linux-kernel - [PATCH 0/2] Misc ext4 fixes

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Message-Id: <1370253616-8173-1-git-send-email-ruslan.bilovol@ti.com>
Date:	Mon,  3 Jun 2013 13:00:14 +0300
From:	Ruslan Bilovol <ruslan.bilovol@...com>
To:	tytso@....edu, adilger.kernel@...ger.ca
Cc:	linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] Misc ext4 fixes

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

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