[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 27.275100] kauditd_printk_skb: 7 callbacks suppressed [ 27.275113] audit: type=1800 audit(1538167677.727:29): pid=5234 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 27.299951] audit: type=1800 audit(1538167677.737:30): pid=5234 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. 2018/09/28 20:48:08 parsed 1 programs 2018/09/28 20:48:10 executed programs: 0 syzkaller login: [ 40.285178] IPVS: ftp: loaded support on port[0] = 21 [ 40.290854] IPVS: ftp: loaded support on port[0] = 21 [ 40.305680] IPVS: ftp: loaded support on port[0] = 21 [ 40.358661] IPVS: ftp: loaded support on port[0] = 21 [ 40.374435] IPVS: ftp: loaded support on port[0] = 21 [ 40.374770] IPVS: ftp: loaded support on port[0] = 21 [ 41.636049] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.655975] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.664344] device bridge_slave_0 entered promiscuous mode [ 41.780508] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.786906] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.794938] device bridge_slave_1 entered promiscuous mode [ 41.804119] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.812422] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.820349] device bridge_slave_0 entered promiscuous mode [ 41.837260] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.856426] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.864171] device bridge_slave_0 entered promiscuous mode [ 41.871478] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.882582] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.890819] device bridge_slave_0 entered promiscuous mode [ 41.897643] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.904001] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.911940] device bridge_slave_0 entered promiscuous mode [ 41.921553] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.931312] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.939852] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.947300] device bridge_slave_1 entered promiscuous mode [ 41.960178] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.966574] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.975736] device bridge_slave_0 entered promiscuous mode [ 41.986406] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.993466] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.001507] device bridge_slave_1 entered promiscuous mode [ 42.010421] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.016778] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.025069] device bridge_slave_1 entered promiscuous mode [ 42.034004] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.044453] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.053093] device bridge_slave_1 entered promiscuous mode [ 42.061955] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.071027] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.084028] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.098405] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.117808] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.136957] bridge0: port 2(bridge_slave_1) entered blocking state [ 42.148733] bridge0: port 2(bridge_slave_1) entered disabled state [ 42.155694] device bridge_slave_1 entered promiscuous mode [ 42.178524] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.189304] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.199628] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.206888] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.282871] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.318936] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.355471] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.387026] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.429992] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.461658] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.479499] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.498412] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.509847] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.531813] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.545979] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.560029] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.577325] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.659590] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.712443] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.749983] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.757861] team0: Port device team_slave_0 added [ 42.807405] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.860234] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.869908] team0: Port device team_slave_1 added [ 42.883946] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.896143] team0: Port device team_slave_0 added [ 42.944015] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.964145] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.981086] team0: Port device team_slave_1 added [ 42.987904] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.995227] team0: Port device team_slave_0 added [ 43.029064] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.036361] team0: Port device team_slave_0 added [ 43.050875] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.070704] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.092731] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.103661] team0: