BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller663884/3318
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3318 Comm: syzkaller663884 Not tainted 4.9.68-gfb66dc2 #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8d37668 ffffffff81d90889 0000000000000001 ffffffff83c17800
 ffffffff83f42ec0 ffff8801d1ae6000 0000000000000003 ffff8801d8d376a8
 ffffffff81df7854 ffff8801d8d376c0 ffffffff83f42ec0 dffffc0000000000
Call Trace:
 [<ffffffff81d90889>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90889>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81df7854>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81df78bc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833f3f78>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833f3f78>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83360470>] ipcomp4_init_state+0xb0/0x7d0 net/ipv4/ipcomp.c:137
 [<ffffffff833d2677>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d2dda>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff8356cb49>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff8356cb49>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff835645ee>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff83565e99>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ecfb9a>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ecfb9a>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed1791>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1968
 [<ffffffff82ed37c6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2002
 [<ffffffff82fd5d9a>] C_SYSC_sendmsg net/compat.c:734 [inline]
 [<ffffffff82fd5d9a>] compat_SyS_sendmsg+0x2a/0x40 net/compat.c:732
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac021>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124