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From: Pavel Begunkov <>
To: Alexander Viro <>,, Jens Axboe <>,
Subject: [PATCH 0/2] iter revert problems
Date: Mon,  9 Aug 2021 12:52:35 +0100	[thread overview]
Message-ID: <> (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(-)


             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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