From: Jens Axboe <axboe@kernel.dk>
To: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>,
linux-block@vger.kernel.org
Cc: syzbot <syzbot+ac94ae5f68b84197f41c@syzkaller.appspotmail.com>,
glider@google.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [PATCH] block: Fix wrong offset in bio_truncate()
Date: Thu, 20 Jan 2022 06:30:23 -0700 [thread overview]
Message-ID: <164268542304.61815.9970184633084359443.b4-ty@kernel.dk> (raw)
In-Reply-To: <875yqt1c9g.fsf@mail.parknet.co.jp>
On Sun, 09 Jan 2022 18:36:43 +0900, OGAWA Hirofumi wrote:
> bio_truncate() clears the buffer outside of last block of bdev, however
> current bio_truncate() is using the wrong offset of page. So it can
> return the uninitialized data.
>
> This happened when both of truncated/corrupted FS and userspace (via
> bdev) are trying to read the last of bdev.
>
> [...]
Applied, thanks!
[1/1] block: Fix wrong offset in bio_truncate()
commit: 3ee859e384d453d6ac68bfd5971f630d9fa46ad3
Best regards,
--
Jens Axboe
prev parent reply other threads:[~2022-01-20 13:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-07 11:40 [syzbot] KMSAN: uninit-value in fat_subdirs syzbot
2022-01-09 9:36 ` [PATCH] block: Fix wrong offset in bio_truncate() OGAWA Hirofumi
2022-01-10 8:00 ` Ming Lei
2022-01-20 4:43 ` OGAWA Hirofumi
2022-01-20 13:30 ` Jens Axboe [this message]
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