[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 40.505864][ T26] audit: type=1800 audit(1555532405.877:25): pid=7798 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 40.533617][ T26] audit: type=1800 audit(1555532405.877:26): pid=7798 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.555387][ T26] audit: type=1800 audit(1555532405.887:27): pid=7798 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 '10.128.0.178' (ECDSA) to the list of known hosts. syzkaller login: [ 74.510865][ T7950] IPVS: ftp: loaded support on port[0] = 21 [ 74.564389][ T7950] chnl_net:caif_netlink_parms(): no params data found [ 74.598237][ T7950] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.608040][ T7950] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.617403][ T7950] device bridge_slave_0 entered promiscuous mode [ 74.625965][ T7950] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.633887][ T7950] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.644954][ T7950] device bridge_slave_1 entered promiscuous mode [ 74.663627][ T7950] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 74.675198][ T7950] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 74.695893][ T7950] team0: Port device team_slave_0 added [ 74.704203][ T7950] team0: Port device team_slave_1 added [ 74.761943][ T7950] device hsr_slave_0 entered promiscuous mode [ 74.829605][ T7950] device hsr_slave_1 entered promiscuous mode [ 74.896583][ T7950] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.904903][ T7950] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.913508][ T7950] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.921961][ T7950] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.953191][ T7950] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.967575][ T2988] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.991419][ T2988] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.001972][ T2988] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.012292][ T2988] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.026056][ T7950] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.036958][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.047851][ T3480] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.055029][ T3480] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.070194][ T2988] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.078564][ T2988] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.086188][ T2988] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.100133][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.116098][ T7950] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.128095][ T7950] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.142373][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.154843][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.166978][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.176302][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.185051][ T3480] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 75.206005][ T7950] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.221527][ T7950] ------------[ cut here ]------------ [ 75.227552][ T7950] hsr_addr_subst_dest: Unknown node [ 75.233363][ T7950] WARNING: CPU: 1 PID: 7950 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest+0x382/0x460 [ 75.243636][ T7950] Kernel panic - not syncing: panic_on_warn set ... [ 75.250336][ T7950] CPU: 1 PID: 7950 Comm: syz-executor812 Not tainted 5.1.0-rc5+ #73 [ 75.259718][ T7950] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.270315][ T7950] Call Trace: [ 75.273618][ T7950] dump_stack+0x172/0x1f0 [ 75.280795][ T7950] ? hsr_addr_subst_dest+0x320/0x460 [ 75.286202][ T7950] panic+0x2cb/0x65c [ 75.290347][ T7950] ? __warn_printk+0xf3/0xf3 [ 75.294928][ T7950] ? hsr_addr_subst_dest+0x382/0x460 [ 75.300504][ T7950] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.306735][ T7950] ? __warn.cold+0x5/0x45 [ 75.311263][ T7950] ? __warn+0xe8/0x1d0 [ 75.315334][ T7950] ? hsr_addr_subst_dest+0x382/0x460 [ 75.321590][ T7950] __warn.cold+0x20/0x45 [ 75.325858][ T7950] ? vprintk_emit+0x1ce/0x6d0 [ 75.330640][ T7950] ? hsr_addr_subst_dest+0x382/0x460 [ 75.336190][ T7950] report_bug+0x263/0x2b0 [ 75.340543][ T7950] do_error_trap+0x11b/0x200 [ 75.345595][ T7950] do_invalid_op+0x37/0x50 [ 75.350210][ T7950] ? hsr_addr_subst_dest+0x382/0x460 [ 75.356522][ T7950] invalid_op+0x14/0x20 [ 75.360711][ T7950] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 75.367556][ T7950] Code: 89 de e8 b1 80 6a fa 84 db 75 d3 e8 68 7f 6a fa 48 c7 c6 e0 4d 19 88 48 c7 c7 a0 4d 19 88 c6 05 93 7a 54 02 01 e8 4c 2d 3d fa <0f> 0b eb b0 e8 45 7f 6a fa 0f b6 1d 7f 7a 54 02 31 ff 89 de e8 75 [ 75.387941][ T7950] RSP: 0018:ffff88808e4cf5f0 EFLAGS: 00010282 [ 75.394026][ T7950] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.402260][ T7950] RDX: 0000000000000000 RSI: ffffffff815afcb6 RDI: ffffed1011c99eb0 [ 75.411018][ T7950] RBP: ffff88808e4cf630 R08: ffff88808d38c200 R09: ffff88808d38caa0 [ 75.420136][ T7950] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888091342b20 [ 75.428137][ T7950] R13: 00000000aaaaaaaa R14: 0000000093a9efde R15: 000000000000aaaa [ 75.438983][ T7950] ? vprintk_func+0x86/0x189 [ 75.444026][ T7950] hsr_forward_skb+0x123c/0x1bd0 [ 75.450319][ T7950] hsr_dev_xmit+0x72/0xa0 [ 75.454695][ T7950] dev_hard_start_xmit+0x1b2/0x980 [ 75.460131][ T7950] __dev_queue_xmit+0x271d/0x3060 [ 75.465248][ T7950] ? __might_fault+0x12b/0x1e0 [ 75.470040][ T7950] ? find_held_lock+0x35/0x130 [ 75.474807][ T7950] ? netdev_pick_tx+0x300/0x300 [ 75.481334][ T7950] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 75.488456][ T7950] ? iov_iter_advance+0x295/0xf70 [ 75.495299][ T7950] dev_queue_xmit+0x18/0x20 [ 75.499917][ T7950] ? dev_queue_xmit+0x18/0x20 [ 75.504729][ T7950] pppoe_sendmsg+0x657/0x7e0 [ 75.509434][ T7950] ? ether_setup+0x2d0/0x2d0 [ 75.514133][ T7950] ? pppoe_getname+0x120/0x120 [ 75.519272][ T7950] ? apparmor_socket_sendmsg+0x2a/0x30 [ 75.524921][ T7950] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.531188][ T7950] ? security_socket_sendmsg+0x93/0xc0 [ 75.536667][ T7950] ? pppoe_getname+0x120/0x120 [ 75.541461][ T7950] sock_sendmsg+0xdd/0x130 [ 75.545980][ T7950] ___sys_sendmsg+0x3e2/0x930 [ 75.551460][ T7950] ? copy_msghdr_from_user+0x430/0x430 [ 75.556934][ T7950] ? __lock_acquire+0x548/0x3fb0 [ 75.561959][ T7950] ? mark_held_locks+0xf0/0xf0 [ 75.569087][ T7950] ? kasan_check_read+0x11/0x20 [ 75.575627][ T7950] ? __lock_acquire+0x242a/0x3fb0 [ 75.581568][ T7950] ? __might_fault+0x12b/0x1e0 [ 75.589053][ T7950] ? find_held_lock+0x35/0x130 [ 75.594727][ T7950] ? __might_fault+0x12b/0x1e0 [ 75.603531][ T7950] ? lock_downgrade+0x880/0x880 [ 75.608477][ T7950] ? ___might_sleep+0x163/0x280 [ 75.613338][ T7950] __sys_sendmmsg+0x1bf/0x4d0 [ 75.618644][ T7950] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 75.625090][ T7950] ? __sys_connect+0x12d/0x330 [ 75.630132][ T7950] ? __ia32_sys_accept+0xb0/0xb0 [ 75.635361][ T7950] ? kasan_check_write+0x14/0x20 [ 75.641818][ T7950] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.647464][ T7950] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.653356][ T7950] ? do_syscall_64+0x26/0x610 [ 75.658034][ T7950] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.664966][ T7950] ? do_syscall_64+0x26/0x610 [ 75.671571][ T7950] __x64_sys_sendmmsg+0x9d/0x100 [ 75.678351][ T7950] do_syscall_64+0x103/0x610 [ 75.683483][ T7950] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.689811][ T7950] RIP: 0033:0x441929 [ 75.693799][ T7950] 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 [ 75.715520][ T7950] RSP: 002b:00007ffdef9055b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 75.724020][ T7950] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929 [ 75.731984][ T7950] RDX: 04000000000000eb RSI: 000000002000d180 RDI: 0000000000000003 [ 75.741117][ T7950] RBP: 00000000004a8fd0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 75.751374][ T7950] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402e70 [ 75.759531][ T7950] R13: 0000000000402f00 R14: 0000000000000000 R15: 0000000000000000 [ 75.768885][ T7950] Kernel Offset: disabled [ 75.773319][ T7950] Rebooting in 86400 seconds..