Port device team_slave_1 added [ 43.109841] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.126100] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.135574] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.148958] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.166481] team0: Port device team_slave_1 added [ 43.180429] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.205158] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.217859] team0: Port device team_slave_0 added [ 43.226701] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.235505] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.255991] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.274720] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.293788] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.317647] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.327342] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.344973] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.353287] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.363212] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.371273] team0: Port device team_slave_1 added [ 43.380399] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 43.396670] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 43.408774] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.415879] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 43.426354] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.446173] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 43.455531] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.463726] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.471733] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.489030] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.498784] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.511517] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.525604] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.535212] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.547680] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.567849] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.576890] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.585043] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.593134] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.601073] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.608995] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.621727] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.632533] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.641707] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.652540] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.668815] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.682520] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.693467] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 43.710367] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.722066] team0: Port device team_slave_0 added [ 43.727207] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 43.742209] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.786761] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.802808] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.814849] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.834178] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.848652] team0: Port device team_slave_1 added [ 43.876925] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.891987] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.902228] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.932715] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.957791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.973101] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.040357] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.083870] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 44.106654] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.118242] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 44.142479] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 44.164556] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.178807] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 44.341033] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.347567] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.354466] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.360881] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.380891] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.496316] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.502791] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.509517] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.515882] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.524387] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.533797] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.540236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.546933] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.553389] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.562608] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.654461] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.660890] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.667624] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.673999] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.691457] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.806475] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.812935] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.819665] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.826032] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.841988] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.049850] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.056248] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.062980] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.069394] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.084606] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.357994] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.365455] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.376563] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.384014] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.391832] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.399396] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 47.336076] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.502696] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.542373] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.562607] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.594389] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.664148] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.732050] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.795683] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.873044] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.889170] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.899787] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.913627] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.984306] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.999515] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.013855] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.027300] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.066226] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.087354] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.101666] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.153373] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.193585] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.224394] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.233684] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.246376] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.268712] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.302875] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.317331] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.343066] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.376163] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.516435] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 48.534276] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.559259] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.762315] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.769995] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.779921] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 49.062041] 8021q: adding VLAN 0 to HW filter on device team0 [ 49.989068] hrtimer: interrupt took 31734 ns 2018/09/28 20:48:20 executed programs: 6 [ 51.487873] ================================================================== [ 51.495399] BUG: KASAN: use-after-free in ccid_hc_tx_delete+0xe0/0x100 [ 51.502080] Read of size 8 at addr ffff8801c4985480 by task syz-executor1/5408 [ 51.509438] [ 51.511074] CPU: 0 PID: 5408 Comm: syz-executor1 Not tainted 4.19.0-rc5+ #35 [ 51.518260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.518268] Call Trace: [ 51.518274] [ 51.518295] dump_stack+0x1c4/0x2b4 [ 51.518315] ? dump_stack_print_info.cold.2+0x52/0x52 [ 51.518333] ? printk+0xa7/0xcf [ 51.518346] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 51.518369] print_address_description.cold.8+0x9/0x1ff [ 51.554720] kasan_report.cold.9+0x242/0x309 [ 51.559153] ? ccid_hc_tx_delete+0xe0/0x100 [ 51.563492] __asan_report_load8_noabort+0x14/0x20 [ 51.568431] ccid_hc_tx_delete+0xe0/0x100 [ 51.572597] ? dccp_init_sock+0x4a0/0x4a0 [ 51.576798] dccp_sk_destruct+0x3c/0x80 [ 51.580798] __sk_destruct+0x107/0xa80 [ 51.584711] ? sock_no_getname+0x10/0x10 [ 51.588801] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 51.593912] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 51.599027] ? lockdep_hardirqs_on+0x19e/0x5c0 [ 51.603687] ? trace_hardirqs_on+0xbd/0x310 [ 51.608074] ? kasan_check_read+0x11/0x20 [ 51.612236] ? debug_object_deactivate+0x2eb/0x450 [ 51.612254] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 51.612274] ? lock_acquire+0x1ed/0x520 [ 51.612297] ? rcu_process_callbacks+0x1012/0x2670 [ 51.622676] ? lock_release+0x970/0x970 [ 51.622690] ? debug_stats_show+0x100/0x100 [ 51.622704] ? file_free_rcu+0x91/0xd0 [ 51.622724] ? kmem_cache_free+0x24f/0x290 [ 51.648040] ? sock_no_getname+0x10/0x10 [ 51.652119] rcu_process_callbacks+0xf23/0x2670 [ 51.656818] ? __rcu_read_unlock+0x2f0/0x2f0 [ 51.661254] ? find_held_lock+0x36/0x1c0 [ 51.665332] ? rebalance_domains+0x358/0xdc0 [ 51.669747] ? lock_downgrade+0x900/0x900 [ 51.673906] ? check_preemption_disabled+0x48/0x200 [ 51.678942] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 51.684749] ? kasan_check_read+0x11/0x20 [ 51.688922] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 