From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B47CC04EB8 for ; Sat, 8 Dec 2018 10:51:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C0F72082D for ; Sat, 8 Dec 2018 10:51:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0C0F72082D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by 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AA+aEWYfRUqKjc8jlP8xHwG5mu83FUF549smks5IJM2I3mhU4bS2PW7m ySOfXeQXeuwUvy7RJlf5acS0lNUit3ux0C/pLNACDCo61bMc X-Google-Smtp-Source: AFSGD/WRnjW34ANtJSbmEcieSE1puS8/RlhCih/8Ub1grD4Oxn9fBvpN6ApGVnrC8mXe3mM8XO/BHRYOBset6hsmp/mYsVQmgW8Q MIME-Version: 1.0 X-Received: by 2002:a6b:e903:: with SMTP id u3mr4000960iof.37.1544266263175; Sat, 08 Dec 2018 02:51:03 -0800 (PST) Date: Sat, 08 Dec 2018 02:51:03 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000e2b4e057c80822f@google.com> Subject: general protection fault in freeary From: syzbot To: akpm@linux-foundation.org, arnd@arndb.de, dave@stgolabs.net, ebiederm@xmission.com, linux-kernel@vger.kernel.org, linux@dominikbrodowski.net, manfred@colorfullife.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 74c4a24df7ca Add linux-next specific files for 20181207 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=11a713d5400000 kernel config: https://syzkaller.appspot.com/x/.config?x=6e9413388bf37bed dashboard link: https://syzkaller.appspot.com/bug?extid=9d8b6fa6ee7636f350c1 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e19da3400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+9d8b6fa6ee7636f350c1@syzkaller.appspotmail.com dmaengine-unmap-16 0KB 4KB dmaengine-unmap-2 0KB 3KB kasan: CONFIG_KASAN_INLINE enabled skbuff_fclone_cache 5KB 7KB kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 21755 Comm: syz-executor0 Not tainted 4.20.0-rc5-next-20181207+ #163 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d RSP: 0018:ffff8881b5ea6ec0 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffffff87dd7df8 RCX: ffffffff8341d7fe RDX: 11699ffffec411b1 RSI: ffffffff8341d556 RDI: ffffffff87dd7e00 skbuff_head_cache 539KB 1706KB RBP: ffff8881b5ea6ed8 R08: ffff8881baf76300 R09: fffff5200198e400 R10: fffff5200198e400 R11: ffffc9000cc72003 R12: 8b4cfffff6208d8b R13: 48fffff618b58b48 R14: ffff8881b5ea72c0 R15: dffffc0000000000 FS: 000000000279f940(0000) GS:ffff8881dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c031f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] unlink_queue ipc/sem.c:786 [inline] freeary+0xe72/0x1a40 ipc/sem.c:1164 configfs_dir_cache 0KB 4KB file_lock_cache 0KB 3KB file_lock_ctx 0KB 3KB fsnotify_mark_connector 43KB 55KB free_ipcs+0x9f/0x1c0 ipc/namespace.c:112 sem_exit_ns+0x20/0x40 ipc/sem.c:237 free_ipc_ns ipc/namespace.c:120 [inline] put_ipc_ns+0x66/0x180 ipc/namespace.c:152 net_namespace 52KB 52KB free_nsproxy+0xcf/0x220 kernel/nsproxy.c:180 switch_task_namespaces+0xb3/0xd0 kernel/nsproxy.c:229 exit_task_namespaces+0x17/0x20 kernel/nsproxy.c:234 do_exit+0x1a48/0x2620 kernel/exit.c:866 shmem_inode_cache 5754KB 6042KB task_delay_info 112KB 484KB taskstats 152KB 163KB proc_dir_entry 578KB 581KB do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2515 pde_opener 0KB 3KB do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 seq_file 282KB 342KB sigqueue 39KB 208KB kernfs_node_cache 11484KB 11489KB mnt_cache 5951KB 6436KB exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 filp 3938KB 6761KB entry_SYSCALL_64_after_hwframe+0x49/0xbe names_cache 99560KB 99598KB RIP: 0033:0x459f39 Code: ff 48 85 f6 0f 84 27 8a fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c fe 89 fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75 RSP: 002b:00007ffd923f9ef8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: fffffffffffffff4 RBX: 00007f99b9efc700 RCX: 0000000000459f39 RDX: 00007f99b9efc9d0 RSI: 00007f99b9efbdb0 RDI: 00000000003d0f00 iint_cache 87KB 91KB RBP: 00007ffd923fa100 R08: 00007f99b9efc700 R09: 00007f99b9efc700 R10: 00007f99b9efc9d0 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffd923f9faf R14: 00007f99b9efc9c0 R15: 0000000000000001 Modules linked in: ---[ end trace 984887003f1a69a9 ]--- RIP: 0010:__list_del_entry_valid+0x84/0x100 lib/list_debug.c:51 key_jar 3KB 7KB Code: 0f 84 60 01 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 39 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 5f 49 8b 14 24 48 39 da 0f 85 4e 01 00 00 49 8d 7d RSP: 0018:ffff8881b5ea6ec0 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffffff87dd7df8 RCX: ffffffff8341d7fe RDX: 11699ffffec411b1 RSI: ffffffff8341d556 RDI: ffffffff87dd7e00 RBP: ffff8881b5ea6ed8 R08: ffff8881baf76300 R09: fffff5200198e400 uts_namespace 2KB 7KB R10: fffff5200198e400 R11: ffffc9000cc72003 R12: 8b4cfffff6208d8b R13: 48fffff618b58b48 R14: ffff8881b5ea72c0 R15: dffffc0000000000 FS: 000000000279f940(0000) GS:ffff8881dad00000(0000) knlGS:0000000000000000 nsproxy 63KB 75KB CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000072c000 CR3: 00000001c031f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches