[ 41.556923][ T26] audit: type=1800 audit(1575335860.490:27): pid=7959 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.593454][ T26] audit: type=1800 audit(1575335860.490:28): pid=7959 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. [ 42.143801][ T26] audit: type=1800 audit(1575335861.150:29): pid=7959 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 42.163164][ T26] audit: type=1800 audit(1575335861.150:30): pid=7959 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 '10.128.10.3' (ECDSA) to the list of known hosts. 2019/12/03 01:17:51 fuzzer started 2019/12/03 01:17:52 dialing manager at 10.128.0.26:38907 2019/12/03 01:17:52 syscalls: 2697 2019/12/03 01:17:52 code coverage: enabled 2019/12/03 01:17:52 comparison tracing: enabled 2019/12/03 01:17:52 extra coverage: extra coverage is not supported by the kernel 2019/12/03 01:17:52 setuid sandbox: enabled 2019/12/03 01:17:52 namespace sandbox: enabled 2019/12/03 01:17:52 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 01:17:52 fault injection: enabled 2019/12/03 01:17:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 01:17:52 net packet injection: enabled 2019/12/03 01:17:52 net device setup: enabled 2019/12/03 01:17:52 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 01:17:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 01:17:54 executing program 0: r0 = openat$tun(0xffffffffffffff9c, &(0x7f00000002c0)='/dev/net/tun\x00', 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000000)={'i\x00\x00\"\x00\x00\x00\x00\xa2\xccb\x0eaR\xd1\xab', 0x43732e5398416f1a}) ioctl$TUNSETTXFILTER(r0, 0x400454d1, &(0x7f0000000040)) 01:17:54 executing program 1: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) clone3(&(0x7f0000000280)={0x0, 0x0, &(0x7f00000000c0), 0x0, 0x0, 0x0, &(0x7f0000003300)=""/4086, 0x858, 0x0, 0x0}, 0x34e) syzkaller login: [ 55.212259][ T8124] IPVS: ftp: loaded support on port[0] = 21 01:17:54 executing program 2: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$packet(0x11, 0x20000000000003, 0x300) setsockopt$packet_drop_memb(r0, 0x107, 0x2, &(0x7f0000000000)={0x0, 0x1, 0x6}, 0x10) [ 55.360457][ T8126] IPVS: ftp: loaded support on port[0] = 21 [ 55.378584][ T8124] chnl_net:caif_netlink_parms(): no params data found [ 55.496236][ T8124] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.505350][ T8124] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.513677][ T8124] device bridge_slave_0 entered promiscuous mode [ 55.522991][ T8124] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.530322][ T8124] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.538942][ T8124] device bridge_slave_1 entered promiscuous mode [ 55.556526][ T8129] IPVS: ftp: loaded support on port[0] = 21 [ 55.600635][ T8124] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.613458][ T8124] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.651922][ T8126] chnl_net:caif_netlink_parms(): no params data found [ 55.677266][ T8124] team0: Port device team_slave_0 added [ 55.689366][ T8124] team0: Port device team_slave_1 added 01:17:54 executing program 3: r0 = socket$inet(0x10, 0x3, 0x0) sendmsg(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)=[{&(0x7f00000001c0)="2400000019000755a84a5bd02310a000020000001f00000000000100050012fb0400ff7e", 0x24}], 0x1}, 0x0) [ 55.724688][ T8126] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.742694][ T8126] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.750584][ T8126] device bridge_slave_0 entered promiscuous mode [ 55.815430][ T8124] device hsr_slave_0 entered promiscuous mode [ 55.852906][ T8124] device hsr_slave_1 entered promiscuous mode [ 55.903641][ T8126] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.910715][ T8126] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.934568][ T8126] device bridge_slave_1 entered promiscuous mode 01:17:55 executing program 4: sendmsg$nl_netfilter(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000080)={0x0}}, 0x0) writev(0xffffffffffffffff, &(0x7f0000000080)=[{&(0x7f00000000c0)="390000001000090468fe07002b0000000100ff0714000000450001070300001419001a00", 0x24}], 0x1) r0 = socket(0x10, 0x3, 0x0) write(0xffffffffffffffff, &(0x7f00000000c0)="240000001a005f0014f9f407000904000a000000000000000000000008000100", 0x20) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = fcntl$dupfd(r1, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) sendmmsg$alg(r0, &(0x7f0000000140), 0xcc, 0x0) [ 55.984219][ T8126] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.994859][ T8132] IPVS: ftp: loaded support on port[0] = 21 [ 56.022424][ T8126] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.057077][ T8129] chnl_net:caif_netlink_parms(): no params data found [ 56.138857][ T8124] netdevsim netdevsim0 netdevsim0: renamed from eth0 01:17:55 executing program 5: r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000100)='/dev/uinput\x00', 0x0, 0x0) unshare(0x400) ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0) [ 56.227915][ T8124] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.286996][ T8124] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.336187][ T8126] team0: Port device team_slave_0 added [ 56.364938][ T8135] IPVS: ftp: loaded support on port[0] = 21 [ 56.379517][ T8124] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.435711][ T8126] team0: Port device team_slave_1 added [ 56.459875][ T8137] IPVS: ftp: loaded support on port[0] = 21 [ 56.476540][ T8129] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.484642][ T8129] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.492354][ T8129] device bridge_slave_0 entered promiscuous mode [ 56.504601][ T8129] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.511662][ T8129] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.519326][ T8129] device bridge_slave_1 entered promiscuous mode [ 56.605262][ T8126] device hsr_slave_0 entered promiscuous mode [ 56.663068][ T8126] device hsr_slave_1 entered promiscuous mode [ 56.712746][ T8126] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.733741][ T8129] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.748569][ T8129] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.806446][ T8132] chnl_net:caif_netlink_parms(): no params data found [ 56.828340][ T8129] team0: Port device team_slave_0 added [ 56.850892][ T8129] team0: Port device team_slave_1 added [ 56.878222][ T8132] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.885894][ T8132] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.894046][ T8132] device bridge_slave_0 entered promiscuous mode [ 56.901178][ T8126] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.955854][ T8126] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.015529][ T8126] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.102125][ T8132] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.109531][ T8132] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.117539][ T8132] device bridge_slave_1 entered promiscuous mode [ 57.132030][ T8126] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.187492][ T8124] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.213484][ T8132] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.226679][ T8132] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.295054][ T8129] device hsr_slave_0 entered promiscuous mode [ 57.343024][ T8129] device hsr_slave_1 entered promiscuous mode [ 57.382696][ T8129] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.435302][ T8137] chnl_net:caif_netlink_parms(): no params data found [ 57.450103][ T8135] chnl_net:caif_netlink_parms(): no params data found [ 57.492827][ T8132] team0: Port device team_slave_0 added [ 57.500711][ T8132] team0: Port device team_slave_1 added [ 57.514251][ T8135] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.521335][ T8135] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.530198][ T8135] device bridge_slave_0 entered promiscuous mode [ 57.541314][ T8135] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.548495][ T8135] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.556539][ T8135] device bridge_slave_1 entered promiscuous mode [ 57.571735][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.580265][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.590324][ T8124] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.631598][ T8137] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.640127][ T8137] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.647876][ T8137] device bridge_slave_0 entered promiscuous mode [ 57.656610][ T8129] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.709128][ T8129] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.814266][ T8132] device hsr_slave_0 entered promiscuous mode [ 57.872994][ T8132] device hsr_slave_1 entered promiscuous mode [ 57.912742][ T8132] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.921392][ T8137] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.929419][ T8137] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.937709][ T8137] device bridge_slave_1 entered promiscuous mode [ 57.961143][ T8135] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.971945][ T8129] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.004537][ T8129] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.055092][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.064366][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.073337][ T2706] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.080555][ T2706] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.088708][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.098182][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.106597][ T2706] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.113769][ T2706] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.121220][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.130827][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.140350][ T8137] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.151249][ T8135] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.188972][ T8137] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.214957][ T8135] team0: Port device team_slave_0 added [ 58.221538][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.230722][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.239345][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.247670][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.256896][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.266583][ T8138] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.275103][ T8132] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.324298][ T8132] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.368361][ T8132] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.418532][ T8132] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.476416][ T8135] team0: Port device team_slave_1 added [ 58.492446][ T8124] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.503559][ T8124] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.519946][ T8126] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.536775][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.546353][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.555558][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.564081][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.573001][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.585062][ T8137] team0: Port device team_slave_0 added [ 58.592059][ T8137] team0: Port device team_slave_1 added [ 58.654338][ T8135] device hsr_slave_0 entered promiscuous mode [ 58.712990][ T8135] device hsr_slave_1 entered promiscuous mode [ 58.762791][ T8135] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.825872][ T8137] device hsr_slave_0 entered promiscuous mode [ 58.893135][ T8137] device hsr_slave_1 entered promiscuous mode [ 58.932679][ T8137] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.965743][ T8126] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.975323][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.986223][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.994529][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.001914][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.019546][ T8124] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.053179][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.061785][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.070719][ T2706] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.077809][ T2706] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.085542][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.094482][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.102870][ T2706] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.109904][ T2706] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.117697][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.126135][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.154640][ T8137] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.195408][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.207292][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.218159][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.226929][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.236351][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.244972][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.253742][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.261841][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.270379][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.279167][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.288128][ T8137] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.344786][ T8135] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.395503][ T8135] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 164.422530][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 164.429740][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8144 [ 164.437185][ C1] (detected by 1, t=10503 jiffies, g=6001, q=219) [ 164.443848][ C1] syz-executor.0 R running task 27888 8144 8124 0x0000400e [ 164.451744][ C1] Call Trace: [ 164.455018][ C1] [ 164.458044][ C1] sched_show_task+0x40f/0x560 [ 164.463760][ C1] rcu_sched_clock_irq+0x16b1/0x1ad0 [ 164.469043][ C1] update_process_times+0x12d/0x180 [ 164.474246][ C1] tick_sched_timer+0x263/0x420 [ 164.479083][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.484618][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.490909][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.495850][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.501127][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.506664][ C1] apic_timer_interrupt+0xf/0x20 [ 164.511581][ C1] [ 164.514515][ C1] RIP: 0010:free_thread_stack+0x151/0x590 [ 164.520310][ 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 [ 164.540072][ C1] RSP: 0018:ffffc900023974b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.548559][ C1] RAX: 1ffff11014964811 RBX: ffff8880a4b24088 RCX: 0000000000000000 [ 164.556542][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002895c40 [ 164.564506][ C1] RBP: ffffc900023974e8 R08: 000000000003a768 R09: ffffed1014bff6cf [ 164.572577][ C1] R10: ffffed1014bff6cf R11: 0000000000000000 R12: ffff8880a4b24120 [ 164.580554][ C1] R13: dffffc0000000000 R14: 1ffff11014964824 R15: ffff8880a5ffb668 [ 164.588555][ C1] put_task_stack+0xa3/0x130 [ 164.593138][ C1] finish_task_switch+0x3f1/0x550 [ 164.598246][ C1] __schedule+0x9a8/0xcc0 [ 164.602585][ C1] ? ___preempt_schedule_notrace+0x16/0x27 [ 164.608395][ C1] preempt_schedule_notrace+0xdb/0x120 [ 164.613994][ C1] ___preempt_schedule_notrace+0x16/0x27 [ 164.620070][ C1] ? rcu_is_watching+0x57/0xa0 [ 164.624824][ C1] rcu_is_watching+0x82/0xa0 [ 164.629402][ C1] memcg_kmem_get_cache+0x301/0x590 [ 164.634605][ C1] ? __should_failslab+0x11a/0x160 [ 164.639793][ C1] ? proc_alloc_inode+0x1f/0xe0 [ 164.644655][ C1] kmem_cache_alloc+0x86/0x2e0 [ 164.649522][ C1] ? init_once+0x20/0x20 [ 164.653758][ C1] proc_alloc_inode+0x1f/0xe0 [ 164.658440][ C1] ? init_once+0x20/0x20 [ 164.662683][ C1] new_inode_pseudo+0x68/0x240 [ 164.667441][ C1] new_inode+0x28/0x1c0 [ 164.671614][ C1] proc_pid_make_inode+0x27/0x1d0 [ 164.676631][ C1] proc_pid_instantiate+0x4f/0x1a0 [ 164.681740][ C1] proc_pid_lookup+0x21f/0x300 [ 164.686494][ C1] proc_root_lookup+0x22/0x50 [ 164.691259][ C1] __lookup_slow+0x285/0x380 [ 164.701678][ C1] walk_component+0x2d6/0x7b0 [ 164.706347][ C1] ? inode_permission+0xe0/0x520 [ 164.711272][ C1] link_path_walk+0x75b/0x1410 [ 164.716036][ C1] path_openat+0x139/0x44a0 [ 164.720527][ C1] ? __kasan_kmalloc+0x178/0x1b0 [ 164.725580][ C1] ? rcu_read_lock_sched_held+0x10b/0x170 [ 164.731309][ C1] do_filp_open+0x192/0x3d0 [ 164.735815][ C1] ? noop_direct_IO+0x20/0x20 [ 164.740489][ C1] do_sys_open+0x29f/0x560 [ 164.744895][ C1] __x64_sys_open+0x87/0x90 [ 164.749391][ C1] do_syscall_64+0xf7/0x1c0 [ 164.753972][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 164.759849][ C1] RIP: 0033:0x4143f0 [ 164.763905][ C1] Code: 05 48 3d 01 f0 ff ff 0f 83 2d 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 7d 40 66 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff [ 164.783494][ C1] RSP: 002b:00007ffd53411ca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 164.791888][ C1] RAX: ffffffffffffffda RBX: 00007ffd53411cd4 RCX: 00000000004143f0 [ 164.799874][ C1] RDX: 00007ffd53411cda RSI: 0000000000080001 RDI: 00000000004c00fb [ 164.807835][ C1] RBP: 00007ffd53411cd0 R08: 0000000000000000 R09: 0000000000000004 [ 164.815804][ C1] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004c00fb [ 164.823788][ C1] R13: 00007ffd534121f0 R14: 0000000000000000 R15: 00007ffd53412200 [ 164.832027][ C1] rcu: rcu_preempt kthread starved for 4965 jiffies! g6001 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 164.843036][ C1] rcu: RCU grace-period kthread stack dump: [ 164.849342][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 164.857311][ C1] Call Trace: [ 164.860593][ C1] __schedule+0x9a0/0xcc0 [ 164.864920][ C1] schedule+0x181/0x210 [ 164.869063][ C1] schedule_timeout+0x14f/0x240 [ 164.873899][ C1] ? run_local_timers+0x120/0x120 [ 164.878916][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.883766][ C1] kthread+0x332/0x350 [ 164.887826][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.892926][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.897503][ C1] ret_from_fork+0x24/0x30