[   35.415686]  default_idle_call+0x36/0x90
[   35.419707]  do_idle+0x24e/0x3b0
[   35.423038]  cpu_startup_entry+0x18/0x20
[   35.427059]  rest_init+0xed/0xf0
[   35.430390]  start_kernel+0x72e/0x754
[   35.434153]  ? mem_encrypt_init+0xb/0xb
[   35.438091]  ? memcpy_orig+0x54/0x110
[   35.441856]  x86_64_start_reservations+0x2a/0x2c
[   35.446575]  x86_64_start_kernel+0x77/0x7a
[   35.450772]  secondary_startup_64+0xa5/0xa5
Warning: Permanently added 'ci-upstream-net-kasan-gce-0,10.128.15.195' (ECDSA) to the list of known hosts.
executing program
[   43.727237] ------------[ cut here ]------------
[   43.732050] WARNING: CPU: 1 PID: 2997 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   43.740339] Kernel panic - not syncing: panic_on_warn set ...
[   43.740339] 
[   43.747673] CPU: 1 PID: 2997 Comm: syzkaller952707 Not tainted 4.14.0-rc4+ #85
[   43.754994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.764310] Call Trace:
[   43.766867]  dump_stack+0x194/0x257
[   43.770462]  ? arch_local_irq_restore+0x53/0x53
[   43.775105]  panic+0x1e4/0x417
[   43.778261]  ? __warn+0x1d9/0x1d9
[   43.781681]  ? show_regs_print_info+0x65/0x65
[   43.786756]  ? kmalloc_slab+0x5d/0x70
[   43.790527]  __warn+0x1c4/0x1d9
[   43.793771]  ? kmalloc_slab+0x5d/0x70
[   43.797542]  report_bug+0x211/0x2d0
[   43.801138]  fixup_bug+0x40/0x90
[   43.804469]  do_trap+0x260/0x390
[   43.807804]  do_error_trap+0x120/0x390
[   43.811657]  ? lock_downgrade+0x990/0x990
[   43.815770]  ? do_trap+0x390/0x390
[   43.819277]  ? kmalloc_slab+0x5d/0x70
[   43.823046]  ? __ipv6_dev_get_saddr+0x33c/0x4f0
[   43.827684]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   43.832512]  do_invalid_op+0x1b/0x20
[   43.836198]  invalid_op+0x18/0x20
[   43.839617] RIP: 0010:kmalloc_slab+0x5d/0x70
[   43.843986] RSP: 0018:ffff8801ce31f4b0 EFLAGS: 00010246
[   43.849314] RAX: 0000000000000000 RBX: ffff8801ce31f748 RCX: 0000000000000007
[   43.856566] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   43.863801] RBP: ffff8801ce31f4b0 R08: ffff8801d95de8c0 R09: ffff8801ce31fb10
[   43.871035] R10: ffff8801ce7f25c0 R11: ffffed003b2bbd47 R12: ffff8801ce31fab0
[   43.878269] R13: ffff8801ce31fb10 R14: 00000000014080c0 R15: ffff8801cf7127c0
[   43.885521]  __kmalloc+0x25/0x760
[   43.888943]  ? inet6_dump_ifaddr+0x30/0x30
[   43.893142]  ? debug_check_no_locks_freed+0x3d0/0x3d0
[   43.898296]  ? ip6_setup_cork+0x1e8/0x15c0
[   43.902497]  ip6_setup_cork+0x1e8/0x15c0
[   43.906525]  ? sock_i_uid+0x8d/0xb0
[   43.910119]  ? __ip6_append_data.isra.43+0x3340/0x3340
[   43.915364]  ? ip6_pol_route_output+0x4c/0x60
[   43.919825]  ? ip6_pol_route_input+0x70/0x70
[   43.924199]  ? fib6_rule_lookup+0xdd/0x2a0
[   43.928401]  ip6_make_skb+0x282/0x530