51.694208] ? rcu_bh_qs+0xc0/0xc0 [ 51.697805] ? rebalance_domains+0x375/0xdc0 [ 51.702237] ? load_balance+0x3430/0x3430 [ 51.706398] ? enqueue_hrtimer+0x1a5/0x560 [ 51.710640] ? lock_release+0x970/0x970 [ 51.710657] ? hrtimer_update_softirq_timer+0xa0/0xa0 [ 51.710678] ? find_held_lock+0x36/0x1c0 [ 51.710699] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.710719] ? check_preemption_disabled+0x48/0x200 [ 51.734461] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.740032] ? check_preemption_disabled+0x48/0x200 [ 51.745060] ? check_preemption_disabled+0x48/0x200 [ 51.750096] ? rcu_lockdep_current_cpu_online+0x1f0/0x2d0 [ 51.755654] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 51.760940] ? rcu_pm_notify+0xc0/0xc0 [ 51.764856] __do_softirq+0x30b/0xad8 [ 51.768681] ? __irqentry_text_end+0x1f9618/0x1f9618 [ 51.773804] ? pvclock_read_flags+0x160/0x160 [ 51.778318] ? lapic_next_event+0x5a/0x90 [ 51.782480] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.788030] ? check_preemption_disabled+0x48/0x200 [ 51.793059] ? check_preemption_disabled+0x48/0x200 [ 51.798104] ? kvm_clock_read+0x18/0x30 [ 51.802088] ? kvm_sched_clock_read+0x9/0x20 [ 51.806525] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.812075] ? check_preemption_disabled+0x48/0x200 [ 51.817135] irq_exit+0x17f/0x1c0 [ 51.820594] smp_apic_timer_interrupt+0x1cb/0x760 [ 51.820622] ? smp_reschedule_interrupt+0x109/0x650 [ 51.820639] ? smp_call_function_single_interrupt+0x650/0x650 [ 51.820657] ? interrupt_entry+0xb5/0xf0 [ 51.830531] ? trace_hardirqs_off_caller+0xbb/0x310 [ 51.830546] ? trace_hardirqs_off_caller+0xbb/0x310 [ 51.830563] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.830578] ? trace_hardirqs_on_caller+0x310/0x310 [ 51.830592] ? trace_hardirqs_on_caller+0x310/0x310 [ 51.830611] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.870960] ? check_preemption_disabled+0x48/0x200 [ 51.875991] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.881549] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.881576] apic_timer_interrupt+0xf/0x20 [ 51.881583] [ 51.881594] RIP: 0033:0x45a3da [ 51.881612] Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d af c0 5e 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7 [ 51.914973] RSP: 002b:00007ffcc939fb38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 51.922694] RAX: 0000000000000000 RBX: 000000000000c8ff RCX: 000000000045a3da [ 51.922708] RDX: 0000000000000000 RSI: 00007ffcc939fb40 RDI: 0000000000000001 [ 51.937262] RBP: 000000000000011a R08: 0000000000000001 R09: 0000000000fe6940 [ 51.944541] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 51.951815] R13: 000000000000c8e5 R14: 0000000000000008 R15: 0000000000000001 [ 51.959114] [ 51.960749] Allocated by task 7115: [ 51.964402] save_stack+0x43/0xd0 [ 51.967867] kasan_kmalloc+0xc7/0xe0 [ 51.971588] kasan_slab_alloc+0x12/0x20 [ 51.971603] kmem_cache_alloc+0x12e/0x730 [ 51.971615] ccid_new+0x25b/0x3e0 [ 51.971626] dccp_hdlr_ccid+0x27/0x150 [ 51.971643] __dccp_feat_activate+0x188/0x280 [ 51.991936] dccp_feat_activate_values+0x3c1/0x80a [ 51.991949] dccp_rcv_state_process+0x11d4/0x1a32 [ 51.991961] dccp_v6_do_rcv+0x271/0xbf0 [ 51.991981] __release_sock+0x12f/0x3a0 [ 51.991998] release_sock+0xad/0x2c0 [ 52.001768] __inet_stream_connect+0x641/0x1150 [ 52.009698] inet_stream_connect+0x58/0xa0 [ 52.009711] __sys_connect+0x37d/0x4c0 [ 52.009723] __x64_sys_connect+0x73/0xb0 [ 52.009737] do_syscall_64+0x1b9/0x820 [ 52.009756] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.039331] [ 52.040977] Freed by task 7115: [ 52.044261] save_stack+0x43/0xd0 [ 52.047724] __kasan_slab_free+0x102/0x150 [ 52.051975] kasan_slab_free+0xe/0x10 [ 52.055792] kmem_cache_free+0x83/0x290 [ 52.059813] ccid_hc_tx_delete+0xc3/0x100 [ 52.063972] dccp_hdlr_ccid+0x7d/0x150 [ 52.067859] __dccp_feat_activate+0x188/0x280 [ 52.072340] dccp_feat_activate_values+0x3c1/0x80a [ 52.077255] dccp_create_openreq_child+0x47a/0x630 [ 52.082404] dccp_v6_request_recv_sock+0x278/0x2020 [ 52.087432] dccp_check_req+0x47d/0x6d0 [ 52.091439] dccp_v6_rcv+0x874/0x1ce9 [ 52.095263] ip6_input_finish+0x3fc/0x1aa0 [ 52.099512] ip6_input+0xe9/0x600 [ 52.102971] ip6_rcv_finish+0x17a/0x330 [ 52.106958] ipv6_rcv+0x11e/0x650 [ 52.110410] __netif_receive_skb_one_core+0x14d/0x200 [ 52.115584] __netif_receive_skb+0x2c/0x1e0 [ 52.119914] process_backlog+0x218/0x6f0 [ 52.123968] net_rx_action+0x7c5/0x1950 [ 52.128035] __do_softirq+0x30b/0xad8 [ 52.131845] [ 52.133465] The buggy address belongs to the object at ffff8801c4985480 [ 52.133465] which belongs to the cache ccid2_hc_tx_sock of size 1240 [ 52.146754] The buggy address is located 0 bytes inside of [ 52.146754] 1240-byte region [ffff8801c4985480, ffff8801c4985958) [ 52.158540] The buggy address belongs to the page: [ 52.163463] page:ffffea0007126100 count:1 mapcount:0 mapping:ffff8801caa0ea80 index:0x0 compound_mapcount: 0 [ 52.173416] flags: 0x2fffc0000008100(slab|head) [ 52.178071] raw: 02fffc0000008100 ffffea0006f2f488 ffffea0006eaa188 ffff8801caa0ea80 [ 52.185949] raw: 0000000000000000 ffff8801c4984400 0000000100000005 0000000000000000 [ 52.193810] page dumped because: kasan: bad access detected [ 52.199511] [ 52.201118] Memory state around the buggy address: [ 52.206030] ffff8801c4985380: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 52.213372] ffff8801c4985400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 