kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 14321 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #348 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:182 [inline] RIP: 0010:inet6_lhash2_lookup+0xc4/0x640 net/ipv6/inet6_hashtables.c:132 Code: f2 f2 f2 f2 c7 40 0c 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 47 66 84 fa 48 8d 7b 40 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 59 05 00 00 4c 8d a5 58 ff ff ff 48 8b 5b 40 RSP: 0018:ffff8881dae07010 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000014 RDX: 0000000000000100 RSI: ffffffff86fb1e49 RDI: 0000000000000040 RBP: ffff8881dae07128 R08: ffff888196ee2e3c R09: 00000000000046eb R10: ffffed1039921608 R11: ffff8881cc90b043 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888196ee2e4c R15: ffffffff8bc662ec FS: 00007f1163814700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf4c727518 CR3: 00000001c12cc000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> inet6_lookup_listener+0x17d/0x790 net/ipv6/inet6_hashtables.c:167 __inet6_lookup include/net/inet6_hashtables.h:81 [inline] __inet6_lookup_skb include/net/inet6_hashtables.h:98 [inline] dccp_v6_rcv+0x12b5/0x1ce9 net/dccp/ipv6.c:715 ip6_protocol_deliver_rcu+0x381/0x1950 net/ipv6/ip6_input.c:394 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:434 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0xe9/0x600 net/ipv6/ip6_input.c:443 dst_input include/net/dst.h:450 [inline] ip6_rcv_finish+0x17a/0x330 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0x115/0x640 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x14d/0x200 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1e0 net/core/dev.c:5083 process_backlog+0x24e/0x7a0 net/core/dev.c:5923 napi_poll net/core/dev.c:6346 [inline] net_rx_action+0x7fa/0x19b0 net/core/dev.c:6412 __do_softirq+0x308/0xb7e kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1027 </IRQ> do_softirq.part.14+0x126/0x160 kernel/softirq.c:337 do_softirq kernel/softirq.c:329 [inline] __local_bh_enable_ip+0x21d/0x260 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:696 [inline] ip6_finish_output2+0xcef/0x2940 net/ipv6/ip6_output.c:121 ip6_finish_output+0x58c/0xc60 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x232/0x9d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ip6_xmit+0xf1c/0x24d0 net/ipv6/ip6_output.c:275 inet6_csk_xmit+0x378/0x630 net/ipv6/inet6_connection_sock.c:139 dccp_transmit_skb+0x98c/0x12e0 net/dccp/output.c:142 dccp_connect+0x39a/0x6e0 net/dccp/output.c:564 dccp_v6_connect+0x1959/0x1f20 net/dccp/ipv6.c:950 __inet_stream_connect+0x992/0x1150 net/ipv4/af_inet.c:655 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719 __sys_connect+0x37d/0x4c0 net/socket.c:1664 __do_sys_connect net/socket.c:1675 [inline] __se_sys_connect net/socket.c:1672 [inline] __x64_sys_connect+0x73/0xb0 net/socket.c:1672 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1163813c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 RDX: 000000000000001c RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11638146d4 R13: 00000000004bdc27 R14: 00000000004cd638 R15: 00000000ffffffff Modules linked in: ---[ end trace 0f0f92ef078757bf ]--- RIP: 0010:__read_once_size include/linux/compiler.h:182 [inline] RIP: 0010:inet6_lhash2_lookup+0xc4/0x640 net/ipv6/inet6_hashtables.c:132 Code: f2 f2 f2 f2 c7 40 0c 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 47 66 84 fa 48 8d 7b 40 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 59 05 00 00 4c 8d a5 58 ff ff ff 48 8b 5b 40 kobject: 'loop2' (000000009a4611f5): kobject_uevent_env RSP: 0018:ffff8881dae07010 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000014 RDX: 0000000000000100 RSI: ffffffff86fb1e49 RDI: 0000000000000040 RBP: ffff8881dae07128 R08: ffff888196ee2e3c R09: 00000000000046eb kobject: 'loop2' (000000009a4611f5): fill_kobj_path: path = '/devices/virtual/block/loop2' R10: ffffed1039921608 R11: ffff8881cc90b043 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888196ee2e4c R15: ffffffff8bc662ec FS: 00007f1163814700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'loop5' (000000000fba5423): kobject_uevent_env CR2: 00007fdf4c727518 CR3: 00000001c12cc000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'loop5' (000000000fba5423): fill_kobj_path: path = '/devices/virtual/block/loop5' DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400