[ 41.437706][ T23] audit: type=1800 audit(1575459161.301:27): 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 [ 41.457138][ T23] audit: type=1800 audit(1575459161.301:28): 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. [ 42.171955][ T23] audit: type=1800 audit(1575459162.101:29): 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 [ 42.191945][ T23] audit: type=1800 audit(1575459162.101:30): 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 '10.128.0.158' (ECDSA) to the list of known hosts. 2019/12/04 11:32:51 fuzzer started 2019/12/04 11:32:52 dialing manager at 10.128.0.26:36481 2019/12/04 11:32:52 syscalls: 2691 2019/12/04 11:32:52 code coverage: enabled 2019/12/04 11:32:52 comparison tracing: enabled 2019/12/04 11:32:52 extra coverage: extra coverage is not supported by the kernel 2019/12/04 11:32:52 setuid sandbox: enabled 2019/12/04 11:32:52 namespace sandbox: enabled 2019/12/04 11:32:52 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 11:32:52 fault injection: enabled 2019/12/04 11:32:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 11:32:52 net packet injection: enabled 2019/12/04 11:32:52 net device setup: enabled 2019/12/04 11:32:52 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 11:32:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 11:32:53 executing program 0: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) bpf$PROG_LOAD(0x5, &(0x7f0000000180)={0x2, 0x4, &(0x7f0000000fc0)=@framed={{0x18, 0x2}, [@call={0x85, 0x0, 0x0, 0x37}]}, &(0x7f00000000c0)='GPL\x00', 0x4, 0x1000, &(0x7f000062b000)=""/4096, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x70) 11:32:53 executing program 1: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_ifreq(r0, 0x8913, &(0x7f0000000200)={'eql\x00`\x02\xa9[,\x00\x14\x01\x03\x03\xf0\x00', @ifru_mtu}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000)='/dev/net/tun\x00', 0x0, 0x0) ioctl$TUNSETIFF(r1, 0x400454ca, &(0x7f0000000040)={'eql\x00\x00\x04\x00\x00\x00\x03\x00\x00\x00\xf2\a\x00', 0x10005812}) syzkaller login: [ 54.026423][ T8097] IPVS: ftp: loaded support on port[0] = 21 [ 54.172731][ T8097] chnl_net:caif_netlink_parms(): no params data found 11:32:54 executing program 2: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) fsconfig$FSCONFIG_CMD_CREATE(0xffffffffffffffff, 0x6, 0x0, 0x0, 0x0) r0 = socket$rds(0x15, 0x5, 0x0) bind$rds(r0, &(0x7f0000000180)={0x2, 0x0, @loopback}, 0x10) sendmsg$rds(r0, &(0x7f0000000d80)={&(0x7f00000000c0)={0x2, 0x0, @local}, 0x10, 0x0, 0x0, &(0x7f0000000c80)=[@mask_fadd={0x58, 0x114, 0x8, {{}, 0x0, 0x0}}], 0x58}, 0x0) [ 54.245648][ T8097] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.259170][ T8097] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.266769][ T8097] device bridge_slave_0 entered promiscuous mode [ 54.301498][ T8097] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.308709][ T8097] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.316553][ T8097] device bridge_slave_1 entered promiscuous mode [ 54.344759][ T8100] IPVS: ftp: loaded support on port[0] = 21 [ 54.356530][ T8097] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.367435][ T8097] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.403958][ T8097] team0: Port device team_slave_0 added [ 54.422681][ T8097] team0: Port device team_slave_1 added 11:32:54 executing program 3: bpf$PROG_LOAD(0x5, &(0x7f00000054c0)={0x16, 0x16, &(0x7f0000000380)=ANY=[@ANYBLOB="61129300000000006113500000000000bf2000000000000007000000080000002d0301000000000095000000000000006926000000000000bf67000000000000570600000fff07006706000002000000270600000ee60000bf250000000000003d350000000000006507000002001000070700004c0000001f75000000000000bf54000000000000070400004400f9f0ad32010000000000950000000000000005000000000000009500000000000000debfa255e44e4cc39f211fb04d7f202e6a536618f63a3fbd86bde99b679b4e6d24b8125690361eec3b181dcfd7c2fb2d1f8975b579a085bee32d414c1f3ab987a9de6185ae8021f48a33b9b35fe817e98beb9cefe7f40fd6f0ea3affbdaaa897c70fb01d270a7b00d36fb5ab8fa92ac014a106e3e4decc68652503ca54fcef437d96c8a05d59ddcc8abf09cd77e93e940207b03189c5d4661e43df6f1f036c8d85a2ad7615a021f8cbe507ef94845562668be443c2ba9b6548fb9f33315366e9ae9ce3175d1b532226b63b460d68808a67529637bf7f6731ad0cf1718bae3c8b9d2f89050cb496fe791381af6fab290900000000000000d640a5fde1f7d5eaa97cd25523fbd77300000000000000d67559b0c848aa3e7091f33e2dfc351e903ce85488fb25691249545bcf877011847df184bae6d3f5d0c016ec0706e5bbd04d27ec5769ecac581d5b2fcb494d8c2df1929398ec5c3675ed16c28dc646a695eed7f50c531a612d5677b5e949f21757d312f5089602c4e89ee42c13bdcfb74601ec2ec65f38f64189f1fa"], &(0x7f0000000100)='GPL\x00'}, 0x48) [ 54.559740][ T8097] device hsr_slave_0 entered promiscuous mode [ 54.598695][ T8097] device hsr_slave_1 entered promiscuous