On 9/6/22 08:51, Stephen Rothwell wrote:
Hi all,
Hi,
After merging the slab tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:
kernel/bpf/memalloc.c: In function 'bpf_mem_free':
kernel/bpf/memalloc.c:613:33: error: implicit declaration of function '__ksize'; did you mean 'ksize'? [-Werror=implicit-function-declaration]
613 | idx = bpf_mem_cache_idx(__ksize(ptr - LLIST_NODE_SZ));
| ^~~~~~~
| ksize
Could you use ksize() here? I'm guessing you picked __ksize() because
kasan_unpoison_element() in mm/mempool.c did, but that's to avoid
kasan_unpoison_range() in ksize() as this caller does it differently.
AFAICS your function doesn't handle kasan differently, so ksize() should
be fine.
Caused by commit
8dfa9d554061 ("mm/slab_common: move declaration of __ksize() to mm/slab.h")
interacting with commit
7c8199e24fa0 ("bpf: Introduce any context BPF specific memory allocator.")
from the bpf-next tree.
I have reverted the slab tree commit for today.
