tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f524a5e4dfb75b277c9a5ad819ca5f035f490f14 commit: f9f65ece370dcadeff00675aaec7899501005f1d [2441/2655] mm: BUG_ON to avoid NULL deference while __GFP_NOFAIL fails config: mips-randconfig-r111-20240802 (https://download.01.org/0day-ci/archive/20240802/202408022151.f3Mg7jo1-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 430b90f04533b099d788db2668176038be38c53b) reproduce: (https://download.01.org/0day-ci/archive/20240802/202408022151.f3Mg7jo1-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/202408022151.f3Mg7jo1-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) mm/util.c:129:6: sparse: sparse: multiple definitions for function 'kmemdup_noprof' mm/util.c: note: in included file (through include/linux/string.h, include/linux/bitmap.h, include/linux/cpumask.h, ...): include/linux/fortify-string.h:744:23: sparse: the previous one is here >> mm/util.c:670:17: sparse: sparse: cast from restricted gfp_t -- >> mm/page_alloc.c:4677:17: sparse: sparse: cast from restricted gfp_t mm/page_alloc.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/page_alloc.c:2599:6: sparse: sparse: context imbalance in 'free_unref_page' - wrong count at exit mm/page_alloc.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/spinlock.h:391:9: sparse: sparse: context imbalance in 'free_unref_folios' - unexpected unlock mm/page_alloc.c:2975:20: sparse: sparse: context imbalance in 'rmqueue_pcplist' - wrong count at exit mm/page_alloc.c:4642:9: sparse: sparse: context imbalance in 'alloc_pages_bulk_noprof' - different lock contexts for basic block mm/page_alloc.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false -- kernel/bpf/core.c:242:49: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:2010:43: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:2015:48: sparse: sparse: arithmetics on pointers to functions kernel/bpf/core.c:2283:77: sparse: sparse: subtraction of functions? Share your drugs kernel/bpf/core.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/xdp.h, ...): include/trace/events/xdp.h:321:1: sparse: sparse: Using plain integer as NULL pointer include/trace/events/xdp.h:348:1: sparse: sparse: Using plain integer as NULL pointer include/trace/events/xdp.h:382:1: sparse: sparse: Using plain integer as NULL pointer kernel/bpf/core.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t -- kernel/bpf/hashtab.c:1052:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __percpu *[assigned] pptr @@ got void * @@ kernel/bpf/hashtab.c:1052:30: sparse: expected void [noderef] __percpu *[assigned] pptr kernel/bpf/hashtab.c:1052:30: sparse: got void * kernel/bpf/hashtab.c:1058:44: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *ptr_to_pptr @@ got void [noderef] __percpu *[assigned] pptr @@ kernel/bpf/hashtab.c:1058:44: sparse: expected void *ptr_to_pptr kernel/bpf/hashtab.c:1058:44: sparse: got void [noderef] __percpu *[assigned] pptr kernel/bpf/hashtab.c:1059:34: sparse: sparse: cast removes address space '__percpu' of expression kernel/bpf/hashtab.c:1059:30: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __percpu *[assigned] pptr @@ got void * @@ kernel/bpf/hashtab.c:1059:30: sparse: expected void [noderef] __percpu *[assigned] pptr kernel/bpf/hashtab.c:1059:30: sparse: got void * kernel/bpf/hashtab.c:178:9: sparse: sparse: context imbalance in 'htab_map_delete_elem' - unexpected unlock kernel/bpf/hashtab.c:178:9: sparse: sparse: context imbalance in 'htab_lru_map_delete_elem' - unexpected unlock kernel/bpf/hashtab.c:178:9: sparse: sparse: context imbalance in '__htab_map_lookup_and_delete_elem' - unexpected unlock kernel/bpf/hashtab.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t kernel/bpf/hashtab.c: note: in included file (through include/linux/workqueue.h, include/linux/bpf.h): include/linux/rcupdate.h:870:9: sparse: sparse: context imbalance in '__htab_map_lookup_and_delete_batch' - unexpected unlock kernel/bpf/hashtab.c:2020:17: sparse: sparse: context imbalance in 'bpf_hash_map_seq_find_next' - unexpected unlock include/linux/rcupdate.h:870:9: sparse: sparse: context imbalance in 'bpf_hash_map_seq_stop' - unexpected unlock -- kernel/bpf/verifier.c:20572:38: sparse: sparse: subtraction of functions? Share your drugs kernel/bpf/verifier.