Warning: Permanently added '10.128.0.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 40.439818] audit: type=1400 audit(1600779865.351:9): avc: denied { execmem } for pid=6475 comm="syz-executor837" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.443007] ================================================================================ [ 40.471726] UBSAN: Undefined behaviour in net/netfilter/ipset/ip_set_hash_gen.h:125:6 [ 40.479694] shift exponent 32 is too large for 32-bit type 'unsigned int' [ 40.486625] CPU: 0 PID: 6475 Comm: syz-executor837 Not tainted 4.19.146-syzkaller #0 [ 40.494495] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.503852] Call Trace: [ 40.506437] dump_stack+0x22c/0x33e [ 40.510048] ubsan_epilogue+0xe/0x3a [ 40.513760] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 40.519901] ? hash_ipportnet_create+0x366/0xa50 [ 40.524656] ? rcu_read_lock_sched_held+0x174/0x1e0 [ 40.529654] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 40.534479] hash_ipportnet_create.cold+0x1a/0x1f [ 40.539303] ? hash_ipportnet6_add+0x29c0/0x29c0 [ 40.544040] ip_set_create+0x70e/0x1380 [ 40.548009] ? __find_set_type_get+0x450/0x450 [ 40.552583] ? lock_downgrade+0x750/0x750 [ 40.556713] ? __find_set_type_get+0x450/0x450 [ 40.561276] nfnetlink_rcv_msg+0xeff/0x1210 [ 40.565584] ? nfnetlink_net_init+0x170/0x170 [ 40.570069] ? avc_has_extended_perms+0x1020/0x1020 [ 40.575064] ? avc_has_extended_perms+0x1020/0x1020 [ 40.580062] ? __lock_acquire+0x6ec/0x3ff0 [ 40.584280] ? mark_held_locks+0xf0/0xf0 [ 40.588337] ? cred_has_capability+0x162/0x2e0 [ 40.592898] ? cred_has_capability+0x1d9/0x2e0 [ 40.597459] ? selinux_inode_copy_up+0x180/0x180 [ 40.602193] ? selinux_inode_copy_up+0x180/0x180 [ 40.606932] netlink_rcv_skb+0x160/0x440 [ 40.610975] ? nfnetlink_net_init+0x170/0x170 [ 40.615450] ? netlink_ack+0xae0/0xae0 [ 40.619318] ? ns_capable_common+0x117/0x140 [ 40.623711] nfnetlink_rcv+0x1b2/0x41b [ 40.627584] ? nfnetlink_rcv_batch+0x1710/0x1710 [ 40.632323] netlink_unicast+0x4d5/0x690 [ 40.636364] ? netlink_sendskb+0x110/0x110 [ 40.640606] netlink_sendmsg+0x717/0xcc0 [ 40.644649] ? nlmsg_notify+0x1a0/0x1a0 [ 40.648620] ? __sock_recv_ts_and_drops+0x540/0x540 [ 40.653623] ? nlmsg_notify+0x1a0/0x1a0 [ 40.657588] sock_sendmsg+0xc7/0x130 [ 40.661308] ___sys_sendmsg+0x7bb/0x8f0 [ 40.665274] ? copy_msghdr_from_user+0x440/0x440 [ 40.670024] ? do_huge_pmd_anonymous_page+0x939/0x1d70 [ 40.675310] ? prep_transhuge_page+0xa0/0xa0 [ 40.679701] ? check_preemption_disabled+0x41/0x2b0 [ 40.684701] ? mark_held_locks+0xf0/0xf0 [ 40.688772] ? __handle_mm_fault+0xf34/0x4370 [ 40.694056] ? errseq_sample+0x56/0x70 [ 40.697920] ? vmf_insert_mixed_mkwrite+0xa0/0xa0 [ 40.702756] ? find_held_lock+0x2d/0x110 [ 40.706796] ? find_held_lock+0x2d/0x110 [ 40.710836] ? __fget_light+0x1a2/0x230 [ 40.714794] __x64_sys_sendmsg+0x132/0x220 [ 40.719008] ? __sys_sendmsg+0x1b0/0x1b0 [ 40.723054] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.727788] ? trace_hardirqs_off_caller+0x69/0x210 [ 40.732783] ? do_syscall_64+0x21/0x670 [ 40.736761] do_syscall_64+0xf9/0x670 [ 40.740543] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.745712] RIP: 0033:0x440429 [ 40.748886] 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 [ 40.767887] RSP: 002b:00007ffc5f6a6c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.775664] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440429 [ 40.785007] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000