[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.017982][ T27] audit: type=1800 audit(1555433244.673:25): pid=7644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.047862][ T27] audit: type=1800 audit(1555433244.673:26): pid=7644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.084866][ T27] audit: type=1800 audit(1555433244.673:27): pid=7644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts. syzkaller login: [ 55.412056][ T7797] IPVS: ftp: loaded support on port[0] = 21 [ 55.462146][ T7797] chnl_net:caif_netlink_parms(): no params data found [ 55.492049][ T7797] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.500351][ T7797] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.509374][ T7797] device bridge_slave_0 entered promiscuous mode [ 55.518447][ T7797] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.526112][ T7797] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.535508][ T7797] device bridge_slave_1 entered promiscuous mode [ 55.551985][ T7797] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.564021][ T7797] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.581757][ T7797] team0: Port device team_slave_0 added [ 55.589630][ T7797] team0: Port device team_slave_1 added [ 55.671711][ T7797] device hsr_slave_0 entered promiscuous mode [ 55.740445][ T7797] device hsr_slave_1 entered promiscuous mode [ 55.788732][ T7797] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.796774][ T7797] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.805561][ T7797] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.812723][ T7797] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.844520][ T7797] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.859201][ T3189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.870829][ T3189] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.890828][ T3189] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.901420][ T3189] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 55.915828][ T7797] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.937458][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.946537][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.953742][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.977851][ T7797] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 55.990566][ T7797] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 56.004710][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.014900][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.023191][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.032546][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.042197][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.051757][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.062131][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.071975][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.080825][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready executing program [ 56.099875][ T7797] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 56.114770][ T7797] ------------[ cut here ]------------ [ 56.121485][ T7797] hsr_addr_subst_dest: Unknown node [ 56.127564][ T7797] WARNING: CPU: 0 PID: 7797 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest+0x382/0x460 [ 56.138631][ T7797] Kernel panic - not syncing: panic_on_warn set ... [ 56.145367][ T7797] CPU: 0 PID: 7797 Comm: syz-executor710 Not tainted 5.1.0-rc5+ #70 [ 56.155213][ T7797] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.166687][ T7797] Call Trace: [ 56.170061][ T7797] dump_stack+0x172/0x1f0 [ 56.174607][ T7797] ? hsr_addr_subst_dest+0x380/0x460 [ 56.180250][ T7797] panic+0x2cb/0x65c [ 56.184891][ T7797] ? __warn_printk+0xf3/0xf3 [ 56.189609][ T7797] ? hsr_addr_subst_dest+0x382/0x460 [ 56.196488][ T7797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.203615][ T7797] ? __warn.cold+0x5/0x45 [ 56.208335][ T7797] ? __warn+0xe8/0x1d0 [ 56.212456][ T7797] ? hsr_addr_subst_dest+0x382/0x460 [ 56.218871][ T7797] __warn.cold+0x20/0x45 [ 56.223887][ T7797] ? vprintk_emit+0x1ce/0x6d0 [ 