type=1400 audit(1560707413.254:36): avc:  denied  { map } for  pid=7090 comm="syz-executor598" path="/root/syz-executor598695777" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
executing program
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff888123e0ce00 (size 224):
  comm "softirq", pid 0, jiffies 4294943369 (age 13.820s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 40 e7 0f 81 88 ff ff 00 00 00 00 00 00 00 00  .@..............
  backtrace:
    [<00000000684ec057>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<00000000684ec057>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<00000000684ec057>] slab_alloc mm/slab.c:3326 [inline]
    [<00000000684ec057>] kmem_cache_alloc+0x134/0x270 mm/slab.c:3488
    [<00000000d253e720>] __build_skb+0x26/0x70 net/core/skbuff.c:307
    [<00000000d1433a5d>] __napi_alloc_skb+0xf8/0x150 net/core/skbuff.c:520
    [<0000000007c1f730>] napi_alloc_skb include/linux/skbuff.h:2789 [inline]
    [<0000000007c1f730>] napi_get_frags net/core/dev.c:5717 [inline]
    [<0000000007c1f730>] napi_get_frags+0x3f/0x70 net/core/dev.c:5712
    [<000000001d08d42d>] tun_napi_alloc_frags drivers/net/tun.c:1484 [inline]
    [<000000001d08d42d>] tun_get_user+0x636/0x1a20 drivers/net/tun.c:1842
    [<000000001d497382>] tun_chr_write_iter+0x53/0x90 drivers/net/tun.c:2028
    [<0000000074dac0e7>] call_write_iter include/linux/fs.h:1872 [inline]
    [<0000000074dac0e7>] do_iter_readv_writev+0x210/0x2e0 fs/read_write.c:693
    [<0000000004c10a76>] do_iter_write fs/read_write.c:970 [inline]
    [<0000000004c10a76>] do_iter_write+0xb9/0x230 fs/read_write.c:951
    [<00000000f48766a5>] vfs_writev+0xcb/0x130 fs/read_write.c:1015
    [<00000000638da19a>] do_writev+0x89/0x180 fs/read_write.c:1058
    [<000000008e22ace0>] __do_sys_writev fs/read_write.c:1131 [inline]
    [<000000008e22ace0>] __se_sys_writev fs/read_write.c:1128 [inline]
    [<000000008e22ace0>] __x64_sys_writev+0x20/0x30 fs/read_write.c:1128
    [<00000000bb661db4>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301
    [<00000000cf9506d5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9