[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.366836][ T27] audit: type=1800 audit(1578349847.975:25): pid=9471 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.386926][ T27] audit: type=1800 audit(1578349847.975:26): pid=9471 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.443785][ T27] audit: type=1800 audit(1578349847.985:27): pid=9471 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 '10.128.0.123' (ECDSA) to the list of known hosts. syzkaller login: [ 91.840868][ T9625] IPVS: ftp: loaded support on port[0] = 21 [ 91.908526][ T9625] chnl_net:caif_netlink_parms(): no params data found [ 91.938772][ T9625] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.946325][ T9625] bridge0: port 1(bridge_slave_0) entered disabled state [ 91.954028][ T9625] device bridge_slave_0 entered promiscuous mode [ 91.962912][ T9625] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.970170][ T9625] bridge0: port 2(bridge_slave_1) entered disabled state [ 91.978273][ T9625] device bridge_slave_1 entered promiscuous mode [ 91.994892][ T9625] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.006318][ T9625] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.025579][ T9625] team0: Port device team_slave_0 added [ 92.032785][ T9625] team0: Port device team_slave_1 added [ 92.116446][ T9625] device hsr_slave_0 entered promiscuous mode [ 92.184963][ T9625] device hsr_slave_1 entered promiscuous mode [ 92.308236][ T9625] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 92.367022][ T9625] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 92.406809][ T9625] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 92.446895][ T9625] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 92.495544][ T9625] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.502713][ T9625] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.510492][ T9625] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.517691][ T9625] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.555888][ T9625] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.571390][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 92.581757][ T3010] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.589812][ T3010] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.597797][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 92.611131][ T9625] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.621360][ T3219] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 92.630572][ T3219] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.637691][ T3219] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.649084][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 92.658473][ T3010] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.665612][ T3010] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.685759][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 92.695603][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 92.705217][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 92.719952][ T9625] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 92.731460][ T9625] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 92.743791][ T2779] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 92.752366][ T2779] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 92.761111][ T2779] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 92.778364][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 92.786239][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 92.799778][ T9625] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 92.817503][ T2779] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 92.838008][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 92.846519][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 92.854105][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready executing program [ 92.863961][ T9625] device veth0_vlan entered promiscuous mode [ 92.876410][ T9625] device veth1_vlan entered promiscuous mode [ 92.893219][ T9625] netlink: 80 bytes leftover after parsing attributes in process `syz-executor103'. [ 92.903777][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 92.912133][ T3010] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 92.921098][ T9625] netlink: 80 bytes leftover after parsing attributes in process `syz-executor103'. [ 92.924545][ C1] divide error: 0000 [#1] PREEMPT SMP KASAN [ 92.936350][ C1] CPU: 1 PID: 3010 Comm: kworker/1:38 Not