netlink: 'syz-executor.0': attribute type 9 has an invalid length. BUG: unable to handle page fault for address: ffffffffa097cbd2 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 64c7067 P4D 64c7067 PUD 64c8063 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 5656 Comm: syz-executor.0 Not tainted 6.5.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:read_pnet include/net/net_namespace.h:385 [inline] RIP: 0010:ovs_dp_get_net net/openvswitch/datapath.h:195 [inline] RIP: 0010:ovs_vport_add+0xbe/0x1d0 net/openvswitch/vport.c:223 Code: 4c 89 ef ff 53 08 48 c7 c7 00 f0 ff ff 48 89 c5 48 89 c6 e8 24 59 55 fc 48 81 fd 00 f0 ff ff 0f 87 f6 00 00 00 e8 72 5d 55 fc <48> 8b 45 10 4c 8d 65 28 48 8b 75 00 48 8b 78 60 e8 fd fa ff ff 48 RSP: 0018:ffffc9000359b900 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffffff869ecea0 RCX: 0000000000000000 RDX: ffff888120c154c0 RSI: ffffffff84ea6f5e RDI: 0000000000000007 RBP: ffffffffa097cbc2 R08: 0000000000000007 R09: fffffffffffff000 R10: ffffffffa097cbc2 R11: 0000000000000002 R12: 0000000000000002 R13: ffffc9000359b970 R14: 0000000000000002 R15: ffff8881203ca600 FS: 00007fa118e846c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffa097cbd2 CR3: 000000010e8a7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: new_vport+0x14/0x80 net/openvswitch/datapath.c:203 ovs_dp_cmd_new+0x34a/0x620 net/openvswitch/datapath.c:1841 genl_family_rcv_msg_doit.isra.0+0x108/0x170 net/netlink/genetlink.c:974 genl_family_rcv_msg net/netlink/genetlink.c:1054 [inline] genl_rcv_msg+0x2fa/0x440 net/netlink/genetlink.c:1071 netlink_rcv_skb+0x91/0x1d0 net/netlink/af_netlink.c:2575 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1082 netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline] netlink_unicast+0x2f5/0x450 net/netlink/af_netlink.c:1370 netlink_sendmsg+0x3a7/0x740 net/netlink/af_netlink.c:1939 sock_sendmsg_nosec net/socket.c:725 [inline] sock_sendmsg+0x56/0xb0 net/socket.c:748 ____sys_sendmsg+0x337/0x3e0 net/socket.c:2494 ___sys_sendmsg+0xc9/0x130 net/socket.c:2548 __sys_sendmsg+0xa6/0x120 net/socket.c:2577 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa11807cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa118e840c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa11819bf80 RCX: 00007fa11807cae9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007fa1180c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa11819bf80 R15: 00007ffc69664428 Modules linked in: CR2: ffffffffa097cbd2 ---[ end trace 0000000000000000 ]--- RIP: 0010:read_pnet include/net/net_namespace.h:385 [inline] RIP: 0010:ovs_dp_get_net net/openvswitch/datapath.h:195 [inline] RIP: 0010:ovs_vport_add+0xbe/0x1d0 net/openvswitch/vport.c:223 Code: 4c 89 ef ff 53 08 48 c7 c7 00 f0 ff ff 48 89 c5 48 89 c6 e8 24 59 55 fc 48 81 fd 00 f0 ff ff 0f 87 f6 00 00 00 e8 72 5d 55 fc <48> 8b 45 10 4c 8d 65 28 48 8b 75 00 48 8b 78 60 e8 fd fa ff ff 48 RSP: 0018:ffffc9000359b900 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffffff869ecea0 RCX: 0000000000000000 RDX: ffff888120c154c0 RSI: ffffffff84ea6f5e RDI: 0000000000000007 RBP: ffffffffa097cbc2 R08: 0000000000000007 R09: fffffffffffff000 R10: ffffffffa097cbc2 R11: 0000000000000002 R12: 0000000000000002 R13: ffffc9000359b970 R14: 0000000000000002 R15: ffff8881203ca600 FS: 00007fa118e846c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffa097cbd2 CR3: 000000010e8a7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 89 ef mov %r13,%rdi 3: ff 53 08 call *0x8(%rbx) 6: 48 c7 c7 00 f0 ff ff mov $0xfffffffffffff000,%rdi d: 48 89 c5 mov %rax,%rbp 10: 48 89 c6 mov %rax,%rsi 13: e8 24 59 55 fc call 0xfc55593c 18: 48 81 fd 00 f0 ff ff cmp $0xfffffffffffff000,%rbp 1f: 0f 87 f6 00 00 00 ja 0x11b 25: e8 72 5d 55 fc call 0xfc555d9c * 2a: 48 8b 45 10 mov 0x10(%rbp),%rax <-- trapping instruction 2e: 4c 8d 65 28 lea 0x28(%rbp),%r12 32: 48 8b 75 00 mov 0x0(%rbp),%rsi 36: 48 8b 78 60 mov 0x60(%rax),%rdi 3a: e8 fd fa ff ff call 0xfffffb3c 3f: 48 rex.W