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Mon, 24 Feb 2020 14:38:42 -0800 (PST) MIME-Version: 1.0 References: <0000000000003cbb40059f4e0346@google.com> In-Reply-To: <0000000000003cbb40059f4e0346@google.com> From: Paul Moore Date: Mon, 24 Feb 2020 17:38:31 -0500 Message-ID: Subject: Re: kernel panic: audit: backlog limit exceeded To: syzbot Cc: a@unstable.cc, b.a.t.m.a.n@lists.open-mesh.org, dan.carpenter@oracle.com, davem@davemloft.net, Eric Paris , fzago@cray.com, gregkh@linuxfoundation.org, john.hammond@intel.com, linux-audit@redhat.com, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Feb 24, 2020 at 3:18 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 36a44bcd Merge branch 'bnxt_en-shutdown-and-kexec-kdump-re.. > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=148bfdd9e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=768cc3d3e277cc16 > dashboard link: https://syzkaller.appspot.com/bug?extid=9a5e789e4725b9ef1316 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151b1109e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=128bfdd9e00000 > > The bug was bisected to: > > commit 0c1b9970ddd4cc41002321c3877e7f91aacb896d > Author: Dan Carpenter > Date: Fri Jul 28 14:42:27 2017 +0000 > > staging: lustre: lustre: Off by two in lmv_fid2path() > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17e6c3e9e00000 > final crash: https://syzkaller.appspot.com/x/report.txt?x=1416c3e9e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=1016c3e9e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+9a5e789e4725b9ef1316@syzkaller.appspotmail.com > Fixes: 0c1b9970ddd4 ("staging: lustre: lustre: Off by two in lmv_fid2path()") > > audit: audit_backlog=13 > audit_backlog_limit=7 > audit: audit_lost=1 audit_rate_limit=0 audit_backlog_limit=7 > Kernel panic - not syncing: audit: backlog limit exceeded > CPU: 1 PID: 9913 Comm: syz-executor024 Not tainted 5.6.0-rc1-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x197/0x210 lib/dump_stack.c:118 > panic+0x2e3/0x75c kernel/panic.c:221 > audit_panic.cold+0x32/0x32 kernel/audit.c:307 > audit_log_lost kernel/audit.c:377 [inline] > audit_log_lost+0x8b/0x180 kernel/audit.c:349 > audit_log_start kernel/audit.c:1788 [inline] > audit_log_start+0x70e/0x7c0 kernel/audit.c:1745 > audit_log+0x95/0x120 kernel/audit.c:2345 > xt_replace_table+0x61d/0x830 net/netfilter/x_tables.c:1413 > __do_replace+0x1da/0x950 net/ipv6/netfilter/ip6_tables.c:1084 > do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline] > do_ip6t_set_ctl+0x33a/0x4c8 net/ipv6/netfilter/ip6_tables.c:1681 > nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] > nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115 > ipv6_setsockopt net/ipv6/ipv6_sockglue.c:949 [inline] > ipv6_setsockopt+0x147/0x180 net/ipv6/ipv6_sockglue.c:933 > tcp_setsockopt net/ipv4/tcp.c:3165 [inline] > tcp_setsockopt+0x8f/0xe0 net/ipv4/tcp.c:3159 > sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149 > __sys_setsockopt+0x261/0x4c0 net/socket.c:2130 > __do_sys_setsockopt net/socket.c:2146 [inline] > __se_sys_setsockopt net/socket.c:2143 [inline] > __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143 > do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x44720a > Code: 49 89 ca b8 37 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1a e0 fb ff c3 66 0f 1f 84 00 00 00 00 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fa df fb ff c3 66 0f 1f 84 00 00 00 00 00 > RSP: 002b:00007ffd032dec78 EFLAGS: 00000286 ORIG_RAX: 0000000000000036 > RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044720a > RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 > RBP: 00007ffd032deda0 R08: 00000000000003b8 R09: 0000000000004000 > R10: 00000000006d7b40 R11: 0000000000000286 R12: 00007ffd032deca0 > R13: 00000000006d9d60 R14: 0000000000000029 R15: 00000000006d7ba0 > Kernel Offset: disabled > Rebooting in 86400 seconds.. > > > --- > 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#status for how to communicate with syzbot. