------------[ cut here ]------------
WARNING: CPU: 1 PID: 8759 at crypto/algapi.c:355 crypto_wait_for_test+0xbb/0xd0 crypto/algapi.c:355()
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8759 Comm: syz-executor1 Not tainted 4.4.128-gbd23e3a #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 e190950c244a0e0f ffff8801d68def18 ffffffff81e0daad
 ffffffff83a43ec0 ffff8800b9461800 ffffffff83bf0760 0000000000000009
 0000000000000163 ffff8801d68defd8 ffffffff81409eb4 0000000041b58ab3
Call Trace:
 [<ffffffff81e0daad>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81e0daad>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81409eb4>] panic+0x19e/0x38d kernel/panic.c:112
 [<ffffffff8140a0d8>] warn_slowpath_common.cold.6+0x20/0x20 kernel/panic.c:455
 [<ffffffff81130049>] warn_slowpath_null+0x29/0x30 kernel/panic.c:492
 [<ffffffff81cdf6eb>] crypto_wait_for_test+0xbb/0xd0 crypto/algapi.c:355
 [<ffffffff81cdf9d0>] crypto_register_instance+0x200/0x2f0 crypto/algapi.c:571
 [<ffffffff81ce61bc>] crypto_givcipher_default+0x3bc/0x5d0 crypto/ablkcipher.c:601
 [<ffffffff81ce6579>] crypto_lookup_skcipher+0x1a9/0x2b0 crypto/ablkcipher.c:658
 [<ffffffff81ce6784>] crypto_alloc_ablkcipher+0x54/0x170 crypto/ablkcipher.c:693
 [<ffffffff810f87ac>] rfc4106_set_hash_subkey arch/x86/crypto/aesni-intel_glue.c:836 [inline]
 [<ffffffff810f87ac>] common_rfc4106_set_key+0x11c/0x670 arch/x86/crypto/aesni-intel_glue.c:901
 [<ffffffff81ce1d8f>] crypto_aead_setkey+0xaf/0x1d0 crypto/aead.c:60
 [<ffffffff81d1dfa1>] cryptd_aead_setkey+0x41/0x50 crypto/cryptd.c:679
 [<ffffffff81ce1e4c>] setkey_unaligned crypto/aead.c:46 [inline]
 [<ffffffff81ce1e4c>] crypto_aead_setkey+0x16c/0x1d0 crypto/aead.c:58
 [<ffffffff810f7f91>] rfc4106_set_key+0x41/0x50 arch/x86/crypto/aesni-intel_glue.c:910
 [<ffffffff81ce1d8f>] crypto_aead_setkey+0xaf/0x1d0 crypto/aead.c:60
 [<ffffffff81ce1ef7>] aead_geniv_setkey+0x47/0x60 crypto/aead.c:180
 [<ffffffff81ce1d8f>] crypto_aead_setkey+0xaf/0x1d0 crypto/aead.c:60
 [<ffffffff83508f81>] esp_init_aead net/ipv6/esp6.c:518 [inline]
 [<ffffffff83508f81>] esp6_init_state+0x461/0xee0 net/ipv6/esp6.c:636
 [<ffffffff833e4809>] __xfrm_init_state+0x3f9/0xb50 net/xfrm/xfrm_state.c:2065
 [<ffffffff834033e2>] xfrm_state_construct net/xfrm/xfrm_user.c:585 [inline]
 [<ffffffff834033e2>] xfrm_add_sa+0x1a82/0x2d40 net/xfrm/xfrm_user.c:631
 [<ffffffff833f38f6>] xfrm_user_rcv_msg+0x3d6/0x6c0 net/xfrm/xfrm_user.c:2544
 [<ffffffff830b7bf5>] netlink_rcv_skb+0x145/0x370 net/netlink/af_netlink.c:2352
 [<ffffffff833f04af>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2552
 [<ffffffff830b67c9>] netlink_unicast_kernel net/netlink/af_netlink.c:1270 [inline]
 [<ffffffff830b67c9>] netlink_unicast+0x4e9/0x700 net/netlink/af_netlink.c:1296
 [<ffffffff830b716b>] netlink_sendmsg+0x78b/0xc10 net/netlink/af_netlink.c:1850