2020/09/21 07:30:09 executed programs: 3 2020/09/21 07:30:14 executed programs: 5 BUG: memory leak unreferenced object 0xffff8881185f9c00 (size 224): comm "syz-executor.0", pid 6729, jiffies 4295046612 (age 12.990s) hex dump (first 32 bytes): a0 6c 69 1d 81 88 ff ff a0 6c 69 1d 81 88 ff ff .li......li..... 00 00 98 12 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<000000006a6da120>] __build_skb+0x1f/0x100 net/core/skbuff.c:311 [<0000000089a709f2>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523 [<0000000086118e89>] napi_alloc_skb include/linux/skbuff.h:2865 [inline] [<0000000086118e89>] napi_get_frags net/core/dev.c:6053 [inline] [<0000000086118e89>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048 [<000000001f9e6b09>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline] [<000000001f9e6b09>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789 [<0000000026b01c1e>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986 [<000000009eecbcbb>] call_write_iter include/linux/fs.h:1882 [inline] [<000000009eecbcbb>] do_iter_readv_writev+0x207/0x2d0 fs/read_write.c:713 [<00000000f53a06f6>] do_iter_write+0xac/0x230 fs/read_write.c:1018 [<00000000a90a3c2f>] vfs_writev+0xc1/0x120 fs/read_write.c:1091 [<00000000742dee62>] do_writev+0x83/0x170 fs/read_write.c:1134 [<00000000426c8b1e>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<00000000f272cf89>] entry_SYSCALL_64_after_hwframe+0x44/0xa9