[ OK ] Started OpenBSD Secure Shell server. [ 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 Warning: Permanently added '10.128.0.92' (ECDSA) to the list of known hosts. 2020/07/17 19:42:09 fuzzer started 2020/07/17 19:42:10 dialing manager at 10.128.0.26:41463 2020/07/17 19:42:10 syscalls: 2944 2020/07/17 19:42:10 code coverage: enabled 2020/07/17 19:42:10 comparison tracing: CONFIG_KCOV_ENABLE_COMPARISONS is not enabled 2020/07/17 19:42:10 extra coverage: enabled 2020/07/17 19:42:10 setuid sandbox: enabled 2020/07/17 19:42:10 namespace sandbox: enabled 2020/07/17 19:42:10 Android sandbox: /sys/fs/selinux/policy does not exist 2020/07/17 19:42:10 fault injection: enabled 2020/07/17 19:42:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/07/17 19:42:10 net packet injection: enabled 2020/07/17 19:42:10 net device setup: enabled 2020/07/17 19:42:10 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/07/17 19:42:10 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/07/17 19:42:10 USB emulation: /dev/raw-gadget does not exist 19:43:09 executing program 0: madvise(&(0x7f0000a93000/0x4000)=nil, 0x4000, 0xe) madvise(&(0x7f0000495000/0x400000)=nil, 0x400000, 0x8) perf_event_open(&(0x7f0000000240)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8001, 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_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) rt_tgsigqueueinfo(0x0, 0x0, 0x0, 0x0) mlock2(&(0x7f00006a1000/0x3000)=nil, 0x3000, 0x0) setsockopt$IP_VS_SO_SET_ADD(0xffffffffffffffff, 0x0, 0x482, 0x0, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000080)='smaps\x00') r1 = socket$netlink(0x10, 0x3, 0xa) sendfile(r1, r0, 0x0, 0x7fffffff) syzkaller login: [ 176.838772][ T8488] IPVS: ftp: loaded support on port[0] = 21 [ 177.054022][ T8488] chnl_net:caif_netlink_parms(): no params data found [ 177.273911][ T8488] bridge0: port 1(bridge_slave_0) entered blocking state [ 177.281685][ T8488] bridge0: port 1(bridge_slave_0) entered disabled state [ 177.290993][ T8488] device bridge_slave_0 entered promiscuous mode [ 177.323556][ T8488] bridge0: port 2(bridge_slave_1) entered blocking state [ 177.331019][ T8488] bridge0: port 2(bridge_slave_1) entered disabled state [ 177.340537][ T8488] device bridge_slave_1 entered promiscuous mode [ 177.383291][ T8488] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 177.397677][ T8488] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 177.442093][ T8488] team0: Port device team_slave_0 added [ 177.453151][ T8488] team0: Port device team_slave_1 added [ 177.490978][ T8488] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 177.498654][ T8488] 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. [ 177.524848][ T8488] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 177.539109][ T8488] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 177.546155][ T8488] 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. [ 177.572341][ T8488] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 177.654221][ T8488] device hsr_slave_0 entered promiscuous mode [ 177.818544][ T8488] device hsr_slave_1 entered promiscuous mode [ 178.302781][ T8488] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 178.350870][ T8488] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 178.408548][ T8488] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 178.445113][ T8488] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 178.640903][ T8488] 8021q: adding VLAN 0 to HW filter on device bond0 [ 178.674544][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 178.684180][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 178.700477][ T8488] 8021q: adding VLAN 0 to HW filter on device team0 [ 178.733735][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 178.742861][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 178.752278][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 178.759578][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 178.816791][ T8488] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 178.827764][ T8488] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 178.843764][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 178.853294][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 178.862889][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 178.872142][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 178.879447][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 178.888399][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 178.899131][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 178.909509][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 178.919697][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 178.929689][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 