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b=XAyX7KV3tlQo67bwjyViZhx49oCRLY7zjDGv8iHoFFh9SFZiMPuHDTQe/nIJF0Y2o e+1rZQuAuMnAcGWutUfJU0UnK5OBrZNIYQ0L8dq7MQA2LE7y/my+8wZI96AqX4sDzx EBYYvNC2Yet+PdyAgUjNFY1jV3aCbuzOsUDC3TLU= Date: Mon, 15 Jul 2024 20:51:40 -0700 From: Andrew Morton To: syzbot Cc: aleksandr.mikhalitsyn@canonical.com, brauner@kernel.org, jack@suse.cz, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] [mm?] BUG: sleeping function called from invalid context in vma_alloc_folio_noprof Message-Id: <20240715205140.c260410215836e753a44b5e9@linux-foundation.org> In-Reply-To: <00000000000069b4ee061d5334e4@google.com> References: <00000000000069b4ee061d5334e4@google.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: C523640016 X-Stat-Signature: wunru9g7i4icjzdchipn7h5n3w1saks8 X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1721101906-581629 X-HE-Meta: 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 QP5KnCd1 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 15 Jul 2024 18:24:19 -0700 syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 3fe121b62282 Add linux-next specific files for 20240712 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=12ba9149980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=98dd8c4bab5cdce > dashboard link: https://syzkaller.appspot.com/bug?extid=a3e82ae343b26b4d2335 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=144c4b66980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=163c28f6980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/8c6fbf69718d/disk-3fe121b6.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/39fc7e43dfc1/vmlinux-3fe121b6.xz > kernel image: https://storage.googleapis.com/syzbot-assets/0a78e70e4b4e/bzImage-3fe121b6.xz > > The issue was bisected to: > > commit ca567df74a28a9fb368c6b2d93e864113f73f5c2 > Author: Christian Brauner > Date: Sun Jun 7 20:47:08 2020 +0000 > > nsfs: add pid translation ioctls > yup, thanks. Breaking out of the switch statement while holding rcu_read_lock().