Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.104452] audit: type=1400 audit(1600717900.743:8): avc: denied { execmem } for pid=6475 comm="syz-executor477" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.106573] ================================================================================ [ 41.134584] UBSAN: Undefined behaviour in net/netfilter/ipset/ip_set_hash_gen.h:125:6 [ 41.142551] shift exponent 32 is too large for 32-bit type 'unsigned int' [ 41.149473] CPU: 0 PID: 6475 Comm: syz-executor477 Not tainted 4.19.146-syzkaller #0 [ 41.157336] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.166675] Call Trace: [ 41.169255] dump_stack+0x22c/0x33e [ 41.172886] ubsan_epilogue+0xe/0x3a [ 41.176603] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 41.182767] ? hash_netiface_create+0x366/0xa50 [ 41.187427] ? rcu_read_lock_sched_held+0x174/0x1e0 [ 41.192431] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 41.197264] hash_netiface_create.cold+0x1a/0x1f [ 41.202096] ? hash_netiface6_add+0x2940/0x2940 [ 41.206749] ip_set_create+0x70e/0x1380 [ 41.210708] ? __find_set_type_get+0x450/0x450 [ 41.215302] ? lock_downgrade+0x750/0x750 [ 41.220055] ? __find_set_type_get+0x450/0x450 [ 41.224622] nfnetlink_rcv_msg+0xeff/0x1210 [ 41.228955] ? nfnetlink_net_init+0x170/0x170 [ 41.233451] ? avc_has_extended_perms+0x1020/0x1020 [ 41.238809] ? avc_has_extended_perms+0x1020/0x1020 [ 41.243822] ? __lock_acquire+0x6ec/0x3ff0 [ 41.248038] ? mark_held_locks+0xf0/0xf0 [ 41.252085] ? cred_has_capability+0x162/0x2e0 [ 41.256645] ? cred_has_capability+0x1d9/0x2e0 [ 41.261208] ? selinux_inode_copy_up+0x180/0x180 [ 41.265943] ? selinux_inode_copy_up+0x180/0x180 [ 41.270694] netlink_rcv_skb+0x160/0x440 [ 41.274750] ? nfnetlink_net_init+0x170/0x170 [ 41.279239] ? netlink_ack+0xae0/0xae0 [ 41.283113] ? ns_capable_common+0x117/0x140 [ 41.287507] nfnetlink_rcv+0x1b2/0x41b [ 41.291375] ? nfnetlink_rcv_batch+0x1710/0x1710 [ 41.296136] netlink_unicast+0x4d5/0x690 [ 41.301544] ? netlink_sendskb+0x110/0x110 [ 41.305785] netlink_sendmsg+0x717/0xcc0 [ 41.309829] ? nlmsg_notify+0x1a0/0x1a0 [ 41.313800] ? __sock_recv_ts_and_drops+0x540/0x540 [ 41.318814] ? nlmsg_notify+0x1a0/0x1a0 [ 41.322769] sock_sendmsg+0xc7/0x130 [ 41.326472] ___sys_sendmsg+0x7bb/0x8f0 [ 41.330428] ? copy_msghdr_from_user+0x440/0x440 [ 41.335180] ? do_huge_pmd_anonymous_page+0x939/0x1d70 [ 41.340450] ? prep_transhuge_page+0xa0/0xa0 [ 41.344854] ? check_preemption_disabled+0x41/0x2b0 [ 41.349851] ? mark_held_locks+0xf0/0xf0 [ 41.353917] ? __handle_mm_fault+0xf34/0x4370 [ 41.358397] ? errseq_sample+0x56/0x70 [ 41.362286] ? vmf_insert_mixed_mkwrite+0xa0/0xa0 [ 41.376171] ? find_held_lock+0x2d/0x110 [ 41.380216] ? find_held_lock+0x2d/0x110 [ 41.384268] ? __fget_light+0x1a2/0x230 [ 41.388245] __x64_sys_sendmsg+0x132/0x220 [ 41.392476] ? __sys_sendmsg+0x1b0/0x1b0 [ 41.396670] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.401420] ? trace_hardirqs_off_caller+0x69/0x210 [ 41.406418] ? do_syscall_64+0x21/0x670 [ 41.410374] do_syscall_64+0xf9/0x670 [ 41.414159] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.419327] RIP: 0033:0x440429 [ 41.422509] 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 [ 41.441921] RSP: 002b:00007ffe288bb6f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.449621] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000