From: Pavel Begunkov <asml.silence@gmail.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
io-uring@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, asml.silence@gmail.com
Subject: [PATCH 0/2] iter revert problems
Date: Mon, 9 Aug 2021 12:52:35 +0100 [thread overview]
Message-ID: <cover.1628509745.git.asml.silence@gmail.com> (raw)
For the bug description see 2/2. As mentioned there the current problems
is because of generic_write_checks(), but there was also a similar case
fixed in 5.12, which should have been triggerable by normal
write(2)/read(2) and others.
It may be better to enforce reexpands as a long term solution, but for
now this patchset is quickier and easier to backport.
Pavel Begunkov (2):
iov_iter: mark truncated iters
io_uring: don't retry with truncated iter
fs/io_uring.c | 6 ++++++
include/linux/uio.h | 5 ++++-
2 files changed, 10 insertions(+), 1 deletion(-)
--
2.32.0
next reply other threads:[~2021-08-09 11:53 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 11:52 Pavel Begunkov [this message]
2021-08-09 11:52 ` [PATCH 1/2] iov_iter: mark truncated iters Pavel Begunkov
2021-08-09 11:52 ` [PATCH 2/2] io_uring: don't retry with truncated iter Pavel Begunkov
2021-08-09 15:52 ` [PATCH 0/2] iter revert problems Al Viro
2021-08-09 18:56 ` Pavel Begunkov
2021-08-10 8:47 ` David Laight
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