From: Matthew Wilcox <willy@infradead.org>
To: Chenyuan Yang <chenyuan0y@gmail.com>
Cc: akpm@linux-foundation.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, syzkaller@googlegroups.com,
Zijie Zhao <zzjas98@gmail.com>,
John Hubbard <jhubbard@nvidia.com>
Subject: Re: [Linux Kernel Bug][mm/gup] 3 Warning Crashes: kmalloc bug in gup_test_ioctl, is_valid_gup_args, pin_user_pages_fast
Date: Fri, 26 Jan 2024 17:11:14 +0000 [thread overview]
Message-ID: <ZbPnsnwnVKvI1rQ4@casper.infradead.org> (raw)
In-Reply-To: <CALGdzuqqU1PJ3BZ2PRtCHXyrsZ2xtzk38abB0=K7V-kOCYgHfA@mail.gmail.com>
On Fri, Jan 26, 2024 at 11:04:53AM -0600, Chenyuan Yang wrote:
> Dear Developers for Linux Memory Management,
>
> We encountered 3 warning crashes when testing the memory management
> with Syzkaller and our generated specifications:
These all come in through gup_test_ioctl(). It's my impression
that this is something you can enable to wreak havoc on your kernel
and it's not something which should ever be exposed to fuzzers.
next prev parent reply other threads:[~2024-01-26 17:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-26 17:04 [Linux Kernel Bug][mm/gup] 3 Warning Crashes: kmalloc bug in gup_test_ioctl, is_valid_gup_args, pin_user_pages_fast Chenyuan Yang
2024-01-26 17:11 ` Matthew Wilcox [this message]
2024-01-26 17:31 ` Chenyuan Yang
2024-01-26 18:34 ` Matthew Wilcox
2024-01-26 19:08 ` John Hubbard
2024-01-26 19:23 ` Chenyuan Yang
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