From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752296AbeDIF7D (ORCPT ); Mon, 9 Apr 2018 01:59:03 -0400 Received: from mail-it0-f69.google.com ([209.85.214.69]:37107 "EHLO mail-it0-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750982AbeDIF7B (ORCPT ); Mon, 9 Apr 2018 01:59:01 -0400 X-Google-Smtp-Source: AIpwx48xCOtziaaQrSEDrev3eJrbvgHAQAnAEhq4tmkpuVh3tuwiRw/h9rqEB8F9RYssB+Cy5RXmqs9fRDGavkZCVD8gzlPsFPzJ MIME-Version: 1.0 Date: Sun, 08 Apr 2018 22:59:01 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <001a113f2be038459c0569641a72@google.com> Subject: WARNING in ip_rt_bug From: syzbot To: davem@davemloft.net, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org 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 net-next commit 8bde261e535257e81087d39ff808414e2f5aa39d (Sun Apr 1 02:31:43 2018 +0000) Merge tag 'mlx5-updates-2018-03-30' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=b09ac67a2af842b12eab Unfortunately, I don't have any reproducer for this crash yet. Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5991727739437056 Kernel config: https://syzkaller.appspot.com/x/.config?id=3327544840960562528 compiler: gcc (GCC) 7.1.1 20170620 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+b09ac67a2af842b12eab@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. netlink: 'syz-executor6': attribute type 3 has an invalid length. WARNING: CPU: 0 PID: 11678 at net/ipv4/route.c:1213 ip_rt_bug+0x15/0x20 net/ipv4/route.c:1212 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 11678 Comm: kworker/u4:7 Not tainted 4.16.0-rc6+ #289 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 panic+0x1e4/0x41c kernel/panic.c:183 __warn+0x1dc/0x200 kernel/panic.c:547 report_bug+0x1f4/0x2b0 lib/bug.c:186 fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178 fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986 RIP: 0010:ip_rt_bug+0x15/0x20 net/ipv4/route.c:1212 RSP: 0018:ffff8801db007290 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: ffff8801d8dda3c0 RCX: ffffffff856c31ca RDX: 0000000000000100 RSI: ffffffff8858c300 RDI: 0000000000000282 RBP: ffff8801db007298 R08: 1ffff1003b600de1 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d8dda3c0 R13: ffff88019bdb2200 R14: ffff88019bdeed80 R15: ffff8801d8dda418 dst_output include/net/dst.h:444 [inline] ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124 ip_send_skb+0x3c/0xc0 net/ipv4/ip_output.c:1414 ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1434 icmp_push_reply+0x395/0x4f0 net/ipv4/icmp.c:394 icmp_send+0x1136/0x19b0 net/ipv4/icmp.c:741 ipv4_link_failure+0x2a/0x1b0 net/ipv4/route.c:1200 dst_link_failure include/net/dst.h:427 [inline] arp_error_report+0xae/0x180 net/ipv4/arp.c:297 neigh_invalidate+0x225/0x530 net/core/neighbour.c:883 neigh_timer_handler+0x897/0xd60 net/core/neighbour.c:969 call_timer_fn+0x228/0x820 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers+0x7ee/0xb70 kernel/time/timer.c:1666 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692 __do_softirq+0x2d7/0xb85 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x1cc/0x200 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:541 [inline] smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:lock_acquire+0x256/0x580 kernel/locking/lockdep.c:3923 RSP: 0018:ffff880197b3f980 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff12 RAX: dffffc0000000000 RBX: ffff8801d225e400 RCX: 0000000000000000 RDX: 1ffffffff10a24e5 RSI: 00000000b98b8227 RDI: 0000000000000282 RBP: ffff880197b3fa78 R08: 1ffff10032f67e93 R09: 0000000000000004 R10: ffff880197b3f960 R11: 0000000000000003 R12: 1ffff10032f67f36 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 down_write_killable+0x8a/0x140 kernel/locking/rwsem.c:84 __bprm_mm_init fs/exec.c:297 [inline] bprm_mm_init fs/exec.c:414 [inline] do_execveat_common.isra.30+0xc8e/0x23c0 fs/exec.c:1771 do_execve+0x31/0x40 fs/exec.c:1847 call_usermodehelper_exec_async+0x457/0x8f0 kernel/umh.c:100 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a dumb bot. 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