[   43.932168]  ? ip_reply_glue_bits+0xb0/0xb0
[   43.936454]  ? ip6_push_pending_frames+0xe0/0xe0
[   43.941175]  ? ip6_dst_hoplimit+0x10d/0x420
[   43.945462]  ? ip6_route_output_flags+0x1f1/0x2b0
[   43.950273]  ? xfrm_lookup_route+0x4f/0x1a0
[   43.954561]  ? ip6_dst_lookup_flow+0x1ca/0x270
[   43.959111]  ? ip6_dst_hoplimit+0xc1/0x420
[   43.963311]  ? ip6_find_1stfragopt+0x240/0x240
[   43.967862]  udpv6_sendmsg+0x2769/0x3380
[   43.971891]  ? ip_reply_glue_bits+0xb0/0xb0
[   43.976184]  ? udpv6_setsockopt+0x80/0x80
[   43.980297]  ? lock_downgrade+0x990/0x990
[   43.984416]  ? release_sock+0x1d4/0x2a0
[   43.988354]  ? lock_downgrade+0x990/0x990
[   43.992465]  ? lock_downgrade+0x990/0x990
[   43.996587]  ? lock_release+0xd70/0xd70
[   44.000527]  ? lock_acquire+0x1d5/0x580
[   44.004464]  ? release_sock+0x74/0x2a0
[   44.008316]  ? lock_downgrade+0x990/0x990
[   44.012433]  ? do_raw_spin_trylock+0x190/0x190
[   44.016983]  ? ip6_datagram_release_cb+0xbf/0x520
[   44.021790]  ? ip6_datagram_dst_update+0x13d0/0x13d0
[   44.026859]  ? release_sock+0x1d4/0x2a0
[   44.030801]  ? _raw_spin_unlock_bh+0x30/0x40
[   44.035174]  ? release_sock+0x1d4/0x2a0
[   44.039118]  ? udp_v6_get_port+0x9c/0xc0
[   44.043150]  inet_sendmsg+0x11f/0x5e0
[   44.046913]  ? inet_sendmsg+0x11f/0x5e0
[   44.050853]  ? __might_sleep+0x95/0x190
[   44.054790]  ? inet_recvmsg+0x5f0/0x5f0
[   44.058730]  ? selinux_socket_sendmsg+0x36/0x40
[   44.063364]  ? security_socket_sendmsg+0x89/0xb0
[   44.068084]  ? inet_recvmsg+0x5f0/0x5f0
[   44.072026]  sock_sendmsg+0xca/0x110
[   44.075707]  SYSC_sendto+0x358/0x5a0
[   44.079388]  ? SYSC_connect+0x480/0x480
[   44.083333]  ? mm_fault_error+0x2c0/0x2c0
[   44.087448]  ? ipv6_setsockopt+0xa8/0x150
[   44.091564]  ? __do_page_fault+0xd60/0xd60
[   44.095772]  ? lockdep_sys_exit+0x47/0xf0
[   44.099886]  ? prepare_exit_to_usermode+0x1a0/0x2d0
[   44.104865]  ? perf_trace_sys_enter+0xc20/0xc20
[   44.109505]  SyS_sendto+0x40/0x50
[   44.112928]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   44.117647] RIP: 0033:0x440009
[   44.120802] RSP: 002b:00007ffe4212dd88 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
[   44.128474] RAX: ffffffffffffffda RBX: 00000000006ccd60 RCX: 0000000000440009
[   44.135708] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000006
[   44.142943] RBP: ffffffffffffffff R08: 0000000020e0afe4 R09: 000000000000001c
[   44.150179] R10: 0000000000000000 R11: 0000000000000212 R12: 505daaef76b36d7c
[   44.157413] R13: 04a17b4203d90165 R14: 0000000000000000 R15: 0000000000000000
[   44.164696] Dumping ftrace buffer:
[   44.168201]    (ftrace buffer empty)
[   44.171877] Kernel Offset: disabled
[   44.175470] Rebooting in 86400 seconds..