[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.285080][ T26] audit: type=1800 audit(1571693489.278:25): pid=8590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.335110][ T26] audit: type=1800 audit(1571693489.278:26): pid=8590 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.366518][ T26] audit: type=1800 audit(1571693489.288:27): pid=8590 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 '10.128.1.41' (ECDSA) to the list of known hosts. syzkaller login: [ 75.189536][ T8744] IPVS: ftp: loaded support on port[0] = 21 [ 75.268187][ T8744] chnl_net:caif_netlink_parms(): no params data found [ 75.300506][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.308634][ T8744] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.316734][ T8744] device bridge_slave_0 entered promiscuous mode [ 75.325388][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.332536][ T8744] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.340725][ T8744] device bridge_slave_1 entered promiscuous mode [ 75.359582][ T8744] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.370417][ T8744] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.390331][ T8744] team0: Port device team_slave_0 added [ 75.397822][ T8744] team0: Port device team_slave_1 added [ 75.458217][ T8744] device hsr_slave_0 entered promiscuous mode [ 75.525101][ T8744] device hsr_slave_1 entered promiscuous mode [ 75.583300][ T8744] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.590580][ T8744] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.598668][ T8744] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.605943][ T8744] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.642705][ T8744] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.657265][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.678331][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.688049][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.697219][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.709261][ T8744] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.720434][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.730114][ T2413] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.737281][ T2413] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.755885][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.764381][ T2413] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.771782][ T2413] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.783459][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.793392][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.810568][ T8744] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.821488][ T8744] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.837062][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.845711][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.855708][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.865177][ T2413] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 75.888183][ T8744] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.954867][ C1] protocol 88fb is buggy, dev hsr_slave_0 [ 75.960818][ C1] protocol 88fb is buggy, dev hsr_slave_1 executing program [ 76.074567][ C1] protocol 88fb is buggy, dev hsr_slave_0 [ 76.080354][ C1] protocol 88fb is buggy, dev hsr_slave_1 executing program [ 76.194600][ C1] protocol 88fb is buggy, dev hsr_slave_0 [ 76.200750][ C1] protocol 88fb is buggy, dev hsr_slave_1 executing program [ 76.324593][ C1] protocol 88fb is buggy, dev hsr_slave_0 [ 76.330379][ C1] protocol 88fb is buggy, dev hsr_slave_1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 77.814904][ T8769] ------------[ cut here ]------------ [ 77.820650][ T8769] hsr_addr_subst_dest: Unknown node [ 77.826396][ T8769] WARNING: CPU: 1 PID: 8769 at net/hsr/hsr_framereg.c:303 hsr_addr_subst_dest+0x382/0x460 [ 77.836286][ T8769] Kernel panic - not syncing: panic_on_warn set ... [ 77.842866][ T8769] CPU: 1 PID: 8769 Comm: syz-executor273 Not tainted 5.4.0-rc4 #0 [ 77.850660][ T8769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.861150][ T8769] Call Trace: [ 77.864431][ T8769] dump_stack+0x172/0x1f0 [ 77.868773][ T8769] ? hsr_addr_subst_dest+0x300/0x460 [ 77.874057][ T8769] panic+0x2e3/0x75c [ 77.877931][ T8769] ? add_taint.cold+0x16/0x16 [ 77.882590][ T8769] ? __kasan_check_write+0x14/0x20 [ 77.887852][ T8769] ? __warn.cold+0x14/0x35 [ 77.892243][ T8769] ? __warn+0xd9/0x1d0 [ 