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Tue, 11 Jun 2024 17:46:35 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 6CkWGXuNaGa4CAAAD6G6ig (envelope-from ); Tue, 11 Jun 2024 17:46:35 +0000 Date: Tue, 11 Jun 2024 19:46:33 +0200 From: Oscar Salvador To: Andrew Morton Cc: syzbot , linux-kernel@vger.kernel.org, linux-mm@kvack.org, muchun.song@linux.dev, syzkaller-bugs@googlegroups.com, Vivek Kasireddy Subject: Re: [syzbot] [mm?] general protection fault in dequeue_hugetlb_folio_nodemask (2) Message-ID: References: <0000000000004f12bb061a9acf07@google.com> <20240611103005.ae4170608bd15d63adee2492@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240611103005.ae4170608bd15d63adee2492@linux-foundation.org> X-Rspamd-Action: no action X-Rspam-User: X-Rspamd-Queue-Id: CDE0240002 X-Rspamd-Server: rspam01 X-Stat-Signature: 7ii71ss9gcszpjw69k8g5x4tan5kt8t1 X-HE-Tag: 1718127998-223526 X-HE-Meta: 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 sppDzCmG 1tNnLDUkfsJNXVKkQKeTqb+6uk4xXoTHaJ1kn/oly/kiJ8pJqq/p+EijPpN4N5ps3f3iKjPB3J++bO9mu7VIGu5OU7OvMRLXufvihILTDznXHo3MbKfDMgMxFc8+xl/tQPTuNbPnPkQG14FtMABaV//iytQr2kPdMo/y0TxdTYitSR4aRnUFStG3P8ZTIKLFsHPN/qKPZJQX43V3P/Ng3X7VWlCda98s30kUovvLd0rjZzBwv13pJ3V4KCkJUU5YIUDQM9kjcEXVqOIY5xi150QwT2l/ix7StVTmqvRttt7lfQYytn9aTHXBdFpxuig3jnNzB1Db0v9In7wuYZLF3S0MzkZNCA6kTKOhaUNnWyjPCpVw0+HERNoQY8lOdQyEfEVcpD5qouxqXFYfKi6uRngQlPhW39KXhXYqaU5uF0MvYN57mdjL2KB9axBl7x6bs3B+S X-Bogosity: Ham, tests=bogofilter, spamicity=0.001387, 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 Tue, Jun 11, 2024 at 10:30:05AM -0700, Andrew Morton wrote: > On Tue, 11 Jun 2024 03:34:25 -0700 syzbot wrote: > > > Hello, > > > > syzbot found the following issue on: > > Thanks. > > > Call Trace: > > > > alloc_hugetlb_folio_nodemask+0xae/0x3f0 mm/hugetlb.c:2603 > > memfd_alloc_folio+0x15e/0x390 mm/memfd.c:75 > > memfd_pin_folios+0x1066/0x1720 mm/gup.c:3864 > > udmabuf_create+0x658/0x11c0 drivers/dma-buf/udmabuf.c:353 > > udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:420 [inline] > > udmabuf_ioctl+0x304/0x4f0 drivers/dma-buf/udmabuf.c:451 > > vfs_ioctl fs/ioctl.c:51 [inline] > > __do_sys_ioctl fs/ioctl.c:907 [inline] > > __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 > > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > I think we can pretty confidently point at the series "mm/gup: > Introduce memfd_pin_folios() for pinning memfd folios". I'll drop the > v14 series. jfyi: I am trying to reproduce this locally. -- Oscar Salvador SUSE Labs