178.939644][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 178.949720][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 178.959139][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 178.969185][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 178.978636][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 178.996667][ T2312] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 179.006109][ T2312] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 179.049143][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 179.056775][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 179.078578][ T8488] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 179.143435][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 179.153445][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 179.200645][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 179.210398][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 179.224966][ T8488] device veth0_vlan entered promiscuous mode [ 179.245415][ T8488] device veth1_vlan entered promiscuous mode [ 179.255004][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 179.264408][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 179.273361][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 179.330828][ T8488] device veth0_macvtap entered promiscuous mode [ 179.342262][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 179.352138][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 179.361960][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 179.377087][ T8488] device veth1_macvtap entered promiscuous mode [ 179.389159][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 179.398826][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 179.430771][ T8488] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 179.441401][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 179.451407][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 179.469491][ T8488] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 179.489338][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 179.499214][ T3325] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 179.720677][ T8693] ===================================================== [ 179.727661][ T8693] BUG: KMSAN: uninit-value in nl_fib_input+0x31f/0xdb0 [ 179.734600][ T8693] CPU: 0 PID: 8693 Comm: syz-executor.0 Not tainted 5.8.0-rc5-syzkaller #0 [ 179.743179][ T8693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 179.753237][ T8693] Call Trace: [ 179.756537][ T8693] dump_stack+0x1df/0x240 [ 179.760881][ T8693] kmsan_report+0xf7/0x1e0 [ 179.765306][ T8693] __msan_warning+0x58/0xa0 [ 179.769820][ T8693] nl_fib_input+0x31f/0xdb0 [ 179.774339][ T8693] ? kmsan_get_metadata+0x11d/0x180 [ 179.779547][ T8693] netlink_unicast+0xf9e/0x1100 [ 179.784398][ T8693] ? ip_fib_net_exit+0x630/0x630 [ 179.789331][ T8693] netlink_sendmsg+0x1246/0x14d0 [ 179.794254][ T8693] ? netlink_getsockopt+0x1440/0x1440 [ 179.799604][ T8693] kernel_sendmsg+0x433/0x440 [ 179.804265][ T8693] sock_no_sendpage+0x235/0x300 [ 179.809100][ T8693] ? sock_no_mmap+0x30/0x30 [ 179.813580][ T8693] sock_sendpage+0x1e1/0x2c0 [ 179.818155][ T8693] pipe_to_sendpage+0x38c/0x4c0 [ 179.822984][ T8693] ? sock_fasync+0x250/0x250 [ 179.827556][ T8693] __splice_from_pipe+0x565/0xf00 [ 179.832646][ T8693] ? generic_splice_sendpage+0x2d0/0x2d0 [ 179.838286][ T8693] generic_splice_sendpage+0x1d5/0x2d0 [ 179.843740][ T8693] ? iter_file_splice_write+0x1800/0x1800 [ 179.849437][ T8693] direct_splice_actor+0x1fd/0x580 [ 179.854532][ T8693] ? kmsan_get_metadata+0x4f/0x180 [ 179.859625][ T8693] splice_direct_to_actor+0x6b2/0xf50 [ 179.864973][ T8693] ? do_splice_direct+0x580/0x580 [ 179.869985][ T8693] do_splice_direct+0x342/0x580 [ 179.874822][ T8693] do_sendfile+0x101b/0x1d40 [ 179.879401][ T8693] __se_sys_sendfile64+0x2bb/0x360 [ 179.884489][ T8693] ? kmsan_get_metadata+0x4f/0x180 [ 179.889580][ T8693] __x64_sys_sendfile64+0x56/0x70 [ 179.894598][ T8693] do_syscall_64+0xb0/0x150 [ 179.899105][ T8693] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 179.904988][ T8693] RIP: 0033:0x45c1d9 [ 179.908853][ T8693] Code: Bad RIP value. [ 179.912901][ T8693] RSP: 002b:00007fc848372c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 179.921300][ T8693] RAX: ffffffffffffffda RBX: 0000000000025a00 RCX: 000000000045c1d9 [ 179.929249][ T8693] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 179.937205][ T8693] RBP: 000000000078bf48 R08: 0000000000000000 R09: 0000000000000000 [ 179.945159][ T8693] R10: 000000007fffffff R11: 0000000000000246 R12: 000000000078bf0c [ 179.953118][ T8693] R13: 0000000000c9fb6f R14: 00007fc8483739c0 R15: 000000000078bf0c [ 179.961071][ T8693] [ 