Re: [PATCH v2] fuse: break infinite loop in fuse_fill_write_pages()

From	Miklos Szeredi <miklos@szeredi.hu>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] fuse: break infinite loop in fuse_fill_write_pages()
Date	2015-11-10 15:50 +0100
Message-ID	<qtipb-6iz-1@gated-at.bofh.it> (permalink)
References	<qgiQ1-735-3@gated-at.bofh.it> <qiLuy-ok-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, Oct 12, 2015 at 3:33 PM, Roman Gushchin <klamm@yandex-team.ru> wrote:
> I got a report about unkillable task eating CPU. Further
> investigation shows, that the problem is in the fuse_fill_write_pages()
> function. If iov's first segment has zero length, we get an infinite
> loop, because we never reach iov_iter_advance() call.
>
> Fix this by calling iov_iter_advance() before repeating an attempt to
> copy data from userspace.

Thanks, queued in

  git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse.git for-next

Miklos
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Re: [PATCH v2] fuse: break infinite loop in fuse_fill_write_pages() Miklos Szeredi <miklos@szeredi.hu> - 2015-11-10 15:50 +0100

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