Warning: Permanently added '10.128.1.125' (ECDSA) to the list of known hosts. 2021/03/25 22:10:47 fuzzer started 2021/03/25 22:10:48 dialing manager at 10.128.0.163:39723 2021/03/25 22:10:48 syscalls: 3557 2021/03/25 22:10:48 code coverage: enabled 2021/03/25 22:10:48 comparison tracing: enabled 2021/03/25 22:10:48 extra coverage: enabled 2021/03/25 22:10:48 setuid sandbox: enabled 2021/03/25 22:10:48 namespace sandbox: enabled 2021/03/25 22:10:48 Android sandbox: /sys/fs/selinux/policy does not exist 2021/03/25 22:10:48 fault injection: enabled 2021/03/25 22:10:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/03/25 22:10:48 net packet injection: enabled 2021/03/25 22:10:48 net device setup: enabled 2021/03/25 22:10:48 concurrency sanitizer: enabled 2021/03/25 22:10:48 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/03/25 22:10:48 USB emulation: enabled 2021/03/25 22:10:48 hci packet injection: enabled 2021/03/25 22:10:48 wifi device emulation: enabled 2021/03/25 22:10:48 802.15.4 emulation: enabled 2021/03/25 22:10:49 suppressing KCSAN reports in functions: '__ext4_new_inode' 'ext4_writepages' 'ext4_mb_good_group' '__xa_clear_mark' 'generic_write_end' 'pcpu_alloc' '__send_signal' 'blk_mq_sched_dispatch_requests' 'ext4_free_inode' 'complete_signal' 'alloc_pid' 'do_sys_poll' 'wbt_issue' 'blk_mq_request_bypass_insert' 'exit_mm' 'do_nanosleep' 'xas_clear_mark' 2021/03/25 22:10:49 fetching corpus: 0, signal 0/2000 (executing program) 2021/03/25 22:10:49 fetching corpus: 45, signal 21558/25231 (executing program) 2021/03/25 22:10:49 fetching corpus: 95, signal 31405/36724 (executing program) 2021/03/25 22:10:49 fetching corpus: 145, signal 43811/50544 (executing program) 2021/03/25 22:10:49 fetching corpus: 195, signal 51910/60039 (executing program) 2021/03/25 22:10:49 fetching corpus: 245, signal 57239/66744 (executing program) 2021/03/25 22:10:49 fetching corpus: 295, signal 62620/73390 (executing program) 2021/03/25 22:10:49 fetching 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corpus: 2143, signal 174488/204767 (executing program) 2021/03/25 22:10:52 fetching corpus: 2193, signal 176137/206573 (executing program) 2021/03/25 22:10:52 fetching corpus: 2243, signal 177730/208252 (executing program) 2021/03/25 22:10:52 fetching corpus: 2293, signal 179549/210077 (executing program) [ 35.872015][ T8370] ================================================================== [ 35.880112][ T8370] BUG: KCSAN: data-race in check_kill_permission / futex_wait_queue_me [ 35.888340][ T8370] [ 35.890658][ T8370] write to 0xffff88810b4a602c of 4 bytes by task 8379 on cpu 0: [ 35.899239][ T8370] futex_wait_queue_me+0x186/0x250 [ 35.904349][ T8370] futex_wait+0x145/0x400 [ 35.908684][ T8370] do_futex+0x1062/0x1cd0 [ 35.913048][ T8370] __se_sys_futex+0x2a8/0x390 [ 35.917729][ T8370] __x64_sys_futex+0x74/0x80 [ 35.922326][ T8370] do_syscall_64+0x39/0x80 [ 35.926754][ T8370] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 35.932639][ T8370] [ 35.934954][ T8370] read to 0xffff88810b4a602c of 4 bytes by task 8370 on cpu 1: [ 35.942483][ T8370] check_kill_permission+0x44/0x2d0 [ 35.947680][ T8370] do_send_specific+0x7f/0x100 [ 35.952427][ T8370] __x64_sys_tgkill+0x108/0x140 [ 35.957266][ T8370] do_syscall_64+0x39/0x80 [ 35.961684][ T8370] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 35.967662][ T8370] 2021/03/25 22:10:52 fetching corpus: 2343, signal 181812/212112 (executing program) [ 35.969964][ T8370] Reported by Kernel Concurrency Sanitizer on: [ 35.976088][ T8370] CPU: 1 PID: 8370 Comm: syz-fuzzer Not tainted 5.12.0-rc4-syzkaller #0 [ 35.984401][ T8370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.994477][ T8370] ================================================================== 2021/03/25 22:10:52 fetching corpus: 2391, signal 183729/213889 (executing program) 2021/03/25 22:10:52 fetching corpus: 2440, signal 185454/215615 (executing program) 2021/03/25 22:10:53 fetching corpus: 2490, signal 187238/217319 (executing 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2021/03/25 22:10:58 fetching corpus: 5425, signal 263232/266240 (executing program) 2021/03/25 22:10:59 starting 6 fuzzer processes 22:10:59 executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x18, 0x3, &(0x7f00000000c0)=ANY=[@ANYBLOB="18000000feff000000000000d300000095"], &(0x7f0000000080)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, [], 0x0, 0x2, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x78) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000140)={&(0x7f0000000100)='sys_enter\x00', r0}, 