179.963372][ T8693] Uninit was stored to memory at: [ 179.968374][ T8693] kmsan_internal_chain_origin+0xad/0x130 [ 179.974070][ T8693] kmsan_memcpy_memmove_metadata+0x272/0x2e0 [ 179.980024][ T8693] kmsan_memcpy_metadata+0xb/0x10 [ 179.985023][ T8693] __msan_memcpy+0x43/0x50 [ 179.989415][ T8693] _copy_from_iter_full+0xbfe/0x13b0 [ 179.994685][ T8693] netlink_sendmsg+0xfaa/0x14d0 [ 179.999526][ T8693] kernel_sendmsg+0x433/0x440 [ 180.004179][ T8693] sock_no_sendpage+0x235/0x300 [ 180.009009][ T8693] sock_sendpage+0x1e1/0x2c0 [ 180.013580][ T8693] pipe_to_sendpage+0x38c/0x4c0 [ 180.018416][ T8693] __splice_from_pipe+0x565/0xf00 [ 180.023427][ T8693] generic_splice_sendpage+0x1d5/0x2d0 [ 180.028868][ T8693] direct_splice_actor+0x1fd/0x580 [ 180.033955][ T8693] splice_direct_to_actor+0x6b2/0xf50 [ 180.039312][ T8693] do_splice_direct+0x342/0x580 [ 180.044141][ T8693] do_sendfile+0x101b/0x1d40 [ 180.048716][ T8693] __se_sys_sendfile64+0x2bb/0x360 [ 180.053806][ T8693] __x64_sys_sendfile64+0x56/0x70 [ 180.058808][ T8693] do_syscall_64+0xb0/0x150 [ 180.063287][ T8693] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 180.069150][ T8693] [ 180.071459][ T8693] Uninit was created at: [ 180.075691][ T8693] kmsan_save_stack_with_flags+0x3c/0x90 [ 180.081315][ T8693] kmsan_alloc_page+0xb9/0x180 [ 180.086073][ T8693] __alloc_pages_nodemask+0x56a2/0x5dc0 [ 180.091607][ T8693] alloc_pages_current+0x672/0x990 [ 180.096698][ T8693] push_pipe+0x605/0xb70 [ 180.100920][ T8693] iov_iter_get_pages_alloc+0x18a9/0x21c0 [ 180.106625][ T8693] do_splice_to+0x4fc/0x14f0 [ 180.111192][ T8693] splice_direct_to_actor+0x45c/0xf50 [ 180.116538][ T8693] do_splice_direct+0x342/0x580 [ 180.121363][ T8693] do_sendfile+0x101b/0x1d40 [ 180.125937][ T8693] __se_sys_sendfile64+0x2bb/0x360 [ 180.131024][ T8693] __x64_sys_sendfile64+0x56/0x70 [ 180.136025][ T8693] do_syscall_64+0xb0/0x150 [ 180.140517][ T8693] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 180.146392][ T8693] ===================================================== [ 180.153296][ T8693] Disabling lock debugging due to kernel taint [ 180.159421][ T8693] Kernel panic - not syncing: panic_on_warn set ... [ 180.165985][ T8693] CPU: 0 PID: 8693 Comm: syz-executor.0 Tainted: G B 5.8.0-rc5-syzkaller #0 [ 180.175926][ T8693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 180.185960][ T8693] Call Trace: [ 180.189236][ T8693] dump_stack+0x1df/0x240 [ 180.193573][ T8693] panic+0x3d5/0xc3e [ 180.197474][ T8693] kmsan_report+0x1df/0x1e0 [ 180.201957][ T8693] __msan_warning+0x58/0xa0 [ 180.206455][ T8693] nl_fib_input+0x31f/0xdb0 [ 180.210961][ T8693] ? kmsan_get_metadata+0x11d/0x180 [ 180.216144][ T8693] netlink_unicast+0xf9e/0x1100 [ 180.220972][ T8693] ? ip_fib_net_exit+0x630/0x630 [ 180.225906][ T8693] netlink_sendmsg+0x1246/0x14d0 [ 180.230834][ T8693] ? netlink_getsockopt+0x1440/0x1440 [ 180.236192][ T8693] kernel_sendmsg+0x433/0x440 [ 180.240867][ T8693] sock_no_sendpage+0x235/0x300 [ 180.245699][ T8693] ? sock_no_mmap+0x30/0x30 [ 180.250177][ T8693] sock_sendpage+0x1e1/0x2c0 [ 180.254749][ T8693] pipe_to_sendpage+0x38c/0x4c0 [ 180.259574][ T8693] ? sock_fasync+0x250/0x250 [ 180.264148][ T8693] __splice_from_pipe+0x565/0xf00 [ 180.269149][ T8693] ? generic_splice_sendpage+0x2d0/0x2d0 [ 180.274766][ T8693] generic_splice_sendpage+0x1d5/0x2d0 [ 180.280210][ T8693] ? iter_file_splice_write+0x1800/0x1800 [ 180.285922][ T8693] direct_splice_actor+0x1fd/0x580 [ 180.291022][ T8693] ? kmsan_get_metadata+0x4f/0x180 [ 180.296110][ T8693] splice_direct_to_actor+0x6b2/0xf50 [ 180.301456][ T8693] ? do_splice_direct+0x580/0x580 [ 180.306467][ T8693] do_splice_direct+0x342/0x580 [ 180.311304][ T8693] do_sendfile+0x101b/0x1d40 [ 180.315897][ T8693] __se_sys_sendfile64+0x2bb/0x360 [ 180.320982][ T8693] ? kmsan_get_metadata+0x4f/0x180 [ 180.326070][ T8693] __x64_sys_sendfile64+0x56/0x70 [ 180.331071][ T8693] do_syscall_64+0xb0/0x150 [ 180.335553][ T8693] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 180.341418][ T8693] RIP: 0033:0x45c1d9 [ 180.345285][ T8693] Code: Bad RIP value. [ 180.349334][ T8693] RSP: 002b:00007fc848372c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 180.357730][ T8693] RAX: ffffffffffffffda RBX: 0000000000025a00 RCX: 000000000045c1d9 [ 180.365676][ T8693] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 180.373626][ T8693] RBP: 000000000078bf48 R08: 0000000000000000 R09: 0000000000000000 [ 180.381662][ T8693] R10: 000000007fffffff R11: 0000000000000246 R12: 000000000078bf0c [ 180.389611][ T8693] R13: 0000000000c9fb6f R14: 00007fc8483739c0 R15: 000000000078bf0c [ 180.398849][ T8693] Kernel Offset: 0x1e000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 180.410456][ T8693] Rebooting in 86400 seconds..