[ 41.155299][ T23] audit: type=1800 audit(1575361633.794:29): pid=7863 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. 2019/12/03 08:27:21 fuzzer started 2019/12/03 08:27:22 dialing manager at 10.128.0.26:38907 2019/12/03 08:27:22 syscalls: 2697 2019/12/03 08:27:22 code coverage: enabled 2019/12/03 08:27:22 comparison tracing: enabled 2019/12/03 08:27:22 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:27:22 setuid sandbox: enabled 2019/12/03 08:27:22 namespace sandbox: enabled 2019/12/03 08:27:22 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:27:22 fault injection: enabled 2019/12/03 08:27:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:27:22 net packet injection: enabled 2019/12/03 08:27:22 net device setup: enabled 2019/12/03 08:27:22 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:27:22 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:27:23 executing program 0: r0 = socket$inet6_udp(0xa, 0x2, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r1 = socket$l2tp(0x18, 0x1, 0x1) connect$inet6(r0, 0x0, 0x0) setsockopt$inet6_IPV6_ADDRFORM(r0, 0x29, 0x1, 0x0, 0x0) connect$l2tp(r1, &(0x7f0000000080)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @multicast2}, 0x2}}, 0x2e) sendmmsg(r1, &(0x7f0000005fc0), 0xa9, 0x0) 08:27:24 executing program 1: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) unshare(0x8000400) setsockopt$inet6_mreq(r0, 0x29, 0x14, &(0x7f0000000000)={@rand_addr="2a996420f6cb95bf0a74549b035c39ac"}, 0x14) syzkaller login: [ 51.454680][ T8026] IPVS: ftp: loaded support on port[0] = 21 [ 51.628755][ T8026] chnl_net:caif_netlink_parms(): no params data found [ 51.636622][ T8029] IPVS: ftp: loaded support on port[0] = 21 [ 51.713207][ T8026] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.736113][ T8026] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.745252][ T8026] device bridge_slave_0 entered promiscuous mode [ 51.754396][ T8026] bridge0: port 2(bridge_slave_1) entered blocking state 08:27:24 executing program 2: r0 = socket$packet(0x11, 0x3, 0x300) setrlimit(0x7, &(0x7f0000a9cff8)) accept4$packet(r0, 0x0, 0x0, 0x0) [ 51.762638][ T8026] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.770980][ T8026] device bridge_slave_1 entered promiscuous mode [ 51.817698][ T8026] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 51.847810][ T8026] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 51.948160][ T8026] team0: Port device team_slave_0 added [ 51.960905][ T8029] chnl_net:caif_netlink_parms(): no params data found [ 51.971536][ T8026] team0: Port device team_slave_1 added [ 52.002602][ T8033] IPVS: ftp: loaded support on port[0] = 21 08:27:24 executing program 3: r0 = socket$inet_dccp(0x2, 0x6, 0x0) getsockopt$inet_int(r0, 0x10d, 0x6, &(0x7f0000000140), &(0x7f00000000c0)=0x4) [ 52.091391][ T8026] device hsr_slave_0 entered promiscuous mode [ 52.168176][ T8026] device hsr_slave_1 entered promiscuous mode [ 52.219315][ T8029] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.232462][ T8029] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.242396][ T8029] device bridge_slave_0 entered promiscuous mode 08:27:24 executing program 4: recvmmsg(0xffffffffffffffff, &(0x7f0000003140)=[{{&(0x7f0000000080)=@ipx, 0x80, 0x0}}], 0x1, 0x0, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000100)='net/protocols\x00') perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) preadv(r0, &(0x7f00000017c0), 0x351, 0xb000000) [ 52.272982][ T8035] IPVS: ftp: loaded support on port[0] = 21 [ 52.287873][ T8029] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.295036][ T8029] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.304368][ T8029] device bridge_slave_1 entered promiscuous mode [ 52.376411][ T8026] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 52.419487][ T8026] netdevsim netdevsim0 netdevsim1: renamed from eth1 08:27:25 executing program 5: mkdir(&(0x7f0000000040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000280)=ANY=[@ANYBLOB="1500000065ffff0180000008003950323030302e4cc74502f987c2cec6504df6ead74ed8a60ab563e98b4b2a3d27a7082dbb78abd55fba3da80b030045ab100621d623455e1ffb5ea3544438cd89e9b08e3f5972fe9ca162b123e19268c89c9dd81c796f27f537cc5a3fb54aff8eaff4f6b59c41705b96a6711d4679079d00"/137], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff}) r4 = dup(r3) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x400200) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000140)='9p\x00', 0x0, &(0x7f0000000880)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB=',dfltgid=', @ANYBLOB=',afid=0']) [ 52.540530][ T8029] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 52.553743][ T8029] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 52.565826][ T8026] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 52.617990][ T8026] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 52.728857][ T8037] IPVS: ftp: loaded support on port[0] = 21 [ 52.743653][ T8029] team0: Port device team_slave_0 added [ 52.782810][ T8039] IPVS: ftp: loaded support on port[0] = 21 [ 52.792324][ T8029] team0: Port device team_slave_1 added [ 52.811807][ T8033] chnl_net:caif_netlink_parms(): no params data found [ 52.912442][ T8033] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.920266][ T8033] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.928375][ T8033] device bridge_slave_0 entered promiscuous mode [ 52.998869][ T8029] device hsr_slave_0 entered promiscuous mode [ 53.036505][ T8029] device hsr_slave_1 entered promiscuous mode [ 53.076263][ T8029] debugfs: Directory 'hsr0' with