Merge v6.2-rc6 into drm-next

Due to holidays we started -next with more -fixes in-flight than
usual, and people have been asking where they are. Backmerge to get
things better in sync.

Conflicts:
- Tiny conflict in drm_fbdev_generic.c between variable rename and
  missing error handling that got added.
- Conflict in drm_fb_helper.c between the added call to vgaswitcheroo
  in drm_fb_helper_single_fb_probe and a refactor patch that extracted
  lots of helpers and incidentally removed the dev local variable.
  Readd it to make things compile.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 22 insertions, 0 deletions

diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c
index 2c53fbb8d918..a9c5c3f720ad 100644
--- a/fs/zonefs/super.c
+++ b/fs/zonefs/super.c
@@ -442,6 +442,10 @@ static int zonefs_io_error_cb(struct blk_zone *zone, unsigned int idx,
 			data_size = zonefs_check_zone_condition(inode, zone,
 								false, false);
 		}
+	} else if (sbi->s_mount_opts & ZONEFS_MNTOPT_ERRORS_RO &&
+		   data_size > isize) {
+		/* Do not expose garbage data */
+		data_size = isize;
 	}
 
 	/*
@@ -805,6 +809,24 @@ static ssize_t zonefs_file_dio_append(struct kiocb *iocb, struct iov_iter *from)
 
 	ret = submit_bio_wait(bio);
 
+	/*
+	 * If the file zone was written underneath the file system, the zone
+	 * write pointer may not be where we expect it to be, but the zone
+	 * append write can still succeed. So check manually that we wrote where
+	 * we intended to, that is, at zi->i_wpoffset.
+	 */
+	if (!ret) {
+		sector_t wpsector =
+			zi->i_zsector + (zi->i_wpoffset >> SECTOR_SHIFT);
+
+		if (bio->bi_iter.bi_sector != wpsector) {
+			zonefs_warn(inode->i_sb,
+				"Corrupted write pointer %llu for zone at %llu\n",
+				wpsector, zi->i_zsector);
+			ret = -EIO;
+		}
+	}
+
 	zonefs_file_write_dio_end_io(iocb, size, ret, 0);
 	trace_zonefs_file_dio_append(inode, size, ret);