[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.543426][ T26] audit: type=1800 audit(1561781369.735:25): pid=8681 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.591331][ T26] audit: type=1800 audit(1561781369.735:26): pid=8681 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.660971][ T26] audit: type=1800 audit(1561781369.735:27): pid=8681 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 '10.128.1.32' (ECDSA) to the list of known hosts. syzkaller login: [ 90.223472][ T8834] IPVS: ftp: loaded support on port[0] = 21 [ 90.277918][ T8834] chnl_net:caif_netlink_parms(): no params data found [ 90.307019][ T8834] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.314716][ T8834] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.322673][ T8834] device bridge_slave_0 entered promiscuous mode [ 90.330936][ T8834] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.338162][ T8834] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.346189][ T8834] device bridge_slave_1 entered promiscuous mode [ 90.363383][ T8834] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 90.373428][ T8834] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 90.391047][ T8834] team0: Port device team_slave_0 added [ 90.398324][ T8834] team0: Port device team_slave_1 added [ 90.472503][ T8834] device hsr_slave_0 entered promiscuous mode [ 90.522540][ T8834] device hsr_slave_1 entered promiscuous mode [ 90.590135][ T8834] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.597381][ T8834] bridge0: port 2(bridge_slave_1) entered forwarding state [ 90.605311][ T8834] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.613295][ T8834] bridge0: port 1(bridge_slave_0) entered forwarding state [ 90.646864][ T8834] 8021q: adding VLAN 0 to HW filter on device bond0 [ 90.659940][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 90.680134][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.688923][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.697766][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 90.709390][ T8834] 8021q: adding VLAN 0 to HW filter on device team0 [ 90.719694][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 90.728572][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.735711][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 90.750882][ T8837] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 90.759391][ T8837] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.766492][ T8837] bridge0: port 2(bridge_slave_1) entered forwarding state [ 90.777871][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 90.787321][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 90.798465][ T8837] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 90.813722][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 90.825355][ T8834] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 90.837889][ T8834] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 90.846319][ T8837] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 90.865200][ T8834] 8021q: adding VLAN 0 to HW filter on device batadv0 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 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 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 executing program executing program executing program executing program [ 94.971688][ T8995] ------------[ cut here ]------------ [ 94.977302][ T8995] hsr_addr_subst_dest: Unknown node [ 94.983070][ T8995] WARNING: CPU: 0 PID: 8995 at net/hsr/hsr_framereg.c:294 hsr_addr_subst_dest+0x382/0x460 [ 94.992964][ T8995] Kernel panic - not syncing: panic_on_warn set ... [ 94.999553][ T8995] CPU: 0 PID: 8995 Comm: syz-executor676 Not tainted 5.2.0-rc6+ #36 [ 95.007559][ T8995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.017641][ T8995] Call Trace: [ 95.020922][ T8995] dump_stack+0x172/0x1f0 [ 95.025361][ T8995] ? hsr_addr_subst_dest+0x320/0x460 [ 95.030676][ T8995] panic+0x2cb/0x744 [ 95.034563][ T8995] ? __warn_printk+0xf3/0xf3 [ 95.039146][ T8995] ? hsr_addr_subst_dest+0x382/0x460 [ 95.044419][ T8995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.050642][ T8995] ? __warn.cold+0x5/0x4d [ 95.055275][ T8995] ? __warn+0xe8/0x1d0 [ 95.059338][ T8995] ? hsr_addr_subst_dest+0x382/0x460 [ 95.064615][ T8995] __warn.cold+0x20/0x4d [ 95.068838][ T8995] ? vprintk_emit+0x1ea/0x700 [ 95.073505][ T8995] ? hsr_addr_subst_dest+0x382/0x460 [ 95.078779][ T8995] report_bug+0x263/0x2b0 [ 95.083099][ T8995] do_error_trap+0x11b/0x200 [ 95.087683][ T8995] do_invalid_op+0x37/0x50 [ 95.092091][ T8995] ? hsr_addr_subst_dest+0x382/0x460 [ 95.097368][ T8995] invalid_op+0x14/0x20 [ 95.101514][ T8995] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 95.107387][ T8995] Code: 89 de e8 11 f2 5d fa 84 db 75 d3 e8 c8 f0 5d fa 48 c7 c6 60 9f 21 88 48 c7 c7 20 9f 21 88 c6 05 86 fb 69 02 01 e8 cc 29 30 fa <0f> 0b eb b0 e8 a5 f0 5d fa 0f b6 1d 72 fb 69 02 31 ff 89 de e8 d5 [ 95.126981][ T8995] RSP: 0018:ffff88809f2af460 EFLAGS: 00010282 [ 95.133060][ T8995] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 95.141027][ T8995] RDX: 0000000000000000 RSI: ffffffff815adb06 RDI: ffffed1013e55e7e [ 95.149025][ T8995] RBP: ffff88809f2af4a0 R08: ffff88808871a640 R09: 0000000000000000 [ 95.156989][ T8995] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809f387420 [ 95.164989][ T8995] R13: 0000000000000000 R14: 0000000047eef7b7 R15: 0000000000005e6f [ 95.173352][ T8995] ? vprintk_func+0x86/0x189 [ 95.177935][ T8995] hsr_forward_skb+0x138b/0x1d30 [ 95.182998][ T8995] hsr_dev_xmit+0x72/0xa0 [ 95.187325][ T8995] dev_hard_start_xmit+0x18a/0x950 [ 95.192458][ T8995] __dev_queue_xmit+0x2a8e/0x36b0 [ 95.197545][ T8995] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 95.202813][ T8995] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.208620][ T8995] ? _copy_from_iter+0x2e0/0xbf0 [ 95.213545][ T8995] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 95.219825][ T8995] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 95.226063][ T8995] ? packet_parse_headers.isra.0+0x350/0x4a0 [ 95.232029][ T8995] ? packet_parse_headers.isra.0+0x12c/0x4a0 [ 95.237998][ T8995] ? packet_mm_open+0xc0/0xc0 [ 95.242661][ T8995] dev_queue_xmit+0x18/0x20 [ 95.247145][ T8995] ? dev_queue_xmit+0x18/0x20 [ 95.251810][ T8995] packet_sendmsg+0x22d4/0x5f90 [ 95.256645][ T8995] ? __might_fault+0x12b/0x1e0 [ 95.261468][ T8995] ? find_held_lock+0x35/0x130 [ 95.266281][ T8995] ? __might_fault+0x12b/0x1e0 [ 95.271165][ T8995] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.277831][ T8995] ? compat_rw_copy_check_uvector+0x351/0x3f0 [ 95.283914][ T8995] ? __might_sleep+0x10/0x190 [ 95.288747][ T8995] ? packet_notifier+0x840/0x840 [ 95.293671][ T8995] ? _copy_from_user+0xdd/0x150 [ 95.298614][ T8995] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 95.304152][ T8995] ? apparmor_socket_sendmsg+0x2a/0x30 [ 95.309695][ T8995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.315933][ T8995] ? security_socket_sendmsg+0x8d/0xc0 [ 95.321392][ T8995] ? packet_notifier+0x840/0x840 [ 95.326328][ T8995] sock_sendmsg+0xd7/0x130 [ 95.330778][ T8995] ___sys_sendmsg+0x3e2/0x920 [ 95.335444][ T8995] ? copy_msghdr_from_user+0x430/0x430 [ 95.340890][ T8995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.347168][ T8995] ? kasan_check_read+0x11/0x20 [ 95.352005][ T8995] ? __fget+0x381/0x550 [ 95.356151][ T8995] ? ksys_dup3+0x3e0/0x3e0 [ 95.360552][ T8995] ? __fget_light+0x1a9/0x230 [ 95.365262][ T8995] ? __fdget+0x1b/0x20 [ 95.369331][ T8995] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 95.375831][ T8995] ? sockfd_lookup_light+0xcb/0x180 [ 95.381025][ T8995] __sys_sendmmsg+0x2db/0x4d0 [ 95.385700][ T8995] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 95.390724][ T8995] ? packet_do_bind+0x479/0xc30 [ 95.395626][ T8995] ? __sys_bind+0x15a/0x290 [ 95.400126][ T8995] ? __ia32_sys_socketpair+0xf0/0xf0 [ 95.405401][ T8995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.411647][ T8995] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.417895][ T8995] ? rcu_read_lock_sched_held+0x110/0x130 [ 95.423610][ T8995] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 95.429850][ T8995] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.435404][ T8995] ? do_fast_syscall_32+0xd1/0xd7d [ 95.440504][ T8995] ? entry_SYSENTER_compat+0x70/0x7f [ 95.445873][ T8995] ? do_fast_syscall_32+0xd1/0xd7d [ 95.450979][ T8995] __ia32_compat_sys_sendmmsg+0x9f/0x100 [ 95.456614][ T8995] do_fast_syscall_32+0x27b/0xd7d [ 95.461859][ T8995] entry_SYSENTER_compat+0x70/0x7f [ 95.467038][ T8995] RIP: 0023:0xf7f20849 [ 95.471115][ T8995] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 95.490804][ T8995] RSP: 002b:00000000f7efb1dc EFLAGS: 00000296 ORIG_RAX: 0000000000000159 [ 95.499218][ T8995] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020004e80 [ 95.507188][ T8995] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000003 [ 95.515151][ T8995] RBP: 0000000020000000 R08: 0000000000000000 R09: 0000000000000000 [ 95.523236][ T8995] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 95.531719][ T8995] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 95.541002][ T8995] Kernel Offset: disabled [ 95.545455][ T8995] Rebooting in 86400 seconds..