No description
  • C 98.2%
  • Assembly 1%
  • Makefile 0.3%
  • Shell 0.2%
  • Python 0.1%
Find a file
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Julian Sun 703b2c7e07 ocfs2: fix null-ptr-deref when journal load failed.
commit 5784d9fcfd43bd853654bb80c87ef293b9e8e80a upstream.

During the mounting process, if journal_reset() fails because of too short
journal, then lead to jbd2_journal_load() fails with NULL j_sb_buffer.
Subsequently, ocfs2_journal_shutdown() calls
jbd2_journal_flush()->jbd2_cleanup_journal_tail()->
__jbd2_update_log_tail()->jbd2_journal_update_sb_log_tail()
->lock_buffer(journal->j_sb_buffer), resulting in a null-pointer
dereference error.

To resolve this issue, we should check the JBD2_LOADED flag to ensure the
journal was properly loaded.  Additionally, use journal instead of
osb->journal directly to simplify the code.

Link: https://syzkaller.appspot.com/bug?extid=05b9b39d8bdfe1a0861f
Link: https://lkml.kernel.org/r/20240902030844.422725-1-sunjunchao2870@gmail.com
Fixes: f6f50e28f0 ("jbd2: Fail to load a journal if it is too short")
Signed-off-by: Julian Sun <sunjunchao2870@gmail.com>
Reported-by: syzbot+05b9b39d8bdfe1a0861f@syzkaller.appspotmail.com
Suggested-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:41 +01:00
arch parisc: Fix 64-bit userspace syscall path 2024-11-08 16:20:40 +01:00
block block, bfq: don't break merge chain in bfq_split_bfqq() 2024-11-08 16:20:28 +01:00
certs
crypto crypto: aead,cipher - zeroize key buffer after use 2024-11-08 16:20:33 +01:00
Documentation proc: add config & param to block forcing mem writes 2024-11-08 16:20:38 +01:00
drivers drm: omapdrm: Add missing check for alloc_ordered_workqueue 2024-11-08 16:20:40 +01:00
fs ocfs2: fix null-ptr-deref when journal load failed. 2024-11-08 16:20:41 +01:00
include drm/printer: Allow NULL data in devcoredump printer 2024-11-08 16:20:39 +01:00
init
ipc
kernel perf/core: Fix small negative period being ignored 2024-11-08 16:20:40 +01:00
lib debugobjects: Fix conditions in fill_pool() 2024-11-08 16:20:34 +01:00
LICENSES
mm mm: krealloc: consider spare memory for __GFP_ZERO 2024-11-08 16:20:40 +01:00
net tcp: avoid reusing FIN_WAIT2 when trying to find port in connect() process 2024-11-08 16:20:37 +01:00
samples
scripts
security proc: add config & param to block forcing mem writes 2024-11-08 16:20:38 +01:00
sound ALSA: core: add isascii() check to card ID generator 2024-11-08 16:20:40 +01:00
tools selftests: vDSO: fix vDSO symbols lookup for powerpc64 2024-11-08 16:20:39 +01:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-11-08 16:20:33 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.