Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. 2020/03/18 09:31:35 fuzzer started 2020/03/18 09:31:37 dialing manager at 10.128.0.105:41097 2020/03/18 09:31:37 checking machine... 2020/03/18 09:31:37 checking revisions... 2020/03/18 09:31:37 testing simple program... syzkaller login: [ 58.638950][ T7845] IPVS: ftp: loaded support on port[0] = 21 2020/03/18 09:31:37 building call list... [ 59.001163][ T7] tipc: TX() has been purged, node left! [ 61.250565][ T7829] can: request_module (can-proto-0) failed. [ 61.262401][ T7829] can: request_module (can-proto-0) failed. [ 61.274067][ T7829] can: request_module (can-proto-0) failed. executing program 2020/03/18 09:31:42 syscalls: 2955 2020/03/18 09:31:42 code coverage: enabled 2020/03/18 09:31:42 comparison tracing: enabled 2020/03/18 09:31:42 extra coverage: enabled 2020/03/18 09:31:42 setuid sandbox: enabled 2020/03/18 09:31:42 namespace sandbox: enabled 2020/03/18 09:31:42 Android sandbox: /sys/fs/selinux/policy does not exist 2020/03/18 09:31:42 fault injection: enabled 2020/03/18 09:31:42 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/03/18 09:31:42 net packet injection: enabled 2020/03/18 09:31:42 net device setup: enabled 2020/03/18 09:31:42 concurrency sanitizer: enabled 2020/03/18 09:31:42 devlink PCI setup: PCI device 0000:00:10.0 is not available 09:31:43 executing program 0: perf_event_open(&(0x7f000001d000)={0x1, 0x4e, 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, 0x0, 0xffffffffffffffff, 0x0) mlock(&(0x7f00005c5000/0x3000)=nil, 0x3000) madvise(&(0x7f0000000000/0x600000)=nil, 0x600000, 0x3) [ 65.094302][ T7904] IPVS: ftp: loaded support on port[0] = 21 09:31:43 executing program 1: bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0xe, 0xe, &(0x7f00000008c0)=ANY=[@ANYBLOB="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"], &(0x7f0000000340)='syzkaller\x00'}, 0x48) [ 65.160955][ T7904] chnl_net:caif_netlink_parms(): no params data found [ 65.228388][ T7904] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.251172][ T7904] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.258946][ T7904] device bridge_slave_0 entered promiscuous mode [ 65.282920][ T7904] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.290033][ T7904] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.312086][ T7904] device bridge_slave_1 entered promiscuous mode [ 65.330046][ T7904] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.363441][ T7904] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.391184][ T7910] IPVS: ftp: loaded support on port[0] = 21 [ 65.396537][ T7904] team0: Port device team_slave_0 added [ 65.414428][ T7904] team0: Port device team_slave_1 added 09:31:44 executing program 2: openat$kvm(0xffffffffffffff9c, &(0x7f0000000200)='/dev/kvm\x00', 0x0, 0x0) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000040)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60) r2 = eventfd(0x0) ioctl$KVM_IRQFD(r1, 0x4020ae76, &(0x7f0000000000)={r2, 0x0, 0x2}) [ 65.454122][ T7904] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.461178][ T7904] 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. [ 65.487471][ T7904] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.500954][ T7840] ================================================================== [ 65.509105][ T7840] BUG: KCSAN: data-race in ep_insert / ep_poll [ 65.513024][ T7904] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.515256][ T7840] [ 65.524520][ T7840] write to 0xffff88812183c118 of 8 bytes by task 7830 on cpu 0: [ 65.532165][ T7840] ep_insert+0xb7d/0xcf0 [ 65.536414][ T7840] do_epoll_ctl+0x72c/0xf90 [ 65.537578][ T7904] 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. [ 65.540926][ T7840] __x64_sys_epoll_ctl+0xb4/0x100 [ 65.571820][ T7840] do_syscall_64+0xc7/0x390 [ 65.576353][ T7840] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.582239][ T7840] [ 65.584579][ T7840] read to 0xffff88812183c118 of 8 bytes by task 7840 on cpu 1: [ 65.592138][ T7840] ep_poll+0x74b/0x910 [ 65.596220][ T7840] do_epoll_wait+0x15a/0x180 [ 65.597429][ T7904] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.600826][ T7840] __x64_sys_epoll_pwait+0xc6/0x170 [ 65.616500][ T7840] do_syscall_64+0xc7/0x390 [ 65.621007][ T7840] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.626897][ T7840] [ 65.629226][ T7840] Reported by Kernel Concurrency Sanitizer on: [ 65.635380][ T7840] CPU: 1 PID: 7840 Comm: syz-fuzzer Not tainted 5.6.0-rc1-syzkaller #0 [ 65.643621][ T7840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.653679][ T7840] ================================================================== [ 65.661744][ T7840] Kernel panic - not syncing: panic_on_warn set ... [ 65.668348][ T7840] CPU: 1 PID: 7840 Comm: syz-fuzzer Not tainted 5.6.0-rc1-syzkaller #0 [ 65.676586][ T7840] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.686739][ T7840] Call Trace: [ 65.690046][ T7840] dump_stack+0x11d/0x187 [ 65.694395][ T7840] panic+0x210/0x640 [ 65.698305][ T7840] ? vprintk_func+0x89/0x13a [ 65.702912][ T7840] kcsan_report.cold+0xc/0x14 [ 65.707609][ T7840] kcsan_setup_watchpoint+0x3e3/0x420 [ 65.713258][ T7840] ep_poll+0x74b/0x910 [ 65.718303][ T7840] ? wake_up_q+0x90/0x90 [ 65.722565][ T7840] do_epoll_wait+0x15a/0x180 [ 65.727176][ T7840] __x64_sys_epoll_pwait+0xc6/0x170 [ 65.732390][ T7840] do_syscall_64+0xc7/0x390 [ 65.736907][ T7840] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.742833][ T7840] RIP: 0033:0x45b300 [ 65.746881][ T7840] Code: 0f 05 89 44 24 20 c3 cc cc cc 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 44 8b 54 24 1c 49 c7 c0 00 00 00 00 b8 19 01 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 c7 [ 65.766594][ T7840] RSP: 002b:000000c420181860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119 [ 65.775013][ T7840] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 000000000045b300 [ 65.782990][ T7840] RDX: 0000000000000080 RSI: 000000c4201818a0 RDI: 0000000000000004 [ 65.790973][ T7840] RBP: 000000c420181ea0 R08: 0000000000000000 R09: 000000c420001e00 [ 65.798954][ T7840] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000000 [ 65.806930][ T7840] R13: 0000000000000001 R14: 00007fdf2b4646c8 R15: 0000000000000001 [ 65.816275][ T7840] Kernel Offset: disabled [ 65.820604][ T7840] Rebooting in 86400 seconds..