parent '/' already present! [ 53.084281][ T8035] chnl_net:caif_netlink_parms(): no params data found [ 53.092766][ T8033] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.100143][ T8033] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.107945][ T8033] device bridge_slave_1 entered promiscuous mode [ 53.185273][ T8033] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.233343][ T8029] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 53.289503][ T8029] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 53.347742][ T8035] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.354855][ T8035] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.363404][ T8035] device bridge_slave_0 entered promiscuous mode [ 53.371932][ T8033] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.398896][ T8029] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 53.439519][ T8035] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.447028][ T8035] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.454591][ T8035] device bridge_slave_1 entered promiscuous mode [ 53.462694][ T8037] chnl_net:caif_netlink_parms(): no params data found [ 53.473583][ T8033] team0: Port device team_slave_0 added [ 53.482191][ T8033] team0: Port device team_slave_1 added [ 53.488766][ T8029] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 53.573410][ T8026] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.619371][ T8035] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.677756][ T8033] device hsr_slave_0 entered promiscuous mode [ 53.726348][ T8033] device hsr_slave_1 entered promiscuous mode [ 53.776328][ T8033] debugfs: Directory 'hsr0' with parent '/' already present! [ 53.784004][ T8037] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.791581][ T8037] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.799801][ T8037] device bridge_slave_0 entered promiscuous mode [ 53.808943][ T8039] chnl_net:caif_netlink_parms(): no params data found [ 53.826639][ T8035] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.844839][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.853315][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.869085][ T8037] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.878427][ T8037] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.887545][ T8037] device bridge_slave_1 entered promiscuous mode [ 53.905404][ T8037] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.927390][ T8035] team0: Port device team_slave_0 added [ 53.940251][ T8037] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.960190][ T8033] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 53.998485][ T8035] team0: Port device team_slave_1 added [ 54.005637][ T8026] 8021q: adding VLAN 0 to HW filter on device team0 [ 54.025047][ T8033] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 54.058555][ T8033] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 54.121104][ T8033] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 54.157930][ T8039] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.165177][ T8039] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.173496][ T8039] device bridge_slave_0 entered promiscuous mode [ 54.181988][ T8039] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.189761][ T8039] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.197957][ T8039] device bridge_slave_1 entered promiscuous mode [ 54.207677][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 54.218982][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 54.227759][ T3145] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.235104][ T3145] bridge0: port 1(bridge_slave_0) entered forwarding state [ 54.243404][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 54.252972][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 54.261511][ T3145] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.268610][ T3145] bridge0: port 2(bridge_slave_1) entered forwarding state [ 54.277072][ T3145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 54.288479][ T8037] team0: Port device team_slave_0 added [ 54.368838][ T8035] device hsr_slave_0 entered promiscuous mode [ 54.416621][ T8035] device hsr_slave_1 entered promiscuous mode [ 54.456138][ T8035] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.464401][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 54.475202][ T8037] team0: Port device team_slave_1 added [ 54.487813][ T8039] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.503354][ T8039] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.514683][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 54.524306][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 54.533511][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 54.573749][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 54.584551][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.593746][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.658880][ T8037] device hsr_slave_0 entered promiscuous mode [ 54.676392][ T8037] device hsr_slave_1 entered promiscuous mode [ 54.716240][ T8037] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.730083][ T8026] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 54.741522][ T8026] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 54.757883][ T8039] team0: Port device team_slave_0 added [ 54.769046][ T8039] team0: Port device team_slave_1 added [ 54.785883][ T8045] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 54.798262][ T8045] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 54.808218][ T8045] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 54.816822][ T8045] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 54.825490][ T8045] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 54.842632][ T8029] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.873362][ T8035] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 54.948778][ T8035] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 54.987834][ T8035] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 55.068272][ T8039] device hsr_slave_0 entered promiscuous mode [ 55.106453][ T8039] device hsr_slave_1 entered promiscuous mode [ 55.136176][ T8039] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.160424][ T8035] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 55.223193][ T8037] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 55.288505][ T8037] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 55.359740][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.371059][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.378718][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.386606][ T8042] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.397497][ T8026] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.406565][ T8037] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 55.459105][ T8039] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 55.530405][ T8029] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.549521][ T8033] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.564495][ T8033] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.577232][ T8037] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 55.636078][ T8039] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 160.665953][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 160.672734][ C1] rcu: 1-...!: (10499 ticks this GP) idle=eca/1/0x4000000000000002 softirq=10131/10131 fqs=42 [ 160.683283][ C1] (t=10501 jiffies g=6017 q=193) [ 160.688293][ C1] rcu: rcu_preempt kthread starved for 10418 jiffies! g6017 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 160.699380][ C1] rcu: RCU grace-period kthread stack dump: [ 160.705262][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 160.713150][ C1] Call Trace: [ 160.716432][ C1] __schedule+0x9a0/0xcc0 [ 160.720753][ C1] schedule+0x181/0x210 [ 160.724893][ C1] schedule_timeout+0x14f/0x240 [ 160.729728][ C1] ? run_local_timers+0x120/0x120 [ 160.734738][ C1] rcu_gp_kthread+0xed8/0x1770 [ 160.739499][ C1] kthread+0x332/0x350 [ 160.743553][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 160.748648][ C1] ? kthread_blkcg+0xe0/0xe0 [ 160.753242][ C1] ret_from_fork+0x24/0x30 [ 160.757658][ C1] NMI backtrace for cpu 1 [ 160.761977][ C1] CPU: 1 PID: 83 Comm: kworker/u4:2 Not tainted 5.4.0-syzkaller #0 [ 160.769847][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 160.779911][ C1] Workqueue: events_unbound fsnotify_connector_destroy_workfn [ 160.787376][ C1] Call Trace: [ 160.790647][ C1] [ 160.793483][ C1] dump_stack+0x1fb/0x318 [ 160.797798][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 160.802628][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 160.808768][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 160.814831][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 160.820804][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 160.826681][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 160.831793][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 160.836977][ C1] ? trace_hardirqs_off+0x74/0x80 [ 160.841984][ C1] update_process_times+0x12d/0x180 [ 160.847171][ C1] tick_sched_timer+0x263/0x420 [ 160.852007][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 160.857536][ C1] __hrtimer_run_queues+0x403/0x840 [ 160.862732][ C1] hrtimer_interrupt+0x38c/0xda0 [ 160.867669][ C1] ? debug_smp_processor_id+0x9/0x20 [ 160.872943][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 160.878471][ C1] apic_timer_interrupt+0xf/0x20 [ 160.883388][ C1] [ 160.886310][ C1] RIP: 0010:free_thread_stack+0x151/0x590 [ 160.892008][ C1] Code: 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 [ 160.911609][ C1] RSP: 0018:ffffc90001147908 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 160.920002][ C1] RAX: 1ffff1101512f7b1 RBX: ffff8880a897bd88 RCX: 0000000000000000 [ 160.927957][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002a040c0 [ 160.935913][ C1] RBP: ffffc90001147940 R08: 000000000003a768 R09: ffffed1011a0fabf [ 160.943865][ C1] R10: ffffed1011a0fabf R11: 0000000000000000 R12: ffff8880a897be20 [ 160.951904][ C1] R13: dffffc0000000000 R14: 1ffff1101512f7c4 R15: ffff88808d07d5e8 [ 160.959876][ C1] ? free_thread_stack+0x12e/0x590 [ 160.964971][ C1] put_task_stack+0xa3/0x130 [ 160.969544][ C1] finish_task_switch+0x3f1/0x550 [ 160.974557][ C1] __schedule+0x9a8/0xcc0 [ 160.978888][ C1] ? ___preempt_schedule+0x16/0x18 [ 160.983979][ C1] preempt_schedule+0xdb/0x120 [ 160.988727][ C1] ___preempt_schedule+0x16/0x18 [ 160.993649][ C1] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 160.999262][ C1] __call_srcu+0x7ab/0xb00 [ 161.003671][ C1] __synchronize_srcu+0x1cf/0x260 [ 161.008680][ C1] ? rcu_read_lock_any_held+0x1a0/0x1a0 [ 161.014215][ C1] synchronize_srcu+0x2cb/0x2f0 [ 161.019055][ C1] fsnotify_connector_destroy_workfn+0x44/0xb0 [ 161.025188][ C1] process_one_work+0x7ef/0x10d0 [ 161.030123][ C1] worker_thread+0xc01/0x1630 [ 161.034806][ C1] kthread+0x332/0x350 [ 161.038859][ C1] ? rcu_lock_release+0x30/0x30 [ 161.043689][ C1] ? kthread_blkcg+0xe0/0xe0 [ 161.048262][ C1] ret_from_fork+0x24/0x30