[   28.360259]  ? trace_hardirqs_on+0xd/0x10
[   28.364368]  default_idle+0xbf/0x460
[   28.368045]  ? __sched_text_end+0x4/0x4
[   28.371996]  arch_cpu_idle+0xa/0x10
[   28.375586]  default_idle_call+0x36/0x90
[   28.379609]  do_idle+0x24e/0x3b0
[   28.382938]  ? complete+0x6a/0x80
[   28.386357]  cpu_startup_entry+0x18/0x20
[   28.390392]  start_secondary+0x2ea/0x3f0
[   28.394416]  secondary_startup_64+0xa5/0xa5
Warning: Permanently added 'ci-upstream-net-kasan-gce-7,10.128.15.211' (ECDSA) to the list of known hosts.
executing program
[   34.357880] ------------[ cut here ]------------
[   34.362654] WARNING: CPU: 0 PID: 2997 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   34.370514] Kernel panic - not syncing: panic_on_warn set ...
[   34.370514] 
[   34.377840] CPU: 0 PID: 2997 Comm: syzkaller747806 Not tainted 4.14.0-rc4+ #85
[   34.385161] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.394477] Call Trace:
[   34.397032]  dump_stack+0x194/0x257
[   34.400624]  ? arch_local_irq_restore+0x53/0x53
[   34.405264]  panic+0x1e4/0x417
[   34.408421]  ? __warn+0x1d9/0x1d9
[   34.411836]  ? show_regs_print_info+0x65/0x65
[   34.416302]  ? kmalloc_slab+0x5d/0x70
[   34.420065]  __warn+0x1c4/0x1d9
[   34.423308]  ? kmalloc_slab+0x5d/0x70
[   34.427073]  report_bug+0x211/0x2d0
[   34.430668]  fixup_bug+0x40/0x90
[   34.434002]  do_trap+0x260/0x390
[   34.437337]  do_error_trap+0x120/0x390
[   34.441189]  ? lock_downgrade+0x990/0x990
[   34.445302]  ? do_trap+0x390/0x390
[   34.448805]  ? kmalloc_slab+0x5d/0x70
[   34.452574]  ? __ipv6_dev_get_saddr+0x33c/0x4f0
[   34.457210]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.462020]  do_invalid_op+0x1b/0x20
[   34.465696]  invalid_op+0x18/0x20
[   34.469111] RIP: 0010:kmalloc_slab+0x5d/0x70
[   34.473480] RSP: 0018:ffff8801cdcf74b0 EFLAGS: 00010246
[   34.478805] RAX: 0000000000000000 RBX: ffff8801cdcf7748 RCX: 0000000000000007
[   34.486040] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   34.493276] RBP: ffff8801cdcf74b0 R08: ffff8801ce4b8a80 R09: ffff8801cdcf7b10
[   34.500683] R10: ffff8801cdc7e340 R11: ffffed0039c9717f R12: ffff8801cdcf7ab0
[   34.507916] R13: ffff8801cdcf7b10 R14: 00000000014080c0 R15: ffff8801ce8327c0
[   34.515161]  __kmalloc+0x25/0x760
[   34.518578]  ? inet6_dump_ifaddr+0x30/0x30
[   34.522774]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   34.528361]  ? ip6_setup_cork+0x1e8/0x15c0
[   34.532565]  ip6_setup_cork+0x1e8/0x15c0
[   34.536591]  ? sock_i_uid+0x8d/0xb0
[   34.540188]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   34.545433]  ? ip6_pol_route_output+0x4c/0x60
[   34.549890]  ? ip6_pol_route_input+0x70/0x70
[   34.554265]  ? fib6_rule_lookup+0xdd/0x2a0
[   34.558466]  ip6_make_skb+0x282/0x530
[   34.562236]  ? ip_reply_glue_bits+0xb0/0xb0
[   34.566523]  ? ip6_push_pending_frames+0xe0/0xe0
[   34.571242]  ? ip6_dst_hoplimit+0x10d/0x420
[   34.575528]  ? ip6_route_output_flags+0x1f1/0x2b0
[   34.580339]  ? xfrm_lookup_route+0x4f/0x1a0
[   34.584626]  ? ip6_dst_lookup_flow+0x1ca/0x270
[   34.589174]  ? ip6_dst_hoplimit+0xc1/0x420
[   34.593371]  ? ip6_find_1stfragopt+0x240/0x240
[   34.597922]  udpv6_sendmsg+0x2769/0x3380
[   34.601949]  ? ip_reply_glue_bits+0xb0/0xb0
[   34.606240]  ? udpv6_setsockopt+0x80/0x80
[   34.610351]  ? lock_downgrade+0x990/0x990
[   34.614466]  ? release_sock+0x1d4/0x2a0
[   34.618404]  ? lock_downgrade+0x990/0x990
[   34.622515]  ? lock_downgrade+0x990/0x990
[   34.626626]  ? lock_release+0xd70/0xd70
[   34.630565]  ? lock_acquire+0x1d5/0x580
[   34.634502]  ? release_sock+0x74/0x2a0
[   34.638353]  ? lock_downgrade+0x990/0x990
[   34.642466]  ? do_raw_spin_trylock+0x190/0x190
[   34.647014]  ? ip6_datagram_release_cb+0xbf/0x520
[   34.651820]  ? ip6_datagram_dst_update+0x13d0/0x13d0
[   34.656885]  ? release_sock+0x1d4/0x2a0
[   34.660825]  ? _raw_spin_unlock_bh+0x30/0x40
[   34.665196]  ? release_sock+0x1d4/0x2a0
[   34.669137]  ? udp_v6_get_port+0x9c/0xc0
[   34.673165]  inet_sendmsg+0x11f/0x5e0
[   34.676928]  ? inet_sendmsg+0x11f/0x5e0
[   34.680864]  ? __might_sleep+0x95/0x190
[   34.684801]  ? inet_recvmsg+0x5f0/0x5f0
[   34.688741]  ? selinux_socket_sendmsg+0x36/0x40
[   34.693374]  ? security_socket_sendmsg+0x89/0xb0
[   34.698092]  ? inet_recvmsg+0x5f0/0x5f0
[   34.702031]  sock_sendmsg+0xca/0x110
[   34.705710]  SYSC_sendto+0x358/0x5a0
[   34.709392]  ? SYSC_connect+0x480/0x480
[   34.713336]  ? mm_fault_error+0x2c0/0x2c0
[   34.717447]  ? ipv6_setsockopt+0xa8/0x150
[   34.721563]  ? __do_page_fault+0xd60/0xd60
[   34.725765]  ? lockdep_sys_exit+0x47/0xf0
[   34.729875]  ? prepare_exit_to_usermode+0x1a0/0x2d0
[   34.734853]  ? perf_trace_sys_enter+0xc20/0xc20
[   34.739487]  SyS_sendto+0x40/0x50
[   34.742906]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   34.747622] RIP: 0033:0x43ff99
[   34.750774] RSP: 002b:00007ffc6bf69448 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   34.758443] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043ff99
[   34.765674] RDX: 0000000000000000 RSI: 0000000020fd1000 RDI: 0000000000000003
[   34.772908] RBP: 505daaef76b36d7c R08: 0000000020e0afe4 R09: 000000000000001c
[   34.780141] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   34.787375] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   34.794655] Dumping ftrace buffer:
[   34.798158]    (ftrace buffer empty)
[   34.801832] Kernel Offset: disabled
[   34.805423] Rebooting in 86400 seconds..