[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 22.951146][ C1] random: crng init done [ 22.955443][ C1] random: 7 urandom warning(s) missed due to ratelimiting Warning: Permanently added '10.128.10.37' (ECDSA) to the list of known hosts. 2020/07/01 21:43:19 fuzzer started 2020/07/01 21:43:19 dialing manager at 10.128.0.105:40455 2020/07/01 21:43:19 syscalls: 3106 2020/07/01 21:43:19 code coverage: enabled 2020/07/01 21:43:19 comparison tracing: enabled 2020/07/01 21:43:19 extra coverage: enabled 2020/07/01 21:43:19 setuid sandbox: enabled 2020/07/01 21:43:19 namespace sandbox: enabled 2020/07/01 21:43:19 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/01 21:43:19 fault injection: enabled 2020/07/01 21:43:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/01 21:43:19 net packet injection: enabled 2020/07/01 21:43:19 net device setup: enabled 2020/07/01 21:43:19 concurrency sanitizer: enabled 2020/07/01 21:43:19 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/01 21:43:19 USB emulation: enabled 2020/07/01 21:43:19 suppressing KCSAN reports in functions: '__ext4_new_inode' 'ext4_mb_good_group' 21:43:21 executing program 0: r0 = socket$inet_udplite(0x2, 0x2, 0x88) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = creat(&(0x7f0000000280)='./file0\x00', 0x1) write$binfmt_script(r2, &(0x7f0000000340)=ANY=[@ANYBLOB="01"], 0x3) close(r2) execve(&(0x7f0000000000)='./file0\x00', 0x0, 0x0) [ 33.565380][ T8675] IPVS: ftp: loaded support on port[0] = 21 21:43:21 executing program 1: r0 = socket(0x10, 0x3, 0x0) sendmsg(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f0000000180)="5500000018001b7000fe01b2a4a280930a60000212a84302910000003900090023110c00250000002d000500fc560000000000008008030b9d576885b16732009b1100b1df130a0000fb1200000000000000", 0x52}, {&(0x7f0000000040)="476fdc", 0x3}], 0x2}, 0x0) [ 33.623682][ T8675] chnl_net:caif_netlink_parms(): no params data found [ 33.667423][ T8675] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.674604][ T8675] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.682128][ T8675] device bridge_slave_0 entered promiscuous mode [ 33.690307][ T8675] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.698731][ T8675] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.706657][ T8675] device bridge_slave_1 entered promiscuous mode [ 33.721596][ T8675] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 33.732241][ T8675] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 33.749135][ T8675] team0: Port device team_slave_0 added [ 33.756069][ T8675] team0: Port device team_slave_1 added [ 33.769506][ T8675] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 33.776657][ T8675] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.803214][ T8675] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 33.815544][ T8675] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 33.822488][ T8675] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 33.857068][ T8675] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active 21:43:22 executing program 2: prlimit64(0x0, 0xe, &(0x7f0000000280)={0x9, 0x1ff}, 0x0) sched_setattr(0x0, &(0x7f0000000040)={0x38, 0x2, 0x4, 0x0, 0x3, 0x2, 0x0, 0x0, 0x9}, 0x0) dup(0xffffffffffffffff) syz_mount_image$vfat(&(0x7f0000000540)='vfat\x00', 0x0, 0x800000000e004, 0x1, &(0x7f0000000380)=[{&(0x7f0000000100)="eb3c906d6b66732e666174000204010002000270", 0x14}], 0x0, 0x0) getrlimit(0x2, &(0x7f0000000240)) r0 = gettid() setpriority(0x2, r0, 0x0) perf_event_open(&(0x7f000001d000)={0x0, 0x70, 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, 0x0, @perf_bp={0x0, 0xe}, 0x2}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xa) socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet_sctp6_SCTP_EVENTS(0xffffffffffffffff, 0x84, 0xb, &(0x7f0000000080)={0x0, 0x0, 0x0, 0x3}, 0xe) r1 = accept4(0xffffffffffffffff, 0x0, 0x0, 0x0) write$binfmt_elf32(r1, 0x0, 0x0) r2 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) fcntl$setstatus(r2, 0x4, 0x3800) listen(0xffffffffffffffff, 0xfffffffffffffffe) r3 = open(&(0x7f0000000080)='./file0\x00', 0x40c5, 0x0) r4 = open$dir(&(0x7f0000000380)='./file0\x00', 0x8000000000004040, 0x0) write$9p(r3, &(0x7f0000001400)="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", 0x600) sendfile(r3, r4, 0x0, 0x10000) [ 33.872518][ T8830] IPVS: ftp: loaded support on port[0] = 21 [ 33.925580][ T8675] device hsr_slave_0 entered