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: 1 PID: 8514 Comm: syz-executor.3 Not tainted 5.0.0-rc7-next-20190219 #38 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dev_get_by_index_rcu+0x2e/0x150 net/core/dev.c:840 Code: 41 56 41 55 41 89 f5 41 54 53 48 89 fb e8 4a c0 fa fb 48 8d bb c0 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 0a 01 00 00 48 8b 93 c0 01 00 00 41 0f b6 c5 48 RSP: 0018:ffff8880ae907500 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00ffff8880863241 RCX: ffffffff85daf27b RDX: 001ffff11010c680 RSI: ffffffff8575a1c6 RDI: 00ffff8880863401 RBP: ffff8880ae907520 R08: ffff88808bdc2440 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff888086335801 R13: 0000000000000001 R14: 0000000000000000 R15: 00ffff8880863241 FS: 00007f5873ce5700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f221000 CR3: 00000000a83ee000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netif_index_is_l3_master include/net/l3mdev.h:138 [inline] ip_send_unicast_reply+0xcc4/0x11b0 net/ipv4/ip_output.c:1588 tcp_v4_send_reset+0x1051/0x2140 net/ipv4/tcp_ipv4.c:778 tcp_v4_rcv+0x209e/0x3730 net/ipv4/tcp_ipv4.c:1939 ip_protocol_deliver_rcu+0x60/0x8e0 net/ipv4/ip_input.c:208 ip_local_deliver_finish+0x23b/0x390 net/ipv4/ip_input.c:234 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_local_deliver+0x1e9/0x520 net/ipv4/ip_input.c:255 dst_input include/net/dst.h:450 [inline] ip_rcv_finish+0x1db/0x2f0 net/ipv4/ip_input.c:414 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ip_rcv+0xe8/0x3f0 net/ipv4/ip_input.c:524 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 process_backlog+0x206/0x750 net/core/dev.c:5923 napi_poll net/core/dev.c:6346 [inline] net_rx_action+0x4fa/0x1070 net/core/dev.c:6412 __do_softirq+0x266/0x95a kernel/softirq.c:293 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1027 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:338 do_softirq kernel/softirq.c:330 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:190 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:684 [inline] ip_finish_output2+0x99c/0x1740 net/ipv4/ip_output.c:231 ip_finish_output+0x73c/0xd50 net/ipv4/ip_output.c:317 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_output+0x21f/0x670 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:444 [inline] ip_local_out+0xc4/0x1b0 net/ipv4/ip_output.c:124 __ip_queue_xmit+0x86f/0x1bf0 net/ipv4/ip_output.c:505 ip_queue_xmit+0x5a/0x70 include/net/ip.h:198 __tcp_transmit_skb+0x1a32/0x3730 net/ipv4/tcp_output.c:1159 tcp_transmit_skb net/ipv4/tcp_output.c:1175 [inline] tcp_send_syn_data net/ipv4/tcp_output.c:3498 [inline] tcp_connect+0x1e67/0x4330 net/ipv4/tcp_output.c:3537 tcp_v4_connect+0x1514/0x1c40 net/ipv4/tcp_ipv4.c:315 __inet_stream_connect+0x83f/0xea0 net/ipv4/af_inet.c:655 tcp_sendmsg_fastopen net/ipv4/tcp.c:1163 [inline] tcp_sendmsg_locked+0x2347/0x34b0 net/ipv4/tcp.c:1205 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1440 inet_sendmsg+0x147/0x5d0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x262/0x380 net/socket.c:1808 __do_sys_sendto net/socket.c:1820 [inline] __se_sys_sendto net/socket.c:1816 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1816 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 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:00007f5873ce4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457e29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000020e68000 R09: 0000000000000010 R10: 00000000200007fd R11: 0000000000000246 R12: 00007f5873ce56d4 R13: 00000000004c54e7 R14: 00000000004d9388 R15: 00000000ffffffff Modules linked in: ---[ end trace 7703f7157beed152 ]--- RIP: 0010:dev_get_by_index_rcu+0x2e/0x150 net/core/dev.c:840 Code: 41 56 41 55 41 89 f5 41 54 53 48 89 fb e8 4a c0 fa fb 48 8d bb c0 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 0a 01 00 00 48 8b 93 c0 01 00 00 41 0f b6 c5 48 RSP: 0018:ffff8880ae907500 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 00ffff8880863241 RCX: ffffffff85daf27b RDX: 001ffff11010c680 RSI: ffffffff8575a1c6 RDI: 00ffff8880863401 RBP: ffff8880ae907520 R08: ffff88808bdc2440 R09: ffffed1015d25bc8 R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff888086335801 R13: 0000000000000001 R14: 0000000000000000 R15: 00ffff8880863241 FS: 00007f5873ce5700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f221000 CR3: 00000000a83ee000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400