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t kernel/bpf/verifier.c: note: in included file (through include/linux/bpf.h, include/linux/bpf-cgroup.h): include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar kernel/bpf/verifier.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t kernel/bpf/verifier.c: note: in included file (through include/linux/bpf.h, include/linux/bpf-cgroup.h): include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar kernel/bpf/verifier.c:19410:44: sparse: sparse: cast truncates bits from constant value (c000000001040000 becomes 1040000) kernel/bpf/verifier.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t kernel/bpf/verifier.c: note: in included file (through include/linux/bpf.h, include/linux/bpf-cgroup.h): include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar -- kernel/bpf/arena.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t -- kernel/bpf/bpf_local_storage.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t -- tools/lib/bpf/btf_relocate.c: note: in included file (through include/linux/fs.h, arch/mips/include/asm/elf.h, include/linux/elf.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t -- kernel/bpf/btf.c: note: in included file (through include/linux/mm.h, include/linux/pid_namespace.h, include/linux/ptrace.h, ...): >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t >> include/linux/slab.h:831:17: sparse: sparse: cast from restricted gfp_t kernel/bpf/btf.c: note: in included file (through include/linux/bpf.h, include/linux/bpf_verifier.h): include/linux/bpfptr.h:65:40: sparse: sparse: cast to non-scalar include/linux/bpfptr.h:65:40: sparse: sparse: cast from non-scalar vim +670 mm/util.c 632 633 /** 634 * __kvmalloc_node - attempt to allocate physically contiguous memory, but upon 635 * failure, fall back to non-contiguous (vmalloc) allocation. 636 * @size: size of the request. 637 * @b: which set of kmalloc buckets to allocate from. 638 * @flags: gfp mask for the allocation - must be compatible (superset) with GFP_KERNEL. 639 * @node: numa node to allocate from 640 * 641 * Uses kmalloc to get the memory but if the allocation fails then falls back 642 * to the vmalloc allocator. Use kvfree for freeing the memory. 643 * 644 * GFP_NOWAIT and GFP_ATOMIC are not supported, neither is the __GFP_NORETRY modifier. 645 * __GFP_RETRY_MAYFAIL is supported, and it should be used only if kmalloc is 646 * preferable to the vmalloc fallback, due to visible performance drawbacks. 647 * 648 * Return: pointer to the allocated memory of %NULL in case of failure 649 */ 650 void *__kvmalloc_node_noprof(DECL_BUCKET_PARAMS(size, b), gfp_t flags, int node) 651 { 652 void *ret; 653 654 /* 655 * It doesn't really make sense to fallback to vmalloc for sub page 656 * requests 657 */ 658 ret = __kmalloc_node_noprof(PASS_BUCKET_PARAMS(size, b), 659 kmalloc_gfp_adjust(flags, size), 660 node); 661 if (ret || size <= PAGE_SIZE) 662 return ret; 663 664 /* non-sleeping allocations are not supported by vmalloc */ 665 if (!gfpflags_allow_blocking(flags)) 666 return NULL; 667 668 /* Don't even allow crazy sizes */ 669 if (unlikely(size > INT_MAX)) { > 670 BUG_ON(flags & __GFP_NOFAIL); 671 WARN_ON_ONCE(!(flags & __GFP_NOWARN)); 672 return NULL; 673 } 674 675 /* 676 * kvmalloc() can always use VM_ALLOW_HUGE_VMAP, 677 * since the callers already cannot assume anything 678 * about the resulting pointer, and cannot play 679 * protection games. 680 */ 681 return __vmalloc_node_range_noprof(size, 1, VMALLOC_START, VMALLOC_END, 682 flags, PAGE_KERNEL, VM_ALLOW_HUGE_VMAP, 683 node, __builtin_return_address(0)); 684 } 685 EXPORT_SYMBOL(__kvmalloc_node_noprof); 686 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
