nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. check_preemption_disabled: 1 callbacks suppressed BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/9113 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: 1 PID: 9113 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] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:178 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1735 udp_v6_send_skb.isra.0+0x839/0x14f0 net/ipv6/udp.c:1179 udp_v6_push_pending_frames+0x295/0x3b0 net/ipv6/udp.c:1212 udpv6_sendmsg+0x1b18/0x28d0 net/ipv6/udp.c:1503 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:00007f11992ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9 RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11993006d4 R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/9113 caller is dev_recursion_level include/linux/netdevice.h:3052 [inline] caller is ip6_fragment+0x100/0x3980 net/ipv6/ip6_output.c:600 CPU: 0 PID: 9113 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_fragment+0x100/0x3980 net/ipv6/ip6_output.c:600 ip6_finish_output+0x8a3/0xdc0 net/ipv6/ip6_output.c:152 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] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:178 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1735 udp_v6_send_skb.isra.0+0x839/0x14f0 net/ipv6/udp.c:1179 udp_v6_push_pending_frames+0x295/0x3b0 net/ipv6/udp.c:1212 udpv6_sendmsg+0x1b18/0x28d0 net/ipv6/udp.c:1503 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:00007f11992ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9 RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11993006d4 R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/9113 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_fragment+0x244/0x3980 net/ipv6/ip6_output.c:617 CPU: 0 PID: 9113 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_fragment+0x244/0x3980 net/ipv6/ip6_output.c:617 ip6_finish_output+0x8a3/0xdc0 net/ipv6/ip6_output.c:152 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] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:178 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1735 udp_v6_send_skb.isra.0+0x839/0x14f0 net/ipv6/udp.c:1179 udp_v6_push_pending_frames+0x295/0x3b0 net/ipv6/udp.c:1212 udpv6_sendmsg+0x1b18/0x28d0 net/ipv6/udp.c:1503 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:00007f11992ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9 RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11993006d4 R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/9113 caller is dev_recursion_level include/linux/netdevice.h:3052 [inline] caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705 CPU: 0 PID: 9113 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] sk_mc_loop+0x1d/0x210 net/core/sock.c:705 ip6_finish_output2+0x17a5/0x2550 net/ipv6/ip6_output.c:73 ip6_fragment+0x2bd1/0x3980 net/ipv6/ip6_output.c:735 ip6_finish_output+0x8a3/0xdc0 net/ipv6/ip6_output.c:152 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] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:178 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1735 udp_v6_send_skb.isra.0+0x839/0x14f0 net/ipv6/udp.c:1179 udp_v6_push_pending_frames+0x295/0x3b0 net/ipv6/udp.c:1212 udpv6_sendmsg+0x1b18/0x28d0 net/ipv6/udp.c:1503 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:00007f11992ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9 RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11993006d4 R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor.4/9113 caller is dev_recursion_level include/linux/netdevice.h:3052 [inline] caller is sk_mc_loop+0x1d/0x210 net/core/sock.c:705 CPU: 1 PID: 9113 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] sk_mc_loop+0x1d/0x210 net/core/sock.c:705 ip6_finish_output2+0x17a5/0x2550 net/ipv6/ip6_output.c:73 ip6_fragment+0x2bd1/0x3980 net/ipv6/ip6_output.c:735 ip6_finish_output+0x8a3/0xdc0 net/ipv6/ip6_output.c:152 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] ip6_local_out+0xc4/0x1b0 net/ipv6/output_core.c:178 ip6_send_skb+0xbb/0x350 net/ipv6/ip6_output.c:1735 udp_v6_send_skb.isra.0+0x839/0x14f0 net/ipv6/udp.c:1179 udp_v6_push_pending_frames+0x295/0x3b0 net/ipv6/udp.c:1212 udpv6_sendmsg+0x1b18/0x28d0 net/ipv6/udp.c:1503 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:00007f11992ffc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004582b9 RDX: 000000000000000c RSI: 0000000020000100 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11993006d4 R13: 00000000004c59b6 R14: 00000000004d9d10 R15: 00000000ffffffff