[ 42.469062][ T25] audit: type=1800 audit(1575430801.212:26): pid=7987 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.498392][ T25] audit: type=1800 audit(1575430801.212:27): pid=7987 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.518899][ T25] audit: type=1800 audit(1575430801.212:28): pid=7987 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. [ 43.366777][ T25] audit: type=1800 audit(1575430802.142:29): pid=7987 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 '10.128.1.0' (ECDSA) to the list of known hosts. 2019/12/04 03:40:09 fuzzer started 2019/12/04 03:40:10 dialing manager at 10.128.0.26:42111 2019/12/04 03:40:11 syscalls: 2689 2019/12/04 03:40:11 code coverage: enabled 2019/12/04 03:40:11 comparison tracing: enabled 2019/12/04 03:40:11 extra coverage: extra coverage is not supported by the kernel 2019/12/04 03:40:11 setuid sandbox: enabled 2019/12/04 03:40:11 namespace sandbox: enabled 2019/12/04 03:40:11 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 03:40:11 fault injection: enabled 2019/12/04 03:40:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 03:40:11 net packet injection: enabled 2019/12/04 03:40:11 net device setup: enabled 2019/12/04 03:40:11 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 03:40:11 devlink PCI setup: PCI device 0000:00:10.0 is not available 03:40:12 executing program 0: 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$inet6(0xa, 0x3, 0x20000000021) socket$packet(0x11, 0x3, 0x300) perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0) perf_event_open(0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) syz_open_dev$mice(0x0, 0x0, 0x0) socket$xdp(0x2c, 0x3, 0x0) open(0x0, 0x0, 0x0) ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) socket$inet6_sctp(0xa, 0x5, 0x84) ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) sendmsg$netlink(0xffffffffffffffff, 0x0, 0x0) getsockopt$sock_cred(0xffffffffffffffff, 0x1, 0x11, 0x0, 0x0) open(0x0, 0x0, 0x0) getresuid(&(0x7f0000000d00), &(0x7f0000000d40), 0x0) sendmmsg$unix(0xffffffffffffffff, 0x0, 0x0, 0x2) shmctl$IPC_SET(0x0, 0x1, 0x0) syz_open_dev$mice(0x0, 0x0, 0x28100) socket$pptp(0x18, 0x1, 0x2) open(0x0, 0x0, 0x0) socket$xdp(0x2c, 0x3, 0x0) getdents64(0xffffffffffffffff, 0x0, 0x600) socket$inet6_sctp(0xa, 0x5, 0x84) ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0) lstat(0x0, 0x0) sendmsg$netlink(0xffffffffffffffff, &(0x7f0000001900)={&(0x7f0000000000), 0xc, 0x0}, 0x4000000) open(0x0, 0x0, 0x0) open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getresuid(0x0, 0x0, 0x0) shmctl$IPC_SET(0x0, 0x1, &(0x7f00000001c0)={{0x0, 0x0, 0x0, 0x0, 0xee01, 0x80}, 0xa99, 0x6, 0x0, 0x0, 0x0, 0x0, 0x200}) setsockopt$packet_fanout(0xffffffffffffffff, 0x107, 0x12, &(0x7f0000001440), 0x4) connect$inet6(r0, &(0x7f0000000040)={0xa, 0x0, 0x0, @local, 0x9}, 0x1c) sendto$inet6(r0, &(0x7f0000000000), 0xff77, 0x0, 0x0, 0x4d97) 03:40:12 executing program 1: mkdir(&(0x7f0000000040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000280)=ANY=[@ANYBLOB="1500000065ffff0180000008003950323030302e4cc74502f987c2ced6504df6ead74ed8a60ab5b63c48d738934f63e98b4b2a3d27a7082dbb78abd501ba3da80b856445ab100621d623f543bef2d9f066eb86cd89e9b08e3f5972fe9ca162b123e19268c89c9dd81c796f27f537cc5a3fb54aff8eaff4f6b5e1ba705b96a6711d4679079d0000000000000000000000c2beec93979184e4ca09b275c3208f0a208aa34fafdb887631862b01b60846c84cb873557f7c21e0c9adf876e8f63a3f64b426e61ea9d7a0aadb4a118192c88d4cc4c3ed804fbdebdbc852d3cc5fc1cbb6d44480020000002e9114ad47f6034a20d800"/254], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000200)='9p\x00', 0x0, &(0x7f0000000880)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}}) r3 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) symlinkat(&(0x7f00000002c0)='./file0/file0\x00', r3, &(0x7f0000000180)='./file0/file0\x00') r4 = open(&(0x7f0000000300)='.\x00', 0x0, 0x0) symlinkat(&(0x7f00000002c0)='./file0/file0\x00', r4, &(0x7f0000000180)='./file0/file0\x00') syzkaller login: [ 53.376346][ T8153] IPVS: ftp: loaded support on port[0] = 21 [ 53.541995][ T8153] chnl_net:caif_netlink_parms(): no params data found [ 53.561881][ T8156] IPVS: ftp: loaded support on port[0] = 21 [ 53.587776][ T8153] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.597327][ T8153] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.606332][ T8153] device bridge_slave_0 entered promiscuous mode [ 53.617382][ T8153] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.625059][ T8153] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.634010][ T8153] device bridge_slave_1 entered promiscuous mode 03:40:12 executing program 2: r0 = bpf$MAP_CREATE(0x0, &(0x7f00008a7fe4)={0x5, 0x1, 0x6, 0x28}, 0x1b) bpf$BPF_GET_MAP_INFO(0xf, &(0x7f00002ff000)={r0, 0x6d, &(0x7f00007dc000)}, 0x10) [ 53.663601][ T8153] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 53.677708][ T8153] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 53.724814][ T8153] team0: Port device team_slave_0 added [ 53.750690][ T8153] team0: Port device team_slave_1 added 03:40:12 