mode [ 54.654476][ T8102] IPVS: ftp: loaded support on port[0] = 21 11:32:54 executing program 4: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x156, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000040)=@newlink={0x28, 0x10, 0xc362e63b3f31ba5f, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x0, 0x2}, [@IFLA_GROUP={0x8}]}, 0x28}}, 0x0) [ 54.746690][ T8100] chnl_net:caif_netlink_parms(): no params data found [ 54.766910][ T8105] IPVS: ftp: loaded support on port[0] = 21 [ 54.789513][ T8097] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 54.831758][ T8097] netdevsim netdevsim0 netdevsim1: renamed from eth1 11:32:54 executing program 5: unshare(0x8020600) r0 = mq_open(&(0x7f0000000000)=',\x00', 0x6e93ebbbcc0884f2, 0x0, 0x0) read(r0, 0x0, 0x0) [ 54.941086][ T8097] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 54.970216][ T8097] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 55.046296][ T8107] IPVS: ftp: loaded support on port[0] = 21 [ 55.114230][ T8100] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.121764][ T8100] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.129647][ T8100] device bridge_slave_0 entered promiscuous mode [ 55.137086][ T8100] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.144264][ T8100] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.151910][ T8100] device bridge_slave_1 entered promiscuous mode [ 55.186998][ T8102] chnl_net:caif_netlink_parms(): no params data found [ 55.198396][ T8100] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.207665][ T8110] IPVS: ftp: loaded support on port[0] = 21 [ 55.227036][ T8100] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.274521][ T8100] team0: Port device team_slave_0 added [ 55.283699][ T8100] team0: Port device team_slave_1 added [ 55.315416][ T8102] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.322848][ T8102] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.330888][ T8102] device bridge_slave_0 entered promiscuous mode [ 55.340751][ T8102] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.347797][ T8102] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.355453][ T8102] device bridge_slave_1 entered promiscuous mode [ 55.380431][ T8102] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.391333][ T8102] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.427463][ T8105] chnl_net:caif_netlink_parms(): no params data found [ 55.465141][ T8102] team0: Port device team_slave_0 added [ 55.476789][ T8102] team0: Port device team_slave_1 added [ 55.531221][ T8100] device hsr_slave_0 entered promiscuous mode [ 55.598697][ T8100] device hsr_slave_1 entered promiscuous mode [ 55.648466][ T8100] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.710679][ T8107] chnl_net:caif_netlink_parms(): no params data found [ 55.740501][ T8102] device hsr_slave_0 entered promiscuous mode [ 55.790508][ T8102] device hsr_slave_1 entered promiscuous mode [ 55.848464][ T8102] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.862190][ T8105] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.869697][ T8105] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.877325][ T8105] device bridge_slave_0 entered promiscuous mode [ 55.884695][ T8100] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 55.930465][ T8100] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 56.011242][ T8105] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.018908][ T8105] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.026474][ T8105] device bridge_slave_1 entered promiscuous mode [ 56.041760][ T8097] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.049702][ T8100] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 56.113131][ T8100] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 56.210579][ T8107] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.217708][ T8107] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.225698][ T8107] device bridge_slave_0 entered promiscuous mode [ 56.234019][ T8107] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.241157][ T8107] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.250067][ T8107] device bridge_slave_1 entered promiscuous mode [ 56.264212][ T8105] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.276805][ T8097] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.305623][ T8105] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.315502][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.324033][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.336492][ T8102] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 56.397025][ T8110] chnl_net:caif_netlink_parms(): no params data found [ 56.414059][ T1111] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.422545][ T1111] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.432119][ T1111] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.439296][ T1111] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.448071][ T1111] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 56.459726][ T8107] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.472468][ T8102] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 56.519890][ T8102] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 56.593222][ T8102] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 56.652882][ T8105] team0: Port device team_slave_0 added [ 56.660513][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.669345][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.677600][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.684683][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.700661][ T8107] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.724390][ T8105] team0: Port device team_slave_1 added [ 56.731112][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.740780][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.749302][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.758290][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.766539][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.775142][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.788624][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.803551][ T8097] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 56.816950][ T8097] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 56.838163][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 56.847443][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.856161][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 56.865158][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.873798][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 56.897890][ T8107] team0: Port device team_slave_0 added [ 56.912101][ T8110] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.920153][ T8110] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.927644][ T8110] device bridge_slave_0 entered promiscuous mode [ 56.936444][ T8110] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.943596][ T8110] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.951743][ T8110] device bridge_slave_1 entered promiscuous mode [ 56.962343][ T8107] team0: Port device team_slave_1 added [ 56.977208][ T8100] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.071426][ T8105] device hsr_slave_0 entered promiscuous mode [ 57.108775][ T8105] device hsr_slave_1 entered promiscuous mode [ 57.159192][ T8105] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.174737][ T8100] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.187610][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.195555][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.203509][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.211881][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.222549][ T8097] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.230896][ T8110] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.290149][ T8107] device hsr_slave_0 entered promiscuous mode [ 57.338762][ T8107] device hsr_slave_1 entered promiscuous mode [ 57.388581][ T8107] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.426147][ T8110] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.442110][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.451980][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.460816][ T3215] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.467898][ T3215] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.475824][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.484669][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.493219][ T3215] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.500301][ T3215] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.507741][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 57.517659][ T3215] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.544775][ T8107] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 57.605572][ T8107] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 57.652452][ T8107] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 57.710547][ T8107] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 57.781784][ T8102] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.805969][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 57.822820][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 57.833533][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.845750][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 57.856589][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.870785][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 