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

Stephen Rothwell
2024-10-16T06:05:47Z

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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.

--
Cheers,
Stephen Rothwell

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