return ERR_PTR(-ENODEV); } #endif static inline struct dma_chan * __deprecated dma_request_slave_channel(struct device *dev, const char *name) { struct dma_chan *ch = dma_request_chan(dev, name); return IS_ERR(ch) ? NULL : ch; } And in the included config we have: # CONFIG_DMADEVICES is not set CONFIG_DMA_ENGINE=y