type=1400 audit(1558713565.651:36): avc:  denied  { map } for  pid=7092 comm="syz-executor940" path="/root/syz-executor940446713" dev="sda1" ino=15900 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 0xffff888123de2b00 (size 224):
  comm "softirq", pid 0, jiffies 4294943815 (age 8.760s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 80 ca 12 81 88 ff ff 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000146f42e7>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline]
    [<00000000146f42e7>] slab_post_alloc_hook mm/slab.h:439 [inline]
    [<00000000146f42e7>] slab_alloc mm/slab.c:3326 [inline]
    [<00000000146f42e7>] kmem_cache_alloc+0x134/0x270 mm/slab.c:3488
    [<0000000037cc368a>] __build_skb+0x26/0x70 net/core/skbuff.c:311
    [<000000002d400336>] __napi_alloc_skb+0xf8/0x150 net/core/skbuff.c:524
    [<00000000baa83cdb>] napi_alloc_skb include/linux/skbuff.h:2793 [inline]
    [<00000000baa83cdb>] napi_get_frags net/core/dev.c:5755 [inline]
    [<00000000baa83cdb>] napi_get_frags+0x3f/0x70 net/core/dev.c:5750
    [<00000000ad1e287a>] tun_napi_alloc_frags drivers/net/tun.c:1493 [inline]
    [<00000000ad1e287a>] tun_get_user+0x636/0x1a20 drivers/net/tun.c:1851
    [<00000000ed2c8af6>] tun_chr_write_iter+0x53/0x90 drivers/net/tun.c:2037
    [<00000000db2f000b>] call_write_iter include/linux/fs.h:1872 [inline]
    [<00000000db2f000b>] do_iter_readv_writev+0x210/0x2e0 fs/read_write.c:693
    [<00000000f928c16a>] do_iter_write fs/read_write.c:970 [inline]
    [<00000000f928c16a>] do_iter_write+0xb9/0x230 fs/read_write.c:951
    [<0000000089513e9d>] vfs_writev+0xcb/0x130 fs/read_write.c:1015
    [<000000007919e17b>] do_writev+0x89/0x180 fs/read_write.c:1058
    [<00000000e03819ed>] __do_sys_writev fs/read_write.c:1131 [inline]
    [<00000000e03819ed>] __se_sys_writev fs/read_write.c:1128 [inline]
    [<00000000e03819ed>] __x64_sys_writev+0x20/0x30 fs/read_write.c:1128
    [<000000009e06de75>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301
    [<00000000b91f15bd>] entry_SYSCALL_64_after_hwframe+0x44/0xa9