[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 42.255093][ T25] audit: type=1800 audit(1575396772.055:25): pid=7947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.289753][ T25] audit: type=1800 audit(1575396772.055:26): pid=7947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.322843][ T25] audit: type=1800 audit(1575396772.055:27): pid=7947 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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 '10.128.0.240' (ECDSA) to the list of known hosts. 2019/12/03 18:13:03 fuzzer started 2019/12/03 18:13:04 dialing manager at 10.128.0.26:42111 2019/12/03 18:13:04 syscalls: 2689 2019/12/03 18:13:04 code coverage: enabled 2019/12/03 18:13:04 comparison tracing: enabled 2019/12/03 18:13:04 extra coverage: extra coverage is not supported by the kernel 2019/12/03 18:13:04 setuid sandbox: enabled 2019/12/03 18:13:04 namespace sandbox: enabled 2019/12/03 18:13:04 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 18:13:04 fault injection: enabled 2019/12/03 18:13:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 18:13:04 net packet injection: enabled 2019/12/03 18:13:04 net device setup: enabled 2019/12/03 18:13:04 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 18:13:04 devlink PCI setup: PCI device 0000:00:10.0 is not available 18:13:05 executing program 0: msgctl$IPC_RMID(0x0, 0xa) 18:13:05 executing program 1: r0 = memfd_create(&(0x7f0000000180)='G\'\x00\x8f\x1cH\xf9\x9e\x00\x16~\xdb`\x00\x00\x9a\xd4\xceof-\xbc\x12\x94\xe7\xcbH\x8dU;Z\xfc\xe1id?\x00\x02\x00\x00@\xfe\xfe\b\x8d\xd0\x84\xa5|\x02q', 0x0) r1 = socket(0xa, 0x2, 0x0) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0xa) setreuid(0x0, r2) fchmod(r0, 0x0) syzkaller login: [ 56.025240][ T8111] IPVS: ftp: loaded support on port[0] = 21 [ 56.168868][ T8113] IPVS: ftp: loaded support on port[0] = 21 [ 56.204584][ T8111] chnl_net:caif_netlink_parms(): no params data found 18:13:06 executing program 2: bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0xa, 0x4, &(0x7f0000000040)=@framed={{0xffffffb4, 0x5, 0x0, 0x0, 0x0, 0x71, 0x10, 0x6d}, [@ldst={0x4}]}, &(0x7f0000003ff6)='G\x00', 0x5, 0xfd90, &(0x7f000000cf3d)=""/195, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x0, 0x10, &(0x7f0000000080), 0xfffffffffffffffb}, 0x48) [ 56.263119][ T8111] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.271493][ T8111] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.283194][ T8111] device bridge_slave_0 entered promiscuous mode [ 56.304151][ T8111] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.311807][ T8111] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.320224][ T8111] device bridge_slave_1 entered promiscuous mode [ 56.342221][ T8111] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.357279][ T8111] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.387437][ T8111] team0: Port device team_slave_0 added [ 56.422173][ T8111] team0: Port device team_slave_1 added [ 56.443285][ T8113] chnl_net:caif_netlink_parms(): no params data found 18:13:06 executing program 3: sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000000)=ANY=[@ANYBLOB="1200000043000901000007000000000000000000"], 0x14}}, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000017c0)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r2, &(0x7f0000000140)=[{0x0, 0x0, &(0x7f0000000100), 0x0, &(0x7f0000000100)}], 0x492492492492805, 0x0) [ 56.562148][ T8111] device hsr_slave_0 entered promiscuous mode 18:13:06 executing program 4: r0 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$nl_xfrm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000000c0)=@newsa={0x180, 0x10, 0x713, 0x0, 0x0, {{@in=@broadcast, @in6=@initdev={0xfe, 0x88, [], 0x0, 0x0}}, {@in=@multicast1, 0x0, 0x33}, @in6=@remote, {}, {}, {}, 0x0, 0x0, 0xa}, [@algo_crypt={0x48, 0x2, {{'ctr-twofish-avx\x00'}}}, @algo_auth={0x48, 0x1, {{'md5\x00'}}}]}, 0x180}}, 0x0) [ 56.699923][ T8111] device hsr_slave_1 entered promiscuous mode [ 56.825864][ T8113] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.833851][ T8113] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.850799][ T8113] device bridge_slave_0 entered promiscuous mode [ 56.876841][ T8120] IPVS: ftp: loaded support on port[0] = 21 [ 56.901148][ T8113] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.908245][ T8113] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.912776][ T8118] IPVS: ftp: loaded support on port[0] = 21 [ 56.930436][ T8113] device bridge_slave_1 entered promiscuous mode 18:13:06 executing program 5: r0 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$nl_xfrm(r0, &(0x7f0000000840)={0x0, 0x0, &(0x7f00000004c0)={&(0x7f0000000a00)=@newsa={0xf0, 0x10, 0x40d, 0x0, 0x0, {{@in=@dev, @in6=@mcast1, 0x0, 0x0, 0x0, 0x0, 0xa}, {@in=@multicast2}, @in6=@remote, {}, {}, {}, 0x0, 0x0, 0xa}}, 0xf0}}, 0x0) [ 56.988518][ T8122] IPVS: ftp: loaded support on port[0] = 21 [ 57.027727][ T8113] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.048145][ T8111] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.105642][ T8113] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.131360][ T8113] team0: Port device team_slave_0 added [ 57.137139][ T8111] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.183371][ T8111] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.231765][ T8111] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.276549][ T8113] team0: Port device team_slave_1 added [ 57.341904][ T8113] device hsr_slave_0 entered promiscuous mode [ 57.409917][ T8113] device hsr_slave_1 entered promiscuous mode [ 57.449700][ T8113] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.472167][ T8124] IPVS: ftp: loaded support on port[0] = 21 [ 57.555041][ T8120] chnl_net:caif_netlink_parms(): no params data found [ 57.585359][ T8113] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.634474][ T8113] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.671936][ T8113] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.722843][ T8113] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.802176][ T8122] chnl_net:caif_netlink_parms(): no params data found [ 57.874293][ T8122] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.886162][ T8122] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.894804][ T8122] device bridge_slave_0 entered promiscuous mode [ 57.915378][ T8111] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.927567][ T8118] chnl_net:caif_netlink_parms(): no params data found [ 57.942427][ T8122] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.949493][ T8122] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.959015][ T8122] device bridge_slave_1 entered promiscuous mode [ 57.981956][ T8120] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.989027][ T8120] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.996911][ T8120] device bridge_slave_0 entered promiscuous mode [ 58.015844][ T8122] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.041481][ T8120] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.048543][ T8120] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.056500][ T8120] device bridge_slave_1 entered promiscuous mode [ 58.070450][ T8122] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.089467][ T8122] team0: Port device team_slave_0 added [ 58.118731][ T8122] team0: Port device team_slave_1 added [ 58.182369][ T8122] device hsr_slave_0 entered promiscuous mode [ 58.219950][ T8122] device hsr_slave_1 entered promiscuous mode [ 58.259719][ T8122] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.267469][ T8118] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.275077][ T8118] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.283307][ T8118] device bridge_slave_0 entered promiscuous mode [ 58.294585][ T8118] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.302762][ T8118] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.310898][ T8118] device bridge_slave_1 entered promiscuous mode [ 58.324719][ T8124] chnl_net:caif_netlink_parms(): no params data found [ 58.358903][ T8125] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.367711][ T8125] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.377425][ T8120] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.389090][ T8120] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.413434][ T8111] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.442036][ T8118] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.453172][ T8118] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.474265][ T8120] team0: Port device team_slave_0 added [ 58.491586][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.500511][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.508925][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.516111][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.524400][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.533227][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.541786][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.548931][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.560277][ T8124] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.567339][ T8124] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.575471][ T8124] device bridge_slave_0 entered promiscuous mode [ 58.583285][ T8124] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.590498][ T8124] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.598036][ T8124] device bridge_slave_1 entered promiscuous mode [ 58.619184][ T8120] team0: Port device team_slave_1 added [ 58.628237][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.644556][ T8124] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.655173][ T8124] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.666932][ T8118] team0: Port device team_slave_0 added [ 58.693949][ T8113] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.701907][ T8118] team0: Port device team_slave_1 added [ 58.714531][ T8125] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.728416][ T8122] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.772962][ T8124] team0: Port device team_slave_0 added [ 58.778747][ T8122] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.863055][ T8120] device hsr_slave_0 entered promiscuous mode [ 58.910009][ T8120] device hsr_slave_1 entered promiscuous mode [ 58.969706][ T8120] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.978716][ T8129] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.994868][ T8111] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 59.005684][ T8111] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.018476][ T8124] team0: Port device team_slave_1 added [ 59.025347][ T8122] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.066559][ T8122] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.124919][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.133436][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.141986][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.151013][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.159257][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.167705][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.176511][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.184790][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.193084][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.200851][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.228648][ T8113] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.248823][ T8111] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.283991][ T8118] device hsr_slave_0 entered promiscuous mode [ 59.330805][ T8118] device hsr_slave_1 entered promiscuous mode [ 59.369762][ T8118] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.384460][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.392251][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.400180][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.407663][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.439180][ T8120] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.482031][ T8120] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.525555][ T8120] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.595437][ T8120] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.682392][ T8124] device hsr_slave_0 entered promiscuous mode [ 59.729997][ T8124] device hsr_slave_1 entered promiscuous mode [ 59.769701][ T8124] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.777375][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.786293][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.795052][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.802141][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.809780][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.818263][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.826975][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.834047][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.842756][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 164.899513][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 164.906517][ C1] (detected by 1, t=10502 jiffies, g=6265, q=146) [ 164.913002][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953640-4294943137), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 164.926345][ C1] syz-executor.5 R running task 24872 8124 8123 0x0000400a [ 164.934235][ C1] Call Trace: [ 164.937509][ C1] [ 164.940355][ C1] sched_show_task+0x40f/0x560 [ 164.945111][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 164.950393][ C1] update_process_times+0x12d/0x180 [ 164.955584][ C1] tick_sched_timer+0x263/0x420 [ 164.960421][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.965949][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.971146][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.976101][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.981378][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.986921][ C1] apic_timer_interrupt+0xf/0x20 [ 164.991840][ C1] [ 164.994765][ C1] RIP: 0010:free_thread_stack+0x14c/0x590 [ 165.000468][ C1] Code: 2e 00 48 89 df 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 [ 165.020055][ C1] RSP: 0018:ffffc900025d6f68 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 [ 165.028447][ C1] RAX: 1ffff11015143b91 RBX: ffff8880a8a1dc88 RCX: 0000000000000000 [ 165.036403][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000253f080 [ 165.044363][ C1] RBP: ffffc900025d6fa0 R08: dffffc0000000000 R09: fffffbfff120248a [ 165.052326][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a8a1dd20 [ 165.060285][ C1] R13: dffffc0000000000 R14: 1ffff11015143ba4 R15: ffff888098f9f9e8 [ 165.068258][ C1] ? free_thread_stack+0x12e/0x590 [ 165.073366][ C1] put_task_stack+0xa3/0x130 [ 165.077939][ C1] finish_task_switch+0x3f1/0x550 [ 165.083475][ C1] __schedule+0x9a8/0xcc0 [ 165.087811][ C1] preempt_schedule_irq+0xc1/0x140 [ 165.092910][ C1] retint_kernel+0x1b/0x2b [ 165.097309][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 [ 165.103364][ C1] Code: 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 25 cd 07 48 89 de e8 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 [ 165.122950][ C1] RSP: 0018:ffffc900025d71b8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 [ 165.131345][ C1] RAX: ffffffff81e22626 RBX: 0000000000000004 RCX: ffff888097336680 [ 165.139301][ C1] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 [ 165.147261][ C1] RBP: ffffc900025d7248 R08: ffffffff81e225a4 R09: ffffed1015d86fcd [ 165.155227][ C1] R10: ffffed1015d86fcd R11: 0000000000000000 R12: ffff888096ccac80 [ 165.163184][ C1] R13: ffff888096ccaca0 R14: ffffc900025d72c0 R15: 1ffff11012d99594 [ 165.171163][ C1] ? __register_sysctl_table+0x554/0x1290 [ 165.176867][ C1] ? __register_sysctl_table+0x5d6/0x1290 [ 165.182579][ C1] ? __register_sysctl_table+0x5d6/0x1290 [ 165.188288][ C1] ? snprintf+0x6f/0x90 [ 165.192430][ C1] ? kmemdup+0x1/0x50 [ 165.196402][ C1] register_net_sysctl+0x2c/0x40 [ 165.201330][ C1] __addrconf_sysctl_register+0x24f/0x390 [ 165.207046][ C1] addrconf_sysctl_register+0x141/0x1a0 [ 165.212580][ C1] ipv6_add_dev+0xad5/0x14a0 [ 165.217171][ C1] addrconf_notify+0x6bc/0x3c90 [ 165.222010][ C1] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 165.227278][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 165.232644][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 165.238260][ C1] ? trace_hardirqs_on+0x74/0x80 [ 165.243194][ C1] ? __local_bh_enable_ip+0x13a/0x240 [ 165.248549][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 165.254078][ C1] ? tls_dev_event+0x619/0xc00 [ 165.258827][ C1] ? clusterip_netdev_event+0x48b/0x4a0 [ 165.264356][ C1] ? ip6mr_device_event+0x1ee/0x210 [ 165.269630][ C1] raw_notifier_call_chain+0xec/0x190 [ 165.274990][ C1] register_netdevice+0x1339/0x1830 [ 165.280187][ C1] nsim_create+0x1d4/0x230 [ 165.284720][ C1] __nsim_dev_port_add+0x289/0x4d0 [ 165.289832][ C1] ? debugfs_create_file_unsafe+0x4a/0x60 [ 165.295637][ C1] ? nsim_bpf_dev_init+0x1eb/0x220 [ 165.300741][ C1] nsim_dev_probe+0xb55/0xef0 [ 165.305429][ C1] nsim_bus_probe+0x15/0x20 [ 165.309925][ C1] really_probe+0x71c/0xf40 [ 165.314443][ C1] driver_probe_device+0xfc/0x260 [ 165.319458][ C1] ? parse_option_str+0x1bf/0x200 [ 165.324472][ C1] __device_attach_driver+0x336/0x3f0 [ 165.329831][ C1] ? coredump_store+0x90/0x90 [ 165.334516][ C1] bus_for_each_drv+0x12b/0x180 [ 165.339363][ C1] __device_attach+0x1ea/0x390 [ 165.344123][ C1] device_initial_probe+0x1a/0x20 [ 165.349132][ C1] bus_probe_device+0xb9/0x1f0 [ 165.353891][ C1] device_add+0x1710/0x1ad0 [ 165.358400][ C1] device_register+0x1d/0x20 [ 165.363115][ C1] new_device_store+0x286/0x510 [ 165.367958][ C1] ? nsim_num_vf+0x50/0x50 [ 165.372363][ C1] bus_attr_store+0x78/0x90 [ 165.376855][ C1] ? bus_attr_show+0x90/0x90 [ 165.381437][ C1] sysfs_kf_write+0x281/0x2f0 [ 165.386113][ C1] ? sysfs_kf_read+0x370/0x370 [ 165.390898][ C1] kernfs_fop_write+0x3e4/0x4e0 [ 165.395736][ C1] ? kernfs_fop_read+0x580/0x580 [ 165.400664][ C1] __vfs_write+0xb8/0x740 [ 165.404987][ C1] ? rcu_read_lock_any_held+0x13d/0x1a0 [ 165.410691][ C1] ? __sb_start_write+0x382/0x430 [ 165.415877][ C1] vfs_write+0x275/0x590 [ 165.420197][ C1] ksys_write+0x117/0x220 [ 165.424514][ C1] __x64_sys_write+0x7b/0x90 [ 165.429093][ C1] do_syscall_64+0xf7/0x1c0 [ 165.433584][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.439463][ C1] RIP: 0033:0x414130 [ 165.443351][ C1] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 165.462938][ C1] RSP: 002b:00007ffe896b26d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 165.471440][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000414130 [ 165.479458][ C1] RDX: 0000000000000003 RSI: 00007ffe896b2700 RDI: 0000000000000004 [ 165.487459][ C1] RBP: 00007ffe896b2700 R08: 0000000000000000 R09: 0000000000000003 [ 165.495428][ C1] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004bfc97 [ 165.503478][ C1] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 165.511504][ C1] rcu: rcu_preempt kthread starved for 10563 jiffies! g6265 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.522588][ C1] rcu: RCU grace-period kthread stack dump: [ 165.528463][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.536350][ C1] Call Trace: [ 165.539634][ C1] __schedule+0x9a0/0xcc0 [ 165.544050][ C1] schedule+0x181/0x210 [ 165.548196][ C1] schedule_timeout+0x14f/0x240 [ 165.553037][ C1] ? run_local_timers+0x120/0x120 [ 165.558051][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.562820][ C1] kthread+0x332/0x350 [ 165.566872][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.571967][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.576551][ C1] ret_from_fork+0x24/0x30