[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 77.815581][ T26] audit: type=1800 audit(1577182137.305:25): pid=9018 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 77.835360][ T26] audit: type=1800 audit(1577182137.305:26): pid=9018 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 77.872915][ T26] audit: type=1800 audit(1577182137.305:27): pid=9018 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 '10.128.0.24' (ECDSA) to the list of known hosts. 2019/12/24 10:09:09 parsed 1 programs 2019/12/24 10:09:12 executed programs: 0 syzkaller login: [ 92.597922][ T9186] IPVS: ftp: loaded support on port[0] = 21 [ 92.662171][ T9186] chnl_net:caif_netlink_parms(): no params data found [ 92.692448][ T9186] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.700070][ T9186] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.708177][ T9186] device bridge_slave_0 entered promiscuous mode [ 92.716940][ T9186] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.724119][ T9186] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.732013][ T9186] device bridge_slave_1 entered promiscuous mode [ 92.750330][ T9186] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.761029][ T9186] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.781741][ T9186] team0: Port device team_slave_0 added [ 92.789197][ T9186] team0: Port device team_slave_1 added [ 92.837996][ T9186] device hsr_slave_0 entered promiscuous mode [ 92.905588][ T9186] device hsr_slave_1 entered promiscuous mode [ 93.010207][ T9186] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 93.068054][ T9186] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 93.107742][ T9186] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 93.147434][ T9186] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 93.207347][ T9186] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.214541][ T9186] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.222455][ T9186] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.229556][ T9186] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.264465][ T9186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.279274][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.289338][ T2850] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.297954][ T2850] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.306579][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 93.319619][ T9186] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.329754][ T3123] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.338367][ T3123] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.345466][ T3123] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.355841][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.364216][ T2850] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.371332][ T2850] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.394272][ T9186] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 93.406422][ T9186] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 93.421137][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 93.430123][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 93.439048][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 93.447899][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 93.456481][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.464186][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 93.483077][ T9186] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 93.491538][ T3123] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 93.500250][ T3123] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 93.622105][ T9188] skbuff: skb_over_panic: text:00000000953548f1 len:194 put:82 head:00000000f0e17a31 data:00000000f0e17a31 tail:0xc2 end:0xc0 dev: [ 93.637822][ T9188] ------------[ cut here ]------------ [ 93.643446][ T9188] kernel BUG at net/core/skbuff.c:108! [ 93.649032][ T9188] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 93.655101][ T9188] CPU: 1 PID: 9188 Comm: syz-executor.0 Not tainted 5.5.0-rc3-syzkaller #0 [ 93.663683][ T9188] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.673730][ T9188] RIP: 0010:skb_panic+0x176/0x178 [ 93.678769][ T9188] Code: 6d 9e fb 4c 8b 4d b8 8b 4b 70 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 60 f5 d4 88 ff 75 c8 ff 75 c0 e8 a2 ff 49 fb <0f> 0b e8 a7 b4 60 fb 4c 8b 6d 08 e8 6e 64 9e fb 48 c7 c1 00 02 d5 [ 93.698371][ T9188] RSP: 0018:ffffc90001ed79e8 