general protection fault: 0000 [#1] PREEMPT SMP KASAN ISOFS: Unable to identify CD-ROM format. Modules linked in: CPU: 0 PID: 9918 Comm: syz-executor.0 Not tainted 4.14.233-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88805693c400 task.stack: ffff888056870000 RIP: 0010:ipt_init_target+0x97/0x250 net/sched/act_ipt.c:46 RSP: 0018:ffff888056877160 EFLAGS: 00010202 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff85d34001 RDI: 000000000000002f RBP: 0000000000000010 R08: 0000000000000001 R09: ffffed1015264ca8 R10: ffff8880a9326546 R11: 0000000000000000 R12: 1ffff1100ad0ee2f R13: ffff8880568771e8 R14: 0000000000000010 R15: ffff8880988f4140 FS: 00007f07a623f700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ea21000 CR3: 0000000098c78000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __tcf_ipt_init+0x48d/0xc00 net/sched/act_ipt.c:168 tcf_ipt_init+0x43/0x50 net/sched/act_ipt.c:202 tcf_action_init_1+0x51a/0x9e0 net/sched/act_api.c:682 tcf_action_init+0x26d/0x400 net/sched/act_api.c:751 tcf_action_add net/sched/act_api.c:1079 [inline] tc_ctl_action+0x2e3/0x510 net/sched/act_api.c:1131 rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4316 netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2433 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x62e/0xb80 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x4665d9 RSP: 002b:00007f07a623f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffebd1417af R14: 00007f07a623f300 R15: 0000000000022000 Code: e8 ff e7 81 fb 31 c0 b9 0e 00 00 00 4c 8d ac 24 88 00 00 00 4c 89 ef f3 48 ab 48 8d 7d 1f 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <0f> b6 04 18 38 d0 7f 08 84 c0 0f 85 67 01 00 00 0f b6 55 1f 48 RIP: ipt_init_target+0x97/0x250 net/sched/act_ipt.c:46 RSP: ffff888056877160 ISOFS: Unable to identify CD-ROM format. ---[ end trace 4422a86c6c91936e ]---