tainted 5.5.0-rc5-syzkaller #0 [ 92.944733][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.954806][ C1] Workqueue: ipv6_addrconf addrconf_dad_work [ 92.960777][ C1] RIP: 0010:tabledist.part.0+0x13f/0x170 [ 92.966389][ C1] Code: e8 48 83 c4 08 5b 41 5c 41 5d 41 5e 5d c3 e8 a8 09 28 fb 48 81 eb 00 10 00 00 eb a5 e8 9a 09 28 fb 43 8d 0c 24 44 89 f0 31 d2 f1 4d 29 e5 49 01 d5 eb c5 48 89 df e8 8f c2 65 fb e9 0d ff ff [ 92.986105][ C1] RSP: 0018:ffffc90000da7f38 EFLAGS: 00010246 [ 92.992194][ C1] RAX: 0000000037230827 RBX: 0000000000000000 RCX: 0000000000000000 [ 93.000142][ C1] RDX: 0000000000000000 RSI: ffffffff864d2396 RDI: 0000000000000005 [ 93.008164][ C1] RBP: ffffc90000da7f60 R08: ffff88809e916540 R09: ffffed1013014c2f [ 93.016128][ C1] R10: ffffed1013014c2e R11: ffff8880980a6177 R12: ffffffff80000000 [ 93.024120][ C1] R13: 0000000000000000 R14: 0000000037230827 R15: ffff8880980a6000 [ 93.032071][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 93.041003][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.047573][ C1] CR2: 000055b98a6f6110 CR3: 00000000a9b1b000 CR4: 00000000001406e0 [ 93.055528][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.063524][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.071472][ C1] Call Trace: [ 93.074735][ C1] [ 93.077573][ C1] ? get_crandom+0x72/0x140 [ 93.082065][ C1] netem_enqueue+0x416/0x2e10 [ 93.086753][ C1] ? lock_acquire+0x190/0x410 [ 93.091448][ C1] __dev_queue_xmit+0x152e/0x35c0 [ 93.096449][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.102618][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 93.107882][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.114100][ C1] ? br_nf_post_routing+0xd5f/0x1d10 [ 93.119360][ C1] ? br_forward_finish+0x235/0x3f0 [ 93.124633][ C1] ? find_held_lock+0x35/0x130 [ 93.129382][ C1] ? br_forward_finish+0x235/0x3f0 [ 93.134477][ C1] dev_queue_xmit+0x18/0x20 [ 93.138961][ C1] ? dev_queue_xmit+0x18/0x20 [ 93.143616][ C1] br_dev_queue_push_xmit+0x3f3/0x5e0 [ 93.148967][ C1] ? __kasan_check_read+0x11/0x20 [ 93.153972][ C1] br_forward_finish+0xfa/0x3f0 [ 93.158802][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 93.164328][ C1] ? br_fdb_add.cold+0x87/0x87 [ 93.169071][ C1] ? __kasan_check_read+0x11/0x20 [ 93.174070][ C1] __br_forward+0x63c/0xaf0 [ 93.178550][ C1] ? br_forward_finish+0x3f0/0x3f0 [ 93.183635][ C1] ? br_dev_queue_push_xmit+0x5e0/0x5e0 [ 93.189155][ C1] deliver_clone+0x61/0xc0 [ 93.193543][ C1] maybe_deliver+0x2c7/0x390 [ 93.198112][ C1] br_flood+0x13a/0x3d0 [ 93.202244][ C1] br_dev_xmit+0x98c/0x1590 [ 93.206747][ C1] ? br_poll_controller+0x10/0x10 [ 93.211756][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.217900][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 93.223425][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 93.229380][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.235522][ C1] dev_hard_start_xmit+0x1a3/0x9b0 [ 93.240619][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.248488][ C1] __dev_queue_xmit+0x2b05/0x35c0 [ 93.253489][ C1] ? __kasan_check_read+0x11/0x20 [ 93.258487][ C1] ? __lock_acquire+0x16f2/0x4a00 [ 93.263508][ C1] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 93.268883][ C1] ? __kasan_check_read+0x11/0x20 [ 93.273886][ C1] ? mark_lock+0xc2/0x1220 [ 93.278330][ C1] ? mark_held_locks+0xa4/0xf0 [ 93.283085][ C1] ? ip6_finish_output2+0xc98/0x25c0 [ 93.288394][ C1] ? __ip6_finish_output+0x444/0xaa0 [ 93.293700][ C1] ? ip6_finish_output2+0xc98/0x25c0 [ 93.298966][ C1] dev_queue_xmit+0x18/0x20 [ 93.303446][ C1] ? dev_queue_xmit+0x18/0x20 [ 93.308104][ C1] ip6_finish_output2+0xfbe/0x25c0 [ 93.313195][ C1] ? ip6_frag_next+0xb20/0xb20 [ 93.317933][ C1] ? __kasan_check_read+0x11/0x20 [ 93.322933][ C1] __ip6_finish_output+0x444/0xaa0 [ 93.328018][ C1] ? __ip6_finish_output+0x444/0xaa0 [ 93.333290][ C1] ip6_finish_output+0x38/0x1f0 [ 93.338114][ C1] ip6_output+0x25e/0x880 [ 93.342504][ C1] ? ip6_finish_output+0x1f0/0x1f0 [ 93.347589][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 93.353107][ C1] ? __ip6_finish_output+0xaa0/0xaa0 [ 93.358363][ C1] ? xfrm_lookup+0x38/0x50 [ 93.362756][ C1] mld_sendpack+0x9c2/0xed0 [ 93.367234][ C1] ? nf_hook.constprop.0+0x560/0x560 [ 93.372506][ C1] ? mld_ifc_timer_expire+0x43e/0x950 [ 93.377861][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 93.383207][ C1] mld_ifc_timer_expire+0x454/0x950 [ 93.388380][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 