Messages in this thread | | | Date | Sat, 26 Dec 2020 05:09:51 +0800 | From | kernel test robot <> | Subject | Re: [PATCH] nvmet-fc: associations list replaced with hlist rcu, |
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Hi,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on linus/master] [also build test WARNING on v5.10 next-20201223] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/leonid-ravich-dell-com/nvmet-fc-associations-list-replaced-with-hlist-rcu/20201224-191206 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 58cf05f597b03a8212d9ecf2c79ee046d3ee8ad9 config: s390-randconfig-r031-20201224 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/0day-ci/linux/commit/db9dbc6efce5ef6533984b7fbe395b365d71ce7f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review leonid-ravich-dell-com/nvmet-fc-associations-list-replaced-with-hlist-rcu/20201224-191206 git checkout db9dbc6efce5ef6533984b7fbe395b365d71ce7f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
include/uapi/linux/swab.h:19:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x000000ffUL) << 24) | \ ^ In file included from drivers/nvme/target/fc.c:8: In file included from include/linux/blk-mq.h:5: In file included from include/linux/blkdev.h:26: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:80: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:20:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x0000ff00UL) << 8) | \ ^ In file included from drivers/nvme/target/fc.c:8: In file included from include/linux/blk-mq.h:5: In file included from include/linux/blkdev.h:26: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:80: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:21:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0x00ff0000UL) >> 8) | \ ^ In file included from drivers/nvme/target/fc.c:8: In file included from include/linux/blk-mq.h:5: In file included from include/linux/blkdev.h:26: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:80: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:119:21: note: expanded from macro '__swab32' ___constant_swab32(x) : \ ^ include/uapi/linux/swab.h:22:12: note: expanded from macro '___constant_swab32' (((__u32)(x) & (__u32)0xff000000UL) >> 24))) ^ In file included from drivers/nvme/target/fc.c:8: In file included from include/linux/blk-mq.h:5: In file included from include/linux/blkdev.h:26: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:80: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:120:12: note: expanded from macro '__swab32' __fswab32(x)) ^ In file included from drivers/nvme/target/fc.c:8: In file included from include/linux/blk-mq.h:5: In file included from include/linux/blkdev.h:26: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:80: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> drivers/nvme/target/fc.c:1156:6: warning: no previous prototype for function 'nvmet_assoc_free_queue_rcu' [-Wmissing-prototypes] void nvmet_assoc_free_queue_rcu(struct rcu_head *rcu_head) { ^ drivers/nvme/target/fc.c:1156:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void nvmet_assoc_free_queue_rcu(struct rcu_head *rcu_head) { ^ static drivers/nvme/target/fc.c:175:1: warning: unused function 'nvmet_fc_iodnum' [-Wunused-function] nvmet_fc_iodnum(struct nvmet_fc_ls_iod *iodptr) ^ drivers/nvme/target/fc.c:181:1: warning: unused function 'nvmet_fc_fodnum' [-Wunused-function] nvmet_fc_fodnum(struct nvmet_fc_fcp_iod *fodptr) ^ 23 warnings generated.
vim +/nvmet_assoc_free_queue_rcu +1156 drivers/nvme/target/fc.c
1155 > 1156 void nvmet_assoc_free_queue_rcu(struct rcu_head *rcu_head) { 1157 struct nvmet_fc_tgt_assoc *assoc = 1158 container_of(rcu_head, struct nvmet_fc_tgt_assoc, rcu_head); 1159 struct nvmet_fc_tgtport *tgtport = assoc->tgtport; 1160 1161 kfree(assoc); 1162 dev_info(tgtport->dev, 1163 "{%d:%d} Association freed\n", 1164 tgtport->fc_target_port.port_num, assoc->a_id); 1165 } 1166
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