IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 audit: type=1400 audit(1546638267.957:38): avc: denied { associate } for pid=8285 comm="syz-executor0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 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: 8303 Comm: syz-executor0 Not tainted 4.20.0+ #9 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:43 [inline] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 net/smc/smc_diag.c:93 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 RSP: 0018:ffff888093c17120 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffff8880988b2080 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e RBP: ffff888093c173e8 R08: ffff88807f008280 R09: ffff888097961018 R10: ffffed1012f2c1f8 R11: ffff888097960fc7 R12: ffff888081a50760 R13: ffff888097960fc8 R14: ffff8880988b24e0 R15: 0000000000000000 FS: 00007f1b76ff6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004dac90 CR3: 000000008be87000 CR4: 00000000001406e0 Call Trace: smc_diag_dump_proto.isra.0+0x2e7/0x3c0 net/smc/smc_diag.c:211 smc_diag_dump+0x27/0x80 net/smc/smc_diag.c:225 netlink_dump+0x5f2/0x1070 net/netlink/af_netlink.c:2244 __netlink_dump_start+0x5b4/0x7e0 net/netlink/af_netlink.c:2352 netlink_dump_start include/linux/netlink.h:225 [inline] smc_diag_handler_dump+0x2a7/0x350 net/smc/smc_diag.c:242 __sock_diag_cmd net/core/sock_diag.c:232 [inline] sock_diag_rcv_msg+0x322/0x410 net/core/sock_diag.c:263 netlink_rcv_skb+0x17d/0x410 net/netlink/af_netlink.c:2477 sock_diag_rcv+0x2b/0x40 net/core/sock_diag.c:274 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x574/0x770 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa05/0xf90 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 ___sys_sendmsg+0x7ec/0x910 net/socket.c:2116 __sys_sendmsg+0x112/0x270 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1b76ff5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000008 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1b76ff66d4 R13: 00000000004c5188 R14: 00000000004d8a10 R15: 00000000ffffffff Modules linked in: ---[ end trace 1419bd08dcf6705d ]--- RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:43 [inline] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 net/smc/smc_diag.c:93 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 RSP: 0018:ffff888093c17120 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffff8880988b2080 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e RBP: ffff888093c173e8 R08: ffff88807f008280 R09: ffff888097961018 R10: ffffed1012f2c1f8 R11: ffff888097960fc7 R12: ffff888081a50760 R13: ffff888097960fc8 R14: ffff8880988b24e0 R15: 0000000000000000 FS: 00007f1b76ff6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004dac90 CR3: 000000008be87000 CR4: 00000000001406e0