Warning: Permanently added '10.128.1.30' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.222374] audit: type=1400 audit(1601018942.865:8): avc: denied { execmem } for pid=6476 comm="syz-executor559" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 38.226064] ================================================================================ [ 38.250996] UBSAN: Undefined behaviour in ./include/net/red.h:214:22 [ 38.257470] shift exponent 147 is too large for 32-bit type 'int' [ 38.263684] CPU: 1 PID: 6476 Comm: syz-executor559 Not tainted 4.19.147-syzkaller #0 [ 38.271549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.280899] Call Trace: [ 38.283477] dump_stack+0x22c/0x33e [ 38.287107] ubsan_epilogue+0xe/0x3a [ 38.290819] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 38.296948] ? sfq_init+0xe48/0x1fa0 [ 38.300645] sfq_init.cold+0x8f/0xdb [ 38.304368] ? sfq_dump_class_stats+0x2b0/0x2b0 [ 38.309023] ? sfq_dump_class_stats+0x2b0/0x2b0 [ 38.313724] qdisc_create+0x534/0x1080 [ 38.317642] ? tc_get_qdisc+0xad0/0xad0 [ 38.321597] ? nla_parse+0x1b2/0x290 [ 38.325293] tc_modify_qdisc+0x4c0/0x195b [ 38.329427] ? qdisc_create+0x1080/0x1080 [ 38.333556] ? rtnetlink_rcv_msg+0x443/0xc10 [ 38.338087] ? qdisc_create+0x1080/0x1080 [ 38.342344] rtnetlink_rcv_msg+0x498/0xc10 [ 38.346670] ? rtnl_get_link+0x270/0x270 [ 38.350717] ? __netlink_lookup+0x481/0x7e0 [ 38.355030] ? find_held_lock+0x2d/0x110 [ 38.359087] netlink_rcv_skb+0x160/0x440 [ 38.363136] ? rtnl_get_link+0x270/0x270 [ 38.367184] ? netlink_ack+0xae0/0xae0 [ 38.371107] netlink_unicast+0x4d5/0x690 [ 38.375154] ? netlink_sendskb+0x110/0x110 [ 38.379376] netlink_sendmsg+0x717/0xcc0 [ 38.383454] ? nlmsg_notify+0x1a0/0x1a0 [ 38.387465] ? __sock_recv_ts_and_drops+0x540/0x540 [ 38.392468] ? nlmsg_notify+0x1a0/0x1a0 [ 38.396433] sock_sendmsg+0xc7/0x130 [ 38.400146] ___sys_sendmsg+0x7bb/0x8f0 [ 38.404105] ? copy_msghdr_from_user+0x440/0x440 [ 38.408865] ? selinux_file_alloc_security+0xe4/0x1c0 [ 38.414038] ? rcu_read_lock_sched_held+0x174/0x1e0 [ 38.419038] ? __lockdep_init_map+0x100/0x5c0 [ 38.423516] ? check_preemption_disabled+0x41/0x2b0 [ 38.428532] ? mark_held_locks+0xf0/0xf0 [ 38.432576] ? percpu_counter_add_batch+0x126/0x180 [ 38.437663] ? alloc_empty_file+0xd7/0x170 [ 38.441895] ? errseq_sample+0x56/0x70 [ 38.445781] ? find_held_lock+0x2d/0x110 [ 38.449828] ? __fd_install+0x22a/0x6e0 [ 38.453880] ? __fget_light+0x1a2/0x230 [ 38.457842] __x64_sys_sendmsg+0x132/0x220 [ 38.462060] ? __sys_sendmsg+0x1b0/0x1b0 [ 38.466113] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.470908] ? trace_hardirqs_off_caller+0x69/0x210 [ 38.475907] ? do_syscall_64+0x21/0x670 [ 38.479868] do_syscall_64+0xf9/0x670 [ 38.483656] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.488826] RIP: 0033:0x440419 [ 38.492001] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 38.510987] RSP: 002b:00007ffc8ec4aa68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 38.518680] RAX: ffffffffffffffda RBX: 00000000004002c8