77.896294][ T8769] ? hsr_addr_subst_dest+0x382/0x460 [ 77.901640][ T8769] __warn.cold+0x2f/0x35 [ 77.905861][ T8769] ? hsr_addr_subst_dest+0x382/0x460 [ 77.911122][ T8769] report_bug+0x289/0x300 [ 77.915430][ T8769] do_error_trap+0x11b/0x200 [ 77.920004][ T8769] do_invalid_op+0x37/0x50 [ 77.924411][ T8769] ? hsr_addr_subst_dest+0x382/0x460 [ 77.929683][ T8769] invalid_op+0x23/0x30 [ 77.933817][ T8769] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 77.939686][ T8769] Code: 89 de e8 21 62 2f fa 84 db 75 d3 e8 d8 60 2f fa 48 c7 c6 a0 0e 67 88 48 c7 c7 60 0e 67 88 c6 05 0c e1 7e 02 01 e8 46 a3 00 fa <0f> 0b eb b0 e8 b5 60 2f fa 0f b6 1d f8 e0 7e 02 31 ff 89 de e8 e5 [ 77.959272][ T8769] RSP: 0018:ffff8880a1067590 EFLAGS: 00010282 [ 77.965318][ T8769] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 77.973272][ T8769] RDX: 0000000000000000 RSI: ffffffff815cb646 RDI: ffffed101420cea4 [ 77.981221][ T8769] RBP: ffff8880a10675d0 R08: ffff88809a3a84c0 R09: 0000000000000000 [ 77.989172][ T8769] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a513eb60 [ 77.997126][ T8769] R13: 0000000000000000 R14: 0000000032dcdcbf R15: 0000000000000000 [ 78.005094][ T8769] ? vprintk_func+0x86/0x189 [ 78.009776][ T8769] hsr_forward_skb+0x138b/0x1d30 [ 78.014711][ T8769] hsr_dev_xmit+0x72/0xa0 [ 78.019022][ T8769] dev_hard_start_xmit+0x1a3/0x9b0 [ 78.024209][ T8769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.030429][ T8769] __dev_queue_xmit+0x2c6c/0x3720 [ 78.035434][ T8769] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 78.041697][ T8769] ? refcount_add_checked+0x33/0x70 [ 78.046881][ T8769] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 78.052152][ T8769] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 78.058371][ T8769] ? packet_parse_headers.isra.0+0x350/0x4a0 [ 78.064329][ T8769] ? packet_parse_headers.isra.0+0x12c/0x4a0 [ 78.070314][ T8769] ? prb_dispatch_next_block+0x1b0/0x1b0 [ 78.075938][ T8769] dev_queue_xmit+0x18/0x20 [ 78.080426][ T8769] ? dev_queue_xmit+0x18/0x20 [ 78.085086][ T8769] packet_sendmsg+0x2571/0x6140 [ 78.089923][ T8769] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.096164][ T8769] ? rw_copy_check_uvector+0x2ce/0x390 [ 78.101600][ T8769] ? lock_downgrade+0x920/0x920 [ 78.106457][ T8769] ? packet_notifier+0x880/0x880 [ 78.111463][ T8769] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 78.117020][ T8769] ? apparmor_socket_sendmsg+0x2a/0x30 [ 78.122464][ T8769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.128687][ T8769] ? security_socket_sendmsg+0x8d/0xc0 [ 78.134132][ T8769] ? packet_notifier+0x880/0x880 [ 78.139052][ T8769] sock_sendmsg+0xd7/0x130 [ 78.143453][ T8769] ___sys_sendmsg+0x803/0x920 [ 78.148117][ T8769] ? copy_msghdr_from_user+0x440/0x440 [ 78.153554][ T8769] ? ___sys_sendmsg+0x920/0x920 [ 78.158389][ T8769] ? prep_transhuge_page+0xa0/0xa0 [ 78.163490][ T8769] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.169707][ T8769] ? __fget_light+0x1a9/0x230 [ 78.174373][ T8769] ? __fdget+0x1b/0x20 [ 78.178422][ T8769] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.184656][ T8769] __sys_sendmsg+0x105/0x1d0 [ 78.189243][ T8769] ? __sys_sendmsg_sock+0xd0/0xd0 [ 78.194255][ T8769] ? down_read_non_owner+0x490/0x490 [ 78.199528][ T8769] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 78.204966][ T8769] ? do_syscall_64+0x26/0x760 [ 78.209622][ T8769] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.215726][ T8769] ? do_syscall_64+0x26/0x760 [ 78.220885][ T8769] __x64_sys_sendmsg+0x78/0xb0 [ 78.225650][ T8769] do_syscall_64+0xfa/0x760 [ 78.230137][ T8769] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.236024][ T8769] RIP: 0033:0x442959 [ 78.239903][ T8769] Code: e8 9c 07 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 8b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.259484][ T8769] RSP: 002b:00007fff4861d438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.267872][ T8769] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442959 [ 78.275832][ T8769] RDX: 0000000000000000 RSI: 0000000020001e40 RDI: 0000000000000003 [ 78.283780][ T8769] RBP: 0000000000012f57 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 78.291730][ T8769] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 78.299688][ T8769] R13: 0000000000403700 R14: 0000000000000000 R15: 0000000000000000 [ 78.309187][ T8769] Kernel Offset: disabled [ 78.313608][ T8769] Rebooting in 86400 seconds..