[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 47.707753][ T23] audit: type=1800 audit(1575383908.878:25): pid=8261 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.728744][ T23] audit: type=1800 audit(1575383908.878:26): pid=8261 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.783779][ T23] audit: type=1800 audit(1575383908.878:27): pid=8261 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 '10.128.0.219' (ECDSA) to the list of known hosts. 2019/12/03 14:38:39 fuzzer started 2019/12/03 14:38:41 dialing manager at 10.128.0.26:45711 2019/12/03 14:38:41 syscalls: 2689 2019/12/03 14:38:41 code coverage: enabled 2019/12/03 14:38:41 comparison tracing: enabled 2019/12/03 14:38:41 extra coverage: extra coverage is not supported by the kernel 2019/12/03 14:38:41 setuid sandbox: enabled 2019/12/03 14:38:41 namespace sandbox: enabled 2019/12/03 14:38:41 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 14:38:41 fault injection: enabled 2019/12/03 14:38:41 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 14:38:41 net packet injection: enabled 2019/12/03 14:38:41 net device setup: enabled 2019/12/03 14:38:41 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 14:38:41 devlink PCI setup: PCI device 0000:00:10.0 is not available 14:38:42 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000040)=0xe) ioctl$TCSETS(r0, 0x541b, &(0x7f00000001c0)) 14:38:43 executing program 1: perf_event_open(&(0x7f0000000080)={0x2, 0x70, 0xea, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000000)='personality\x00') r1 = socket$kcm(0xa, 0x2, 0x73) sendfile(r1, r0, 0x0, 0x7fffffff) syzkaller login: [ 61.932989][ T8428] IPVS: ftp: loaded support on port[0] = 21 14:38:43 executing program 2: r0 = msgget$private(0x0, 0x0) msgsnd(r0, &(0x7f00000001c0)=ANY=[@ANYRESHEX=0x0], 0x1, 0x0) msgsnd(0x0, 0x0, 0x0, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000080)='net/dev_mcast\x00\xc0\x87\xeaU\x01\x1e\x14\xc9\xe3G\xdd\x1fU\xa6\x02\x11I\xb7\xe0g\xf3\xc5w\x98\x1c\t\x94\xa1\xe8\r\x90\xd4\x9dh\xbd\xbc\x91\xfa\xb9\xc1\xc7\xf0c\xe6v\xe80xffffffffffffffff}) vmsplice(r0, &(0x7f00000000c0)=[{&(0x7f0000000180)="77690addcfbe1fbb66ec", 0xff3b}], 0x1, 0x1) close(r0) r1 = socket$inet6(0xa, 0x2, 0x0) setsockopt$inet6_opts(r1, 0x29, 0x37, &(0x7f0000000340)=ANY=[@ANYBLOB="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"], 0x8) setsockopt$inet6_buf(r1, 0x29, 0x39, &(0x7f0000e86000)="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", 0x118) connect$inet6(r1, &(0x7f0000000040)={0xa, 0x4e22, 0x0, @dev, 0x6}, 0x1c) perf_event_open(&(0x7f0000000040)={0x2, 0x70, 0x1f, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) syz_open_dev$mice(0x0, 0x0, 0x28100) r2 = open(0x0, 0x0, 0x0) getdents64(r2, 0x0, 0x600) r3 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getdents64(r3, 0x0, 0x600) getresuid(&(0x7f0000000d00), &(0x7f0000000d40), 0x0) open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getsockopt$inet_pktinfo(0xffffffffffffffff, 0x0, 0x8, &(0x7f0000000240)={0x0, @multicast1, @multicast1}, &(0x7f0000000280)=0xc) r4 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) symlinkat(&(0x7f0000000040)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', r4, &(0x7f00000000c0)='./file0\x00') mkdirat(r4, &(0x7f0000000400)='\x13\x13w\xc5\xfc5\xd4\x14T\xd5\xd4\x1d)\xad\x1a`)Y\x81F\xe6\xbe\x16nA\xad\r\xbd@T\x03<\x9f3\xbb\xda\x82$\xa2\xf3\xd7r\xe7cnH\xb3<\xbfp\x83r\xe8\xf1\xb9\x93>\xc5\x12wC\xbe\"\x06 \x9e\xf0-\xf9\xcb\xf2\xf6\xe8\x80\xd38/\x00', 0x0) r5 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) renameat2(r5, &(0x7f0000000180)='./file0\x00', r4, &(0x7f0000000640)='./file0/file0\x00', 0x1) [ 62.747687][ T8428] device hsr_slave_0 entered promiscuous mode [ 62.805085][ T8428] device hsr_slave_1 entered promiscuous mode [ 62.876540][ T8436] IPVS: ftp: loaded support on port[0] = 21 [ 62.946738][ T8431] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 14:38:44 executing program 5: r0 = socket$inet_tcp(0x2, 0x1, 0x0) ioctl$sock_inet_SIOCSIFADDR(r0, 0x8916, &(0x7f0000000100)={'syz_tun\x00', {0x2, 0x0, @multicast1}}) [ 