Re: linux-next: build failure after merge of the bpf-next tree

Alexei Starovoitov
2024-10-16T16:25:54Z

On Tue, Oct 15, 2024 at 11:05 PM Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Hi all,
>
> After merging the bpf-next tree, today's linux-next build (arm64
> defconfig) failed like this:
>
> Building: arm64 defconfig
> In file included from arch/arm64/include/asm/thread_info.h:17,
> from include/linux/thread_info.h:60,
> from arch/arm64/include/asm/preempt.h:6,
> from include/linux/preempt.h:79,
> from include/linux/spinlock.h:56,
> from include/linux/mmzone.h:8,
> from include/linux/gfp.h:7,
> from include/linux/slab.h:16,
> from mm/slab_common.c:7:
> mm/slab_common.c: In function 'bpf_get_kmem_cache':
> arch/arm64/include/asm/memory.h:427:66: error: passing argument 1 of 'virt_to_pfn' makes pointer from integer without a cast [-Wint-conversion]
> 427 | __is_lm_address(__addr) && pfn_is_map_memory(virt_to_pfn(__addr)); \
> | ^~~~~~
> | |
> | u64 {aka long long unsigned int}
> mm/slab_common.c:1260:14: note: in expansion of macro 'virt_addr_valid'
> 1260 | if (!virt_addr_valid(addr))
> | ^~~~~~~~~~~~~~~
> arch/arm64/include/asm/memory.h:382:53: note: expected 'const void *' but argument is of type 'u64' {aka 'long long unsigned int'}
> 382 | static inline unsigned long virt_to_pfn(const void *kaddr)
> | ~~~~~~~~~~~~^~~~~
>
> Caused by commit
>
> 04b069ff0181 ("mm/bpf: Add bpf_get_kmem_cache() kfunc")
>
> I have reverted commit
>
> 08c837461891 ("Merge branch 'bpf-add-kmem_cache-iterator-and-kfunc'")
>
> for today.

Thanks for flagging.
Fixed and force pushed.