audit: type=1400 audit(1564286269.474:39): avc: denied { read } for pid=7913 comm="syz-executor101" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 Own node identity ac14141, cluster identity 4711 New replicast peer: 172.20.20.0 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: 7913 Comm: syz-executor101 Not tainted 4.19.61 #35 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:458 [inline] RIP: 0010:iptunnel_xmit+0x6cc/0x9b0 net/ipv4/ip_tunnel_core.c:94 Code: 01 eb bb e8 06 10 8a fb bf 01 00 00 00 e8 0c f0 67 fb 49 8d bd 88 05 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 9e 02 00 00 49 8b 9d 88 05 00 00 e8 de 53 44 fd RSP: 0018:ffff8880969df038 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000b1 RSI: ffffffff85e13fca RDI: 0000000000000588 RBP: ffff8880969df098 R08: ffff888096988280 R09: ffff888096988b70 R10: ffff8880969deec0 R11: 0000000000000000 R12: 00000000000000fc R13: 0000000000000000 R14: ffff888096bde514 R15: ffff8880968963c0 FS: 0000000002516880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000a9b67000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp_tunnel_xmit_skb+0x242/0x320 net/ipv4/udp_tunnel.c:182 tipc_udp_xmit.isra.0+0x7a7/0xbe0 net/tipc/udp_media.c:180 tipc_udp_send_msg+0x28c/0x490 net/tipc/udp_media.c:245 tipc_bearer_xmit_skb+0x16c/0x360 net/tipc/bearer.c:501 tipc_enable_bearer+0xabe/0xd20 net/tipc/bearer.c:326 __tipc_nl_bearer_enable+0x2d1/0x3b0 net/tipc/bearer.c:896 tipc_nl_bearer_enable+0x23/0x40 net/tipc/bearer.c:904 genl_family_rcv_msg+0x6db/0xd30 net/netlink/genetlink.c:602 genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:627 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4458d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 9b d4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc969dc5e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004458d9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007ffc969dc600 R08: 0000000000000000 R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000403290 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#2] PREEMPT SMP KASAN CPU: 0 PID: 7913 Comm: syz-executor101 Tainted: G D 4.19.61 #35 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:458 [inline] RIP: 0010:iptunnel_xmit+0x6cc/0x9b0 net/ipv4/ip_tunnel_core.c:94 Code: 01 eb bb e8 06 10 8a fb bf 01 00 00 00 e8 0c f0 67 fb 49 8d bd 88 05 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 9e 02 00 00 49 8b 9d 88 05 00 00 e8 de 53 44 fd RSP: 0018:ffff8880ae807888 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000b1 RSI: ffffffff85e13fca RDI: 0000000000000588 RBP: ffff8880ae8078e8 R08: ffff888096988280 R09: ffffed1015d05cc3 R10: ffff8880ae807710 R11: ffff8880ae82e613 R12: 00000000000000fc R13: 0000000000000000 R14: ffff888095e4db94 R15: ffff8880920017c0 FS: 0000000002516880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000a9b67000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udp_tunnel_xmit_skb+0x242/0x320 net/ipv4/udp_tunnel.c:182 tipc_udp_xmit.isra.0+0x7a7/0xbe0 net/tipc/udp_media.c:180 tipc_udp_send_msg+0x28c/0x490 net/tipc/udp_media.c:245 tipc_bearer_xmit_skb+0x16c/0x360 net/tipc/bearer.c:501 tipc_disc_timeout+0x933/0xd60 net/tipc/discover.c:332 call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326 expire_timers kernel/time/timer.c:1363 [inline] __run_timers kernel/time/timer.c:1682 [inline] __run_timers kernel/time/timer.c:1650 [inline] run_timer_softirq+0x652/0x1700 kernel/time/timer.c:1695 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:891 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:788 [inline] RIP: 0010:oops_end+0x61/0xf0 arch/x86/kernel/dumpstack.c:343 Code: 00 00 00 c7 05 5c c6 49 07 ff ff ff ff e8 37 63 19 00 83 2d 18 04 53 08 01 74 36 48 83 3d 8e e0 4c 07 00 74 53 48 89 df 57 9d <0f> 1f 44 00 00 e8 e5 69 19 00 be 02 00 00 00 48 c7 c7 60 67 78 89 RSP: 0018:ffff8880969deef0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: ffff888096988280 RBX: 0000000000000282 RCX: ffffffff813ec6c1 RDX: 0000000000000000 RSI: ffffffff813ec689 RDI: 0000000000000282 RBP: ffff8880969def08 R08: ffff888096988280 R09: fffffbfff1161ef1 R10: fffffbfff1161ef0 R11: 0000000000000003 R12: ffff8880969def88 R13: 000000000000000b R14: ffffffff8744ea80 R15: 0000000000000000 die+0x3e/0x48 arch/x86/kernel/dumpstack.c:405 do_general_protection+0x25d/0x300 arch/x86/kernel/traps.c:561 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1202 RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:458 [inline] RIP: 0010:iptunnel_xmit+0x6cc/0x9b0 net/ipv4/ip_tunnel_core.c:94 Code: 01 eb bb e8 06 10 8a fb bf 01 00 00 00 e8 0c f0 67 fb 49 8d bd 88 05 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 9e 02 00 00 49 8b 9d 88 05 00 00 e8 de 53 44 fd RSP: 0018:ffff8880969df038 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000b1 RSI: ffffffff85e13fca RDI: 0000000000000588 RBP: ffff8880969df098 R08: ffff888096988280 R09: ffff888096988b70 R10: ffff8880969deec0 R11: 0000000000000000 R12: 00000000000000fc R13: 0000000000000000 R14: ffff888096bde514 R15: ffff8880968963c0 udp_tunnel_xmit_skb+0x242/0x320 net/ipv4/udp_tunnel.c:182 tipc_udp_xmit.isra.0+0x7a7/0xbe0 net/tipc/udp_media.c:180 tipc_udp_send_msg+0x28c/0x490 net/tipc/udp_media.c:245 tipc_bearer_xmit_skb+0x16c/0x360 net/tipc/bearer.c:501 tipc_enable_bearer+0xabe/0xd20 net/tipc/bearer.c:326 __tipc_nl_bearer_enable+0x2d1/0x3b0 net/tipc/bearer.c:896 tipc_nl_bearer_enable+0x23/0x40 net/tipc/bearer.c:904 genl_family_rcv_msg+0x6db/0xd30 net/netlink/genetlink.c:602 genl_rcv_msg+0xca/0x16c net/netlink/genetlink.c:627 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4458d9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 9b d4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc969dc5e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004458d9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007ffc969dc600 R08: 0000000000000000 R09: 0000000001bbbbbb R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000403290 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace ae893f5a54980602 ]--- RIP: 0010:iptunnel_xmit_stats include/net/ip_tunnels.h:458 [inline] RIP: 0010:iptunnel_xmit+0x6cc/0x9b0 net/ipv4/ip_tunnel_core.c:94 Code: 01 eb bb e8 06 10 8a fb bf 01 00 00 00 e8 0c f0 67 fb 49 8d bd 88 05 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 9e 02 00 00 49 8b 9d 88 05 00 00 e8 de 53 44 fd RSP: 0018:ffff8880969df038 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000000000b1 RSI: ffffffff85e13fca RDI: 0000000000000588 RBP: ffff8880969df098 R08: ffff888096988280 R09: ffff888096988b70 R10: ffff8880969deec0 R11: 0000000000000000 R12: 00000000000000fc R13: 0000000000000000 R14: ffff888096bde514 R15: ffff8880968963c0 FS: 0000000002516880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 00000000a9b67000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400