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selftests/bpf: Fix build error with llvm 19

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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>
This commit is contained in:
Alexei Starovoitov 2024-11-16 10:56:17 -08:00
parent fab974e648
commit 608e99f786
1 changed files with 1 additions and 1 deletions
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2
tools/testing/selftests/bpf/progs/verifier_arena_large.c
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@ -87,7 +87,7 @@ __noinline int alloc_pages(int page_cnt, int pages_atonce, bool first_pass,
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)