audit: type=1400 audit(1568586461.739:46): avc: denied { map } for pid=7671 comm="syz-executor.4" path=2F616E6F6E5F6875676570616765202864656C6574656429 dev="hugetlbfs" ino=29238 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:hugetlbfs_t:s0 tclass=file permissive=1 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 kobject: 'loop0' (ffff8880a4974ee0): kobject_uevent_env Modules linked in: kobject: 'loop0' (ffff8880a4974ee0): fill_kobj_path: path = '/devices/virtual/block/loop0' CPU: 1 PID: 7673 Comm: syz-executor.4 Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88808cb103c0 task.stack: ffff8880559b8000 RIP: 0010:tcp_mark_push net/ipv4/tcp.c:630 [inline] RIP: 0010:tcp_push+0xe9/0x610 net/ipv4/tcp.c:694 RSP: 0018:ffff8880559bfa48 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90006c44000 RDX: 0000000000000007 RSI: ffffffff85231b30 RDI: 0000000000000038 RBP: ffff8880559bfa98 R08: ffff88805d88695c R09: ffff88808cb10c60 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805d8860c0 R13: 0000000000000000 R14: ffff88805d886954 R15: 0000000000000000 FS: 00007fef2b118700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d723000 CR3: 00000000a66ea000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcp_sendmsg_locked+0x2307/0x3200 net/ipv4/tcp.c:1426 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1457 inet_sendmsg+0x122/0x500 net/ipv4/af_inet.c:762 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 SYSC_sendto+0x206/0x310 net/socket.c:1763 SyS_sendto+0x40/0x50 net/socket.c:1731 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4598e9 RSP: 002b:00007fef2b117c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004598e9 RDX: ffffffffffffffc1 RSI: 00000000200005c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 1201000000003618 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fef2b1186d4 R13: 00000000004c7880 R14: 00000000004dd188 R15: 00000000ffffffff Code: 00 4d 8d 84 24 9c 08 00 00 4c 89 45 b8 e8 40 c7 39 fc 48 8d 7b 38 4c 8b 45 b8 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 1e 04 00 00 48 b8 00 00 00 00 00 RIP: tcp_mark_push net/ipv4/tcp.c:630 [inline] RSP: ffff8880559bfa48 RIP: tcp_push+0xe9/0x610 net/ipv4/tcp.c:694 RSP: ffff8880559bfa48 kobject: 'loop5' (ffff8880a4add360): kobject_uevent_env ---[ end trace f5501acf2dcc6531 ]--- kobject: 'loop5' (ffff8880a4add360): fill_kobj_path: path = '/devices/virtual/block/loop5'