Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.727087] audit: type=1400 audit(1600622204.993:8): avc: denied { execmem } for pid=6474 comm="syz-executor599" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.730511] ================================================================================ [ 40.755660] UBSAN: Undefined behaviour in net/netfilter/ipset/ip_set_hash_gen.h:125:6 [ 40.763619] shift exponent 32 is too large for 32-bit type 'unsigned int' [ 40.770528] CPU: 0 PID: 6474 Comm: syz-executor599 Not tainted 4.19.146-syzkaller #0 [ 40.778394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.787739] Call Trace: [ 40.790312] dump_stack+0x22c/0x33e [ 40.793922] ubsan_epilogue+0xe/0x3a [ 40.797639] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 40.803764] ? hash_ipport_create+0x366/0xa4d [ 40.808261] ? rcu_read_lock_sched_held+0x174/0x1e0 [ 40.813255] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 40.818087] hash_ipport_create.cold+0x1a/0x2d [ 40.822647] ? hash_ipport4_add+0x1ee0/0x1ee0 [ 40.827122] ip_set_create+0x70e/0x1380 [ 40.831077] ? __find_set_type_get+0x450/0x450 [ 40.835646] ? lock_downgrade+0x750/0x750 [ 40.839772] ? __find_set_type_get+0x450/0x450 [ 40.844420] nfnetlink_rcv_msg+0xeff/0x1210 [ 40.848727] ? nfnetlink_net_init+0x170/0x170 [ 40.853207] ? avc_has_extended_perms+0x1020/0x1020 [ 40.858217] ? avc_has_extended_perms+0x1020/0x1020 [ 40.863213] ? __lock_acquire+0x6ec/0x3ff0 [ 40.867437] ? mark_held_locks+0xf0/0xf0 [ 40.871481] ? cred_has_capability+0x162/0x2e0 [ 40.876041] ? cred_has_capability+0x1d9/0x2e0 [ 40.880614] ? selinux_inode_copy_up+0x180/0x180 [ 40.885351] ? selinux_inode_copy_up+0x180/0x180 [ 40.890089] netlink_rcv_skb+0x160/0x440 [ 40.894130] ? nfnetlink_net_init+0x170/0x170 [ 40.898616] ? netlink_ack+0xae0/0xae0 [ 40.902485] ? ns_capable_common+0x117/0x140 [ 40.906874] nfnetlink_rcv+0x1b2/0x41b [ 40.910741] ? nfnetlink_rcv_batch+0x1710/0x1710 [ 40.915563] netlink_unicast+0x4d5/0x690 [ 40.919603] ? netlink_sendskb+0x110/0x110 [ 40.923842] netlink_sendmsg+0x717/0xcc0 [ 40.927900] ? nlmsg_notify+0x1a0/0x1a0 [ 40.931855] ? nlmsg_notify+0x1a0/0x1a0 [ 40.935808] sock_sendmsg+0xc7/0x130 [ 40.939518] sock_no_sendpage+0xf5/0x140 [ 40.943569] ? sk_page_frag_refill+0x1d0/0x1d0 [ 40.948149] ? pipe_lock+0x63/0x80 [ 40.951669] ? pipe_lock+0x63/0x80 [ 40.955191] ? sk_page_frag_refill+0x1d0/0x1d0 [ 40.959750] sock_sendpage+0xdf/0x140 [ 40.963542] pipe_to_sendpage+0x268/0x330 [ 40.967670] ? move_addr_to_kernel.part.0+0x110/0x110 [ 40.972850] ? direct_splice_actor+0x160/0x160 [ 40.977427] ? splice_from_pipe_next.part.0+0x2d5/0x390 [ 40.982791] __splice_from_pipe+0x3af/0x820 [ 40.987101] ? direct_splice_actor+0x160/0x160 [ 40.991714] generic_splice_sendpage+0xd4/0x140 [ 40.996368] ? __splice_from_pipe+0x820/0x820 [ 41.000850] ? security_file_permission+0x1c0/0x230 [ 41.005849] ? __splice_from_pipe+0x820/0x820 [ 41.010324] __se_sys_splice+0xf31/0x15f0 [ 41.014470] ? __sys_socket+0x16d/0x200 [ 41.018423] ? move_addr_to_kernel+0x70/0x70 [ 41.022809] ? __se_sys_tee+0xa10/0xa10 [ 41.026777] ? trace_hardirqs_off_caller+0x69/0x210 [ 41.031772] ? do_syscall_64+0x21/0x670 [ 41.035729] do_syscall_64+0xf9/0x670 [ 41.039511] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.044687] RIP: 0033:0x4404d9 [ 41.047859] 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 [ 41.066747] RSP: 002b:00007ffcb33f3cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 41.074440] RAX: ffffffffffffffda RBX: 0000000