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches Similar to syzbot report 72461ac44b36c98f58e5, see my comments there. -- paul moore www.paul-moore.com 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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 11A1FC38BF9 for ; Mon, 24 Feb 2020 22:39:04 +0000 (UTC) Received: from us-smtp-delivery-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B34EB20CC7 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Message-ID: <20200224223831.vF7wUVfEtqeV-xx5uo9DhjO8oXk0cr4_wWyr7j0ICfQ@z> On Mon, Feb 24, 2020 at 3:18 AM syzbot wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 36a44bcd Merge branch 'bnxt_en-shutdown-and-kexec-kdump-re.. > git tree: net > console output: https://syzkaller.appspot.com/x/log.txt?x=148bfdd9e00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=768cc3d3e277cc16 > dashboard link: https://syzkaller.appspot.com/bug?extid=9a5e789e4725b9ef1316 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151b1109e00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=128bfdd9e00000 > > The bug was bisected to: > > commit 0c1b9970ddd4cc41002321c3877e7f91aacb896d > Author: Dan Carpenter > Date: Fri Jul 28 14:42:27 2017 +0000 > > staging: lustre: lustre: Off by two in lmv_fid2path() > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17e6c3e9e00000 > final crash: https://syzkaller.appspot.com/x/report.txt?x=1416c3e9e00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=1016c3e9e00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+9a5e789e4725b9ef1316@syzkaller.appspotmail.com > Fixes: 0c1b9970ddd4 ("staging: lustre: lustre: Off by two in lmv_fid2path()") > > audit: audit_backlog=13 > audit_backlog_limit=7 > audit: audit_lost=1 audit_rate_limit=0 audit_backlog_limit=7 > Kernel panic - not syncing: audit: backlog limit exceeded > CPU: 1 PID: 9913 Comm: syz-executor024 Not tainted 5.6.0-rc1-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 > Call Trace: > __dump_stack lib/dump_stack.c:77 [inline] > dump_stack+0x197/0x210 lib/dump_stack.c:118 > panic+0x2e3/0x75c kernel/panic.c:221 > audit_panic.cold+0x32/0x32 kernel/audit.c:307 > audit_log_lost kernel/audit.c:377 [inline] > audit_log_lost+0x8b/0x180 kernel/audit.c:349 > audit_log_start kernel/audit.c:1788 [inline] > audit_log_start+0x70e/0x7c0 kernel/audit.c:1745 > audit_log+0x95/0x120 kernel/audit.c:2345 > xt_replace_table+0x61d/0x830 net/netfilter/x_tables.c:1413 > __do_replace+0x1da/0x950 net/ipv6/netfilter/ip6_tables.c:1084 > do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline] > do_ip6t_set_ctl+0x33a/0x4c8 net/ipv6/netfilter/ip6_tables.c:1681 > nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] > nf_setsockopt+0x77/0xd0 net/netfilter/nf_sockopt.c:115 > ipv6_setsockopt net/ipv6/ipv6_sockglue.c:949 [inline] > ipv6_setsockopt+0x147/0x180 net/ipv6/ipv6_sockglue.c:933 > tcp_setsockopt net/ipv4/tcp.c:3165 [inline] > tcp_setsockopt+0x8f/0xe0 net/ipv4/tcp.c:3159 > sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3149 > __sys_setsockopt+0x261/0x4c0 net/socket.c:2130 > __do_sys_setsockopt net/socket.c:2146 [inline] > __se_sys_setsockopt net/socket.c:2143 [inline] > __x64_sys_setsockopt+0xbe/0x150 net/socket.c:2143 > do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x44720a > Code: 49 89 ca b8 37 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1a e0 fb ff c3 66 0f 1f 84 00 00 00 00 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 fa df fb ff c3 66 0f 1f 84 00 00 00 00 00 > RSP: 002b:00007ffd032dec78 EFLAGS: 00000286 ORIG_RAX: 0000000000000036 > RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000044720a > RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 > RBP: 00007ffd032deda0 R08: 00000000000003b8 R09: 0000000000004000 > R10: 00000000006d7b40 R11: 0000000000000286 R12: 00007ffd032deca0 > R13: 00000000006d9d60 R14: 0000000000000029 R15: 00000000006d7ba0 > Kernel Offset: disabled > Rebooting in 86400 seconds.. > > > --- > 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#status for how to communicate with syzbot. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > syzbot can test patches for this bug, for details see: > https://goo.gl/tpsmEJ#testing-patches Similar to syzbot report 72461ac44b36c98f58e5, see my comments there. -- paul moore www.paul-moore.com -- Linux-audit mailing list Linux-audit@redhat.com https://www.redhat.com/mailman/listinfo/linux-audit