Messages in this thread | | | Date | Wed, 21 Feb 2024 11:32:33 +0800 | From | kernel test robot <> | Subject | [gustavoars:testing/WFAMNAE-next20240215 1/1] kernel/bpf/core.c:2440:22: warning: comparison of distinct pointer types ('struct bpf_prog_array *' and 'struct bpf_prog_array_hdr *') |
| |
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/WFAMNAE-next20240215 head: b50c399b249bcb0fdc709e812b4e87519937299d commit: 3fedbc527c5726b876207557fb133a5e558c1898 [1/1] treewide: Address -Wflexible-array-member-not-at-end warnings config: um-allmodconfig (https://download.01.org/0day-ci/archive/20240221/202402211137.ShMIWxpm-lkp@intel.com/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 36adfec155de366d722f2bac8ff9162289dcf06c) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240221/202402211137.ShMIWxpm-lkp@intel.com/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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202402211137.ShMIWxpm-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from kernel/bpf/core.c:21: In file included from include/linux/filter.h:9: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 547 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from kernel/bpf/core.c:21: In file included from include/linux/filter.h:9: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from kernel/bpf/core.c:21: In file included from include/linux/filter.h:9: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 584 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 692 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 700 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 708 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 717 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 726 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 735 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ >> kernel/bpf/core.c:2440:22: warning: comparison of distinct pointer types ('struct bpf_prog_array *' and 'struct bpf_prog_array_hdr *') [-Wcompare-distinct-pointer-types] 2440 | if (!progs || progs == &bpf_empty_prog_array.hdr) | ~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/bpf/core.c:2461:22: warning: comparison of distinct pointer types ('struct bpf_prog_array *' and 'struct bpf_prog_array_hdr *') [-Wcompare-distinct-pointer-types] 2461 | if (!progs || progs == &bpf_empty_prog_array.hdr) | ~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~ 14 warnings generated.
vim +2440 kernel/bpf/core.c
324bda9e6c5add Alexei Starovoitov 2017-10-02 2437 54e9c9d4b506b6 Stanislav Fomichev 2019-05-28 2438 void bpf_prog_array_free(struct bpf_prog_array *progs) 324bda9e6c5add Alexei Starovoitov 2017-10-02 2439 { 46531a30364bd4 Pavel Begunkov 2022-01-27 @2440 if (!progs || progs == &bpf_empty_prog_array.hdr) 324bda9e6c5add Alexei Starovoitov 2017-10-02 2441 return; 324bda9e6c5add Alexei Starovoitov 2017-10-02 2442 kfree_rcu(progs, rcu); 324bda9e6c5add Alexei Starovoitov 2017-10-02 2443 } 324bda9e6c5add Alexei Starovoitov 2017-10-02 2444
:::::: The code at line 2440 was first introduced by commit :::::: 46531a30364bd483bfa1b041c15d42a196e77e93 cgroup/bpf: fast path skb BPF filtering
:::::: TO: Pavel Begunkov <asml.silence@gmail.com> :::::: CC: Alexei Starovoitov <ast@kernel.org>
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
| |