bcachefs: Fix bch2_prt_bitflags()

This fixes an infinite loop when there's a set bit at position >= 32.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/fs/bcachefs/printbuf.c b/fs/bcachefs/printbuf.c
index de41f9a144920b83fb816182a4c97fecc1df87bf..5e653eb81d54f8fdfcca37038eeaf5a1febdb8e7 100644 (file)
--- a/fs/bcachefs/printbuf.c
+++ b/fs/bcachefs/printbuf.c
@@ -415,11 +415,11 @@ void bch2_prt_bitflags(struct printbuf *out,
        while (list[nr])
                nr++;
 
-       while (flags && (bit = __ffs(flags)) < nr) {
+       while (flags && (bit = __ffs64(flags)) < nr) {
                if (!first)
                        bch2_prt_printf(out, ",");
                first = false;
                bch2_prt_printf(out, "%s", list[bit]);
-               flags ^= 1 << bit;
+               flags ^= BIT_ULL(bit);
        }
 }