57.883090][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.893339][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 57.905122][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.915945][ T8115] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 162.828309][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 162.835096][ C1] rcu: 1-...!: (10499 ticks this GP) idle=68e/1/0x4000000000000002 softirq=10425/10425 fqs=39 [ 162.845698][ C1] (t=10500 jiffies g=5933 q=33) [ 162.850633][ C1] rcu: rcu_preempt kthread starved for 10422 jiffies! g5933 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 162.861715][ C1] rcu: RCU grace-period kthread stack dump: [ 162.867596][ C1] rcu_preempt R running task 28536 10 2 0x80004000 [ 162.875492][ C1] Call Trace: [ 162.878778][ C1] __schedule+0x9a0/0xcc0 [ 162.883106][ C1] schedule+0x181/0x210 [ 162.887262][ C1] schedule_timeout+0x14f/0x240 [ 162.892097][ C1] ? run_local_timers+0x120/0x120 [ 162.897111][ C1] rcu_gp_kthread+0xed8/0x1770 [ 162.901873][ C1] kthread+0x332/0x350 [ 162.905928][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 162.911029][ C1] ? kthread_blkcg+0xe0/0xe0 [ 162.915603][ C1] ret_from_fork+0x24/0x30 [ 162.920124][ C1] NMI backtrace for cpu 1 [ 162.924440][ C1] CPU: 1 PID: 8066 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 162.931879][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 162.941919][ C1] Call Trace: [ 162.945188][ C1] [ 162.948027][ C1] dump_stack+0x1fb/0x318 [ 162.952343][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 162.957176][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 162.963315][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 162.969381][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 162.975348][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 162.981227][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 162.986328][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 162.991524][ C1] ? trace_hardirqs_off+0x74/0x80 [ 162.996538][ C1] update_process_times+0x12d/0x180 [ 163.001723][ C1] tick_sched_timer+0x263/0x420 [ 163.006558][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.012088][ C1] __hrtimer_run_queues+0x403/0x840 [ 163.017283][ C1] hrtimer_interrupt+0x38c/0xda0 [ 163.022223][ C1] ? debug_smp_processor_id+0x9/0x20 [ 163.027497][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 163.033027][ C1] apic_timer_interrupt+0xf/0x20 [ 163.037948][ C1] [ 163.040874][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 [ 163.046929][ C1] Code: 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d f4 3c cd 07 48 89 de e8 d4 01 3b 00 5b 5d c3 cc 48 8b 04 24 <65> 48 8b 0c 25 c0 1d 02 00 65 8b 15 38 84 8b 7e f7 c2 00 01 1f 00 [ 163.066520][ C1] RSP: 0018:ffffc90001b87b08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 163.074913][ C1] RAX: ffffffff81486ea4 RBX: ffffea000261e600 RCX: ffff88809a85e300 [ 163.082868][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea000261e600 [ 163.090843][ C1] RBP: ffffc90001b87b48 R08: 000000000003a728 R09: ffffed1015267e9f [ 163.098797][ C1] R10: ffffed1015267e9f R11: 0000000000000000 R12: ffff888092dd7d20 [ 163.106753][ C1] R13: dffffc0000000000 R14: 1ffff110125bafa4 R15: ffff8880a933f4e8 [ 163.114724][ C1] ? free_thread_stack+0x124/0x590 [ 163.119824][ C1] ? free_thread_stack+0x124/0x590 [ 163.124925][ C1] put_task_stack+0xa3/0x130 [ 163.129517][ C1] finish_task_switch+0x3f1/0x550 [ 163.134543][ C1] __schedule+0x9a8/0xcc0 [ 163.138869][ C1] schedule+0x181/0x210 [ 163.143013][ C1] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 163.149069][ C1] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 163.154867][ C1] schedule_hrtimeout_range+0x2a/0x40 [ 163.160223][ C1] ep_poll+0xa4d/0xe80 [ 163.164288][ C1] ? do_task_dead+0xc0/0xc0 [ 163.168779][ C1] ? __kasan_check_read+0x11/0x20 [ 163.173790][ C1] do_epoll_wait+0x1ee/0x260 [ 163.178369][ C1] __x64_sys_epoll_wait+0x9a/0xb0 [ 163.183381][ C1] do_syscall_64+0xf7/0x1c0 [ 163.187875][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 163.193751][ C1] RIP: 0033:0x7f5fc96ec943 [ 163.198155][ C1] Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 [ 163.217745][ C1] RSP: 002b:00007ffd8fe02428 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 163.226140][ C1] RAX: ffffffffffffffda RBX: 0000000000706250 RCX: 00007f5fc96ec943 [ 163.234096][ C1] RDX: 0000000000000004 RSI: 00007ffd8fe024f0 RDI: 0000000000000007 [ 163.242051][ C1] RBP: 0000000000625500 R08: 00007ffd8fe02410 R09: 00007ffd8fe5b0b8 [ 163.250007][ C1] R10: 000000000000ee42 R11: 0000000000000246 R12: 000000000071f300 [ 163.257963][ C1] R13: 00007ffd8fe03547 R14: 0000000000000005 R15: 0000000000706250