From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754176AbeDBGBj (ORCPT ); Mon, 2 Apr 2018 02:01:39 -0400 Received: from mail-io0-f199.google.com ([209.85.223.199]:46861 "EHLO mail-io0-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751696AbeDBGBE (ORCPT ); Mon, 2 Apr 2018 02:01:04 -0400 X-Google-Smtp-Source: AIpwx4+I9UWg+VI2DrcgXgxqUJDbn8Imk1fxGuR9s0nqcO009NaeIwpFiNXpDwAeByYb34chGr75loO8z+JTHhGqKoLlgEDAz8wG MIME-Version: 1.0 Date: Sun, 01 Apr 2018 23:01:03 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a7c16a0568d750ce@google.com> Subject: general protection fault in tipc_nametbl_unsubscribe From: syzbot To: davem@davemloft.net, jon.maloy@ericsson.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, tipc-discussion@lists.sourceforge.net, ying.xue@windriver.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot hit the following crash on upstream commit 10b84daddbec72c6b440216a69de9a9605127f7a (Sat Mar 31 17:59:00 2018 +0000) Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=4859fe19555ea87c42f3 So far this crash happened 3 times on upstream. C reproducer: https://syzkaller.appspot.com/x/repro.c?id=4775372465897472 syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=4868734988582912 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5073802094444544 Kernel config: https://syzkaller.appspot.com/x/.config?id=-2760467897697295172 compiler: gcc (GCC) 7.1.1 20170620 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4859fe19555ea87c42f3@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer. R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 Name sequence creation failed, no memory Failed to create subscription for {24576,0,4294967295} kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 4447 Comm: syzkaller851181 Not tainted 4.16.0-rc7+ #374 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: 0018:ffff8801ae1aef48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801cf54c760 RDI: ffff8801cf54c768 RBP: ffff8801ae1aef60 R08: 1ffff10035c35cff R09: ffffffff89956150 R10: ffff8801ae1aee28 R11: 000000000000168a R12: ffffffff87745ea0 R13: ffff8801ae1af100 R14: ffff8801cf54c760 R15: ffff8801cf4c8cc0 FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055dce15c3090 CR3: 000000000846a002 CR4: 00000000001606e0 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_init include/linux/list.h:159 [inline] tipc_nametbl_unsubscribe+0x318/0x990 net/tipc/name_table.c:848 tipc_subscrb_subscrp_delete+0x1e9/0x460 net/tipc/subscr.c:212 tipc_subscrb_delete net/tipc/subscr.c:242 [inline] tipc_subscrb_release_cb+0x17/0x30 net/tipc/subscr.c:321 tipc_topsrv_kern_unsubscr+0x2c3/0x430 net/tipc/server.c:535 tipc_group_delete+0x2c0/0x3d0 net/tipc/group.c:231 tipc_sk_leave+0x10b/0x200 net/tipc/socket.c:2795 tipc_release+0x154/0xff0 net/tipc/socket.c:577 sock_release+0x8d/0x1e0 net/socket.c:595 sock_close+0x16/0x20 net/socket.c:1149 __fput+0x327/0x7e0 fs/file_table.c:209 ____fput+0x15/0x20 fs/file_table.c:243 task_work_run+0x199/0x270 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9bb/0x1ad0 kernel/exit.c:865 do_group_exit+0x149/0x400 kernel/exit.c:968 SYSC_exit_group kernel/exit.c:979 [inline] SyS_exit_group+0x1d/0x20 kernel/exit.c:977 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x43f228 RSP: 002b:00007ffde31217e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f228 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf308 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 00000000204ee000 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 RIP: __list_del_entry_valid+0x7e/0x150 lib/list_debug.c:51 RSP: ffff8801ae1aef48 ---[ end trace ba18c1598e2d5535 ]--- --- This bug is generated by a dumb bot. 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