[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 48.928085] audit: type=1400 audit(1602261224.713:8): avc: denied { execmem } for pid=6490 comm="syz-executor976" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 48.943548] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 48.965123] ================================================================================ [ 48.973884] UBSAN: Undefined behaviour in net/sched/cls_tcindex.c:238:29 [ 48.980712] shift exponent 44 is too large for 32-bit type 'int' [ 48.987075] CPU: 0 PID: 6492 Comm: syz-executor976 Not tainted 4.19.150-syzkaller #0 [ 48.994946] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.004411] Call Trace: [ 49.007005] dump_stack+0x22c/0x33e [ 49.010631] ubsan_epilogue+0xe/0x3a [ 49.014439] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 49.020682] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 49.025532] tcindex_set_parms.cold+0x170/0x22f [ 49.030230] ? tcindex_classify+0x500/0x500 [ 49.034544] ? kasan_kmalloc+0x139/0x160 [ 49.038612] ? netlink_rcv_skb+0x160/0x440 [ 49.042840] ? netlink_unicast+0x4d5/0x690 [ 49.047086] ? netlink_sendmsg+0x717/0xcc0 [ 49.051524] ? sock_sendmsg+0xc7/0x130 [ 49.055910] ? validate_nla+0x2c6/0x970 [ 49.060011] tcindex_change+0x220/0x2f3 [ 49.064248] ? tcindex_set_parms+0x2260/0x2260 [ 49.068832] ? tcindex_lookup+0x98/0x420 [ 49.073147] ? tcindex_set_parms+0x2260/0x2260 [ 49.077731] tc_new_tfilter+0xb38/0x1570 [ 49.081803] ? tcf_chain_tp_remove+0x2e0/0x2e0 [ 49.086402] ? selinux_inode_copy_up+0x180/0x180 [ 49.092040] ? rtnetlink_rcv_msg+0x443/0xc10 [ 49.096630] ? ww_mutex_unlock+0x2f0/0x2f0 [ 49.100888] ? tcf_chain_tp_remove+0x2e0/0x2e0 [ 49.105920] rtnetlink_rcv_msg+0x498/0xc10 [ 49.110514] ? rtnl_get_link+0x270/0x270 [ 49.114855] ? __netlink_lookup+0x481/0x7e0 [ 49.119365] ? find_held_lock+0x2d/0x110 [ 49.123439] netlink_rcv_skb+0x160/0x440 [ 49.127494] ? rtnl_get_link+0x270/0x270 [ 49.131550] ? netlink_ack+0xae0/0xae0 [ 49.135438] netlink_unicast+0x4d5/0x690 [ 49.139619] ? netlink_sendskb+0x110/0x110 [ 49.143858] netlink_sendmsg+0x717/0xcc0 [ 49.147922] ? nlmsg_notify+0x1a0/0x1a0 [ 49.151968] ? __sock_recv_ts_and_drops+0x540/0x540 [ 49.157005] ? nlmsg_notify+0x1a0/0x1a0 [ 49.160997] sock_sendmsg+0xc7/0x130 [ 49.164727] ___sys_sendmsg+0x7bb/0x8f0 [ 49.168698] ? copy_msghdr_from_user+0x440/0x440 [ 49.173469] ? do_huge_pmd_anonymous_page+0x939/0x1d70 [ 49.179026] ? prep_transhuge_page+0xa0/0xa0 [ 49.183521] ? check_preemption_disabled+0x41/0x2b0 [ 49.188559] ? mark_held_locks+0xf0/0xf0 [ 49.192632] ? sock_has_perm+0x203/0x2c0 [ 49.196955] ? selinux_tun_dev_attach_queue+0x140/0x140 [ 49.202331] ? sock_has_perm+0x203/0x2c0 [ 49.206397] ? selinux_tun_dev_attach_queue+0x140/0x140 [ 49.211842] ? selinux_netlbl_socket_setsockopt+0x9e/0x3c0 [ 49.217475] ? selinux_netlbl_sock_rcv_skb+0x4d0/0x4d0 [ 49.222767] ? ip_getsockopt+0xa1/0x1c0 [ 49.226839] ? compat_ip_getsockopt+0x210/0x210 [ 49.232120] ? __fget_light+0x1a2/0x230 [ 49.236120] __x64_sys_sendmsg+0x132/0x220 [ 49.240461] ? __sys_sendmsg+0x1b0/0x1b0 [ 49.244618] ? kernel_setsockopt+0x1c0/0x1c0 [ 49.249054] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 49.254431] ? trace_hardirqs_off_caller+0x6e/0x210 [ 49.259458] ? do_syscall_64+0x21/0x670 [ 49.263442] do_syscall_64+0xf9/0x670 [ 49.267264] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.272553] RIP: 0033:0x441629 [ 49.275774] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 49.294778] RSP: 002b:00007fff6220c2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.302493] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441629 [ 49.309789] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 49.317268] RBP: 000000000000bf1a R08: 00000000004002c8 R09: 00000000004002c8 executing program executing program [ 49.324635] R10: 0000000020000080 R11: 0000000000000246 R12: 00000000004023d0 [ 49.332013] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 [ 49.339388] ================================================================================ [ 49.351717] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 49.369275] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program [ 49.386253] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 49.402639] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 49.418713] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program [ 49.436107] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 49.451037] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 49.465376] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program executing program executing program executing program [ 49.481927] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.950752] nla_parse: 740 callbacks suppressed [ 53.950759] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 53.971684] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 53.985528] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program [ 53.999717] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 54.015441] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 54.031084] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program [ 54.048121] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 54.063608] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 54.078487] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program executing program executing program executing program executing program [ 54.092812] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 58.955788] nla_parse: 831 callbacks suppressed [ 58.955798] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 58.975840] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. [ 58.993390] netlink: 4 bytes leftover after parsing attributes in process `syz-executor976'. executing program