BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 1 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000001 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller672526/3319
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3319 Comm: syzkaller672526 Not tainted 4.9.76-gf0f6293 #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c8b476c8 ffffffff81d93149 0000000000000000 ffffffff83c17e00
 ffffffff83f44900 ffff8801cac89800 0000000000000003 ffff8801c8b47708
 ffffffff81dfa714 ffff8801c8b47720 ffffffff83f44900 dffffc0000000000
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfa714>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfa77c>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fa7f8>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fa7f8>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83510575>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833d8ee7>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833d964a>] xfrm_init_state+0x1a/0x20 net/xfrm/xfrm_state.c:2122
 [<ffffffff83573139>] pfkey_msg2xfrm_state net/key/af_key.c:1281 [inline]
 [<ffffffff83573139>] pfkey_add+0x1fb9/0x3470 net/key/af_key.c:1498
 [<ffffffff8356abde>] pfkey_process+0x61e/0x730 net/key/af_key.c:2826
 [<ffffffff8356c489>] pfkey_sendmsg+0x3a9/0x760 net/key/af_key.c:3670
 [<ffffffff82ed5baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed5baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed77a1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82ed97d6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82ed98bd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82ed98bd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff838b0aa8>] entry_SYSCALL_64_fastpath+0x23/0xe2