Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

[linux.git] / block / bio.c

diff --git a/block/bio.c b/block/bio.c
index f53a691b6533142a5a434b2d7bd1fc2a6f823f3f..cf7591551b1716b74fa3765cb1c271a554e8ef56 100644 (file)
--- a/block/bio.c
+++ b/block/bio.c
@@ -1090,9 +1090,12 @@ int bio_uncopy_user(struct bio *bio)
        if (!bio_flagged(bio, BIO_NULL_MAPPED)) {
                /*
                 * if we're in a workqueue, the request is orphaned, so
-                * don't copy into a random user address space, just free.
+                * don't copy into a random user address space, just free
+                * and return -EINTR so user space doesn't expect any data.
                 */
-               if (current->mm && bio_data_dir(bio) == READ)
+               if (!current->mm)
+                       ret = -EINTR;
+               else if (bio_data_dir(bio) == READ)
                        ret = bio_copy_to_iter(bio, bmd->iter);
                if (bmd->is_our_pages)
                        bio_free_pages(bio);