[ 49.442563][ T23] audit: type=1800 audit(1575449689.290:26): pid=8235 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 49.464116][ T23] audit: type=1800 audit(1575449689.290:27): pid=8235 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 49.509392][ T23] audit: type=1800 audit(1575449689.290:28): pid=8235 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. [ 50.071173][ T23] audit: type=1800 audit(1575449689.940:29): pid=8235 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 '10.128.0.198' (ECDSA) to the list of known hosts. 2019/12/04 08:55:00 fuzzer started 2019/12/04 08:55:01 dialing manager at 10.128.0.26:36481 2019/12/04 08:55:01 syscalls: 2691 2019/12/04 08:55:01 code coverage: enabled 2019/12/04 08:55:01 comparison tracing: enabled 2019/12/04 08:55:01 extra coverage: extra coverage is not supported by the kernel 2019/12/04 08:55:01 setuid sandbox: enabled 2019/12/04 08:55:01 namespace sandbox: enabled 2019/12/04 08:55:01 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 08:55:01 fault injection: enabled 2019/12/04 08:55:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 08:55:01 net packet injection: enabled 2019/12/04 08:55:01 net device setup: enabled 2019/12/04 08:55:01 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 08:55:01 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:55:02 executing program 0: r0 = syz_open_procfs(0x0, &(0x7f0000000040)='oom_score_adj\x00') preadv(r0, &(0x7f0000000040), 0x1, 0x0) 08:55:02 executing program 1: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = socket$kcm(0x10, 0x800000000002, 0x0) sendmsg$kcm(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000180)=[{&(0x7f00000000c0)="2e000000120081aee4520cecff0e00fa078b5bdb4cb904e473730e55cff26d1b0e000980360000005e510befccd7", 0x2e}], 0x1}, 0x0) syzkaller login: [ 62.760448][ T8397] IPVS: ftp: loaded support on port[0] = 21 [ 62.913551][ T8397] chnl_net:caif_netlink_parms(): no params data found [ 62.955211][ T8397] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.963232][ T8397] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.974952][ T8397] device bridge_slave_0 entered promiscuous mode [ 62.984975][ T8397] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.992160][ T8397] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.001035][ T8397] device bridge_slave_1 entered promiscuous mode 08:55:02 executing program 2: r0 = memfd_create(&(0x7f0000000300)='\x00\xb3y\xb1\xc4\xc5)\xa3\xc6\x9cjuu\xa1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00', 0x0) r1 = syz_open_dev$sndseq(&(0x7f0000000680)='/dev/snd/seq\x00', 0x0, 0x20a81) r2 = dup2(r1, r0) ioctl$SNDRV_SEQ_IOCTL_CREATE_QUEUE(r2, 0xc08c5332, &(0x7f00000000c0)={0x0, 0x0, 0x0, 'queue0\x00\x00\x00\x00\x00\xee \x83\xd8\xc6\x93\xc4\x98\x00'}) recvmsg$can_raw(0xffffffffffffffff, &(0x7f0000000340)={&(0x7f0000000440)=@rxrpc=@in4={0x21, 0x0, 0x2, 0x10, {0x2, 0x0, @broadcast}}, 0x80, &(0x7f00000009c0)}, 0x0) write$P9_RLINK(r2, &(0x7f0000000280)={0x7}, 0x269) ioctl$SNDRV_SEQ_IOCTL_REMOVE_EVENTS(r2, 0x4040534e, &(0x7f0000000040)={0x100000306}) [ 63.031117][ T8397] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.065425][ T8397] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.098962][ T8400] IPVS: ftp: loaded support on port[0] = 21 [ 63.104010][ T8397] team0: Port device team_slave_0 added [ 63.149030][ T8397] team0: Port device team_slave_1 added 08:55:03 executing program 3: r0 = creat(&(0x7f00000000c0)='./file0\x00', 0x0) write$cgroup_type(r0, &(0x7f0000000180)='threaded\x00', 0x2d1ee37) unlink(&(0x7f0000000040)='./file0\x00') creat(&(0x7f0000000000)='./bus\x00', 0x0) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = dup2(r1, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) listxattr(&(0x7f0000000080)='./bus\x00', &(0x7f0000000100)=""/60, 0x3c) [ 63.276833][ T8397] device hsr_slave_0 entered promiscuous mode [ 63.354847][ T8397] device hsr_slave_1 entered promiscuous mode [ 63.445618][ T8402] IPVS: ftp: loaded support on port[0] = 21 08:55:03 executing program 4: 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, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xfffffbffffffffff, 0xffffffffffffffff, 0x0) syz_open_procfs(0xffffffffffffffff, &(0x7f0000000000)='children\x00') r0 = syz_open_procfs(0xffffffffffffffff, 0x0) connect$l2tp(r0, 0x0, 0xfffffffffffffe42) r1 = open(&(0x7f0000000000)='./bus\x00', 0x141042, 0x0) r2 = socket$alg(0x26, 0x5, 0x0) write$P9_RWALK(r1, &(0x7f0000000300)=ANY=[@ANYRESHEX=r2], 0x12) perf_event_open(&(0x7f0000000180)={0x6, 0x70, 0x0, 0x0, 0x0, 0x0, 0xfffffff6}, 