promiscuous mode [ 33.964451][ T8675] device hsr_slave_1 entered promiscuous mode [ 34.069002][ T8852] IPVS: ftp: loaded support on port[0] = 21 [ 34.121825][ T8830] chnl_net:caif_netlink_parms(): no params data found 21:43:22 executing program 3: r0 = getpid() r1 = pidfd_open(r0, 0x0) r2 = epoll_create1(0x0) r3 = dup3(r1, r2, 0x0) setns(r3, 0x2000000) [ 34.189211][ T8830] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.203851][ T8830] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.211188][ T8830] device bridge_slave_0 entered promiscuous mode [ 34.237373][ T8830] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.253840][ T8830] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.261268][ T8830] device bridge_slave_1 entered promiscuous mode [ 34.268691][ T8675] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 34.335985][ T8675] netdevsim netdevsim0 netdevsim1: renamed from eth1 21:43:22 executing program 4: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000500)={&(0x7f0000000300)=@newlink={0x3c, 0x10, 0x439, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x1c, 0x12, 0x0, 0x1, @macsec={{0xb, 0x1, 'macsec\x00'}, {0xc, 0x2, 0x0, 0x1, [@IFLA_MACSEC_ICV_LEN={0x5, 0x3, 0x4}]}}}]}, 0x3c}}, 0x0) [ 34.388046][ T8675] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 34.461041][ T8830] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 34.500722][ T9037] IPVS: ftp: loaded support on port[0] = 21 [ 34.506969][ T8675] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 34.582287][ T8830] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 34.611052][ T8675] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.618156][ T8675] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.625473][ T8675] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.632493][ T8675] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.651958][ T49] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.661858][ T49] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.676041][ T8852] chnl_net:caif_netlink_parms(): no params data found 21:43:23 executing program 5: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f00000021c0)=@newtaction={0x68, 0x30, 0x871a15abc695fb3d, 0x0, 0x0, {}, [{0x54, 0x1, [@m_tunnel_key={0x50, 0x1, 0x0, 0x0, {{0xf, 0x1, 'tunnel_key\x00'}, {0x38, 0x2, 0x0, 0x1, [@TCA_TUNNEL_KEY_ENC_IPV4_DST={0x8, 0x4, @initdev={0xac, 0x1e, 0x0, 0x0}}, @TCA_TUNNEL_KEY_ENC_IPV4_SRC={0x8, 0x3, @local}, @TCA_TUNNEL_KEY_PARMS={0x1c, 0x2, {{}, 0x1}}, @TCA_TUNNEL_KEY_ENC_DST_PORT={0x6, 0xd, 0x4e21}]}, {0x4}}}]}]}, 0x68}}, 0x0) [ 34.689813][ T9088] IPVS: ftp: loaded support on port[0] = 21 [ 34.694445][ T8830] team0: Port device team_slave_0 added [ 34.731052][ T8830] team0: Port device team_slave_1 added [ 34.826757][ T9037] chnl_net:caif_netlink_parms(): no params data found [ 34.843857][ T8830] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.850830][ T8830] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 34.877130][ T8830] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.893468][ T9269] IPVS: ftp: loaded support on port[0] = 21 [ 34.895307][ T8675] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.925976][ T8852] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.933011][ T8852] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.941264][ T8852] device bridge_slave_0 entered promiscuous mode [ 34.948579][ T8830] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 34.955720][ T8830] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 34.981872][ T8830] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.017041][ T8852] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.026337][ T8852] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.034124][ T8852] device bridge_slave_1 entered promiscuous mode [ 35.052190][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 35.060916][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.072649][ T8675] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.092203][ T8852] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 35.111277][ T9088] chnl_net:caif_netlink_parms(): no params data found [ 35.120711][ T9037] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.128038][ T9037] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.135919][ T9037] device bridge_slave_0 entered promiscuous mode [ 35.143224][ T8852] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 