BUG: unable to handle kernel NULL pointer dereference at (null) IP: (null) PGD 98c2d067 P4D 98c2d067 PUD 8ac13067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 9428 Comm: syz-executor.1 Not tainted 4.14.151 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kauditd_printk_skb: 17 callbacks suppressed audit: type=1804 audit(1573022968.794:145): pid=9431 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir134144770/syzkaller.eFyFFP/83/bus" dev="sda1" ino=16809 res=1 task: ffff8880a081e3c0 task.stack: ffff888062f20000 RIP: 0010: (null) RSP: 0018:ffff888062f27d48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffffffff88151060 RCX: ffffc90009e55000 RDX: 1ffffffff102a223 RSI: 0000000000000000 RDI: ffff88809c3b2800 RBP: ffff888062f27d68 R08: 0000000000000001 R09: ffff8880a081ec60 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809c3b2800 R13: ffff88809c3b280e R14: 000000000000001c R15: 0000000000000802 FS: 00007f3e0cb91700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000083e21000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inet_autobind+0xae/0x180 net/ipv4/af_inet.c:181 inet_dgram_connect+0x136/0x1e0 net/ipv4/af_inet.c:538 SYSC_connect+0x1f6/0x2d0 net/socket.c:1655 SyS_connect+0x24/0x30 net/socket.c:1636 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45a219 RSP: 002b:00007f3e0cb90c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219 RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3e0cb916d4 R13: 00000000004c09aa R14: 00000000004d3358 R15: 00000000ffffffff Code: Bad RIP value. RIP: (null) RSP: ffff888062f27d48 CR2: 0000000000000000 kobject: 'loop4' (ffff8880a4b1b3e0): kobject_uevent_env kobject: 'loop4' (ffff8880a4b1b3e0): fill_kobj_path: path = '/devices/virtual/block/loop4' ---[ end trace 8a5f90066b8fa3ed ]--- kobject: 'nr0' (ffff888062fb9670): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop0' (ffff8880a49a20e0): kobject_uevent_env