62.993491][ T8438] IPVS: ftp: loaded support on port[0] = 21 [ 63.016517][ T8428] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.096445][ T8431] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.122626][ T8431] team0: Port device team_slave_0 added [ 63.130891][ T8431] team0: Port device team_slave_1 added [ 63.142878][ T8428] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.198002][ T8428] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.256626][ T8428] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.321436][ T8433] chnl_net:caif_netlink_parms(): no params data found [ 63.396009][ T8431] device hsr_slave_0 entered promiscuous mode [ 63.434204][ T8431] device hsr_slave_1 entered promiscuous mode [ 63.473950][ T8431] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.492953][ T8441] IPVS: ftp: loaded support on port[0] = 21 [ 63.548650][ T8431] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 63.601115][ T8431] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 63.657826][ T8431] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 63.707424][ T8431] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 63.769660][ T8433] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.777675][ T8433] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.787138][ T8433] device bridge_slave_0 entered promiscuous mode [ 63.796396][ T8433] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.803440][ T8433] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.811712][ T8433] device bridge_slave_1 entered promiscuous mode [ 63.851188][ T8433] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.908667][ T8433] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.933286][ T8436] chnl_net:caif_netlink_parms(): no params data found [ 63.968938][ T8428] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.992252][ T8433] team0: Port device team_slave_0 added [ 64.000466][ T8433] team0: Port device team_slave_1 added [ 64.028187][ T8431] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.106059][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.117562][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.166847][ T8433] device hsr_slave_0 entered promiscuous mode [ 64.204170][ T8433] device hsr_slave_1 entered promiscuous mode [ 64.243863][ T8433] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.257678][ T8436] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.264877][ T8436] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.272483][ T8436] device bridge_slave_0 entered promiscuous mode [ 64.281920][ T8436] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.289060][ T8436] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.296825][ T8436] device bridge_slave_1 entered promiscuous mode [ 64.306664][ T8428] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.313973][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.322147][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.335062][ T8438] chnl_net:caif_netlink_parms(): no params data found [ 64.367180][ T8431] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.425153][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.433857][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.442462][ T3082] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.449866][ T3082] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.458749][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.468056][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.476763][ T3082] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.484108][ T3082] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.491842][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.501022][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.509739][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.518704][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.527390][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.539212][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.548028][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.556562][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.565200][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.574278][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.582689][ T3082] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.589803][ T3082] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.597966][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.606734][ T3082] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.615071][ T3082] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.622115][ T3082] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.653210][ T8436] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.667589][ T8441] chnl_net:caif_netlink_parms(): no params data found [ 64.687877][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.696092][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.704682][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.712576][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.721764][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.731185][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.743967][ T8428] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.757126][ T8438] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.767229][ T8438] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.776695][ T8438] device bridge_slave_0 entered promiscuous mode [ 64.786747][ T8436] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.796074][ T8438] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.803115][ T8438] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.813988][ T8438] device bridge_slave_1 entered promiscuous mode [ 64.830722][ T8433] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 64.901500][ T8433] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 64.960927][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.973131][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.983348][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.992253][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.002382][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.011351][ T2722] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.033317][ T8441] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.041169][ T8441] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.049808][ T8441] device bridge_slave_0 entered promiscuous mode [ 65.057517][ T8433] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 65.127204][ T8433] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 65.186778][ T8436] team0: Port device team_slave_0 added [ 65.194580][ T8441] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.201913][ T8441] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.211379][ T8441] device bridge_slave_1 entered promiscuous mode [ 65.225386][ T8438] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.238185][ T8438] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.253192][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.262706][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.274220][ T8431] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.285888][ T8431] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.295721][ T8436] team0: Port device team_slave_1 added [ 65.313471][ T8441] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.332938][ T8445] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.341642][ T8445] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.353063][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.361884][ T8442] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.373496][ T8438] team0: Port device team_slave_0 added [ 65.381907][ T8438] team0: Port device team_slave_1 added [ 65.389389][ T8441] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.403268][ T8428] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.486474][ T8436] device hsr_slave_0 entered promiscuous mode [ 65.514896][ T8436] device hsr_slave_1 entered promiscuous mode [ 65.554033][ T8436] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.570442][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.577927][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.587281][ T8441] team0: Port device team_slave_0 added [ 65.626168][ T8438] device hsr_slave_0 entered promiscuous mode [ 65.674271][ T8438] device hsr_slave_1 entered promiscuous mode [ 65.744085][ T8438] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.761822][ T8431] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.771687][ T8441] team0: Port device team_slave_1 added [ 170.843657][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 170.850668][ C0] (detected by 0, t=10502 jiffies, g=6785, q=108) [ 170.857157][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954199-4294943696), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 170.870495][ C0] syz-executor.3 R running task 24888 8436 8434 0x0000400a [ 170.878382][ C0] Call Trace: [ 170.881653][ C0] [ 170.884502][ C0] sched_show_task+0x40f/0x560 [ 170.889259][ C0] rcu_sched_clock_irq+0x1861/0x1ad0 [ 170.894538][ C0] update_process_times+0x12d/0x180 [ 170.899724][ C0] tick_sched_timer+0x263/0x420 [ 170.904559][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 170.910093][ C0] __hrtimer_run_queues+0x403/0x840 [ 170.915291][ C0] hrtimer_interrupt+0x38c/0xda0 [ 170.920230][ C0] ? debug_smp_processor_id+0x9/0x20 [ 170.925514][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 170.931048][ C0] apic_timer_interrupt+0xf/0x20 [ 170.935974][ C0] [ 170.938903][ C0] RIP: 0010:__memcg_kmem_uncharge+0x44/0x2e0 [ 170.944889][ C0] Code: fc ff df 4c 8d 77 38 4d 89 f5 49 c1 ed 03 41 80 7c 05 00 00 74 08 4c 89 f7 e8 d8 f4 fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 <4d> 85 ff 0f 84 bf 01 00 00 4c 39 3d 04 ce 8c 07 0f 84 6e 02 00 00 [ 170.964569][ C0] RSP: 0018:ffffc900022a6ba8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 170.973419][ C0] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 [ 170.981380][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000255cbc0 [ 170.989340][ C0] RBP: ffffc900022a6bd8 R08: dffffc0000000000 R09: fffffbfff120248a [ 170.997312][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea000255cbc0 [ 171.005268][ C0] R13: 1ffffd40004ab97f R14: ffffea000255cbf8 R15: 0000000000000000 [ 171.013264][ C0] ? free_thread_stack+0x124/0x590 [ 171.018364][ C0] free_thread_stack+0x12e/0x590 [ 171.023295][ C0] put_task_stack+0xa3/0x130 [ 171.027876][ C0] finish_task_switch+0x3f1/0x550 [ 171.032894][ C0] __schedule+0x9a8/0xcc0 [ 171.037225][ C0] preempt_schedule_irq+0xc1/0x140 [ 171.042321][ C0] retint_kernel+0x1b/0x2b [ 171.046729][ C0] RIP: 0010:unwind_next_frame+0x6e/0x7a0 [ 171.052347][ C0] Code: 84 f6 05 00 00 48 89 9d 68 ff ff ff 4d 8d 7d 58 4c 89 f8 48 c1 e8 03 48 89 45 a8 42 80 3c 30 00 74 08 4c 89 ff e8 b2 e6 7c 00 <49> 8b 1f 48 85 db 74 30 4c 8d b3 88 00 00 00 4c 89 f0 48 c1 e8 03 [ 171.071935][ C0] RSP: 0018:ffffc900022a6e38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 171.080426][ C0] RAX: 1ffff92000454de7 RBX: 1ffff92000454ddc RCX: 0000000000000000 [ 171.088381][ C0] RDX: 000000000000000c RSI: 0000000000000040 RDI: ffffc900022a6ee0 [ 171.096336][ C0] RBP: ffffc900022a6ed0 R08: ffffffff81659d9d R09: ffffc900022a6ee0 [ 171.104296][ C0] R10: fffff52000454de8 R11: 0000000000000000 R12: ffff88808d5ea400 [ 171.112271][ C0] R13: ffffc900022a6ee0 R14: dffffc0000000000 R15: ffffc900022a6f38 [ 171.120245][ C0] ? stack_trace_consume_entry+0x17d/0x260 [ 171.126043][ C0] ? unwind_next_frame+0x3f1/0x7a0 [ 171.131143][ C0] ? __unwind_start+0x36a/0x440 [ 171.135999][ C0] ? nsim_create+0x1d4/0x230 [ 171.140579][ C0] ? stack_trace_save+0x150/0x150 [ 171.145596][ C0] arch_stack_walk+0xb4/0xe0 [ 171.150191][ C0] ? nsim_create+0x1d4/0x230 [ 171.154915][ C0] stack_trace_save+0xb6/0x150 [ 171.159688][ C0] __kasan_kmalloc+0x11c/0x1b0 [ 171.164448][ C0] ? __kasan_kmalloc+0x11c/0x1b0 [ 171.169379][ C0] ? kasan_slab_alloc+0xf/0x20 [ 171.174128][ C0] ? kmem_cache_alloc+0x1f5/0x2e0 [ 171.179139][ C0] ? __kernfs_new_node+0x97/0x680 [ 171.184150][ C0] ? kernfs_new_node+0x97/0x170 [ 171.188987][ C0] ? __kernfs_create_file+0x4a/0x2f0 [ 171.194257][ C0] ? sysfs_add_file_mode_ns+0x2dc/0x3a0 [ 171.199785][ C0] ? internal_create_group+0x4be/0xd80 [ 171.205223][ C0] ? sysfs_create_group+0x1f/0x30 [ 171.210232][ C0] ? netdev_queue_update_kobjects+0x1b0/0x3c0 [ 171.216280][ C0] ? netdev_register_kobject+0x241/0x2f0 [ 171.221916][ C0] ? register_netdevice+0xfc9/0x1830 [ 171.227215][ C0] ? nsim_create+0x1d4/0x230 [ 171.231821][ C0] ? __kasan_check_read+0x11/0x20 [ 171.236839][ C0] ? mark_lock+0x107/0x1650 [ 171.241351][ C0] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 171.246653][ C0] ? kmem_cache_alloc+0x194/0x2e0 [ 171.251679][ C0] kasan_slab_alloc+0xf/0x20 [ 171.256256][ C0] kmem_cache_alloc+0x1f5/0x2e0 [ 171.261099][ C0] ? __kernfs_new_node+0x97/0x680 [ 171.266112][ C0] __kernfs_new_node+0x97/0x680 [ 171.270954][ C0] ? mutex_unlock+0x1b/0x30 [ 171.275451][ C0] ? kernfs_activate+0x4c7/0x4e0 [ 171.280377][ C0] kernfs_new_node+0x97/0x170 [ 171.285044][ C0] __kernfs_create_file+0x4a/0x2f0 [ 171.290150][ C0] sysfs_add_file_mode_ns+0x2dc/0x3a0 [ 171.295516][ C0] internal_create_group+0x4be/0xd80 [ 171.301763][ C0] sysfs_create_group+0x1f/0x30 [ 171.306619][ C0] netdev_queue_update_kobjects+0x1b0/0x3c0 [ 171.312520][ C0] netdev_register_kobject+0x241/0x2f0 [ 171.317978][ C0] register_netdevice+0xfc9/0x1830 [ 171.323102][ C0] nsim_create+0x1d4/0x230 [ 171.327515][ C0] __nsim_dev_port_add+0x289/0x4d0 [ 171.332619][ C0] ? debugfs_create_file_unsafe+0x4a/0x60 [ 171.338334][ C0] ? nsim_bpf_dev_init+0x1eb/0x220 [ 171.343430][ C0] nsim_dev_probe+0xb55/0xef0 [ 171.348111][ C0] nsim_bus_probe+0x15/0x20 [ 171.353032][ C0] really_probe+0x71c/0xf40 [ 171.357526][ C0] driver_probe_device+0xfc/0x260 [ 171.362535][ C0] ? parse_option_str+0x1bf/0x200 [ 171.367547][ C0] __device_attach_driver+0x336/0x3f0 [ 171.372904][ C0] ? coredump_store+0x90/0x90 [ 171.377564][ C0] bus_for_each_drv+0x12b/0x180 [ 171.382406][ C0] __device_attach+0x1ea/0x390 [ 171.387168][ C0] device_initial_probe+0x1a/0x20 [ 171.392175][ C0] bus_probe_device+0xb9/0x1f0 [ 171.396926][ C0] device_add+0x1710/0x1ad0 [ 171.401431][ C0] device_register+0x1d/0x20 [ 171.406005][ C0] new_device_store+0x286/0x510 [ 171.410861][ C0] ? nsim_num_vf+0x50/0x50 [ 171.415264][ C0] bus_attr_store+0x78/0x90 [ 171.419750][ C0] ? bus_attr_show+0x90/0x90 [ 171.424330][ C0] sysfs_kf_write+0x281/0x2f0 [ 171.428994][ C0] ? sysfs_kf_read+0x370/0x370 [ 171.434279][ C0] kernfs_fop_write+0x3e4/0x4e0 [ 171.439116][ C0] ? kernfs_fop_read+0x580/0x580 [ 171.444044][ C0] __vfs_write+0xb8/0x740 [ 171.448365][ C0] ? rcu_read_lock_any_held+0x13d/0x1a0 [ 171.453897][ C0] ? __sb_start_write+0x382/0x430 [ 171.458908][ C0] vfs_write+0x275/0x590 [ 171.463140][ C0] ksys_write+0x117/0x220 [ 171.467461][ C0] __x64_sys_write+0x7b/0x90 [ 171.472036][ C0] do_syscall_64+0xf7/0x1c0 [ 171.476528][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 171.482407][ C0] RIP: 0033:0x414130 [ 171.486292][ C0] 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 [ 171.505883][ C0] RSP: 002b:00007ffdb0a6c4a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 171.514282][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000414130 [ 171.522239][ C0] RDX: 0000000000000003 RSI: 00007ffdb0a6c4d0 RDI: 0000000000000004 [ 171.530194][ C0] RBP: 00007ffdb0a6c4d0 R08: 0000000000000000 R09: 0000000000000003 [ 171.538156][ C0] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004bfc97 [ 171.546131][ C0] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000 [ 171.554112][ C0] rcu: rcu_preempt kthread starved for 10573 jiffies! g6785 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 171.565187][ C0] rcu: RCU grace-period kthread stack dump: [ 171.571058][ C0] rcu_preempt R running task 29104 10 2 0x80004000 [ 171.579122][ C0] Call Trace: [ 171.582402][ C0] __schedule+0x9a0/0xcc0 [ 171.586727][ C0] schedule+0x181/0x210 [ 171.590869][ C0] schedule_timeout+0x14f/0x240 [ 171.595716][ C0] ? run_local_timers+0x120/0x120 [ 171.600729][ C0] rcu_gp_kthread+0xed8/0x1770 [ 171.605493][ C0] kthread+0x332/0x350 [ 171.609548][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 171.614647][ C0] ? kthread_blkcg+0xe0/0xe0 [ 171.619224][ C0] ret_from_fork+0x24/0x30