tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.fd head: e0288728ff8a4703675c4c8e2ea8a0122b7675f6 commit: 3cc074209e634318e4f9fd4a813dae7703d2aa78 [11/19] switch simple users of fdget() to CLASS(fd, ...) config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20240607/202406071836.yx9rpD7U-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project d7d2d4f53fc79b4b58e8d8d08151b577c3699d4a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240607/202406071836.yx9rpD7U-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202406071836.yx9rpD7U-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from fs/select.c:22: In file included from include/linux/syscalls.h:93: In file included from include/trace/syscall.h:5: In file included from include/linux/tracepoint.h:22: In file included from include/linux/static_call.h:135: In file included from include/linux/cpu.h:17: In file included from include/linux/node.h:18: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:19: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:173: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:2253: include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from fs/select.c:33: In file included from include/net/busy_poll.h:15: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:28: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from fs/select.c:33: In file included from include/net/busy_poll.h:15: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:28: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from fs/select.c:33: In file included from include/net/busy_poll.h:15: In file included from include/linux/netdevice.h:38: In file included from include/net/net_namespace.h:43: In file included from include/linux/skbuff.h:28: In file included from include/linux/dma-mapping.h:11: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> fs/select.c:860:3: error: cannot jump from this goto statement to its label 860 | goto out; | ^ fs/select.c:862:12: note: jump bypasses initialization of variable with __attribute__((cleanup)) 862 | CLASS(fd, f)(fd); | ^ 13 warnings and 1 error generated. vim +860 fs/select.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 844 4a4b69f79ba728 Vadim Lobanov 2006-06-23 845 /* 4a4b69f79ba728 Vadim Lobanov 2006-06-23 846 * Fish for pollable events on the pollfd->fd file descriptor. We're only 4a4b69f79ba728 Vadim Lobanov 2006-06-23 847 * interested in events matching the pollfd->events mask, and the result 4a4b69f79ba728 Vadim Lobanov 2006-06-23 848 * matching that mask is both recorded in pollfd->revents and returned. The 4a4b69f79ba728 Vadim Lobanov 2006-06-23 849 * pwait poll_table will be used by the fd-provided poll handler for waiting, 626cf236608505 Hans Verkuil 2012-03-23 850 * if pwait->_qproc is non-NULL. 4a4b69f79ba728 Vadim Lobanov 2006-06-23 851 */ fb3679372bd796 Al Viro 2017-07-16 852 static inline __poll_t do_pollfd(struct pollfd *pollfd, poll_table *pwait, cbf55001b2ddb8 Eliezer Tamir 2013-07-08 853 bool *can_busy_poll, fb3679372bd796 Al Viro 2017-07-16 854 __poll_t busy_flag) ^1da177e4c3f41 Linus Torvalds 2005-04-16 855 { a0f8dcfc607d8d Christoph Hellwig 2018-03-05 856 int fd = pollfd->fd; a0f8dcfc607d8d Christoph Hellwig 2018-03-05 857 __poll_t mask = 0, filter; ^1da177e4c3f41 Linus Torvalds 2005-04-16 858 a0f8dcfc607d8d Christoph Hellwig 2018-03-05 859 if (fd < 0) a0f8dcfc607d8d Christoph Hellwig 2018-03-05 @860 goto out; a9a08845e9acbd Linus Torvalds 2018-02-11 861 mask = EPOLLNVAL; 3cc074209e6343 Al Viro 2024-05-31 862 CLASS(fd, f)(fd); 3cc074209e6343 Al Viro 2024-05-31 863 if (fd_empty(f)) a0f8dcfc607d8d Christoph Hellwig 2018-03-05 864 goto out; a0f8dcfc607d8d Christoph Hellwig 2018-03-05 865 fb3679372bd796 Al Viro 2017-07-16 866 /* userland u16 ->events contains POLL... bitmap */ a0f8dcfc607d8d Christoph Hellwig 2018-03-05 867 filter = demangle_poll(pollfd->events) | EPOLLERR | EPOLLHUP; a0f8dcfc607d8d Christoph Hellwig 2018-03-05 868 pwait->_key = filter | busy_flag; 516384815d6105 Al Viro 2024-05-31 869 mask = vfs_poll(fd_file(f), pwait); cbf55001b2ddb8 Eliezer Tamir 2013-07-08 870 if (mask & busy_flag) cbf55001b2ddb8 Eliezer Tamir 2013-07-08 871 *can_busy_poll = true; a0f8dcfc607d8d Christoph Hellwig 2018-03-05 872 mask &= filter; /* Mask out unneeded events. */ a0f8dcfc607d8d Christoph Hellwig 2018-03-05 873 a0f8dcfc607d8d Christoph Hellwig 2018-03-05 874 out: fb3679372bd796 Al Viro 2017-07-16 875 /* ... and so does ->revents */ c71d227fc4133f Al Viro 2017-11-29 876 pollfd->revents = mangle_poll(mask); 4a4b69f79ba728 Vadim Lobanov 2006-06-23 877 return mask; ^1da177e4c3f41 Linus Torvalds 2005-04-16 878 } ^1da177e4c3f41 Linus Torvalds 2005-04-16 879 :::::: The code at line 860 was first introduced by commit :::::: a0f8dcfc607d8d113090ff36eee2ee406463bb0e fs: cleanup do_pollfd :::::: TO: Christoph Hellwig <hch@xxxxxx> :::::: CC: Christoph Hellwig <hch@xxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
