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Mon, 06 Feb 2023 22:23:57 -0800 (PST) Date: Mon, 06 Feb 2023 22:23:56 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004b0d5205f41631be@google.com> Subject: [syzbot] WARNING in is_valid_gup_args From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: iornwjxaahsoumnmog93rgyhskd3id6h X-Rspamd-Queue-Id: C62FB40003 X-HE-Tag: 1675751037-52577 X-HE-Meta: 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 2WTp6FD4 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 WizkrigX NBAROqmtu8xQtWgyHlg2afC2tqAWLPZgAsBvN2dMKwdWT86alSCgX4wGVTthv/QbnO+eA7t8zQ5HE/ik4S6zH/v8CxeQMdMyR/4EmS3mbRwhU9TtFlwCvcJ0hfK6JyRXPdnxgW9YNS6N8FmfibDSUhuwqkWoFYmgiJxhZfmnAaiBg+iLmXmiXdmLRP4Aey0otn4RpWvocdYO1CNBUSPWwU4EyBnRilWAeOxyD4ZLR8iC98LqLeJg+m8rTV8wLlrlOpLhvRIOHJf3Vqb2TDMbYp4x7tRW3B+lN4vxilqDeW4CTCrp0toUHzztgOY5O7rqzPNd43EXcRiE1iEgn9ikRg== 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: Hello, syzbot found the following issue on: HEAD commit: 49a8133221c7 Add linux-next specific files for 20230207 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15016013480000 kernel config: https://syzkaller.appspot.com/x/.config?x=3691b32dd4410e01 dashboard link: https://syzkaller.appspot.com/bug?extid=1f0c9407f4d20f7488b9 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6277c699d71e/disk-49a81332.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/cbef27c2f238/vmlinux-49a81332.xz kernel image: https://storage.googleapis.com/syzbot-assets/7c0c68d93ac8/bzImage-49a81332.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1f0c9407f4d20f7488b9@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11452 at mm/gup.c:2121 is_valid_gup_args+0x1d8/0x230 mm/gup.c:2121 Modules linked in: CPU: 1 PID: 11452 Comm: syz-executor.0 Not tainted 6.2.0-rc7-next-20230207-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:is_valid_gup_args+0x1d8/0x230 mm/gup.c:2121 Code: c7 ff 48 83 3c 24 00 0f 85 7a ff ff ff e8 10 3a c7 ff 0f 0b 45 31 e4 eb cd e8 04 3a c7 ff 0f 0b 45 31 e4 eb c1 e8 f8 39 c7 ff <0f> 0b 45 31 e4 eb b5 e8 ec 39 c7 ff 0f 0b 45 31 e4 eb a9 e8 e0 39 RSP: 0018:ffffc900091f72c0 EFLAGS: 00010212 RAX: 000000000000165e RBX: 0000000000040000 RCX: ffffc90003dc1000 RDX: 0000000000040000 RSI: ffffffff81bd3248 RDI: 0000000000000005 RBP: ffffc900091f7320 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000040000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000040000 R15: 0000000000040000 FS: 00007f31c3ca4700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31624000 CR3: 0000000027a30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pin_user_pages_fast+0x83/0x100 mm/gup.c:3089 iov_iter_extract_user_pages lib/iov_iter.c:2160 [inline] iov_iter_extract_pages+0x2b9/0x1e20 lib/iov_iter.c:2229 __bio_iov_iter_get_pages block/bio.c:1267 [inline] bio_iov_iter_get_pages block/bio.c:1340 [inline] bio_iov_iter_get_pages+0x354/0x1580 block/bio.c:1327 iomap_dio_bio_iter+0x830/0x1440 fs/iomap/direct-io.c:323 iomap_dio_iter fs/iomap/direct-io.c:436 [inline] __iomap_dio_rw+0xd81/0x1d80 fs/iomap/direct-io.c:594 iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:682 ext4_dio_write_iter fs/ext4/file.c:587 [inline] ext4_file_write_iter+0x1053/0x1710 fs/ext4/file.c:698 call_write_iter include/linux/fs.h:1851 [inline] do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735 do_iter_write+0x182/0x700 fs/read_write.c:861 vfs_writev+0x1aa/0x670 fs/read_write.c:934 do_pwritev+0x1b6/0x270 fs/read_write.c:1031 __do_sys_pwritev2 fs/read_write.c:1090 [inline] __se_sys_pwritev2 fs/read_write.c:1081 [inline] __x64_sys_pwritev2+0xef/0x150 fs/read_write.c:1081 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f31c2e8c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f31c3ca4168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f31c2fabf80 RCX: 00007f31c2e8c0c9 RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 00007f31c2ee7ae9 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000001400 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff54ef18ef R14: 00007f31c3ca4300 R15: 0000000000022000 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.