ext4: replace BUG_ON with WARN_ONCE in ext4_end_bio()
Add fallback code and a WARN_ONCE() call instead of a BUG_ON() in
the ext4_end_bio() function.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 208241b..1a82138 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -297,8 +297,17 @@ static void ext4_end_bio(struct bio *bio)
{
ext4_io_end_t *io_end = bio->bi_private;
sector_t bi_sector = bio->bi_iter.bi_sector;
+ char b[BDEVNAME_SIZE];
- BUG_ON(!io_end);
+ if (WARN_ONCE(!io_end, "io_end is NULL: %s: sector %Lu len %u err %d\n",
+ bdevname(bio->bi_bdev, b),
+ (long long) bio->bi_iter.bi_sector,
+ (unsigned) bio_sectors(bio),
+ bio->bi_error)) {
+ ext4_finish_bio(bio);
+ bio_put(bio);
+ return;
+ }
bio->bi_end_io = NULL;
if (bio->bi_error) {