kernel_optimize_test/fs/pstore
Kees Cook bac6f6cda2 pstore/ram: Fix failure-path memory leak in ramoops_init
As reported by nixiaoming, with some minor clarifications:

1) memory leak in ramoops_register_dummy():
   dummy_data = kzalloc(sizeof(*dummy_data), GFP_KERNEL);
   but no kfree() if platform_device_register_data() fails.

2) memory leak in ramoops_init():
   Missing platform_device_unregister(dummy) and kfree(dummy_data)
   if platform_driver_register(&ramoops_driver) fails.

I've clarified the purpose of ramoops_register_dummy(), and added a
common cleanup routine for all three failure paths to call.

Reported-by: nixiaoming <nixiaoming@huawei.com>
Cc: stable@vger.kernel.org
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-09-30 10:15:41 -07:00
..
ftrace.c pstore: Remove write_buf() callback 2017-03-07 14:01:02 -08:00
inode.c vfs: change inode times to use struct timespec64 2018-06-05 16:57:31 -07:00
internal.h pstore: Select compression at runtime 2018-03-07 12:43:35 -08:00
Kconfig pstore: add zstd compression support 2018-08-03 18:12:18 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
platform.c pstore: add zstd compression support 2018-08-03 18:12:18 -07:00
pmsg.c pstore: Create common record initializer 2017-05-31 10:13:44 -07:00
ram_core.c pstore: Fix incorrect persistent ram buffer mapping 2018-09-13 09:14:57 -07:00
ram.c pstore/ram: Fix failure-path memory leak in ramoops_init 2018-09-30 10:15:41 -07:00