[ 42.679797][ T26] audit: type=1800 audit(1575405238.268:25): pid=8034 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.709023][ T26] audit: type=1800 audit(1575405238.268:26): pid=8034 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.757822][ T26] audit: type=1800 audit(1575405238.268:27): pid=8034 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.783915][ T26] audit: type=1800 audit(1575405238.278:28): pid=8034 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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 '10.128.1.17' (ECDSA) to the list of known hosts. 2019/12/03 20:34:09 fuzzer started 2019/12/03 20:34:10 dialing manager at 10.128.0.26:42111 2019/12/03 20:34:10 syscalls: 2689 2019/12/03 20:34:10 code coverage: enabled 2019/12/03 20:34:10 comparison tracing: enabled 2019/12/03 20:34:10 extra coverage: extra coverage is not supported by the kernel 2019/12/03 20:34:10 setuid sandbox: enabled 2019/12/03 20:34:10 namespace sandbox: enabled 2019/12/03 20:34:10 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 20:34:10 fault injection: enabled 2019/12/03 20:34:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 20:34:10 net packet injection: enabled 2019/12/03 20:34:10 net device setup: enabled 2019/12/03 20:34:10 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 20:34:10 devlink PCI setup: PCI device 0000:00:10.0 is not available 20:34:11 executing program 0: r0 = epoll_create1(0x0) r1 = io_uring_setup(0x333, &(0x7f0000000080)) epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000100)) 20:34:11 executing program 1: r0 = syz_open_dev$sndctrl(&(0x7f00000000c0)='/dev/snd/controlC#\x00', 0x353, 0x0) ioctl$SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE(r0, 0x80045530, &(0x7f00000002c0)=""/119) syzkaller login: [ 56.327084][ T8197] IPVS: ftp: loaded support on port[0] = 21 20:34:12 executing program 2: r0 = socket(0x10, 0x3, 0x0) write(r0, &(0x7f0000000140)="4d000000310007000000f4070e15f816a40007ed1000010008000100b7fc86ea0e8d3fed5a1f68bc7c51725b20058f2c5f7f65058a58209ec8f09c70227277449c6cc206748272482e8f03a92a", 0x4d) [ 56.483375][ T8197] chnl_net:caif_netlink_parms(): no params data found [ 56.543395][ T8197] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.559901][ T8197] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.569775][ T8197] device bridge_slave_0 entered promiscuous mode [ 56.578433][ T8197] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.586835][ T8197] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.587793][ T8200] IPVS: ftp: loaded support on port[0] = 21 [ 56.601887][ T8197] device bridge_slave_1 entered promiscuous mode [ 56.628366][ T8197] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.642024][ T8197] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.670734][ T8197] team0: Port device team_slave_0 added [ 56.681016][ T8197] team0: Port device team_slave_1 added 20:34:12 executing program 3: r0 = socket$inet6(0xa, 0x80000000000003, 0x3) ioctl$sock_SIOCETHTOOL(r0, 0x89a1, &(0x7f0000000140)={'bridge0\x00\x00z\x00\x00\x00\xff\xff\xfd'}) [ 56.781524][ T8197] device hsr_slave_0 entered promiscuous mode [ 56.829354][ T8197] device hsr_slave_1 entered promiscuous mode [ 56.887086][ T8202] IPVS: ftp: loaded support on port[0] = 21 [ 56.987157][ T8197] netdevsim netdevsim0 netdevsim0: renamed from eth0 20:34:12 executing program 4: keyctl$instantiate(0xc, 0x0, &(0x7f0000000100)=@encrypted_new={'new ', 'ecryptfs', 0x20, 'trusted:', '%m1', 0x20, 0xdfc}, 0xfffffffffffffe7e, 0xfffffffffffffffd) add_key(&(0x7f0000000140)='encrypted\x00', &(0x7f0000000180)={'syz'}, &(0x7f0000000100), 0x1f1, 0xfffffffffffffffe) [ 57.122921][ T8197] netdevsim netdevsim0 netdevsim1: renamed from eth1 20:34:12 executing program 5: r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) setsockopt$inet6_IPV6_ADDRFORM(r0, 0x29, 0x1, &(0x7f0000000100), 0x4) [ 57.221542][ T8197] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.253495][ T8197] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.320913][ T8197] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.328066][ T8197] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.335937][ T8197] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.341638][ T8206] IPVS: ftp: loaded support on port[0] = 21 [ 57.343080][ T8197] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.362147][ T8204] IPVS: ftp: loaded support on port[0] = 21 [ 57.470355][ T8200] chnl_net:caif_netlink_parms(): no params data found [ 57.488525][ T8210] IPVS: ftp: loaded support on port[0] = 21 [ 57.501738][ T8209] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.511281][ T8209] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.615352][ T8200] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.623312][ T8200] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.631526][ T8200] device bridge_slave_0 entered promiscuous mode [ 57.647832][ T8197] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.667463][ T8204] chnl_net:caif_netlink_parms(): no params data found [ 57.676771][ T8200] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.684082][ T8200] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.691747][ T8200] device bridge_slave_1 entered promiscuous mode [ 57.706514][ T8202] chnl_net:caif_netlink_parms(): no params data found [ 57.746783][ T8200] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.758801][ T8200] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.780888][ T8200] team0: Port device team_slave_0 added [ 57.793258][ T3044] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.801897][ T3044] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.834205][ T8200] team0: Port device team_slave_1 added [ 57.850378][ T8202] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.857497][ T8202] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.865631][ T8202] device bridge_slave_0 entered promiscuous mode [ 57.875441][ T8204] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.884028][ T8204] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.891845][ T8204] device bridge_slave_0 entered promiscuous mode [ 57.899435][ T8204] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.906484][ T8204] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.914481][ T8204] device bridge_slave_1 entered promiscuous mode [ 57.922530][ T8197] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.936524][ T8202] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.943843][ T8202] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.953663][ T8202] device bridge_slave_1 entered promiscuous mode [ 57.972434][ T8214] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.981172][ T8214] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.990173][ T8214] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.997233][ T8214] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.019838][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.028300][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.036949][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.044301][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.052607][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.061706][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.070390][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.078836][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.087335][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.095783][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.110472][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.211719][ T8200] device hsr_slave_0 entered promiscuous mode [ 58.259657][ T8200] device hsr_slave_1 entered promiscuous mode [ 58.309161][ T8200] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.326017][ T8204] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.337991][ T8204] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.350081][ T8202] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.363602][ T8210] chnl_net:caif_netlink_parms(): no params data found [ 58.374606][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.383016][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.415300][ T8202] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.434059][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.444890][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.454410][ T8197] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.497364][ T8204] team0: Port device team_slave_0 added [ 58.516134][ T8202] team0: Port device team_slave_0 added [ 58.522483][ T8200] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.583759][ T8200] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.642674][ T8204] team0: Port device team_slave_1 added [ 58.666451][ T8202] team0: Port device team_slave_1 added [ 58.678226][ T8206] chnl_net:caif_netlink_parms(): no params data found [ 58.688017][ T8200] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.753769][ T8210] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.762334][ T8210] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.771098][ T8210] device bridge_slave_0 entered promiscuous mode [ 58.783344][ T8210] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.790483][ T8210] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.798162][ T8210] device bridge_slave_1 entered promiscuous mode [ 58.817694][ T8200] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.911773][ T8204] device hsr_slave_0 entered promiscuous mode [ 58.949416][ T8204] device hsr_slave_1 entered promiscuous mode [ 59.019084][ T8204] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.081936][ T8202] device hsr_slave_0 entered promiscuous mode [ 59.119415][ T8202] device hsr_slave_1 entered promiscuous mode [ 59.159171][ T8202] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.193058][ T8197] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.201266][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.210038][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.224685][ T8206] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.234276][ T8206] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.242993][ T8206] device bridge_slave_0 entered promiscuous mode [ 59.265413][ T8210] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.281936][ T8206] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.294399][ T8206] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.304450][ T8206] device bridge_slave_1 entered promiscuous mode [ 59.338742][ T8210] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.370345][ T8206] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.379801][ T8202] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.423596][ T8202] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 164.448917][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.455703][ C0] rcu: 0-...!: (10499 ticks this GP) idle=3ea/1/0x4000000000000002 softirq=10471/10471 fqs=149 [ 164.466364][ C0] (t=10501 jiffies g=6129 q=91) [ 164.471317][ C0] rcu: rcu_preempt kthread starved for 10204 jiffies! g6129 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 164.482416][ C0] rcu: RCU grace-period kthread stack dump: [ 164.488304][ C0] rcu_preempt R running task 29104 10 2 0x80004000 [ 164.496205][ C0] Call Trace: [ 164.499506][ C0] __schedule+0x9a0/0xcc0 [ 164.503835][ C0] schedule+0x181/0x210 [ 164.507982][ C0] schedule_timeout+0x14f/0x240 [ 164.512821][ C0] ? run_local_timers+0x120/0x120 [ 164.518706][ C0] rcu_gp_kthread+0xed8/0x1770 [ 164.523472][ C0] kthread+0x332/0x350 [ 164.527527][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 164.532628][ C0] ? kthread_blkcg+0xe0/0xe0 [ 164.537243][ C0] ret_from_fork+0x24/0x30 [ 164.541664][ C0] NMI backtrace for cpu 0 [ 164.545987][ C0] CPU: 0 PID: 4157 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 164.553865][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.563926][ C0] Call Trace: [ 164.567196][ C0] [ 164.570043][ C0] dump_stack+0x1fb/0x318 [ 164.574367][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.579207][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.585350][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.591421][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.597394][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.603291][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.608406][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.613609][ C0] ? trace_hardirqs_off+0x74/0x80 [ 164.618624][ C0] update_process_times+0x12d/0x180 [ 164.623812][ C0] tick_sched_timer+0x263/0x420 [ 164.628651][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.634211][ C0] __hrtimer_run_queues+0x403/0x840 [ 164.639444][ C0] hrtimer_interrupt+0x38c/0xda0 [ 164.644424][ C0] ? debug_smp_processor_id+0x9/0x20 [ 164.649706][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 164.655242][ C0] apic_timer_interrupt+0xf/0x20 [ 164.660164][ C0] [ 164.663096][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 164.669239][ C0] Code: 64 02 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 <83> fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 8d 7e 01 8b 89 84 [ 164.688836][ C0] RSP: 0018:ffffc90001d87ad8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.697235][ C0] RAX: ffffffff81487326 RBX: ffffea0001b28640 RCX: ffff8880a04ea140 [ 164.705194][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001b28640 [ 164.713156][ C0] RBP: ffffc90001d87b00 R08: 000000000003a768 R09: fffffbfff120248a [ 164.721125][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88806ca044a0 [ 164.729083][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880998776e8 [ 164.737075][ C0] ? mod_memcg_page_state+0x16/0x190 [ 164.742358][ C0] ? free_thread_stack+0x124/0x590 [ 164.747456][ C0] ? mod_memcg_page_state+0x16/0x190 [ 164.752727][ C0] free_thread_stack+0x168/0x590 [ 164.757654][ C0] put_task_stack+0xa3/0x130 [ 164.762236][ C0] finish_task_switch+0x3f1/0x550 [ 164.767253][ C0] __schedule+0x9a8/0xcc0 [ 164.771933][ C0] schedule+0x181/0x210 [ 164.776079][ C0] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 164.782162][ C0] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 164.787961][ C0] schedule_hrtimeout_range+0x2a/0x40 [ 164.793321][ C0] ep_poll+0xa4d/0xe80 [ 164.797388][ C0] ? do_task_dead+0xc0/0xc0 [ 164.801883][ C0] ? __kasan_check_read+0x11/0x20 [ 164.806900][ C0] do_epoll_wait+0x1ee/0x260 [ 164.812876][ C0] __x64_sys_epoll_wait+0x9a/0xb0 [ 164.817889][ C0] do_syscall_64+0xf7/0x1c0 [ 164.822388][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 164.828289][ C0] RIP: 0033:0x7f212cf31943 [ 164.832695][ C0] Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 [ 164.852285][ C0] RSP: 002b:00007fff22081b78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 164.860681][ C0] RAX: ffffffffffffffda RBX: 0000000000eed250 RCX: 00007f212cf31943 [ 164.868679][ C0] RDX: 0000000000000004 RSI: 00007fff22081c40 RDI: 0000000000000007 [ 164.876651][ C0] RBP: 0000000000625500 R08: 00007fff22081b60 R09: 00007fff221650b8 [ 164.884619][ C0] R10: 000000000000ee42 R11: 0000000000000246 R12: 0000000000efdfe0 [ 164.892596][ C0] R13: 00007fff22082c97 R14: 0000000000000005 R15: 0000000000eed250