kasan: GPF could be caused by NULL-ptr deref or user memory access Dead loop on virtual device ip6_vti0, fix it urgently! general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6256 Comm: syz-executor.1 Not tainted 4.19.34 #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:generic_timeout_obj_to_nlattr+0x77/0x120 net/netfilter/nf_conntrack_proto_generic.c:103 Dead loop on virtual device ip6_vti0, fix it urgently! Code: b5 41 c7 00 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 50 32 d5 fb 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 74 RSP: 0018:ffff88805b3f73d8 EFLAGS: 00010246 Dead loop on virtual device ip6_vti0, fix it urgently! RAX: 0000000000000000 RBX: 1ffff1100b67ee7b RCX: ffffc90008098000 RDX: 0000000000040000 RSI: ffffffff859604f0 RDI: ffff8880903e0000 RBP: ffff88805b3f7460 R08: ffff8880595f0680 R09: ffff88808603e1e8 R10: ffffed1010c07c3c R11: ffff88808603e1e0 R12: 0000000000000000 R13: ffff88805b3f7438 R14: ffff8880903e0000 R15: dffffc0000000000 FS: 00007fb4a7963700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30c23000 CR3: 00000000aa3b4000 CR4: 00000000001426e0 Dead loop on virtual device ip6_vti0, fix it urgently! DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: cttimeout_default_fill_info net/netfilter/nfnetlink_cttimeout.c:424 [inline] cttimeout_default_get+0x69a/0xa80 net/netfilter/nfnetlink_cttimeout.c:471 Dead loop on virtual device ip6_vti0, fix it urgently! Dead loop on virtual device ip6_vti0, fix it urgently! 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:00007fb4a7962c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4a79636d4 R13: 00000000004c6501 R14: 00000000004dae68 R15: 00000000ffffffff Modules linked in: kobject: 'loop5' (00000000d1d08ace): kobject_uevent_env ---[ end trace 1b6f69fbd9fad812 ]--- kobject: 'loop5' (00000000d1d08ace): fill_kobj_path: path = '/devices/virtual/block/loop5' RIP: 0010:generic_timeout_obj_to_nlattr+0x77/0x120 net/netfilter/nf_conntrack_proto_generic.c:103 kobject: 'loop3' (00000000b5e2bf1c): kobject_uevent_env Code: b5 41 c7 00 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 50 32 d5 fb 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 74 kobject: 'loop3' (00000000b5e2bf1c): fill_kobj_path: path = '/devices/virtual/block/loop3' RSP: 0018:ffff88805b3f73d8 EFLAGS: 00010246 kobject: 'loop2' (00000000bc692519): kobject_uevent_env RAX: 0000000000000000 RBX: 1ffff1100b67ee7b RCX: ffffc90008098000 kobject: 'loop2' (00000000bc692519): fill_kobj_path: path = '/devices/virtual/block/loop2' RDX: 0000000000040000 RSI: ffffffff859604f0 RDI: ffff8880903e0000 kobject: 'loop4' (00000000aa5c37ce): kobject_uevent_env RBP: ffff88805b3f7460 R08: ffff8880595f0680 R09: ffff88808603e1e8 kobject: 'loop4' (00000000aa5c37ce): fill_kobj_path: path = '/devices/virtual/block/loop4' R10: ffffed1010c07c3c R11: ffff88808603e1e0 R12: 0000000000000000 R13: ffff88805b3f7438 R14: ffff8880903e0000 R15: dffffc0000000000 FS: 00007fb4a7963700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000007106b4 CR3: 00000000aa3b4000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400