fscrypt: remove WARN_ON_ONCE() when decryption fails

If decrypting a block fails, fscrypt did a WARN_ON_ONCE().  But WARN is
meant for kernel bugs, which this isn't; this could be hit by fuzzers
using fault injection, for example.  Also, there is already a proper
warning message logged in fscrypt_do_page_crypto(), so the WARN doesn't
add much.

Just remove the unnessary WARN.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/crypto/bio.c b/fs/crypto/bio.c
index f5b69b9531f6..41dde4578f3b 100644
--- a/fs/crypto/bio.c
+++ b/fs/crypto/bio.c
@@ -37,12 +37,10 @@ static void __fscrypt_decrypt_bio(struct bio *bio, bool done)
                 int ret = fscrypt_decrypt_page(page->mapping->host, page,
                                 PAGE_SIZE, 0, page->index);
 
-                if (ret) {
-                        WARN_ON_ONCE(1);
+                if (ret)
                         SetPageError(page);
-                } else if (done) {
+                else if (done)
                         SetPageUptodate(page);
-                }
                 if (done)
                         unlock_page(page);
         }