6.12-stable review patch. If anyone has any objections, please let me know.
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From: Alexei Starovoitov ast@kernel.org
commit 608e99f7869e3a6e028c7cba14a896c7797e8746 upstream.
llvm 19 fails to compile arena self test: CLNG-BPF [test_progs] verifier_arena_large.bpf.o progs/verifier_arena_large.c:90:24: error: unsupported signed division, please convert to unsigned div/mod. 90 | pg_idx = (pg - base) / PAGE_SIZE;
Though llvm <= 18 and llvm >= 20 don't have this issue, fix the test to avoid the build error.
Reported-by: Jiri Olsa olsajiri@gmail.com Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Yifei Liu yifei.l.liu@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/bpf/progs/verifier_arena_large.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/testing/selftests/bpf/progs/verifier_arena_large.c +++ b/tools/testing/selftests/bpf/progs/verifier_arena_large.c @@ -87,7 +87,7 @@ __noinline int alloc_pages(int page_cnt, NUMA_NO_NODE, 0); if (!pg) return step; - pg_idx = (pg - base) / PAGE_SIZE; + pg_idx = (unsigned long) (pg - base) / PAGE_SIZE; if (first_pass) { /* Pages must be allocated sequentially */ if (pg_idx != i)