56.229732][ T7797] ? hsr_addr_subst_dest+0x382/0x460 [ 56.235111][ T7797] report_bug+0x263/0x2b0 [ 56.239839][ T7797] do_error_trap+0x11b/0x200 [ 56.244751][ T7797] do_invalid_op+0x37/0x50 [ 56.249391][ T7797] ? hsr_addr_subst_dest+0x382/0x460 [ 56.254779][ T7797] invalid_op+0x14/0x20 [ 56.259147][ T7797] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 56.265054][ T7797] Code: 89 de e8 11 a9 6a fa 84 db 75 d3 e8 c8 a7 6a fa 48 c7 c6 c0 4e 19 88 48 c7 c7 80 4e 19 88 c6 05 32 a2 54 02 01 e8 ac 55 3d fa <0f> 0b eb b0 e8 a5 a7 6a fa 0f b6 1d 1e a2 54 02 31 ff 89 de e8 d5 [ 56.286107][ T7797] RSP: 0018:ffff8880a85375f0 EFLAGS: 00010282 [ 56.292361][ T7797] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 56.300977][ T7797] RDX: 0000000000000000 RSI: ffffffff815afcb6 RDI: ffffed10150a6eb0 [ 56.309736][ T7797] RBP: ffff8880a8537630 R08: ffff8880902400c0 R09: ffffed1015d03ef1 [ 56.318517][ T7797] R10: ffffed1015d03ef0 R11: ffff8880ae81f787 R12: ffff8880a9212be0 [ 56.327262][ T7797] R13: 0000000000000000 R14: 00000000642ffb5f R15: 0000000000000000 [ 56.336264][ T7797] ? vprintk_func+0x86/0x189 [ 56.341199][ T7797] hsr_forward_skb+0x123c/0x1bd0 [ 56.346480][ T7797] hsr_dev_xmit+0x72/0xa0 [ 56.351371][ T7797] dev_hard_start_xmit+0x1b2/0x980 [ 56.358295][ T7797] __dev_queue_xmit+0x271d/0x3060 [ 56.363931][ T7797] ? __might_fault+0x12b/0x1e0 [ 56.368715][ T7797] ? find_held_lock+0x35/0x130 [ 56.374233][ T7797] ? netdev_pick_tx+0x300/0x300 [ 56.379659][ T7797] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 56.386814][ T7797] ? iov_iter_advance+0x295/0xf70 [ 56.392803][ T7797] dev_queue_xmit+0x18/0x20 [ 56.397767][ T7797] ? dev_queue_xmit+0x18/0x20 [ 56.402907][ T7797] pppoe_sendmsg+0x657/0x7e0 [ 56.407749][ T7797] ? ether_setup+0x2d0/0x2d0 [ 56.412970][ T7797] ? pppoe_getname+0x120/0x120 [ 56.418473][ T7797] ? apparmor_socket_sendmsg+0x2a/0x30 [ 56.431509][ T7797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.439670][ T7797] ? security_socket_sendmsg+0x93/0xc0 [ 56.445823][ T7797] ? pppoe_getname+0x120/0x120 [ 56.451174][ T7797] sock_sendmsg+0xdd/0x130 [ 56.455955][ T7797] ___sys_sendmsg+0x3e2/0x930 [ 56.460812][ T7797] ? copy_msghdr_from_user+0x430/0x430 [ 56.466770][ T7797] ? __lock_acquire+0x548/0x3fb0 [ 56.471857][ T7797] ? mark_held_locks+0xf0/0xf0 [ 56.477035][ T7797] ? kasan_check_read+0x11/0x20 [ 56.482178][ T7797] ? __lock_acquire+0x242a/0x3fb0 [ 56.487509][ T7797] ? __might_fault+0x12b/0x1e0 [ 56.492447][ T7797] ? find_held_lock+0x35/0x130 [ 56.497591][ T7797] ? __might_fault+0x12b/0x1e0 [ 56.502668][ T7797] ? lock_downgrade+0x880/0x880 [ 56.509184][ T7797] ? ___might_sleep+0x163/0x280 [ 56.514414][ T7797] __sys_sendmmsg+0x1bf/0x4d0 [ 56.519606][ T7797] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 56.524959][ T7797] ? __sys_connect+0x12d/0x330 [ 56.531261][ T7797] ? __ia32_sys_accept+0xb0/0xb0 [ 56.537331][ T7797] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.543441][ T7797] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 56.549444][ T7797] ? do_syscall_64+0x26/0x610 [ 56.555170][ T7797] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.563261][ T7797] ? do_syscall_64+0x26/0x610 [ 56.568268][ T7797] __x64_sys_sendmmsg+0x9d/0x100 [ 56.573781][ T7797] do_syscall_64+0x103/0x610 [ 56.579071][ T7797] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 56.585562][ T7797] RIP: 0033:0x441929 [ 56.590246][ T7797] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 56.613599][ T7797] RSP: 002b:00007ffc0e82df58 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 56.622951][ T7797] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929 [ 56.631660][ T7797] RDX: 0400000000000191 RSI: 000000002000d180 RDI: 0000000000000003 [ 56.641057][ T7797] RBP: 00000000004a8fd0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 56.649394][ T7797] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402e70 [ 56.658469][ T7797] R13: 0000000000402f00 R14: 0000000000000000 R15: 0000000000000000 [ 56.669929][ T7797] Kernel Offset: disabled [ 56.674725][ T7797] Rebooting in 86400 seconds..