IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready kasan: GPF could be caused by NULL-ptr deref or user memory access IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready audit: type=1400 audit(1568966482.527:42): avc: denied { write } for pid=7059 comm="syz-executor.5" 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 bridge0: port 2(bridge_slave_1) entered blocking state general protection fault: 0000 [#1] PREEMPT SMP KASAN bridge0: port 2(bridge_slave_1) entered forwarding state Modules linked in: CPU: 1 PID: 7060 Comm: syz-executor.5 Not tainted 4.14.145 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888064d54180 task.stack: ffff888064d58000 RIP: 0010:tcp_sendmsg_locked+0x50e/0x3200 net/ipv4/tcp.c:1281 RSP: 0018:ffff888064d5faa8 EFLAGS: 00010206 audit: type=1400 audit(1568966482.527:43): avc: denied { read } for pid=7059 comm="syz-executor.5" 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 RAX: 0000000000000012 RBX: 0000000000000000 RCX: ffffc90005e4d000 RDX: 00000000000000a4 RSI: ffffffff85240e44 RDI: 0000000000000090 RBP: ffff888064d5fc40 R08: 0000000000000001 R09: ffff888064d54a20 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready R13: ffff88809fc5fcc0 R14: ffff888064d5fd60 R15: ffff8880977cd500 8021q: adding VLAN 0 to HW filter on device batadv0 FS: 00007fb68126e700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31225000 CR3: 00000000929af000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'vlan0' (ffff88809eaed200): kobject_add_internal: parent: 'mesh', set: '' tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1457 IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready SYSC_sendto+0x206/0x310 net/socket.c:1763 IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready SyS_sendto+0x40/0x50 net/socket.c:1731 IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459a09 hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network RSP: 002b:00007fb68126dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459a09 RDX: fffffffffffffe12 RSI: 0000000020000440 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000003e8 R11: 0000000000000246 R12: 00007fb68126e6d4 R13: 00000000004c79ac R14: 00000000004dd400 R15: 00000000ffffffff Code: d4 38 fc IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready 4d 85 ed 0f 84 40 08 00 00 e8 ac d4 38 fc 8b 85 78 ff IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready ff ff 48 8d bb 8021q: adding VLAN 0 to HW filter on device batadv0 90 00 00 00 89 85 50 ff ff ff 48 89 f8 48 c1 e8 03 <42> 0f b6 kobject: 'vlan0' (ffff88808aef0280): kobject_add_internal: parent: 'mesh', set: '' 04 20 84 c0 74 06 0f 8e 4a 25 00 00 f6 83 90 00 00 00 RIP: tcp_sendmsg_locked+0x50e/0x3200 net/ipv4/tcp.c:1281 RSP: ffff888064d5faa8 ---[ end trace 2ea52b0d5b94e890 ]---