35.175133][ T8830] device hsr_slave_0 entered promiscuous mode [ 35.223687][ T8830] device hsr_slave_1 entered promiscuous mode [ 35.263497][ T8830] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 35.271045][ T8830] Cannot create hsr debugfs directory [ 35.285557][ T9037] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.292609][ T9037] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.301164][ T9037] device bridge_slave_1 entered promiscuous mode [ 35.319049][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 35.327543][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.336200][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.343300][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.380355][ T8852] team0: Port device team_slave_0 added [ 35.388216][ T8852] team0: Port device team_slave_1 added [ 35.406092][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 35.415476][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 35.424506][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.431541][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 35.441666][ T9037] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 35.472726][ T3918] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 35.481552][ T9269] chnl_net:caif_netlink_parms(): no params data found [ 35.495068][ T8852] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.502014][ T8852] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.528353][ T8852] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.540335][ T9037] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 35.557263][ T8830] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 35.617099][ T8852] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.624191][ T8852] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.650129][ T8852] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.672071][ T8830] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 35.726594][ T8830] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 35.775216][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 35.788953][ T9037] team0: Port device team_slave_0 added [ 35.795481][ T9088] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.802527][ T9088] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.811499][ T9088] device bridge_slave_0 entered promiscuous mode [ 35.822272][ T8830] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 35.925270][ T8852] device hsr_slave_0 entered promiscuous mode [ 35.963468][ T8852] device hsr_slave_1 entered promiscuous mode [ 36.023633][ T8852] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 36.031230][ T8852] Cannot create hsr debugfs directory [ 36.037766][ T9037] team0: Port device team_slave_1 added [ 36.052733][ T9037] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 36.060877][ T9037] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.087175][ T9037] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 36.100038][ T9037] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 36.107374][ T9037] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.133853][ T9037] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.145236][ T9088] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.152266][ T9088] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.160003][ T9088] device bridge_slave_1 entered promiscuous mode [ 36.183459][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 36.191735][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.212372][ T9088] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 36.233437][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.241307][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 36.250271][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.259136][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 36.267738][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.304422][ T9037] device hsr_slave_0 entered promiscuous mode [ 36.343324][ T9037] device hsr_slave_1 entered promiscuous mode [ 36.383457][ T9037] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 36.391054][ T9037] Cannot create hsr debugfs directory [ 36.400669][ T8675] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 36.411626][ T8675] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 36.420341][ T9088] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 36.444769][ T9269] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.451832][ T9269] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.461843][ T9269] device bridge_slave_0 entered promiscuous mode [ 36.471865][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 36.480405][ T3934] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.497882][ T9269] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.505090][ T9269] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.512639][ T9269] device bridge_slave_1 entered promiscuous mode [ 36.523422][ T1511] ================================================================== [ 36.531513][ T1511] BUG: KCSAN: data-race in copy_process / copy_process [ 36.533358][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 36.538364][ T1511] [ 36.546612][ T49] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 36.547938][ T1511] write to 0xffffffff8927a410 of 4 bytes by task 7 on cpu 1: [ 36.562535][ T1511] copy_process+0x2e84/0x3300 [ 36.567200][ T1511] _do_fork+0xf1/0x660 [ 36.571240][ T1511] kernel_thread+0x85/0xb0 [ 36.575644][ T1511] call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.581514][ T1511] process_one_work+0x3e1/0x9a0 [ 36.586333][ T1511] worker_thread+0x665/0xbe0 [ 36.590907][ T1511] kthread+0x20d/0x230 [ 36.594946][ T1511] ret_from_fork+0x1f/0x30 [ 36.599325][ T1511] [ 36.601625][ T1511] read to 0xffffffff8927a410 of 4 bytes by task 1511 on cpu 0: [ 36.609138][ T1511] copy_process+0xac4/0x3300 [ 36.613696][ T1511] _do_fork+0xf1/0x660 [ 36.617735][ T1511] kernel_thread+0x85/0xb0 [ 36.622120][ T1511] call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.627983][ T1511] process_one_work+0x3e1/0x9a0 [ 36.632806][ T1511] worker_thread+0x665/0xbe0 [ 36.637366][ T1511] kthread+0x20d/0x230 [ 36.641406][ T1511] ret_from_fork+0x1f/0x30 [ 36.645785][ T1511] [ 36.648096][ T1511] Reported by Kernel Concurrency Sanitizer on: [ 36.654218][ T1511] CPU: 0 PID: 1511 Comm: kworker/u4:3 Not tainted 5.8.0-rc3-syzkaller #0 [ 36.662594][ T1511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.672628][ T1511] Workqueue: events_unbound call_usermodehelper_exec_work [ 36.679703][ T1511] ================================================================== [ 36.687740][ T1511] Kernel panic - not syncing: panic_on_warn set ... [ 36.694299][ T1511] CPU: 0 PID: 1511 Comm: kworker/u4:3 Not tainted 5.8.0-rc3-syzkaller #0 [ 36.702711][ T1511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.712749][ T1511] Workqueue: events_unbound call_usermodehelper_exec_work [ 36.719839][ T1511] Call Trace: [ 36.723103][ T1511] dump_stack+0x10f/0x19d [ 36.727939][ T1511] panic+0x207/0x64a [ 36.731804][ T1511] ? vprintk_emit+0x44a/0x4f0 [ 36.736471][ T1511] kcsan_report+0x684/0x690 [ 36.740944][ T1511] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 36.746477][ T1511] ? copy_process+0xac4/0x3300 [ 36.751211][ T1511] ? _do_fork+0xf1/0x660 [ 36.755422][ T1511] ? kernel_thread+0x85/0xb0 [ 36.759982][ T1511] ? call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.766031][ T1511] ? process_one_work+0x3e1/0x9a0 [ 36.771039][ T1511] ? worker_thread+0x665/0xbe0 [ 36.775807][ T1511] ? kthread+0x20d/0x230 [ 36.780025][ T1511] ? ret_from_fork+0x1f/0x30 [ 36.784594][ T1511] ? debug_smp_processor_id+0x18/0x20 [ 36.789945][ T1511] ? copy_creds+0x280/0x350 [ 36.794423][ T1511] ? copy_creds+0x280/0x350 [ 36.798914][ T1511] kcsan_setup_watchpoint+0x453/0x4d0 [ 36.804263][ T1511] ? copy_creds+0x280/0x350 [ 36.808737][ T1511] copy_process+0xac4/0x3300 [ 36.813315][ T1511] ? check_preempt_wakeup+0x1cb/0x370 [ 36.818677][ T1511] ? proc_cap_handler+0x280/0x280 [ 36.823692][ T1511] _do_fork+0xf1/0x660 [ 36.827737][ T1511] ? check_preemption_disabled+0x51/0x140 [ 36.833430][ T1511] ? proc_cap_handler+0x280/0x280 [ 36.838440][ T1511] kernel_thread+0x85/0xb0 [ 36.842841][ T1511] ? proc_cap_handler+0x280/0x280 [ 36.847842][ T1511] call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.853709][ T1511] process_one_work+0x3e1/0x9a0 [ 36.858531][ T1511] worker_thread+0x665/0xbe0 [ 36.863097][ T1511] ? finish_task_switch+0x8b/0x270 [ 36.868185][ T1511] ? process_one_work+0x9a0/0x9a0 [ 36.873182][ T1511] kthread+0x20d/0x230 [ 36.877223][ T1511] ? process_one_work+0x9a0/0x9a0 [ 36.882227][ T1511] ? kthread_blkcg+0x80/0x80 [ 36.886796][ T1511] ret_from_fork+0x1f/0x30 [ 36.892316][ T1511] Kernel Offset: disabled [ 36.896638][ T1511] Rebooting in 86400 seconds..