From: Chang Yu Date: Tue, 1 Oct 2024 06:31:52 +0000 (-0700) Subject: netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer X-Git-Tag: v6.12~265^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f6023535b52f5a066fa52fcfd0dc51c7f7894ce6;p=platform%2Fkernel%2Flinux-amlogic.git netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer Use folioq_count instead of folioq_nr_slots to fix a KMSAN uninit-value error in netfs_clear_buffer Signed-off-by: Chang Yu Link: https://lore.kernel.org/r/ZvuXWC2bYpvQsWgS@gmail.com Fixes: cd0277ed0c18 ("netfs: Use new folio_queue data type and iterator instead of xarray iter") Acked-by: David Howells Reported-by: syzbot+921873345a95f4dae7e9@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=921873345a95f4dae7e9 Signed-off-by: Christian Brauner --- diff --git a/fs/netfs/misc.c b/fs/netfs/misc.c index 63280791de3b..78fe5796b2b2 100644 --- a/fs/netfs/misc.c +++ b/fs/netfs/misc.c @@ -102,7 +102,7 @@ void netfs_clear_buffer(struct netfs_io_request *rreq) while ((p = rreq->buffer)) { rreq->buffer = p->next; - for (int slot = 0; slot < folioq_nr_slots(p); slot++) { + for (int slot = 0; slot < folioq_count(p); slot++) { struct folio *folio = folioq_folio(p, slot); if (!folio) continue;