EFLAGS: 00010282 [ 93.704453][ T9188] RAX: 0000000000000086 RBX: ffff888098776440 RCX: 0000000000000000 [ 93.712422][ T9188] RDX: 0000000000000000 RSI: ffffffff815e8b56 RDI: fffff520003daf2f [ 93.720394][ T9188] RBP: ffffc90001ed7a50 R08: 0000000000000086 R09: ffffed1015d26621 [ 93.728789][ T9188] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: ffffffff88d50240 [ 93.736748][ T9188] R13: ffffffff8734af37 R14: 0000000000000052 R15: ffffffff88d4f520 [ 93.744730][ T9188] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000a478900 [ 93.753992][ T9188] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 93.760557][ T9188] CR2: 00000000208c0000 CR3: 000000009e899000 CR4: 00000000001406e0 [ 93.768514][ T9188] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.776906][ T9188] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.784861][ T9188] Call Trace: [ 93.788145][ T9188] ? sctp_addto_chunk+0xe7/0x2a0 [ 93.793072][ T9188] skb_put.cold+0x23/0x23 [ 93.797391][ T9188] sctp_addto_chunk+0xe7/0x2a0 [ 93.802153][ T9188] sctp_make_strreset_req+0x392/0x3e0 [ 93.807513][ T9188] ? sctp_make_ifwdtsn+0x150/0x150 [ 93.812610][ T9188] ? __kmalloc+0x608/0x770 [ 93.817013][ T9188] ? sctp_send_reset_streams+0x428/0xdd0 [ 93.823069][ T9188] sctp_send_reset_streams+0x7f9/0xdd0 [ 93.828535][ T9188] sctp_setsockopt+0x252f/0x7350 [ 93.833473][ T9188] ? sctp_setsockopt_bindx+0x2a0/0x2a0 [ 93.838926][ T9188] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.845159][ T9188] ? aa_label_sk_perm+0x91/0xf0 [ 93.850032][ T9188] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 93.856096][ T9188] ? aa_sk_perm+0x346/0xaf0 [ 93.860699][ T9188] ? aa_af_perm+0x2a0/0x2a0 [ 93.865189][ T9188] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 93.870728][ T9188] compat_sock_common_setsockopt+0x106/0x140 [ 93.876695][ T9188] __compat_sys_setsockopt+0x185/0x380 [ 93.882142][ T9188] ? sock_common_setsockopt+0xd0/0xd0 [ 93.887504][ T9188] ? __compat_sys_getsockopt+0x2c0/0x2c0 [ 93.893392][ T9188] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 93.899101][ T9188] ? do_fast_syscall_32+0xd1/0xe16 [ 93.904205][ T9188] ? entry_SYSENTER_compat+0x70/0x7f [ 93.909485][ T9188] ? do_fast_syscall_32+0xd1/0xe16 [ 93.914576][ T9188] __ia32_compat_sys_setsockopt+0xbd/0x150 [ 93.920366][ T9188] do_fast_syscall_32+0x27b/0xe16 [ 93.925377][ T9188] entry_SYSENTER_compat+0x70/0x7f [ 93.930474][ T9188] RIP: 0023:0xf7f19a39 [ 93.934523][ T9188] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 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 [ 93.954200][ T9188] RSP: 002b:00000000ff9555bc EFLAGS: 00000296 ORIG_RAX: 000000000000016e [ 93.962613][ T9188] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000084 [ 93.970565][ T9188] RDX: 0000000000000077 RSI: 000000002081e000 RDI: 00000000000002de [ 93.978522][ T9188] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 93.986504][ T9188] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 93.994552][ T9188] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 94.002511][ T9188] Modules linked in: [ 94.007914][ T9188] ---[ end trace 001cfada66dc2b81 ]--- [ 94.014199][ T9188] RIP: 0010:skb_panic+0x176/0x178 [ 94.019273][ T9188] Code: 6d 9e fb 4c 8b 4d b8 8b 4b 70 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 60 f5 d4 88 ff 75 c8 ff 75 c0 e8 a2 ff 49 fb <0f> 0b e8 a7 b4 60 fb 4c 8b 6d 08 e8 6e 64 9e fb 48 c7 c1 00 02 d5 [ 94.039091][ T9188] RSP: 0018:ffffc90001ed79e8 EFLAGS: 00010282 [ 94.045160][ T9188] RAX: 0000000000000086 RBX: ffff888098776440 RCX: 0000000000000000 [ 94.053155][ T9188] RDX: 0000000000000000 RSI: ffffffff815e8b56 RDI: fffff520003daf2f [ 94.061149][ T9188] RBP: ffffc90001ed7a50 R08: 0000000000000086 R09: ffffed1015d26621 [ 94.069138][ T9188] R10: ffffed1015d26620 R11: ffff8880ae933107 R12: ffffffff88d50240 [ 94.077599][ T9188] R13: ffffffff8734af37 R14: 0000000000000052 R15: ffffffff88d4f520 [ 94.085602][ T9188] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000a478900 [ 94.094532][ T9188] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 94.101160][ T9188] CR2: 00000000208c0000 CR3: 000000009e899000 CR4: 00000000001406e0 [ 94.109186][ T9188] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.117483][ T9188] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.125531][ T9188] Kernel panic - not syncing: Fatal exception [ 94.132835][ T9188] Kernel Offset: disabled [ 94.137159][ T9188] Rebooting in 86400 seconds..