ecryptfs: replace BUG_ON with error handling code
authorAditya Pakki <pakki001@umn.edu>
Fri, 14 Feb 2020 18:21:01 +0000 (12:21 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 28 Feb 2020 16:22:26 +0000 (17:22 +0100)
commitcfde4697ea4d66c7bfb1599eef189211471b2c38
tree87fdab9666260c1f11f3880d64ca0ad29c5beb61
parent4c585d1e98d946cc89d9c3bbeaaa700e85d55599
ecryptfs: replace BUG_ON with error handling code

commit 2c2a7552dd6465e8fde6bc9cccf8d66ed1c1eb72 upstream.

In crypt_scatterlist, if the crypt_stat argument is not set up
correctly, the kernel crashes. Instead, by returning an error code
upstream, the error is handled safely.

The issue is detected via a static analysis tool written by us.

Fixes: 237fead619984 (ecryptfs: fs/Makefile and fs/Kconfig)
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Tyler Hicks <code@tyhicks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ecryptfs/crypto.c