[ 40.090266][ T25] audit: type=1800 audit(1575373673.800:27): pid=7930 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 40.113585][ T25] audit: type=1800 audit(1575373673.810:28): pid=7930 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. [ 40.560691][ T25] audit: type=1800 audit(1575373674.350:29): pid=7930 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 40.580331][ T25] audit: type=1800 audit(1575373674.350:30): pid=7930 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 '10.128.10.29' (ECDSA) to the list of known hosts. 2019/12/03 11:48:05 fuzzer started 2019/12/03 11:48:06 dialing manager at 10.128.0.26:45711 2019/12/03 11:48:11 syscalls: 2689 2019/12/03 11:48:11 code coverage: enabled 2019/12/03 11:48:11 comparison tracing: enabled 2019/12/03 11:48:11 extra coverage: extra coverage is not supported by the kernel 2019/12/03 11:48:11 setuid sandbox: enabled 2019/12/03 11:48:11 namespace sandbox: enabled 2019/12/03 11:48:11 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 11:48:11 fault injection: enabled 2019/12/03 11:48:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 11:48:11 net packet injection: enabled 2019/12/03 11:48:11 net device setup: enabled 2019/12/03 11:48:11 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 11:48:11 devlink PCI setup: PCI device 0000:00:10.0 is not available 11:48:12 executing program 0: mkdir(&(0x7f0000000040)='./file0\x00', 0x0) mount(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000280)='devtmpfs\x00', 0x0, 0x0) utimes(&(0x7f0000000100)='./file0\x00', 0x0) 11:48:12 executing program 1: r0 = socket$inet6(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2, 0x6}, 0x1c) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000002c0)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = fcntl$dupfd(r2, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) setsockopt$inet6_int(r0, 0x29, 0x3c, &(0x7f0000000040)=0x400000000008000, 0x4) setsockopt$inet6_int(r0, 0x29, 0x3e, &(0x7f0000000500)=0x3, 0xc7) sendmmsg(r0, &(0x7f0000000240)=[{{0x0, 0xfffffd73, &(0x7f0000000100), 0x2bc}}, {{0x0, 0x360, &(0x7f0000000140), 0x55f, &(0x7f0000000140)}}], 0x40007aa, 0x0) setsockopt$sock_int(r0, 0x1, 0x29, &(0x7f0000000080)=0x6, 0x4) recvmsg(r0, &(0x7f0000000180)={0x0, 0x23f, 0x0}, 0x0) syzkaller login: [ 58.967693][ T8093] IPVS: ftp: loaded support on port[0] = 21 [ 59.071613][ T8095] IPVS: ftp: loaded support on port[0] = 21 11:48:12 executing program 2: r0 = syz_open_dev$sndctrl(&(0x7f00000000c0)='/dev/snd/controlC#\x00', 0x0, 0x0) ioctl$SNDRV_CTL_IOCTL_PVERSION(r0, 0xc1105517, 0x0) [ 59.138986][ T8093] chnl_net:caif_netlink_parms(): no params data found [ 59.243143][ T8093] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.260345][ T8093] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.269035][ T8093] device bridge_slave_0 entered promiscuous mode [ 59.298340][ T8095] chnl_net:caif_netlink_parms(): no params data found [ 59.322447][ T8093] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.329526][ T8093] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.350853][ T8093] device bridge_slave_1 entered promiscuous mode [ 59.392076][ T8093] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.417746][ T8093] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.432272][ T8099] IPVS: ftp: loaded support on port[0] = 21 [ 59.449068][ T8095] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.459437][ T8095] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.467908][ T8095] device bridge_slave_0 entered promiscuous mode [ 59.479690][ T8095] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.488058][ T8095] bridge0: port 2(bridge_slave_1) entered disabled state 11:48:13 executing program 3: r0 = openat$vicodec0(0xffffffffffffff9c, &(0x7f0000000040)='/dev/video36\x00', 0x2, 0x0) ioctl$VIDIOC_DQBUF(r0, 0xc0585611, &(0x7f0000000080)={0x0, 0x1, 0x4, 0x0, {0x0, 0x7530}, {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, "85f5a58f"}, 0x0, 0x0, @userptr, 0x4}) [ 59.496389][ T8095] device bridge_slave_1 entered promiscuous mode [ 59.509126][ T8093] team0: Port device team_slave_0 added [ 59.521831][ T8093] team0: Port device team_slave_1 added [ 59.623269][ T8095] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.682924][ T8093] device hsr_slave_0 entered promiscuous mode 11:48:13 executing program 4: r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000400)='cpuacct.usage\xaf\xf5_al\xb5s\xd1+H\x9a\xbd2>\x86\x02\x00\x00\x00', 0xf0, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000000)={0xffffffffffffffff}) setsockopt$sock_attach_bpf(r1, 0x1, 0x32, &(0x7f0000000040)=r0, 0x4) [ 59.750658][ T8093] device hsr_slave_1 entered promiscuous mode [ 59.832166][ T8095] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.911475][ T8101] IPVS: ftp: loaded support on port[0] = 21 [ 59.913383][ T8095] team0: Port device team_slave_0 added [ 59.942666][ T8095] team0: Port device team_slave_1 added 11:48:13 executing program 5: r0 = syz_open_dev$sndseq(&(0x7f0000ce9ff3)='/dev/snd/seq\x00', 0x0, 0x0) openat$sequencer2(0xffffffffffffff9c, &(0x7f0000e26000)='/dev/sequencer2\x00', 0x0, 0x0) ioctl$SNDRV_SEQ_IOCTL_SET_QUEUE_CLIENT(r0, 0x404c534a, &(0x7f0000642fb4)={0x0, 0x0, 0x10001, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfdfd]}) [ 59.990866][ T8099] chnl_net:caif_netlink_parms(): no params data found [ 60.018556][ T8103] IPVS: ftp: loaded support on port[0] = 21 [ 60.052640][ T8095] device hsr_slave_0 entered promiscuous mode [ 60.102274][ T8095] device hsr_slave_1 entered promiscuous mode [ 60.140672][ T8095] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.148483][ T8093] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 60.224490][ T8093] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 60.275250][ T8093] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 60.324036][ T8093] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 60.382701][ T8106] IPVS: ftp: loaded support on port[0] = 21 [ 60.459171][ T8095] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.507512][ T8099] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.514828][ T8099] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.523428][ T8099] device bridge_slave_0 entered promiscuous mode [ 60.533095][ T8099] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.540435][ T8099] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.547985][ T8099] device bridge_slave_1 entered promiscuous mode [ 60.561149][ T8095] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.605519][ T8095] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.662492][ T8095] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.732217][ T8099] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.764108][ T8099] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.846164][ T8099] team0: Port device team_slave_0 added [ 60.856664][ T8099] team0: Port device team_slave_1 added [ 60.962257][ T8099] device hsr_slave_0 entered promiscuous mode [ 61.000704][ T8099] device hsr_slave_1 entered promiscuous mode [ 61.030372][ T8099] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.065671][ T8101] chnl_net:caif_netlink_parms(): no params data found [ 61.079855][ T8103] chnl_net:caif_netlink_parms(): no params data found [ 61.096255][ T8095] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.119991][ T8093] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.134614][ T8106] chnl_net:caif_netlink_parms(): no params data found [ 61.167972][ T8099] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.226327][ T8099] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.272112][ T8101] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.279559][ T8101] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.288272][ T8101] device bridge_slave_0 entered promiscuous mode [ 61.300109][ T8101] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.308885][ T8101] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.317129][ T8101] device bridge_slave_1 entered promiscuous mode [ 61.338531][ T8099] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.408121][ T8103] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.415721][ T8103] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.423946][ T8103] device bridge_slave_0 entered promiscuous mode [ 61.432777][ T8103] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.439839][ T8103] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.448490][ T8103] device bridge_slave_1 entered promiscuous mode [ 61.457161][ T8101] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.467933][ T8101] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.477429][ T8099] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.536078][ T8095] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.545774][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.554229][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.563316][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.571738][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.591442][ T8093] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.614215][ T8106] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.621723][ T8106] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.629443][ T8106] device bridge_slave_0 entered promiscuous mode [ 61.647690][ T8101] team0: Port device team_slave_0 added [ 61.656161][ T8101] team0: Port device team_slave_1 added [ 61.668298][ T8103] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.677771][ T8106] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.685404][ T8106] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.693329][ T8106] device bridge_slave_1 entered promiscuous mode [ 61.752360][ T8101] device hsr_slave_0 entered promiscuous mode [ 61.800783][ T8101] device hsr_slave_1 entered promiscuous mode [ 61.840391][ T8101] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.849254][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.858654][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.867181][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.874339][ T8108] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.882341][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.891354][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.899633][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.906714][ T8108] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.915367][ T8103] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.955518][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.966193][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.974774][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.983922][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.993144][ T8108] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.000243][ T8108] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.007999][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.016974][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.025689][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.034088][ T8108] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.041154][ T8108] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.048740][ T8108] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.074207][ T8106] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.089180][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.098597][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.119565][ T8093] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.130192][ T8093] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.147684][ T8103] team0: Port device team_slave_0 added [ 62.159230][ T8106] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.175312][ T8095] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.190264][ T8095] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.209339][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.219307][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.228280][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.237131][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.246233][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.254957][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.263449][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.272236][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.281029][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.289760][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.301545][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.309945][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.318928][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.327606][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.336052][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.344786][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.366288][ T8103] team0: Port device team_slave_1 added [ 62.388507][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.401106][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.408774][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.419645][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.456667][ T8093] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.465714][ T8106] team0: Port device team_slave_0 added [ 62.476659][ T8106] team0: Port device team_slave_1 added [ 62.483354][ T8101] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.574436][ T8103] device hsr_slave_0 entered promiscuous mode [ 62.631075][ T8103] device hsr_slave_1 entered promiscuous mode [ 62.690402][ T8103] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.699676][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.707370][ T3841] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.728470][ T8095] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.753100][ T8101] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 62.775320][ T8101] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 62.833861][ T8101] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.902228][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.909711][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.963153][ T8106] device hsr_slave_0 entered promiscuous mode [ 63.010593][ T8106] device hsr_slave_1 entered promiscuous mode [ 63.060454][ T8106] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.124950][ T8099] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.170708][ T8106] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 168.170150][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 168.177127][ C1] (detected by 1, t=10502 jiffies, g=5893, q=163) [ 168.183615][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294953969-4294943467), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 168.196995][ C1] udevd R running task 27752 7735 4080 0x0000400a [ 168.204901][ C1] Call Trace: [ 168.208179][ C1] [ 168.211030][ C1] sched_show_task+0x40f/0x560 [ 168.215792][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 168.221072][ C1] update_process_times+0x12d/0x180 [ 168.226262][ C1] tick_sched_timer+0x263/0x420 [ 168.231098][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.236632][ C1] __hrtimer_run_queues+0x403/0x840 [ 168.241829][ C1] hrtimer_interrupt+0x38c/0xda0 [ 168.246765][ C1] ? debug_smp_processor_id+0x9/0x20 [ 168.252039][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 168.257574][ C1] apic_timer_interrupt+0xf/0x20 [ 168.262490][ C1] [ 168.265418][ C1] RIP: 0010:free_thread_stack+0x195/0x590 [ 168.271120][ C1] Code: 2e 00 74 08 4c 89 e7 e8 09 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 eb a3 69 00 <48> 8b 1b e9 82 ff ff ff e8 de 2c 2e 00 43 80 3c 2e 00 75 18 eb 1e [ 168.290711][ C1] RSP: 0018:ffffc90006a97b78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.299106][ C1] RAX: 1ffff110126e0031 RBX: ffff888093700188 RCX: ffff888096916280 [ 168.307062][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002a45600 [ 168.315019][ C1] RBP: ffffc90006a97bb0 R08: dffffc0000000000 R09: fffffbfff120248a [ 168.322974][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888093700220 [ 168.330934][ C1] R13: dffffc0000000000 R14: 1ffff110126e0044 R15: ffff8880a8ff79e8 [ 168.338908][ C1] ? free_thread_stack+0x168/0x590 [ 168.344008][ C1] put_task_stack+0xa3/0x130 [ 168.348582][ C1] finish_task_switch+0x3f1/0x550 [ 168.353596][ C1] __schedule+0x9a8/0xcc0 [ 168.357917][ C1] preempt_schedule_irq+0xc1/0x140 [ 168.363016][ C1] retint_kernel+0x1b/0x2b [ 168.367420][ C1] RIP: 0010:kmem_cache_alloc+0x1a8/0x2e0 [ 168.373044][ C1] Code: 8b 7d d0 57 9d 0f 1f 44 00 00 e8 83 b1 ca ff eb 1e e8 1c af ca ff 48 83 3d 7c 10 59 07 00 0f 84 33 01 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 41 0f 18 0e e9 21 00 00 00 89 d8 c1 e8 08 83 e0 01 [ 168.392803][ C1] RSP: 0018:ffffc90006a97dc8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 168.401200][ C1] RAX: ffff888096916b14 RBX: 0000000000000cc0 RCX: ffff888096916280 [ 168.409154][ C1] RDX: 0000000000000000 RSI: ffffffff81be59ca RDI: 0000000000000286 [ 168.417110][ C1] RBP: ffffc90006a97e00 R08: ffff888096916ad8 R09: ffffed101553fdc1 [ 168.425072][ C1] R10: ffffed101553fdc1 R11: 0000000000000000 R12: ffff8880aa9faa80 [ 168.433029][ C1] R13: ffff8880aa9faa80 R14: ffff88806c200a40 R15: 0000000000000cc0 [ 168.440997][ C1] ? getname_flags+0xba/0x640 [ 168.445660][ C1] ? getname_flags+0xba/0x640 [ 168.450324][ C1] getname_flags+0xba/0x640 [ 168.454814][ C1] getname+0x19/0x20 [ 168.458694][ C1] do_sys_open+0x261/0x560 [ 168.463101][ C1] __x64_sys_open+0x87/0x90 [ 168.467773][ C1] do_syscall_64+0xf7/0x1c0 [ 168.472263][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.478158][ C1] RIP: 0033:0x7fb4944ff120 [ 168.482584][ C1] Code: 48 8b 15 1b 4d 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 83 3d d5 a4 2b 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e 8c 01 00 48 89 04 24 [ 168.502192][ C1] RSP: 002b:00007ffc5369da08 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 168.510605][ C1] RAX: ffffffffffffffda RBX: 000000000185f650 RCX: 00007fb4944ff120 [ 168.518579][ C1] RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffc5369dae0 [ 168.526557][ C1] RBP: 00007ffc5369da80 R08: 0000000000000008 R09: 0000000000000001 [ 168.534528][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 168.542494][ C1] R13: 000000000041f57a R14: 0000000000000000 R15: 000000000000000b [ 168.550480][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g5893 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 168.561568][ C1] rcu: RCU grace-period kthread stack dump: [ 168.567459][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 168.575365][ C1] Call Trace: [ 168.578663][ C1] __schedule+0x9a0/0xcc0 [ 168.582993][ C1] schedule+0x181/0x210 [ 168.587151][ C1] schedule_timeout+0x14f/0x240 [ 168.591992][ C1] ? run_local_timers+0x120/0x120 [ 168.597020][ C1] rcu_gp_kthread+0xed8/0x1770 [ 168.601791][ C1] kthread+0x332/0x350 [ 168.605850][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 168.610961][ C1] ? kthread_blkcg+0xe0/0xe0 [ 168.615559][ C1] ret_from_fork+0x24/0x30