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| author | Chang Yu <marcus.yu.56@gmail.com> | 2024-09-30 23:31:52 -0700 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-10-01 16:02:42 +0200 |
| commit | f6023535b52f5a066fa52fcfd0dc51c7f7894ce6 (patch) | |
| tree | c62289d0ef5eeacd51457314f28d0ffaf598e508 | |
| parent | 0d24852bd71ec85ca0016b6d6fc997e6a3381552 (diff) | |
| download | lwn-f6023535b52f5a066fa52fcfd0dc51c7f7894ce6.tar.gz lwn-f6023535b52f5a066fa52fcfd0dc51c7f7894ce6.zip | |
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 <marcus.yu.56@gmail.com>
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 <dhowells@redhat.com>
Reported-by: syzbot+921873345a95f4dae7e9@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=921873345a95f4dae7e9
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | fs/netfs/misc.c | 2 |
1 files changed, 1 insertions, 1 deletions
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; |