netlink: 'syz-executor.2': attribute type 3 has an invalid length. netlink: 'syz-executor.2': attribute type 2 has an invalid length. device nr0 entered promiscuous mode 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: 8789 Comm: syz-executor.2 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcp_timeout_obj_to_nlattr+0x7b/0x650 net/netfilter/nf_conntrack_proto_tcp.c:1386 Code: f1 f1 f1 f1 c7 40 04 04 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 90 24 d5 fb 48 8d 7b 04 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff88808ab8f3d0 EFLAGS: 00010247 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000a482000 RDX: 000000000001b95f RSI: ffffffff859612b0 RDI: 0000000000000004 RBP: ffff88808ab8f460 R08: ffff888086a5e240 R09: ffff88808b1de068 R10: ffffed101163bc0c R11: ffff88808b1de060 R12: ffff888088dd8a80 R13: ffff88808ab8f438 R14: dffffc0000000000 R15: 1ffff11011571e7b FS: 00007fd9be679700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2f36037518 CR3: 000000008b3a6000 CR4: 00000000001406f0 Call Trace: cttimeout_default_fill_info net/netfilter/nfnetlink_cttimeout.c:424 [inline] cttimeout_default_get+0x69a/0xa80 net/netfilter/nfnetlink_cttimeout.c:471 nfnetlink_rcv_msg+0xd12/0xfe0 net/netfilter/nfnetlink.c:228 netlink_rcv_skb+0x180/0x460 net/netlink/af_netlink.c:2454 nfnetlink_rcv+0x1c0/0x460 net/netfilter/nfnetlink.c:560 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53c/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+0xdd/0x130 net/socket.c:632 ___sys_sendmsg+0x806/0x930 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458c29 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:00007fd9be678c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9be6796d4 R13: 00000000004c6501 R14: 00000000004dae68 R15: 00000000ffffffff Modules linked in: kobject: 'loop3' (0000000046443b78): kobject_uevent_env kobject: 'loop3' (0000000046443b78): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000001b332098): kobject_uevent_env kobject: 'loop0' (000000001b332098): fill_kobj_path: path = '/devices/virtual/block/loop0' ---[ end trace 4b1b3dacd61faf1b ]--- RIP: 0010:tcp_timeout_obj_to_nlattr+0x7b/0x650 net/netfilter/nf_conntrack_proto_tcp.c:1386 Code: f1 f1 f1 f1 c7 40 04 04 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 90 24 d5 fb 48 8d 7b 04 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 kobject: 'batman_adv' (0000000034f077d7): kobject_uevent_env kobject: 'batman_adv' (0000000034f077d7): kobject_uevent_env: filter function caused the event to drop! RSP: 0018:ffff88808ab8f3d0 EFLAGS: 00010247 kobject: 'batman_adv' (0000000034f077d7): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000034f077d7): calling ktype release RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000a482000 kobject: (0000000034f077d7): dynamic_kobj_release RDX: 000000000001b95f RSI: ffffffff859612b0 RDI: 0000000000000004 kobject: 'batman_adv': free name RBP: ffff88808ab8f460 R08: ffff888086a5e240 R09: ffff88808b1de068 kobject: 'rx-0' (00000000d6c3d3a2): kobject_cleanup, parent 00000000cf758247 kobject: 'rx-0' (00000000d6c3d3a2): auto cleanup 'remove' event kobject: 'rx-0' (00000000d6c3d3a2): kobject_uevent_env kobject: 'rx-0' (00000000d6c3d3a2): fill_kobj_path: path = '/devices/virtual/net/nr0/queues/rx-0' kobject: 'rx-0' (00000000d6c3d3a2): auto cleanup kobject_del R10: ffffed101163bc0c R11: ffff88808b1de060 R12: ffff888088dd8a80 kobject: 'rx-0' (00000000d6c3d3a2): calling ktype release R13: ffff88808ab8f438 R14: dffffc0000000000 R15: 1ffff11011571e7b kobject: 'rx-0': free name FS: 00007fd9be679700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 kobject: 'tx-0' (000000004c89e3cc): kobject_cleanup, parent 00000000cf758247 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'tx-0' (000000004c89e3cc): auto cleanup 'remove' event CR2: 00007fd9be657db8 CR3: 000000008b3a6000 CR4: 00000000001406e0 kobject: 'tx-0' (000000004c89e3cc): kobject_uevent_env