check_preemption_disabled: 1 callbacks suppressed
BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/8045
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is ip6_skb_dst_mtu include/net/ip6_route.h:245 [inline]
caller is ip6_finish_output+0x335/0xdc0 net/ipv6/ip6_output.c:149
CPU: 0 PID: 8045 Comm: syz-executor.4 Not tainted 5.1.0-rc3-next-20190405 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
 dev_recursion_level include/linux/netdevice.h:3052 [inline]
 ip6_skb_dst_mtu include/net/ip6_route.h:245 [inline]
 ip6_finish_output+0x335/0xdc0 net/ipv6/ip6_output.c:149
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x235/0x7f0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:433 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip6_xmit+0xe41/0x20c0 net/ipv6/ip6_output.c:275
 inet6_csk_xmit+0x2fb/0x5d0 net/ipv6/inet6_connection_sock.c:139
 __tcp_transmit_skb+0x1a32/0x3750 net/ipv4/tcp_output.c:1155
 tcp_transmit_skb net/ipv4/tcp_output.c:1171 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:3494 [inline]
 tcp_connect+0x1e47/0x4280 net/ipv4/tcp_output.c:3533
 tcp_v6_connect+0x150b/0x20a0 net/ipv6/tcp_ipv6.c:331
 __inet_stream_connect+0x83f/0xea0 net/ipv4/af_inet.c:659
 tcp_sendmsg_fastopen net/ipv4/tcp.c:1155 [inline]
 tcp_sendmsg_locked+0x231f/0x37f0 net/ipv4/tcp.c:1197
 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1431
 inet_sendmsg+0x147/0x5e0 net/ipv4/af_inet.c:802
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xdd/0x130 net/socket.c:661
 __sys_sendto+0x262/0x380 net/socket.c:1932
 __do_sys_sendto net/socket.c:1944 [inline]
 __se_sys_sendto net/socket.c:1940 [inline]
 __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1940
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4582b9
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbab4c53c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9
RDX: fffffffffffffcfc RSI: 0000000000000000 RDI: 0000000000000006
RBP: 000000000073bf00 R08: 000000002031e000 R09: 000000000000001c
R10: 0000000020000005 R11: 0000000000000246 R12: 00007fbab4c546d4
R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff
BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/8045
caller is dev_recursion_level include/linux/netdevice.h:3052 [inline]
caller is ip6_skb_dst_mtu include/net/ip6_route.h:245 [inline]
caller is ip6_finish_output+0x335/0xdc0 net/ipv6/ip6_output.c:149
CPU: 0 PID: 8045 Comm: syz-executor.4 Not tainted 5.1.0-rc3-next-20190405 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 __this_cpu_preempt_check+0x246/0x270 lib/smp_processor_id.c:47
 dev_recursion_level include/linux/netdevice.h:3052 [inline]
 ip6_skb_dst_mtu include/net/ip6_route.h:245 [inline]
 ip6_finish_output+0x335/0xdc0 net/ipv6/ip6_output.c:149
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x235/0x7f0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:433 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 NF_HOOK include/linux/netfilter.h:283 [inline]
 ip6_xmit+0xe41/0x20c0 net/ipv6/ip6_output.c:275
 inet6_csk_xmit+0x2fb/0x5d0 net/ipv6/inet6_connection_sock.c:139
 __tcp_transmit_skb+0x1a32/0x3750 net/ipv4/tcp_output.c:1155
 tcp_transmit_skb net/ipv4/tcp_output.c:1171 [inline]
 tcp_write_xmit+0xe39/0x5660 net/ipv4/tcp_output.c:2396
 __tcp_push_pending_frames+0xb4/0x350 net/ipv4/tcp_output.c:2572
 tcp_send_fin+0x149/0xbb0 net/ipv4/tcp_output.c:3120
 tcp_close+0xddf/0x10c0 net/ipv4/tcp.c:2419
 inet_release+0x105/0x1f0 net/ipv4/af_inet.c:432
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:474
 __sock_release+0xd3/0x2b0 net/socket.c:599
 sock_close+0x1b/0x30 net/socket.c:1247
 __fput+0x2e5/0x8d0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x14a/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4582b9
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbab4c53c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
RAX: 0000000000000007 RBX: 0000000000000002 RCX: 00000000004582b9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbab4c546d4
R13: 00000000004be777 R14: 00000000004cf3f0 R15: 00000000ffffffff