0x0, 0x0, 0xffffffffffffffff, 0x0) write$nbd(0xffffffffffffffff, 0x0, 0x0) r3 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) mmap(&(0x7f0000003000/0x2000)=nil, 0x2000, 0x0, 0x1012, r3, 0x0) r4 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x600000)=nil, 0x600000, 0xb, 0x12, r4, 0x0) dup2(r3, 0xffffffffffffffff) socket$inet(0x2, 0x1, 0x0) [ 63.542656][ T8404] IPVS: ftp: loaded support on port[0] = 21 [ 63.557439][ T8397] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.629439][ T8397] netdevsim netdevsim0 netdevsim1: renamed from eth1 08:55:03 executing program 5: syz_open_dev$evdev(&(0x7f00000002c0)='/dev/input/event#\x00', 0x0, 0x0) r0 = syz_open_dev$evdev(0x0, 0x0, 0x0) ioctl$EVIOCGRAB(r0, 0x40044590, &(0x7f0000000200)) r1 = syz_open_dev$evdev(0x0, 0x0, 0x0) ioctl$EVIOCGRAB(r1, 0x40044590, &(0x7f0000000200)) [ 63.707584][ T8397] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.801191][ T8407] IPVS: ftp: loaded support on port[0] = 21 [ 63.817394][ T8397] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.866054][ T8400] chnl_net:caif_netlink_parms(): no params data found [ 63.922714][ T8397] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.930036][ T8397] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.938164][ T8397] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.945278][ T8397] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.954193][ T8409] IPVS: ftp: loaded support on port[0] = 21 [ 63.979585][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.988578][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.051850][ T8400] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.060712][ T8400] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.068770][ T8400] device bridge_slave_0 entered promiscuous mode [ 64.077132][ T8400] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.085541][ T8400] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.093340][ T8400] device bridge_slave_1 entered promiscuous mode [ 64.147182][ T8400] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.181354][ T8402] chnl_net:caif_netlink_parms(): no params data found [ 64.194764][ T8400] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.219083][ T8400] team0: Port device team_slave_0 added [ 64.248463][ T8400] team0: Port device team_slave_1 added [ 64.286110][ T8404] chnl_net:caif_netlink_parms(): no params data found [ 64.335651][ T8400] device hsr_slave_0 entered promiscuous mode [ 64.373926][ T8400] device hsr_slave_1 entered promiscuous mode [ 64.413689][ T8400] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.421693][ T8402] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.429743][ T8402] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.438250][ T8402] device bridge_slave_0 entered promiscuous mode [ 64.446124][ T8402] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.453188][ T8402] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.461041][ T8402] device bridge_slave_1 entered promiscuous mode [ 64.518656][ T8407] chnl_net:caif_netlink_parms(): no params data found [ 64.546792][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.555441][ T8404] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.563100][ T8404] device bridge_slave_0 entered promiscuous mode [ 64.572784][ T8404] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.579969][ T8404] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.587746][ T8404] device bridge_slave_1 entered promiscuous mode [ 64.599566][ T8402] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.623703][ T8397] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.661642][ T8402] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.707607][ T8404] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.716934][ T8407] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.724929][ T8407] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.732687][ T8407] device bridge_slave_0 entered promiscuous mode [ 64.761096][ T3138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.772144][ T3138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.782071][ T8397] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.789224][ T8409] chnl_net:caif_netlink_parms(): no params data found [ 64.801022][ T8404] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.811462][ T8407] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.819229][ T8407] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.827184][ T8407] device bridge_slave_1 entered promiscuous mode [ 64.834851][ T8400] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 