From: Ruslan Bilovol Subject: [PATCH 0/2] Misc ext4 fixes Date: Mon, 3 Jun 2013 13:00:14 +0300 Message-ID: <1370253616-8173-1-git-send-email-ruslan.bilovol@ti.com> Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org To: tytso@mit.edu, adilger.kernel@dilger.ca Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org Hello guys, Here are few patches that add sanity checks before dereferencing some pointers inside of ext4/jbd2 functions and help to avoid some crashes on systems under high load and limited resources. I met them in next usecase: writing a high-bitrate video to ext4 partition from HD webcam. The issues appear very rare. I do not know if these issues are already fixed in some maintainers repo, but they are still applicable to 3.10-rc4 tag on which they are based on. I understand that just sanity checking may not be enough and the root cause may be in some other place, so I hope the patches will be reviewed by ext4 guru as well. Regards, Ruslan Ruslan Bilovol (2): jbd2: check bh->b_data for NULL in jbd2_journal_get_descriptor_buffer before memset() ext4: add sanity checks in __ext4_check_dir_entry fs/ext4/dir.c | 8 ++++++-- fs/jbd2/journal.c | 2 +- 2 files changed, 7 insertions(+), 3 deletions(-) -- 1.7.9.5