52.220713] >ffff8801c4985480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.228081] ^ [ 52.231431] ffff8801c4985500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.238810] ffff8801c4985580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.246160] ================================================================== [ 52.253504] Disabling lock debugging due to kernel taint [ 52.259004] Kernel panic - not syncing: panic_on_warn set ... [ 52.259004] [ 52.266378] CPU: 0 PID: 5408 Comm: syz-executor1 Tainted: G B 4.19.0-rc5+ #35 [ 52.274966] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.284314] Call Trace: [ 52.286385] kobject: 'loop2' (0000000040235590): kobject_uevent_env [ 52.286918] [ 52.295474] dump_stack+0x1c4/0x2b4 [ 52.295838] kobject: 'loop2' (0000000040235590): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 52.299110] ? dump_stack_print_info.cold.2+0x52/0x52 [ 52.299127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.299146] panic+0x238/0x4e7 [ 52.321698] ? add_taint.cold.5+0x16/0x16 [ 52.325848] ? trace_hardirqs_on+0x9a/0x310 [ 52.330153] ? trace_hardirqs_on+0xb4/0x310 [ 52.334459] ? trace_hardirqs_on+0xb4/0x310 [ 52.338771] kasan_end_report+0x47/0x4f [ 52.342737] kasan_report.cold.9+0x76/0x309 [ 52.347039] ? ccid_hc_tx_delete+0xe0/0x100 [ 52.351338] __asan_report_load8_noabort+0x14/0x20 [ 52.356272] ccid_hc_tx_delete+0xe0/0x100 [ 52.360404] ? dccp_init_sock+0x4a0/0x4a0 [ 52.364530] dccp_sk_destruct+0x3c/0x80 [ 52.368484] __sk_destruct+0x107/0xa80 [ 52.372362] ? sock_no_getname+0x10/0x10 [ 52.376414] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 52.381496] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 52.386579] ? lockdep_hardirqs_on+0x19e/0x5c0 [ 52.391145] ? trace_hardirqs_on+0xbd/0x310 [ 52.395446] ? kasan_check_read+0x11/0x20 [ 52.399588] ? debug_object_deactivate+0x2eb/0x450 [ 52.404501] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 52.409937] ? lock_acquire+0x1ed/0x520 [ 52.413889] ? rcu_process_callbacks+0x1012/0x2670 [ 52.418812] ? lock_release+0x970/0x970 [ 52.422770] ? debug_stats_show+0x100/0x100 [ 52.427072] ? file_free_rcu+0x91/0xd0 [ 52.430945] ? kmem_cache_free+0x24f/0x290 [ 52.435191] ? sock_no_getname+0x10/0x10 [ 52.439234] rcu_process_callbacks+0xf23/0x2670 [ 52.443885] ? __rcu_read_unlock+0x2f0/0x2f0 [ 52.448280] ? find_held_lock+0x36/0x1c0 [ 52.452323] ? rebalance_domains+0x358/0xdc0 [ 52.456721] ? lock_downgrade+0x900/0x900 [ 52.460848] ? check_preemption_disabled+0x48/0x200 [ 52.465860] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 52.471636] ? kasan_check_read+0x11/0x20 [ 52.475768] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 52.481028] ? rcu_bh_qs+0xc0/0xc0 [ 52.484554] ? rebalance_domains+0x375/0xdc0 [ 52.488948] ? load_balance+0x3430/0x3430 [ 52.493080] ? enqueue_hrtimer+0x1a5/0x560 [ 52.497297] ? lock_release+0x970/0x970 [ 52.501254] ? hrtimer_update_softirq_timer+0xa0/0xa0 [ 52.506429] ? find_held_lock+0x36/0x1c0 [ 52.510474] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.515990] ? check_preemption_disabled+0x48/0x200 [ 52.520987] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.526514] ? check_preemption_disabled+0x48/0x200 [ 52.531512] ? check_preemption_disabled+0x48/0x200 [ 52.536600] ? rcu_lockdep_current_cpu_online+0x1f0/0x2d0 [ 52.542118] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 52.547374] ? rcu_pm_notify+0xc0/0xc0 [ 52.551248] __do_softirq+0x30b/0xad8 [ 52.555033] ? __irqentry_text_end+0x1f9618/0x1f9618 [ 52.560140] ? pvclock_read_flags+0x160/0x160 [ 52.564614] ? lapic_next_event+0x5a/0x90 [ 52.568743] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.574269] ? check_preemption_disabled+0x48/0x200 [ 52.579269] ? check_preemption_disabled+0x48/0x200 [ 52.584269] ? kvm_clock_read+0x18/0x30 [ 52.588238] ? kvm_sched_clock_read+0x9/0x20 [ 52.592629] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.598148] ? check_preemption_disabled+0x48/0x200 [ 52.603160] irq_exit+0x17f/0x1c0 [ 52.606594] smp_apic_timer_interrupt+0x1cb/0x760 [ 52.611417] ? smp_reschedule_interrupt+0x109/0x650 [ 52.616414] ? smp_call_function_single_interrupt+0x650/0x650 [ 52.622280] ? interrupt_entry+0xb5/0xf0 [ 52.626324] ? trace_hardirqs_off_caller+0xbb/0x310 [ 52.631317] ? trace_hardirqs_off_caller+0xbb/0x310 [ 52.636311] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.641137] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.646147] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.651146] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.656659] ? check_preemption_disabled+0x48/0x200 [ 52.661656] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.667172] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.671997] apic_timer_interrupt+0xf/0x20 [ 52.676208] [ 52.678428] RIP: 0033:0x45a3da [ 52.681600] Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d af c0 5e 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7 [ 52.700479] RSP: 002b:00007ffcc939fb38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 52.708187] RAX: 0000000000000000 RBX: 000000000000c8ff RCX: 000000000045a3da [ 52.715446] RDX: 0000000000000000 RSI: 00007ffcc939fb40 RDI: 0000000000000001 [ 52.722691] RBP: 000000000000011a R08: 0000000000000001 R09: 0000000000fe6940 [ 52.729942] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 52.737189] R13: 000000000000c8e5 R14: 0000000000000008 R15: 0000000000000001 [ 52.745321] Kernel Offset: disabled [ 52.748959] Rebooting in 86400 seconds..