executing program 3: r0 = socket(0x10, 0x80002, 0x0) bind$netlink(r0, &(0x7f0000000080)={0x10, 0x0, 0x0, 0xc1942639073428ff}, 0xc) r1 = socket$netlink(0x10, 0x3, 0x8000000004) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000300)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) writev(r1, &(0x7f0000000040)=[{&(0x7f0000000480)="580000001400192340834b80043f679a10ffff7f4e24ca945f64009400050028925aaa000000000000008400f0fffeff2c707f8f00ff050000000010000100090a00000000000000005f9fae9da780e26e68e0c6999b4dc4", 0x58}], 0x1) [ 53.821515][ T8153] device hsr_slave_0 entered promiscuous mode [ 53.859722][ T8153] device hsr_slave_1 entered promiscuous mode [ 53.956756][ T8158] IPVS: ftp: loaded support on port[0] = 21 [ 54.034530][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 54.076256][ T8161] IPVS: ftp: loaded support on port[0] = 21 [ 54.095570][ T8153] netdevsim netdevsim0 netdevsim0: renamed from eth0 03:40:12 executing program 4: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) mount$bpf(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000180)='bpf\x00', 0x0, 0x0) mount$overlay(0x400000, &(0x7f0000000100)='./file0\x00', &(0x7f00000001c0)='overlay\x00', 0x0, &(0x7f0000000040)=ANY=[@ANYBLOB=',lowerdir=.:file0']) open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0) chdir(&(0x7f0000000080)='./file0\x00') r0 = open(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) ioctl$MON_IOCT_RING_SIZE(r0, 0xc0189436, 0x760000) [ 54.161037][ T8153] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 54.221803][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.239100][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.259532][ T8156] device bridge_slave_0 entered promiscuous mode [ 54.284292][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.310392][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.318419][ T8156] device bridge_slave_1 entered promiscuous mode [ 54.340419][ T8153] netdevsim netdevsim0 netdevsim2: renamed from eth2 03:40:13 executing program 5: r0 = add_key$user(&(0x7f00000000c0)='user\x00', &(0x7f0000000440)={'syz'}, &(0x7f0000000380)="585ccbe4ed83b836c1a6474914dc55e72206297b6895b66147b3c7218a9169a85ea0bdc9e1587a050000000000000042e33089754c8107c3cd3923dd4a71c2ff06007b6b4816122d2550829eaa9435c99926022b8753a188748c569f435fb3bae96efb74b50ec93c152f5e8e198a29e5c0d0c60000ce0637ce0000b4ec24c53d3d661ff5ff70e48884ca000018cea71fcfacf40d32e4b58a8d2725561f6110fd7b06f90b5274cc5c1e298a16324fe27da2a9d5ba9ff3c009d308bd73f4772539", 0x227, 0xfffffffffffffffe) r1 = add_key$user(&(0x7f0000000200)='user\x00', &(0x7f0000000040)={'syz', 0x1}, &(0x7f0000000100)="01", 0x1, 0xfffffffffffffffd) r2 = add_key$keyring(&(0x7f0000000180)='keyring\x00', &(0x7f0000000200)={'\x86yz'}, 0x0, 0x0, 0xffffffffffffffff) r3 = add_key$user(&(0x7f00000004c0)='user\x00', &(0x7f0000000500)={'syz', 0x1}, &(0x7f00000005c0)='*', 0x1, r2) keyctl$dh_compute(0x17, &(0x7f0000000000)={r1, r0, r3}, &(0x7f0000000280)=""/249, 0xf9, &(0x7f0000000580)={&(0x7f0000000540)={'sha256\x00'}}) [ 54.446913][ T8153] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 54.501210][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 54.514341][ T8164] IPVS: ftp: loaded support on port[0] = 21 [ 54.521878][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 54.610236][ T8161] chnl_net:caif_netlink_parms(): no params data found [ 54.621524][ T8166] IPVS: ftp: loaded support on port[0] = 21 [ 54.644085][ T8156] team0: Port device team_slave_0 added [ 54.653999][ T8156] team0: Port device team_slave_1 added [ 54.671932][ T8158] chnl_net:caif_netlink_parms(): no params data found [ 54.697568][ T8161] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.705634][ T8161] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.713363][ T8161] device bridge_slave_0 entered promiscuous mode [ 54.741644][ T8161] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.751046][ T8161] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.758793][ T8161] device bridge_slave_1 entered promiscuous mode [ 54.830393][ T8156] device hsr_slave_0 entered promiscuous mode [ 54.879203][ T8156] device hsr_slave_1 entered promiscuous mode [ 54.938870][ T8156] debugfs: Directory 'hsr0' with parent '/' already present! [ 54.960910][ T8158] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.968424][ T8158] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.976747][ T8158] device bridge_slave_0 entered promiscuous mode [ 54.985085][ T8161] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.016912][ T8156] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 55.071854][ T8158] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.079447][ T8158] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.087146][ T8158] device bridge_slave_1 entered promiscuous mode [ 55.096394][ T8161] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.133139][ T8156] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 55.180566][ T8156] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 55.234741][ T8156] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 55.317129][ T8161] team0: Port device team_slave_0 added [ 55.323196][ T8166] chnl_net:caif_netlink_parms(): no params data found [ 55.349703][ T8158] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.360734][ T8158] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.373283][ T8161] team0: Port device team_slave_1 added [ 55.430430][ T8161] device hsr_slave_0 entered promiscuous mode [ 55.479132][ T8161] device hsr_slave_1 entered promiscuous mode [ 55.518850][ T8161] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.538117][ T8158] team0: Port device team_slave_0 added [ 55.551209][ T8164] chnl_net:caif_netlink_parms(): no params data found [ 55.563732][ T8158] team0: Port device team_slave_1 added [ 55.606767][ T8166] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.614433][ T8166] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.623221][ T8166] device bridge_slave_0 entered promiscuous mode [ 55.631247][ T8166] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.638298][ T8166] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.646588][ T8166] device bridge_slave_1 entered promiscuous mode [ 55.670502][ T8164] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.677746][ T8164] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.685478][ T8164] device bridge_slave_0 entered promiscuous mode [ 55.696838][ T8164] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.704024][ T8164] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.711797][ T8164] device bridge_slave_1 entered promiscuous mode [ 55.720490][ T8153] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.746943][ T8166] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.792846][ T8158] device hsr_slave_0 entered promiscuous mode [ 55.850086][ T8158] device hsr_slave_1 entered promiscuous mode [ 55.898800][ T8158] debugfs: Directory 'hsr0' with parent '/' already present! [ 55.913940][ T8166] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.936383][ T8153] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.946038][ T8164] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.957112][ T8164] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.974271][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 55.984481][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.002547][ T8166] team0: Port device team_slave_0 added [ 56.010826][ T8166] team0: Port device team_slave_1 added [ 56.031507][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.043981][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.052638][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.059833][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.067926][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.076893][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.085560][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.092664][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.100716][ T8161] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 56.151515][ T8161] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 56.192000][ T8161] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 56.245281][ T8161] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 56.314003][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 56.324552][ T8164] team0: Port device team_slave_0 added [ 56.334213][ T8164] team0: Port device team_slave_1 added [ 56.371833][ T8166] device hsr_slave_0 entered promiscuous mode [ 56.399122][ T8166] device hsr_slave_1 entered promiscuous mode [ 56.448950][ T8166] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.488734][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.497192][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.506400][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 56.515009][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.524044][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 56.547093][ T8153] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 56.559501][ T8153] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 56.573317][ T8158] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 56.610856][ T8158] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 56.650558][ T8158] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 56.690712][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 56.699401][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.707612][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 56.716149][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 56.724945][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 56.733460][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 56.780357][ T8164] device hsr_slave_0 entered promiscuous mode [ 56.849153][ T8164] device hsr_slave_1 entered promiscuous mode [ 56.888851][ T8164] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.904746][ T8158] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 56.960731][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.005255][ T8156] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.022529][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.031826][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.045694][ T8161] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.059731][ T8153] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.077646][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.086762][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.101518][ T8156] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.118877][ T8166] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 57.151694][ T8164] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 57.214914][ T8164] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 57.260789][ T8164] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 57.301564][ T8164] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 57.351985][ T8166] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 57.404576][ T8166] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 162.388609][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 162.395372][ C1] rcu: 1-...!: (10499 ticks this GP) idle=e6a/1/0x4000000000000002 softirq=10770/10770 fqs=148 [ 162.406066][ C1] (t=10501 jiffies g=6141 q=198) [ 162.411080][ C1] rcu: rcu_preempt kthread starved for 10206 jiffies! g6141 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 162.422175][ C1] rcu: RCU grace-period kthread stack dump: [ 162.428055][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 162.435957][ C1] Call Trace: [ 162.439240][ C1] __schedule+0x9a0/0xcc0 [ 162.443598][ C1] schedule+0x181/0x210 [ 162.447752][ C1] schedule_timeout+0x14f/0x240 [ 162.452597][ C1] ? run_local_timers+0x120/0x120 [ 162.457613][ C1] rcu_gp_kthread+0xed8/0x1770 [ 162.462380][ C1] kthread+0x332/0x350 [ 162.466434][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 162.471533][ C1] ? kthread_blkcg+0xe0/0xe0 [ 162.476109][ C1] ret_from_fork+0x24/0x30 [ 162.480523][ C1] NMI backtrace for cpu 1 [ 162.484842][ C1] CPU: 1 PID: 149 Comm: kworker/u4:3 Not tainted 5.4.0-syzkaller #0 [ 162.492840][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 162.502880][ C1] Workqueue: events_unbound fsnotify_connector_destroy_workfn [ 162.510305][ C1] Call Trace: [ 162.513561][ C1] [ 162.516420][ C1] dump_stack+0x1fb/0x318 [ 162.520765][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 162.525596][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 162.531815][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 162.537855][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 162.543809][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 162.549673][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 162.554757][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 162.559928][ C1] ? trace_hardirqs_off+0x74/0x80 [ 162.564938][ C1] update_process_times+0x12d/0x180 [ 162.570109][ C1] tick_sched_timer+0x263/0x420 [ 162.574930][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 162.580447][ C1] __hrtimer_run_queues+0x403/0x840 [ 162.585629][ C1] hrtimer_interrupt+0x38c/0xda0 [ 162.590548][ C1] ? debug_smp_processor_id+0x9/0x20 [ 162.595816][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 162.601335][ C1] apic_timer_interrupt+0xf/0x20 [ 162.606242][ C1] [ 162.609166][ C1] RIP: 0010:free_thread_stack+0x124/0x590 [ 162.614854][ C1] Code: ff 48 c1 e8 06 48 83 e0 c0 48 bf 00 00 00 00 00 ea ff ff 48 01 c7 be 03 00 00 00 e8 06 a2 60 00 e9 5d 04 00 00 e8 5c 2d 2e 00 <48> 89 df 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 [ 162.634448][ C1] RSP: 0018:ffffc900014f7908 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 162.642847][ C1] RAX: ffffffff81486ea4 RBX: ffffea000234dc80 RCX: ffff8880a96b6440 [ 162.650802][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea000234dc80 [ 162.658782][ C1] RBP: ffffc900014f7940 R08: dffffc0000000000 R09: fffffbfff120248a [ 162.666748][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88809871c3a0 [ 162.674716][ C1] R13: dffffc0000000000 R14: 1ffff110130e3874 R15: ffff8880a8773428 [ 162.682696][ C1] ? free_thread_stack+0x124/0x590 [ 162.687788][ C1] ? free_thread_stack+0x124/0x590 [ 162.692873][ C1] put_task_stack+0xa3/0x130 [ 162.697437][ C1] finish_task_switch+0x3f1/0x550 [ 162.702440][ C1] __schedule+0x9a8/0xcc0 [ 162.706746][ C1] ? ___preempt_schedule+0x16/0x18 [ 162.711852][ C1] preempt_schedule+0xdb/0x120 [ 162.716600][ C1] ___preempt_schedule+0x16/0x18 [ 162.721511][ C1] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 162.727127][ C1] __call_srcu+0x7ab/0xb00 [ 162.731520][ C1] __synchronize_srcu+0x1cf/0x260 [ 162.736524][ C1] ? rcu_read_lock_any_held+0x1a0/0x1a0 [ 162.742054][ C1] synchronize_srcu+0x2cb/0x2f0 [ 162.746876][ C1] fsnotify_connector_destroy_workfn+0x44/0xb0 [ 162.753001][ C1] process_one_work+0x7ef/0x10d0 [ 162.757917][ C1] worker_thread+0xc01/0x1630 [ 162.762575][ C1] kthread+0x332/0x350 [ 162.766624][ C1] ? rcu_lock_release+0x30/0x30 [ 162.771445][ C1] ? kthread_blkcg+0xe0/0xe0 [ 162.776007][ C1] ret_from_fork+0x24/0x30