93.393905][ C1] call_timer_fn+0x1ac/0x780 [ 93.398479][ C1] ? mld_dad_timer_expire+0x230/0x230 [ 93.403827][ C1] ? msleep_interruptible+0x150/0x150 [ 93.409184][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 93.414359][ C1] ? trace_hardirqs_on+0x67/0x240 [ 93.419360][ C1] ? mld_dad_timer_expire+0x230/0x230 [ 93.424710][ C1] ? mld_dad_timer_expire+0x230/0x230 [ 93.430058][ C1] run_timer_softirq+0x6c3/0x1790 [ 93.435063][ C1] ? add_timer+0x930/0x930 [ 93.439472][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.445600][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 93.451123][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 93.457088][ C1] ? trace_hardirqs_on+0x67/0x240 [ 93.462089][ C1] __do_softirq+0x262/0x98c [ 93.466563][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 93.471390][ C1] irq_exit+0x19b/0x1e0 [ 93.475525][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 93.481056][ C1] apic_timer_interrupt+0xf/0x20 [ 93.485967][ C1] [ 93.488886][ C1] RIP: 0010:check_memory_region+0x1d/0x1a0 [ 93.494703][ C1] Code: 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 48 85 f6 0f 84 34 01 00 00 48 b8 ff ff ff ff ff 7f ff ff 55 0f b6 d2 48 39 c7 48 89 e5 <41> 55 41 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 [ 93.514284][ C1] RSP: 0018:ffffc9000861fa40 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13 [ 93.522686][ C1] RAX: ffff7fffffffffff RBX: ffff88809e204340 RCX: ffffffff815993ff [ 93.530991][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88809e916540 [ 93.538955][ C1] RBP: ffffc9000861fa40 R08: 1ffffffff149b0fc R09: fffffbfff149b0fd [ 93.546911][ C1] R10: fffffbfff149b0fc R11: ffffffff8a4d87e7 R12: ffffffff8a4d87e0 [ 93.554866][ C1] R13: ffff88809e916540 R14: 0000000000000000 R15: dffffc0000000000 [ 93.562834][ C1] ? mutex_spin_on_owner+0xdf/0x330 [ 93.568063][ C1] __kasan_check_read+0x11/0x20 [ 93.572891][ C1] mutex_spin_on_owner+0xdf/0x330 [ 93.577934][ C1] ? __kasan_check_read+0x11/0x20 [ 93.582941][ C1] __mutex_lock+0x32b/0x13c0 [ 93.587509][ C1] ? rtnl_lock+0x17/0x20 [ 93.591731][ C1] ? mutex_trylock+0x2d0/0x2d0 [ 93.596471][ C1] ? mark_lock+0xc2/0x1220 [ 93.600861][ C1] ? __kasan_check_read+0x11/0x20 [ 93.605871][ C1] ? __lock_acquire+0x16f2/0x4a00 [ 93.610875][ C1] mutex_lock_nested+0x16/0x20 [ 93.615619][ C1] ? mutex_lock_nested+0x16/0x20 [ 93.620535][ C1] rtnl_lock+0x17/0x20 [ 93.624583][ C1] addrconf_dad_work+0xad/0x11d0 [ 93.629519][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.635666][ C1] ? addrconf_dad_completed+0xbb0/0xbb0 [ 93.641198][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 93.646727][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 93.652687][ C1] ? trace_hardirqs_on+0x67/0x240 [ 93.657700][ C1] process_one_work+0x9af/0x1740 [ 93.662658][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 93.668009][ C1] ? lock_acquire+0x190/0x410 [ 93.672665][ C1] worker_thread+0x98/0xe40 [ 93.677150][ C1] kthread+0x361/0x430 [ 93.681200][ C1] ? process_one_work+0x1740/0x1740 [ 93.686376][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 93.692083][ C1] ret_from_fork+0x24/0x30 [ 93.696474][ C1] Modules linked in: [ 93.700389][ C1] ---[ end trace 8cd136136e6cb948 ]--- [ 93.706413][ C1] RIP: 0010:tabledist.part.0+0x13f/0x170 [ 93.712037][ C1] Code: e8 48 83 c4 08 5b 41 5c 41 5d 41 5e 5d c3 e8 a8 09 28 fb 48 81 eb 00 10 00 00 eb a5 e8 9a 09 28 fb 43 8d 0c 24 44 89 f0 31 d2 f1 4d 29 e5 49 01 d5 eb c5 48 89 df e8 8f c2 65 fb e9 0d ff ff [ 93.731704][ C1] RSP: 0018:ffffc90000da7f38 EFLAGS: 00010246 [ 93.737764][ C1] RAX: 0000000037230827 RBX: 0000000000000000 RCX: 0000000000000000 [ 93.745728][ C1] RDX: 0000000000000000 RSI: ffffffff864d2396 RDI: 0000000000000005 [ 93.753702][ C1] RBP: ffffc90000da7f60 R08: ffff88809e916540 R09: ffffed1013014c2f [ 93.761675][ C1] R10: ffffed1013014c2e R11: ffff8880980a6177 R12: ffffffff80000000 [ 93.769635][ C1] R13: 0000000000000000 R14: 0000000037230827 R15: ffff8880980a6000 [ 93.777595][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 93.786509][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.794127][ C1] CR2: 000055b98a6f6110 CR3: 00000000a9b1b000 CR4: 00000000001406e0 [ 93.802114][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.810622][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.818628][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 93.827290][ C1] Kernel Offset: disabled [ 93.831612][ C1] Rebooting in 86400 seconds..