audit: type=1400 audit(1572393066.281:1147): avc: denied { create } for pid=28453 comm="syz-executor.3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=0 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 Modules linked in: CPU: 1 PID: 28465 Comm: syz-executor.5 Not tainted 4.4.174+ #4 task: ffff88009119df00 task.stack: ffff8801b32f0000 RIP: 0010:[] [] __list_del_entry_valid+0x7c/0x1a0 lib/list_debug.c:51 RSP: 0018:ffff8801b32f75d8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8801b352af90 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8801b352af98 RBP: ffff8801b32f75f0 R08: 0000000000000000 R09: ffff88009119e838 R10: ffffffff83a539f0 R11: 0000000000000000 R12: ffff8801b352af98 R13: ffff8800a922c040 R14: ffff8801b352af39 R15: ffff8801b352afb8 FS: 00007f2b23860700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f121000 CR3: 00000000a4a9a000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff82717d94 ffffffff8255c29c ffff8801b352af90 ffff8801b32f7628 ffffffff8255c2a4 ffff8800bab17700 ffff8801b352af90 ffff88009f47e3c0 ffff8801b352af39 ffff8801b352afb8 ffff8801b32f7648 ffffffff825784e3 Call Trace: [] __list_del_entry include/linux/list.h:116 [inline] [] list_del include/linux/list.h:124 [inline] [] xfrm_state_walk_done+0x84/0x1e0 net/xfrm/xfrm_state.c:1687 [] xfrm_dump_sa_done+0x73/0xa0 net/xfrm/xfrm_user.c:914 [] netlink_dump+0x76b/0xad0 net/netlink/af_netlink.c:2214 [] __netlink_dump_start+0x4ca/0x750 net/netlink/af_netlink.c:2279 [] netlink_dump_start include/linux/netlink.h:175 [inline] [] xfrm_user_rcv_msg+0x556/0x630 net/xfrm/xfrm_user.c:2550 [] netlink_rcv_skb+0xd4/0x2e0 net/netlink/af_netlink.c:2361 [] xfrm_netlink_rcv+0x70/0x90 net/xfrm/xfrm_user.c:2571 [] netlink_unicast_kernel net/netlink/af_netlink.c:1277 [inline] [] netlink_unicast+0x4d7/0x700 net/netlink/af_netlink.c:1303 [] netlink_sendmsg+0x6b6/0xc80 net/netlink/af_netlink.c:1859 [] sock_sendmsg_nosec net/socket.c:638 [inline] [] sock_sendmsg+0xbe/0x110 net/socket.c:648 [] ___sys_sendmsg+0x769/0x890 net/socket.c:1975 [] __sys_sendmsg+0xc5/0x160 net/socket.c:2009 [] SYSC_sendmsg net/socket.c:2020 [inline] [] SyS_sendmsg+0x2d/0x50 net/socket.c:2016 [] entry_SYSCALL_64_fastpath+0x1e/0x9a Code: 00 ad de 4c 8b 01 49 39 c0 74 66 48 b8 00 02 00 00 00 00 ad de 48 39 c3 74 78 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 fb 00 00 00 48 8b 03 48 39 c8 75 74 49 8d 78 RIP [] __list_del_entry_valid+0x7c/0x1a0 lib/list_debug.c:51 RSP ---[ end trace ea8cac1a96342f9a ]---