From: Zhang Yi <yi.zhang@huawei.com>
To: <linux-ext4@vger.kernel.org>
Cc: <linux-fsdevel@vger.kernel.org>, <tytso@mit.edu>,
<adilger.kernel@dilger.ca>, <jack@suse.cz>, <yi.zhang@huawei.com>,
<yukuai3@huawei.com>
Subject: [RFC PATCH v2 0/7] ext4, jbd2: fix 3 issues about bdev_try_to_free_page()
Date: Wed, 14 Apr 2021 21:47:30 +0800 [thread overview]
Message-ID: <20210414134737.2366971-1-yi.zhang@huawei.com> (raw)
Patch 1-2: fix a potential filesystem inconsistency problem.
Patch 3-7: fix two use after free problem.
Changes since v1:
- Do not use j_checkpoint_mutex to fix the filesystem inconsistency
problem, introduce a new mark instead.
- Fix superblock use-after-free issue in blkdev_releasepage().
- Avoid race between bdev_try_to_free_page() and ext4_put_super().
Zhang Yi (7):
jbd2: remove the out label in __jbd2_journal_remove_checkpoint()
jbd2: ensure abort the journal if detect IO error when writing
original buffer back
jbd2: don't abort the journal when freeing buffers
jbd2: do not free buffers in jbd2_journal_try_to_free_buffers()
ext4: use RCU to protect accessing superblock in blkdev_releasepage()
fs: introduce a usage count into the superblock
ext4: fix race between blkdev_releasepage() and ext4_put_super()
fs/block_dev.c | 13 ++++++----
fs/ext4/inode.c | 6 +++--
fs/ext4/super.c | 32 +++++++++++++++++++++----
fs/jbd2/checkpoint.c | 56 ++++++++++++++++++++++++-------------------
fs/jbd2/journal.c | 9 +++++++
fs/jbd2/transaction.c | 32 ++++++-------------------
include/linux/fs.h | 29 ++++++++++++++++++++++
include/linux/jbd2.h | 7 ++++++
8 files changed, 123 insertions(+), 61 deletions(-)
--
2.25.4
next reply other threads:[~2021-04-14 13:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-14 13:47 Zhang Yi [this message]
2021-04-14 13:47 ` [RFC PATCH v2 1/7] jbd2: remove the out label in __jbd2_journal_remove_checkpoint() Zhang Yi
2021-04-21 10:01 ` Jan Kara
2021-04-14 13:47 ` [RFC PATCH v2 2/7] jbd2: ensure abort the journal if detect IO error when writing original buffer back Zhang Yi
2021-04-21 13:20 ` Jan Kara
2021-04-14 13:47 ` [RFC PATCH v2 3/7] jbd2: don't abort the journal when freeing buffers Zhang Yi
2021-04-21 13:23 ` Jan Kara
2021-04-14 13:47 ` [RFC PATCH v2 4/7] jbd2: do not free buffers in jbd2_journal_try_to_free_buffers() Zhang Yi
2021-04-15 14:46 ` Christoph Hellwig
2021-04-14 13:47 ` [RFC PATCH v2 5/7] ext4: use RCU to protect accessing superblock in blkdev_releasepage() Zhang Yi
2021-04-15 14:48 ` Christoph Hellwig
2021-04-14 13:47 ` [RFC PATCH v2 6/7] fs: introduce a usage count into the superblock Zhang Yi
2021-04-15 14:40 ` Christoph Hellwig
2021-04-16 8:00 ` Zhang Yi
2021-04-14 13:47 ` [RFC PATCH v2 7/7] ext4: fix race between blkdev_releasepage() and ext4_put_super() Zhang Yi
2021-04-15 14:52 ` Christoph Hellwig
2021-04-16 8:00 ` Zhang Yi
2021-04-20 13:08 ` Christoph Hellwig
2021-04-21 13:46 ` Jan Kara
2021-04-21 16:57 ` Theodore Ts'o
2021-04-22 9:04 ` Jan Kara
2021-04-23 11:39 ` Zhang Yi
2021-04-23 16:06 ` Jan Kara
2021-04-23 14:40 ` Theodore Ts'o
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