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[146.241.103.235]) by smtp.gmail.com with ESMTPSA id w19-20020ac87e93000000b00399b73d06f0sm9362207qtj.38.2022.10.13.01.02.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Oct 2022 01:02:17 -0700 (PDT) Message-ID: <5ff75959614e10c102c90ae3af744209f4d30a5f.camel@redhat.com> Subject: Re: [syzbot] WARNING in ovs_dp_cmd_new (2) From: Paolo Abeni To: syzbot , davem@davemloft.net, dev@openvswitch.org, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pshelar@ovn.org, syzkaller-bugs@googlegroups.com Date: Thu, 13 Oct 2022 10:02:13 +0200 In-Reply-To: <0000000000008bdd0305ead9cb9f@google.com> References: <0000000000008bdd0305ead9cb9f@google.com> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.4 (3.42.4-2.fc35) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, 2022-10-12 at 10:33 -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: e8bc52cb8df8 Merge tag 'driver-core-6.1-rc1' of git://git... > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=1112f08a880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=1b85abe77fd80fd6 > dashboard link: https://syzkaller.appspot.com/bug?extid=6c1a3b18294de0f138d8 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1112607c880000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=144b0ca4880000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/40287b1866de/disk-e8bc52cb.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/1ef7d0e94dfc/vmlinux-e8bc52cb.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+6c1a3b18294de0f138d8@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > Dropping previously announced user features > WARNING: CPU: 1 PID: 3616 at net/openvswitch/datapath.c:1619 ovs_dp_reset_user_features net/openvswitch/datapath.c:1619 [inline] > WARNING: CPU: 1 PID: 3616 at net/openvswitch/datapath.c:1619 ovs_dp_cmd_new+0xdf5/0x1300 net/openvswitch/datapath.c:1822 > Modules linked in: > CPU: 1 PID: 3616 Comm: syz-executor259 Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 > RIP: 0010:ovs_dp_reset_user_features net/openvswitch/datapath.c:1619 [inline] > RIP: 0010:ovs_dp_cmd_new+0xdf5/0x1300 net/openvswitch/datapath.c:1822 > Code: 2a 0f b6 04 02 84 c0 74 04 3c 03 7e 21 c7 43 68 00 00 00 00 e9 30 fe ff ff e8 b7 fe 53 f8 48 c7 c7 00 13 21 8b e8 c7 a5 16 00 <0f> 0b eb be 4c 89 e7 e8 9f 14 a1 f8 eb d5 e8 38 14 a1 f8 e9 3f ff > RSP: 0018:ffffc90003f0f4e8 EFLAGS: 00010282 > RAX: 0000000000000000 RBX: ffff8880126fa000 RCX: 0000000000000000 > RDX: ffff88801e751d80 RSI: ffffffff8160f738 RDI: fffff520007e1e8f > RBP: ffff888016a0ae00 R08: 0000000000000005 R09: 0000000000000000 > R10: 0000000080000000 R11: 676e6970706f7244 R12: ffff8880126fa068 > R13: 0000000000000008 R14: ffff888016a0ae58 R15: ffff8880266cd880 > FS: 000055555626b300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000020000916 CR3: 00000000265ee000 CR4: 00000000003506e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731 > genl_family_rcv_msg net/netlink/genetlink.c:808 [inline] > genl_rcv_msg+0x441/0x780 net/netlink/genetlink.c:825 > netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540 > genl_rcv+0x24/0x40 net/netlink/genetlink.c:836 > netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] > netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 > netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 > sock_sendmsg_nosec net/socket.c:714 [inline] > sock_sendmsg+0xcf/0x120 net/socket.c:734 > ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 > ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 > __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7f9aa25fce89 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007fff35f65558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 00000000000095e8 RCX: 00007f9aa25fce89 > RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 > RBP: 0000000000000000 R08: 00007fff35f656f8 R09: 00007fff35f656f8 > R10: 00007fff35f64fd0 R11: 0000000000000246 R12: 00007fff35f6556c > R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 > > > > --- > 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. > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches #syz dup: WARNING in ovs_dp_reset_user_features