executing program executing program executing program executing program BUG: memory leak unreferenced object 0xffff888119b22c00 (size 224): comm "syz-executor440", pid 6541, jiffies 4294943421 (age 12.880s) hex dump (first 32 bytes): a0 34 50 1c 81 88 ff ff a0 34 50 1c 81 88 ff ff .4P......4P..... 00 80 68 17 81 88 ff ff 00 00 00 00 00 00 00 00 ..h............. backtrace: [<00000000bc1cea2c>] __build_skb+0x1f/0x100 net/core/skbuff.c:311 [<00000000087c1027>] __napi_alloc_skb+0xe5/0x140 net/core/skbuff.c:523 [<00000000388a6f15>] napi_alloc_skb include/linux/skbuff.h:2856 [inline] [<00000000388a6f15>] napi_get_frags net/core/dev.c:6053 [inline] [<00000000388a6f15>] napi_get_frags+0x3a/0x70 net/core/dev.c:6048 [<0000000041ff1caa>] tun_napi_alloc_frags drivers/net/tun.c:1425 [inline] [<0000000041ff1caa>] tun_get_user+0xa43/0x1660 drivers/net/tun.c:1789 [<0000000091725408>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986 [<0000000005484cf6>] call_write_iter include/linux/fs.h:1882 [inline] [<0000000005484cf6>] new_sync_write+0x173/0x210 fs/read_write.c:503 [<00000000167cf1f3>] vfs_write+0x21d/0x280 fs/read_write.c:578 [<00000000ac9c20be>] ksys_write+0x72/0x120 fs/read_write.c:631 [<0000000079caeecc>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<00000000a0967d3b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88812aa21c00 (size 1024): comm "syz-executor440", pid 6541, jiffies 4294943421 (age 12.880s) hex dump (first 32 bytes): db 70 93 bb d0 b6 4f e5 a6 77 84 c9 7e a2 33 c4 .p....O..w..~.3. 08 d4 d2 80 4c 37 6a 9e 24 8e ec fa 1e 93 f6 43 ....L7j.$......C backtrace: [<000000009c818297>] __kmalloc_reserve net/core/skbuff.c:142 [inline] [<000000009c818297>] pskb_expand_head+0x8e/0x480 net/core/skbuff.c:1627 [<00000000dff2ea01>] __skb_grow include/linux/skbuff.h:2718 [inline] [<00000000dff2ea01>] tun_napi_alloc_frags drivers/net/tun.c:1431 [inline] [<00000000dff2ea01>] tun_get_user+0xd71/0x1660 drivers/net/tun.c:1789 [<0000000091725408>] tun_chr_write_iter+0x66/0xa0 drivers/net/tun.c:1986 [<0000000005484cf6>] call_write_iter include/linux/fs.h:1882 [inline] [<0000000005484cf6>] new_sync_write+0x173/0x210 fs/read_write.c:503 [<00000000167cf1f3>] vfs_write+0x21d/0x280 fs/read_write.c:578 [<00000000ac9c20be>] ksys_write+0x72/0x120 fs/read_write.c:631 [<0000000079caeecc>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 [<00000000a0967d3b>] entry_SYSCALL_64_after_hwframe+0x44/0xa9