BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
BUG: using __this_cpu_read() in preemptible [00000000] code: syzkaller556696/3798
caller is __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
CPU: 0 PID: 3798 Comm: syzkaller556696 Not tainted 4.9.81-g1a93831 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d7c1f418 ffffffff81d94e69 0000000000000000 ffffffff83c18e00
 ffffffff83f45ae0 ffff8801b4e6e000 0000000000000003 ffff8801d7c1f458
 ffffffff81dfc464 ffff8801d7c1f470 ffffffff83f45ae0 dffffc0000000000
Call Trace:
 [<ffffffff81d94e69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94e69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81dfc464>] check_preemption_disabled+0x1d4/0x200 lib/smp_processor_id.c:46
 [<ffffffff81dfc4cc>] __this_cpu_preempt_check+0x1c/0x20 lib/smp_processor_id.c:62
 [<ffffffff833fd268>] ipcomp_alloc_tfms net/xfrm/xfrm_ipcomp.c:286 [inline]
 [<ffffffff833fd268>] ipcomp_init_state+0x188/0x930 net/xfrm/xfrm_ipcomp.c:363
 [<ffffffff83513875>] ipcomp6_init_state+0xb5/0x820 net/ipv6/ipcomp6.c:165
 [<ffffffff833db957>] __xfrm_init_state+0x3e7/0xb30 net/xfrm/xfrm_state.c:2096
 [<ffffffff833faab6>] xfrm_state_construct net/xfrm/xfrm_user.c:590 [inline]
 [<ffffffff833faab6>] xfrm_add_sa+0x1916/0x2e40 net/xfrm/xfrm_user.c:639
 [<ffffffff833eb0fd>] xfrm_user_rcv_msg+0x40d/0x6a0 net/xfrm/xfrm_user.c:2525
 [<ffffffff8309552e>] netlink_rcv_skb+0x13e/0x370 net/netlink/af_netlink.c:2351
 [<ffffffff833e75ff>] xfrm_netlink_rcv+0x6f/0x90 net/xfrm/xfrm_user.c:2533
 [<ffffffff830940b1>] netlink_unicast_kernel net/netlink/af_netlink.c:1275 [inline]
 [<ffffffff830940b1>] netlink_unicast+0x511/0x750 net/netlink/af_netlink.c:1301
 [<ffffffff83094bd8>] netlink_sendmsg+0x8e8/0xc50 net/netlink/af_netlink.c:1847
 [<ffffffff82ed7baa>] sock_sendmsg_nosec net/socket.c:635 [inline]
 [<ffffffff82ed7baa>] sock_sendmsg+0xca/0x110 net/socket.c:645
 [<ffffffff82ed97c1>] ___sys_sendmsg+0x6d1/0x7e0 net/socket.c:1969
 [<ffffffff82edb7f6>] __sys_sendmsg+0xd6/0x190 net/socket.c:2003
 [<ffffffff82edb8dd>] SYSC_sendmsg net/socket.c:2014 [inline]
 [<ffffffff82edb8dd>] SyS_sendmsg+0x2d/0x50 net/socket.c:2010
 [<ffffffff81006505>] do_syscall_64+0x1a5/0x490 arch/x86/entry/common.c:282
 [<ffffffff838b3dbd>] entry_SYSCALL_64_after_swapgs+0x47/0xc5
random: crng init done