64.875842][ T8400] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 64.917781][ T8402] team0: Port device team_slave_0 added [ 64.931729][ T8402] team0: Port device team_slave_1 added [ 64.957007][ T8400] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 65.018450][ T8404] team0: Port device team_slave_0 added [ 65.027143][ T3138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.037424][ T3138] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.045986][ T3138] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.053568][ T3138] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.061837][ T8400] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 65.128716][ T8407] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.141103][ T8404] team0: Port device team_slave_1 added [ 65.186600][ T8404] device hsr_slave_0 entered promiscuous mode [ 65.234787][ T8404] device hsr_slave_1 entered promiscuous mode [ 65.293641][ T8404] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.386486][ T8402] device hsr_slave_0 entered promiscuous mode [ 65.424078][ T8402] device hsr_slave_1 entered promiscuous mode [ 65.463501][ T8402] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.472400][ T8407] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.488403][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.497682][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.506133][ T2865] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.513270][ T2865] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.520912][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.529855][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.538975][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.547799][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.557016][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.608099][ T8407] team0: Port device team_slave_0 added [ 65.616167][ T8409] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.623319][ T8409] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.631668][ T8409] device bridge_slave_0 entered promiscuous mode [ 65.639581][ T8409] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.646701][ T8409] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.654704][ T8409] device bridge_slave_1 entered promiscuous mode [ 65.677536][ T8407] team0: Port device team_slave_1 added [ 65.683313][ T8404] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 65.732268][ T8404] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 65.810399][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.819253][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.849691][ T8404] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 65.886177][ T8404] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 65.947473][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.956125][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.998243][ T8407] device hsr_slave_0 entered promiscuous mode [ 66.044228][ T8407] device hsr_slave_1 entered promiscuous mode [ 66.083504][ T8407] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.092356][ T8409] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.110570][ T8397] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.123785][ T8397] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.136144][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.145216][ T2865] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.162809][ T8409] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.183126][ T8409] team0: Port device team_slave_0 added [ 66.199864][ T8402] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 66.250696][ T8409] team0: Port device team_slave_1 added [ 66.271206][ T8407] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 66.305941][ T8402] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 66.365102][ T8402] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 66.415213][ T8402] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 66.466672][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.474349][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.482713][ T8407] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 66.516693][ T8407] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 66.578049][ T8407] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 66.642675][ T8397] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.686438][ T8409] device hsr_slave_0 entered promiscuous mode [ 66.744923][ T8409] device hsr_slave_1 entered promiscuous mode [ 66.803531][ T8409] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.879225][ T8400] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.897861][ T8409] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 66.927160][ T8409] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 66.995992][ T8409] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 67.046001][ T8409] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 67.106896][ T8407] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.141656][ T8404] 8021q: adding VLAN 0 to HW filter on device bond0 [ 172.163411][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 172.170511][ C1] (detected by 1, t=10502 jiffies, g=6569, q=155) [ 172.177015][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954311-4294943808), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 172.190386][ C1] syz-executor.0 R running task 27912 8420 8397 0x0000400e [ 172.198309][ C1] Call Trace: [ 172.201584][ C1] [ 172.204437][ C1] sched_show_task+0x40f/0x560 [ 172.209206][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 172.215445][ C1] update_process_times+0x12d/0x180 [ 172.220637][ C1] tick_sched_timer+0x263/0x420 [ 172.225476][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 172.231015][ C1] __hrtimer_run_queues+0x403/0x840 [ 172.236236][ C1] hrtimer_interrupt+0x38c/0xda0 [ 172.241207][ C1] ? debug_smp_processor_id+0x9/0x20 [ 172.246502][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 172.252049][ C1] apic_timer_interrupt+0xf/0x20 [ 172.256975][ C1] [ 172.259910][ C1] RIP: 0010:__memcg_kmem_uncharge+0x130/0x1a0 [ 172.265967][ C1] Code: 7c 48 89 d8 48 c1 e8 03 42 8a 04 28 84 c0 75 3b f6 03 01 75 10 49 83 c7 10 4c 89 ff 48 8b 75 d0 e8 f5 90 00 00 48 83 c4 08 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 44 89 e1 80 e1 07 80 c1 03 38 c1 7c [ 172.285576][ C1] RSP: 0018:ffffc900026d7818 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 172.293993][ C1] RAX: 0000000000000001 RBX: ffffea00025bf4c0 RCX: 0000000000000000 [ 172.301987][ C1] RDX: ffffc90001d79000 RSI: 0000000000000000 RDI: ffffea00025bf4c0 [ 172.310038][ C1] RBP: ffffc900026d7838 R08: dffffc0000000000 R09: fffffbfff1287a8d [ 172.317997][ C1] R10: fffffbfff1287a8d R11: 0000000000000000 R12: ffffea00025bf4c0 [ 172.325959][ C1] R13: 1ffffd40004b7e9f R14: ffffea00025bf4f8 R15: 0000000000000000 [ 172.333980][ C1] free_thread_stack+0x12e/0x590 [ 172.338953][ C1] put_task_stack+0xa3/0x130 [ 172.343534][ C1] finish_task_switch+0x3f1/0x550 [ 172.348579][ C1] __schedule+0x9a8/0xcc0 [ 172.352915][ C1] schedule+0x181/0x210 [ 172.357069][ C1] futex_wait_queue_me+0x2a3/0x4b0 [ 172.362207][ C1] futex_wait+0x252/0x770 [ 172.366560][ C1] do_futex+0x437/0x3d60 [ 172.370798][ C1] ? __lock_acquire+0xc75/0x1be0 [ 172.375765][ C1] ? __might_fault+0xf9/0x160 [ 172.380458][ C1] ? __might_fault+0xf9/0x160 [ 172.385138][ C1] ? check_preemption_disabled+0xb4/0x260 [ 172.390852][ C1] ? debug_smp_processor_id+0x9/0x20 [ 172.396137][ C1] __se_sys_futex+0x28c/0x360 [ 172.400807][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 172.406600][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 172.412306][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 172.417754][ C1] __x64_sys_futex+0xe5/0x100 [ 172.422419][ C1] do_syscall_64+0xf7/0x1c0 [ 172.427005][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 172.432885][ C1] RIP: 0033:0x45a679 [ 172.436770][ C1] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 172.456475][ C1] RSP: 002b:00007eff4857fcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 172.464937][ C1] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 172.472912][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 172.480964][ C1] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 172.488925][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 172.496900][ C1] R13: 00007fffa2e965af R14: 00007eff485809c0 R15: 000000000075bf2c [ 172.504887][ C1] rcu: rcu_preempt kthread starved for 10536 jiffies! g6569 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 172.516061][ C1] rcu: RCU grace-period kthread stack dump: [ 172.521938][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 172.529829][ C1] Call Trace: [ 172.533119][ C1] __schedule+0x9a0/0xcc0 [ 172.537449][ C1] schedule+0x181/0x210 [ 172.541594][ C1] schedule_timeout+0x14f/0x240 [ 172.546433][ C1] ? run_local_timers+0x120/0x120 [ 172.551455][ C1] rcu_gp_kthread+0xed8/0x1770 [ 172.556218][ C1] kthread+0x332/0x350 [ 172.560271][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 172.565365][ C1] ? kthread_blkcg+0xe0/0xe0 [ 172.569944][ C1] ret_from_fork+0x24/0x30