diff options
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index a5904c0ac794..0e74fae25896 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -4951,7 +4951,7 @@ static bool is_pow_of_2(size_t x) static size_t adjust_ringbuf_sz(size_t sz) { __u32 page_sz = sysconf(_SC_PAGE_SIZE); - __u32 i, mul; + __u32 mul; /* if user forgot to set any size, make sure they see error */ if (sz == 0) @@ -4967,9 +4967,7 @@ static size_t adjust_ringbuf_sz(size_t sz) * user-set size to satisfy both user size request and kernel * requirements and substitute correct max_entries for map creation. */ - for (i = 0, mul = 1; ; i++, mul <<= 1) { - if (mul > UINT_MAX / page_sz) /* prevent __u32 overflow */ - break; + for (mul = 1; mul <= UINT_MAX / page_sz; mul <<= 1) { if (mul * page_sz > sz) return mul * page_sz; } |