From: Al Viro <viro@zeniv.linux.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: syzbot <syzbot+3d2c27c2b7dc2a94814d@syzkaller.appspotmail.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
linux-kernel@vger.kernel.org, snovitoll@gmail.com,
syzkaller-bugs@googlegroups.com
Subject: Re: WARNING in iov_iter_revert (2)
Date: Sat, 20 Feb 2021 19:40:49 +0000 [thread overview]
Message-ID: <YDFlwf3AKbLiZhvh@zeniv-ca.linux.org.uk> (raw)
In-Reply-To: <YDFjNRv+DNL/Xh8W@zeniv-ca.linux.org.uk>
On Sat, Feb 20, 2021 at 07:29:57PM +0000, Al Viro wrote:
> And then you notice that it has reports
> successful write of amount other than what you'd passed and tries
> to pull back.
Sorry, half-edited sentence has escaped ;-/ Should be
"And there the caller notices that callback has reported a successful
write, but the amount apparently written is not the same as the
amount it had asked to write. It interprets that as a short write
and tries to pull back. Only it's actually _forward_, since we'd
asked to write 0 bytes and got a small positive number from the
callback."
next prev parent reply other threads:[~2021-02-20 19:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-16 16:18 syzbot
2021-02-20 14:25 ` syzbot
[not found] ` <CAHk-=wiEBTD884i-U9DU7aDdRxXuz66Q1r-rKTiJUzZoYFgp+g@mail.gmail.com>
2021-02-20 17:38 ` Al Viro
2021-02-20 17:40 ` [git pull] work.namei stuff (v2) Al Viro
2021-02-21 17:43 ` Linus Torvalds
2021-02-21 18:39 ` pr-tracker-bot
2021-02-20 19:29 ` WARNING in iov_iter_revert (2) Al Viro
2021-02-20 19:40 ` Al Viro [this message]
2021-02-21 0:45 ` Linus Torvalds
2021-02-21 8:37 ` Sabyrzhan Tasbolatov
2021-02-21 17:20 ` Linus Torvalds
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