0x10) sync_file_range(0xffffffffffffffff, 0x0, 0x0, 0x0) 22:11:00 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kvm\x00', 0x0, 0x0) ioctl$KVM_CREATE_VM(r0, 0xae03, 0x21) 22:11:00 executing program 2: prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x80000002, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0}, {&(0x7f0000000180)="6600000000000001601b05b1f147a8378f36460a812c66d3f335066ee1d05e4dde63ffd749dd139ab4fc1941744c664f243c87ac090c73b8e7aeee3fec20bd56a261bfbc9566cf75c9fee7de68f26d73315e855ec29d7309d9856d0301faab0ba762ec39e616", 0x66}], 0x4, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x5) tkill(r0, 0x34) ptrace$cont(0x18, r0, 0x0, 0x0) sendmsg$inet(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)=[{&(0x7f0000000080)="4dc3", 0x2}], 0x1}, 0x0) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) exit_group(0x0) 22:11:00 executing program 3: r0 = syz_init_net_socket$netrom(0x6, 0x5, 0x0) ioctl$sock_netrom_SIOCDELRT(r0, 0x891a, 0x0) 22:11:00 executing program 4: r0 = add_key$keyring(&(0x7f00000011c0)='keyring\x00', &(0x7f0000001200)={'syz', 0x0}, 0x0, 0x0, 0xfffffffffffffffd) r1 = add_key$keyring(&(0x7f0000001240)='keyring\x00', &(0x7f0000001280)={'syz', 0x1}, 0x0, 0x0, r0) keyctl$assume_authority(0x10, r1) 22:11:00 executing program 5: perf_event_open(&(0x7f0000000180)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x203, 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) socketpair(0x1, 0x1, 0x0, &(0x7f0000000140)={0x0, 0x0}) recvmsg$kcm(0xffffffffffffffff, &(0x7f0000000480)={0x0, 0x0, &(0x7f0000000380), 0x10000023, &(0x7f00000002c0)=""/77, 0x42e}, 0x0) recvmsg$kcm(r0, &(0x7f0000000200)={&(0x7f0000000040)=@ax25, 0xfe76, &(0x7f0000000000)=[{&(0x7f0000000080)=""/151, 0x6129d00b}], 0x1, &(0x7f00000001c0)=""/4, 0x10036, 0x7301}, 0x3f9c) sendmsg(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000100), 0x47, &(0x7f0000000000)}, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='memory.events\x00', 0x26e1, 0x0) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000003c0)={0xffffffffffffffff, 0x0, 0x0}, 0x10) perf_event_open(&(0x7f0000000180)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1ff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffc, 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, 0x5}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='memory.events\x00', 0x7a05, 0x1700) close(0xffffffffffffffff) ioctl$TUNGETIFF(0xffffffffffffffff, 0x800454d2, 0x0) write$cgroup_int(r2, &(0x7f0000000200), 0x400c00) recvmsg$kcm(r0, &(0x7f0000005e40)={&(0x7f0000005800)=@can, 0x80, &(0x7f0000005cc0)=[{&(0x7f0000005880)=""/229, 0xe5}, {&(0x7f0000005980)=""/198, 0xc6}, {&(0x7f00000005c0)=""/223, 0xdf}, {&(0x7f0000005b80)=""/153, 0x99}, {&(0x7f0000005c40)=""/126, 0x7e}], 0x5, &(0x7f0000005d40)=""/239, 0xef}, 0x2020) bpf$BPF_GET_BTF_INFO(0xf, &(0x7f0000000ec0)={0xffffffffffffffff, 0xfffffffffffffd9f, &(0x7f0000000e80)={&(0x7f00000002c0)=""/16, 0xc}}, 0xfffffffffffffeb4) [ 44.394267][ T8394] IPVS: ftp: loaded support on port[0] = 21 [ 44.460658][ T8394] chnl_net:caif_netlink_parms(): no params data found [ 44.489341][ T8394] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.496577][ T8394] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.506395][ T8394] device bridge_slave_0 entered promiscuous mode [ 44.515371][ T8394] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.523176][ T8394] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.535903][ T8394] device bridge_slave_1 entered promiscuous mode [ 44.552104][ T8394] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 44.563292][ T8394] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 44.580445][ T8396] IPVS: ftp: loaded support on port[0] = 21 [ 44.581516][ T8394] team0: Port device team_slave_0 added [ 44.594199][ T8394] team0: Port device team_slave_1 added [ 44.608254][ T8394] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.615248][ T8394] 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. [ 44.641289][ T8394] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.654784][ T8394] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.661921][ T8394] 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. [ 44.688397][ T8394] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 44.720592][ T8394] device hsr_slave_0 entered promiscuous mode [ 44.731744][ T8394] device hsr_slave_1 entered promiscuous mode [ 44.748503][ T8398] IPVS: ftp: loaded support on port[0] = 21 [ 44.824994][ T8396] chnl_net:caif_netlink_parms(): no params data found [ 44.870096][ T8396] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.877229][ T8396] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.884857][ T8396] device bridge_slave_0 entered promiscuous mode [ 44.909217][ T8396] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.916574][ T8396] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.924816][ T8396] device bridge_slave_1 entered promiscuous mode [ 44.965259][ T8398] chnl_net:caif_netlink_parms(): no params data found [ 44.988905][ T8400] IPVS: ftp: loaded support on port[0] = 21 [ 44.999600][ T8394] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 45.008838][ T8394] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 45.019316][ T8396] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.031445][ T8396] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.040904][ T8394] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 45.057439][ T8394] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 45.102542][ T8398] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.109655][ T8398] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.125301][ T8398] device bridge_slave_0 entered promiscuous mode [ 45.155966][ T8396] team0: Port device team_slave_0 added [ 45.163174][ T8394] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.170246][ T8394] bridge0: port 2(bridge_slave_1) entered forwarding state [ 45.177605][ T8394] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.184691][ T8394] bridge0: port 1(bridge_slave_0) entered forwarding state [ 45.197451][ T8398] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.205419][ T8398] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.214623][ T8398] device bridge_slave_1 entered promiscuous mode [ 45.227105][ T8402] IPVS: ftp: loaded support on port[0] = 21 [ 45.232279][ T8396] team0: Port device team_slave_1 added [ 45.244690][ T8404] IPVS: ftp: loaded support on port[0] = 21 [ 45.305087][ T8398] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 45.319804][ T8398] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 45.337143][ T8396] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.344336][ T8396] 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. [ 45.371497][ T8396] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.384297][ T8396] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.391285][ T8396] 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. [ 45.417308][ T8396] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.441319][ T8400] chnl_net:caif_netlink_parms(): no params data found [ 45.461680][ T8786] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.469402][ T8786] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.491815][ T8398] team0: Port device team_slave_0 added [ 45.519210][ T8396] device hsr_slave_0 entered promiscuous mode [ 45.526189][ T8396] device hsr_slave_1 entered promiscuous mode [ 45.532945][ T8396] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 45.540523][ T8396] Cannot create hsr debugfs directory [ 45.547731][ T8398] team0: Port device team_slave_1 added [ 45.562308][ T8394] 8021q: adding VLAN 0 to HW filter on device bond0 [ 45.571244][ T8404] chnl_net:caif_netlink_parms(): no params data found [ 45.611590][ T8402] chnl_net:caif_netlink_parms(): no params data found [ 45.630769][ T8398] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 45.638097][ T8398] 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. [ 45.664431][ T8398] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 45.677316][ T8398] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 45.684293][ T8398] 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. [ 45.710283][ T8398] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 45.743931][ T3645] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 45.753398][ T3645] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 45.775594][ T8400] bridge0: port 1(bridge_slave_0) entered blocking state [ 45.783058][ T8400] bridge0: port 1(bridge_slave_0) entered disabled state [ 45.790909][ T8400] device bridge_slave_0 entered promiscuous mode [ 45.798903][ T8394] 8021q: adding VLAN 0 to HW filter on device team0 [ 45.822191][ T8400] bridge0: port 2(bridge_slave_1) entered blocking state [ 45.829321][ T8400] bridge0: port 2(bridge_slave_1) entered disabled state [ 45.837512][ T8400] device bridge_slave_1 entered promiscuous mode [ 45.862257][ T8404] bridge0: port 1(bridge_slave_0) entered blocking state